Substation Automation Products Distributed busbar ... Automation Products Distributed busbar protection REB500 including line and transformer protection Page 3 • Three-phase current

Substation Automation Products

Distributed busbar protection REB500including line and transformer protectionProduct Guide


Distributed busbar protection REB500including line and transformer protection

Main features • Low-impedance busbar protection

• Stub and T-zone protection

• High functional reliability due to two inde-pendent measurement criteria:

- stabilized differential current algorithm

- directional current comparison algorithm

• Phase-by-phase measurement

• Reduced CT performance requirements

• High through-fault stability even in case of CT saturation

• Full solid-state busbar replica

• No switching of CT circuits

• Only one hardware version for

- 1 and 5 A rated currents

- all auxiliary supply voltages between 48 V DC and 250 V DC

- nominal frequencies of 50, 60 and 16.7 Hz

• Short tripping times independent of the plant’s size or configuration

• Centralized layout: Installation of hardware in one or several cubicles

• Distributed layout: Bay units distributed and, in the case of location close to the feeders, with short connections to CTs, iso-lators, circuit breakers, etc.

• Connections between bay units and central unit by fiber-optic cables

- maximum permissible length 1200 m

- for distributed and centralized layout

• fiber-optic connections mean interference-proof data transfer even close to HV power cables

• Replacement of existing busbar protection schemes can be accomplished without re-strictions (centralized layout) in the case of substation extensions e.g. by a mixture of centralized and distributed layout

• Easily extensible

• User-friendly, PC-based human machine interface (HMI)

• Fully numerical signal processing

• Comprehensive self-supervision

• Binary logic and timer in the bay unit

• Integrated event recording

• Integrated disturbance recording for power system currents

• A minimum of spare parts needed due to standardization and a low number of vary-ing units

• Communication facilities for substation monitoring and control systems via IEC 61850-8-1, IEC 60870-5-103 and LON

• IEC 62439 standard redundant station bus communication

• IEC 61850-9-2 LE process bus communi-cation

• Cyber security to support

- User Access Management

- User Activity Logging

Options• Breaker failure protection (also separately

operable without busbar protection)

• End fault protection

• Definite time overcurrent protection

• Breaker pole discrepancy

• Current and voltage release criteria

• Disturbance recording for power system voltages

• Separate I0 measurement for impedance-

grounded networks

• Communication with substation monitoring and control system (IEC 61850-8-1 /IEC 60870-5-103 / LON)

• Internal user-friendly human machine inter-face with display

• Redundant power supply for central units and/or bay units

Additional main features

REB500sys combines the well-proven numer-ical busbar and breaker failure protection REB500 of ABB with Main 2 or back-up pro-tection for line or transformer feeders. The Main 2 / Group 1 or back-up protection is based on the well-proven protection function library of ABB line and transformer protection for 50, 60 and 16.7 Hz.

Main 2 / back-up bay protection• Definite and inverse time over- and under-

current protection

• Directional overcurrent definite and inverse time protection

• Inverse time earth fault overcurrent protec-tion

• Definite time over- and undervoltage pro-tection

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• Three-phase current and three-phase volt-age plausibility

Main 2 / back-up bay protection: Line protection• High-speed distance protection

• Directional sensitive earth fault protection for grounded systems against high resis-tive faults in solidly grounded networks

• Directional sensitive earth fault protection for ungrounded or compensated systems

• Autoreclosure for

- single-pole / three-pole reclosure

- up to four reclosure sequences

• Synchrocheck with

- measurement of amplitudes, phase angles and frequency of two voltage vectors

- checks for dead line, dead bus, dead line and bus

Group 1 / back-up bay protection: Transformer protection• High-speed transformer differential protec-

tion for 2- and 3-winding and auto-trans-formers

• Thermal overload

• Peak value over- and undercurrent protec-tion

• Peak value over- and undervoltage protec-tion

• Overfluxing protection

• Rate of change frequency protection

• Frequency protection

• Independent T-Zone protection with trans-former differential protection

• Power protection

Application REB500The numerical busbar protection REB500 is designed for the high-speed, selective protec-tion of MV, HV and EHV busbar installations at a nominal frequency of 50, 60 and 16.7 Hz.

The structure of both hardware and software is modular enabling the protection to be easily configured to suit the layout of the primary system.

The flexibility of the system enables all config-urations of busbars from single busbars to quadruple busbars with transfer buses, ring busbars and 1½ breaker schemes to be pro-tected.

In 1½ breaker schemes the busbars and the entire diameters, including Stub/T-Zone can be protected. An integrated tripping scheme allows to save external logics as well as wir-ing.

The capacity is sufficient for up to 60 feeders (bay units) and a total of 32 busbar zones.

The numerical busbar protection REB500 detects all phase and earth faults in solidly grounded and resistive-grounded power sys-tems and phase faults in ungrounded systems and systems with Petersen coils.

The main CTs supplying the currents to the busbar protection have to fulfil only modest performance requirements (see page 18). The protection operates discriminatively for all faults inside the zone of protection and remains reliably stable for all faults outside the zone of protection.

REB500sysThe REB500sys is foreseen in MV, HV and EHV substations with nominal frequencies of 16.7, 50 Hz or 60 Hz to protect the busbars and their feeders. The bay protection func-tions included in REB500sys are used as Main 2 / Group 1 - or back-up protection.

The system REB500sys is foreseen for all sin-gle or double busbar configurations (Line vari-ants L-V1 to L-V7 and Transformer variant T-V1 to T-V4). In 1½ breaker configurations, variant L-V5 can be used for the bay level functions autoreclosure and synchrocheck. The capacity is sufficient for up to 60 feeders (bay units) and a total of 32 busbar zones.

The REB500sys detects all bus faults in sol-idly and low resistive-grounded power sys-tems, all kind of phase faults in ungrounded and compensated power systems as well as feeder faults in solidly, low resistive-grounded, compensated and ungrounded power sys-tems.

The protection operates selectively for all faults inside the zone of protection and remains reliably stable for all faults outside the zone of protection.

REB500sys is perfectly suited for retrofit con-cepts and stepwise upgrades. The bay unit is used as a stand-alone unit for bay protection functions (e.g. line protection, autoreclosure and synchrocheck or 2- and 3 winding trans-former protection or autonomous T-zone pro-tection). The central unit can be added at a later stage for full busbar and breaker failure protection functionality.

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Application (cont´d) Depending on the network voltage level and the protection philosophy the following protec-tion concepts are generally applied:

• Two main protection schemes per bay and one busbar protection.With REB500sys the protection concept can be simplified. Due to the higher inte-gration of functionality one of the main pro-tection equipment can be eliminated.

• One main protection and one back-up protection scheme per bay, no busbar protection.With REB500sys a higher availability of the energy delivery can be reached, due to the implementation of busbar and breaker fail-ure protection schemes where it hasn't been possible in the past because of eco-nomical reasons.

Nine standard options are defined for Main 2/ Group 1 or back-up bay level functions:

Line protection- Line variant 1 (L-V1)

directional, non-directional overcurrent and directional earth fault protection

- Line variant 2 (L-V2)as line variant L-V1 plus distance prot.

- Line variant 3 (L-V3)as line variant L-V2 plus autoreclosure

- Line variant 4 (L-V4)as line variant L-V3 plus synchrocheck

- Line variant 5 (L-V5)as line variant L-V1 plus autoreclosure and synchrocheck.

- Line variant 6 (L-V6) for 16.7 Hznon-directional overcurrent, distance protec-tion, autoreclosure.

- Line variant 7 (L-V7) for 16.7 Hzas line variant L-V6 plus directional earth fault protection for grounded systems

Transformer protection- Transformer variant 1 (T-V1)

2- or 3 winding transformer differential pro-tection, thermal overload, current functions; applicable also as autonomous T-zone pro-tection.

- Transformer variant 2 (T-V2)2-winding transformer differential protec-tion, thermal overload, current functions, overfluxing protection, neutral overcurrent (EF).

- Transformer variant 3 (T-V3)Distance protection for transformer back-up or 2-winding transformer differential protec-tion, thermal overload, current functions, voltage functions, frequency functions, power function, overfluxing protection.

- Transformer variant 4 (T-V4)Transformer oriented functions/ back-up functions -> thermal overload, current func-tions, voltage functions, frequency func-tions, power function, overfluxing protection.

Fig. 1

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Table 1 Overview of the functionalities REB500 / REB500sys

Main functionality IEEE

Pro

tect

ion

func

tion

IEC

6185

0

Sta

ndar

d

Opt

ion

Lin

e Va

riant

1 (

L-V1

) 50/

60H

z

Lin

e Va

riant

2 (

L-V2

) 50/

60H

z

Lin

e Va

riant

3 (

L-V3

) 50/

60H

z

Lin

e Va

riant

4 (

L-V4

) 50/

60H

z

Lin

e Va

riant

5 (

L-V5

) 50/

60H

z

Lin

e Va

riant

6 (

L-V6

) 16.

7 H

z

Lin

e Va

riant

7 (

L-V7

) 16.

7 H

z

Tra

nsfo

rmer

Var

iant

1 (

T-V1

) 50/

60 H

z

Tra

nsfo

rmer

Var

iant

2 (

T-V2

) 50/

60 H

z

Tra

nsfo

rmer

Var

iant

3 (

T-V3

) 50/

60 H

z

Tra

nsfo

rmer

Var

iant

4 (

T-V4

) 50/

60 H

z

Busbar protection 87B BBP PDIF �Busbar protection with neutral current 87BN I0 PDIF �Breaker failure protection inlcluding neutral current detection 50BF BFP RBRF �End-fault protection 51/62EF EFP PTOC �Breaker pole discrepancy 51/62PD PDF PTOC �Overcurrent check feature 51 PTOC �Voltage check feature 59/27 PTOV/PTUV �Check zone 87CZ BBP CZ PDIF �Current plausibility check - - - �Overcurrent protection (def. time) 51 OCDT PTOC �Trip command re-direction 94RD - �Software matrix for inputs / outputs / trip matrix - - �Event recording up to 1000 events - ER - �Disturbance recorder (4 x I) 95DR DR RDRE �Disturbance recorder (4 x I, 5 x U) up to 10 s at 2400 Hz 95DR DR RDRE �Communication interface IEC 61850-8-1/ LON / IEC 60870-5-103 - Com - �

Time synchronization - - �Redundant power supply for central- and/or bay units - - �Isolator supervision - - �Differential current supervision - - �Comprehensive self-supervision - - �Dynamic Busbar replica with display of currents - - �WEB - Server - - �Testgenerator for commissioning & maintenance - - �Remote-HMI - - �Delay / Integrator function - - �Binary logic and Flip-Flop functions - - �Definite time over- and undercurrent protection 51 OCDT PTOC � � � � � � � � � � �Inverse time overcurrent protection 51 OCINV PTOC � � � � � � � � �Definite time over- and undervoltage protection 59/27 OVDT PTUV/PTOV � � � � � � � � �Inverse time earth fault overcurrent protection 51N I0INV PTOC � � � � � � � � �Directional overcurrent definite time protection 67 DIROCDT PTOC � � � � � � �Directional overcurrent inverse time protection 67 DIROCINV PTOC � � � � � � �Three phase current plausibility 46 CHKI3PH PTOC � � � � � � � � �Three phase voltage plausibility 47 CHKU3PH PTUV � � � � � � �Test sequenzer - - � � � � � � � � � � �Direct. sensitive EF prot. for grounded systems 67N DIREFGND PDEF � � � � � � � �Direct. sensitive EF prot. for ungrounded or compensated systems 32N DIREFISOL PSDE � � � � �

Distance protection 21 DIST PDIS � � � � � �Autoreclosure 79 AR RREC � � � � �Synchrocheck 25 SYNC RSYN � �Transformer differential protection 2 winding 87T DIFTRA PDIF � � � �Transformer differential protection 3 winding 87T DIFTRA PDIF �Thermal overload 49 TH PTTR � � � � � � � � �Peak value over- and undercurrent protection 50 OCINST PTUC/PTOC � � � �Peak value over- and undervoltage protection 59 OVINST PTUV/PTOV � � � � � � �Definite time overfluxing protection 24 U/fDT PVPH � � �Inverse time overfluxing protection 24 U/fINV PVPH � � �Rate-of-change frequency protection 81 df/dt PVRC � �Frequency protection 81 Freq PTOF/PTUF � �Power protection 32 P PDUP/PDOP � �

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Mode of installation

There are three versions of installing the numerical busbar protection REB500 and the numeri-cal station protection REB500sys:

Distributed installationIn this case, the bay units (see Fig. 24) are installed in casings or cubicles in the indivi-dual switchgear bays distributed around the

station and are connected to the central pro-cessing unit by optical fiber cables. The cen-tral processing unit is normally in a centrally located cubicle or in the central relay room.

Fig. 2 Distributed installation

Centralized installation19" mounting plates with up to three bay units each, and the central processing unit are mounted according to the size of the busbar system in one or more cubicles (see Fig. 23). A centralized installation is the ideal solution

for upgrading existing stations, since verylittle additional wiring is required and com-pared with older kinds of busbar protection, much more functionality can be packed into the same space.

Fig. 3 Centralized installation

Combined centralized and distributed installationBasically, the only difference between a dis-tributed and a centralized scheme is the mounting location of the bay units and there-fore it is possible to mix the two philosophies.

Page 6



System design Bay unit (500BU03)The bay unit (see Fig. 4) is the interface between the protection and the primary sys-tem process comprising the main CTs, isola-tors and circuit-breaker and performs the associated data acquisition, pre-processing, control functions and bay level protection functions. It also provides the electrical insula-tion between the primary system and the internal electronics of the protection.

The input transformer module contains four input CTs for measuring phase and neutral currents with terminals for 1 A and 5 A. Addi-tional interposing CTs are not required, because any differences between the CT ratios are compensated by appropriately con-figuring the software of the respective bay units.

Optional input transformer module also con-tains five input voltage transformers for the measurement of the three-phase voltages and two busbar voltages and recording of voltage disturbances or 6 current transformers for transformer differential protection. (see Fig. 12).

In the analog input and processing module, the analog current and voltage signals are converted to numerical signals at a sampling rate of 48 samples per period and then numerically preprocessed and filtered accord-ingly. Zero-sequence voltage and zero-current signals are also calculated internally. The Pro-

cess data are transferred at regular intervals from the bay units to the central processing unit via the process bus.

Every bay unit has 20 binary inputs and 16 relay outputs. The binary I/O module detects and processes the positions of isolators and couplers, blocking signals, starting signals, external resetting signals, etc. The binary input channels operate according to a pat-ented pulse modulation principle in a nominal range of 48 to 250 V DC. The PC-based HMI program provides settings for the threshold voltage of the binary inputs. All the binary out-put channels are equipped with fast operating relays and can be used for either signaling or tripping purposes (see contact data in Table 8).

A software logic enables the input and output channels to be assigned to the various func-tions. A time stamp is attached to all the data such as currents, voltages, binary inputs, events and diagnostic information acquired by a bay unit.

Where more binary and analog inputs are needed, several bay units can be combined to form a feeder/bus coupler bay (e.g. a bus cou-pler bay with CTs on both sides of the bus-tie breaker requires two bay units).

The bay unit is provided with local intelligence and performs local protection (e.g. breaker failure, end fault, breaker pole discrepancy), bay protection (Main 2 or back-up bay protec-tions) as well as the event and disturbance recording.

Fig. 4 Block diagram of a bay unit and a central unit

Modul

Uhr Interface

Modul

Modul

Koppler E/A E/AKoppler

Modul

Interface

CIM

DC

CPUModule

CPUModule

CPUModule

SAS/SMSInterface

RS 232Interface

Real-timeClock

Star-coupler

BinaryI/O

Starcoupler

Local HMIcess-bus

tput

Central Unit (500CU03)

DCCIM

DC

CPUModule

CPUModule

CPUModule

SAS/SMSInterface

RS 232Interface

Real-timeClock

Star-coupler

BinaryI/O

Starcoupler

Local HMI

Electrical

insulation

Process-bus

Filter

Binary in/outputregisters

A/D

Filter

CPU

Optical

Interface

DC

DC

DSPDP

Mem

Central Unit (500CU03)Bay Unit (500BU03)

Local HMI

DC

Page 7



System design (cont´d) In the event that the central unit is out of oper-ation or the optical fiber communication is dis-rupted an alarm is generated, the bay unit will continue to operate, and all local and bay pro-tection as well as the recorders (event and disturbance) will remain fully functional (stand-alone operation).

The hardware structure is based on a closed, monolithic casing and presented in two mounting solutions:

• Without local HMI: ideal solution if conve-nient access to all information via the cen-tral unit or by an existing substation automation system is sufficient.

• With local HMI and 20 programmable LEDs (Fig. 5): ideal solution for distributed and kiosk mounting (AIS), since all information is available in the bay.

For the latter option it is possible to have the HMI either built in or connected via a flexible cable to a fixed mounting position (seeFig. 28).

In the event of a failure, a bay unit can be eas-ily replaced. The replacement of a bay unit can be handled in a simple way. During sys-tem start-up the new bay unit requests its address, this can be entered directly via its local HMI. The necessary setting values and configuration data are then downloaded auto-matically.

Additional plug-and-play functionalityBay units can be added to an existing REB500 system in a simple way.

Fig. 5 Bay unit

Central unit (500CU03)The hardware structure is based on standard racks and only a few different module types for the central unit (see Fig. 4).

The modules actually installed in a particular protection scheme depend on the size, com-plexity and functionality of the busbar system.

A parallel bus on a front-plate motherboard establishes the interconnections between the modules in a rack. The modules are inserted from the rear.

The central unit is the system manager, i.e. it configures the system, contains the busbar replica, assigns bays within the system, man-ages the sets of operating parameters, acts as process bus controller, assures synchroniza-tion of the system and controls communica-tion with the station control system.

The variables for the busbar protection func-tion are derived dynamically from the process data provided by the bay units.

The process data are transferred to the cen-tral processor via a star coupler module. Up to 10 bay units can be connected to the first cen-tral processor and 10 to the others. Central processors and star coupler modules are added for protection systems that include more than 10 bay units. In the case of more than 30 bay units, additional casings are required for accommodating the additional central processors and star coupler modules required.

All modules of the central unit have a plug-and-play functionality in order to minimize module configuration.

One or two binary I/O modules can be con-nected to a central processing unit.

The central unit comprises a local HMI with 20 programmable LEDs (Fig. 6), a TCP/IP port for very fast HMI500 connection within the local area network.

Fig. 6 Central unit

Page 8



Functionality Busbar protection The protection algorithms are based on two well-proven measuring principles which have been applied successfully in earlier ABB low-impedance busbar protection systems:

• a stabilized differential current measure-ment

• the determination of the phase relationship between the feeder currents (phase com-parison)

The algorithms process complex current vec-tors which are obtained by Fourier analysis and only contain the fundamental frequency component. Any DC component and harmon-ics are suppressed.

The first measuring principle uses a stabilized differential current algorithm.The currents are evaluated individually for each of the phases and each section of bus-bar (protection zone).

Fig. 7 Tripping characteristic of the stabilized differential current algorithm.

In Fig. 7, the differential current is

and the restraint current

where N is the number of feeders. The follow-ing two conditions have to be accomplished for the detection of an internal fault:

wherekst stabilizing factor

kst max stabilization factor limit. A typical value is kst max = 0.80

IK min differential current pick-up value

The above calculations and evaluations are performed by the central unit.The second measuring principle determines the direction of energy flow and involves com-paring the phases of the currents of all the feeders connected to a busbar section.

The fundamental frequency current phasors 1..n (5) are compared. In the case of an in-ternal fault, all of the feeder currents have al-most the same phase angle, while in normal operation or during an external fault at least one current is approximately 180° out of phase with the others.

The algorithm detects an internal fault when the difference between the phase angles of all the feeder currents lies within the tripping angle of the phase comparator (see Fig. 8).

( | | )

0Restraint current

( | | ) 0

IKm in

k = 1

Ksetting =kst maxTrip

ping

area

Differentialcurrent

Restraintarea

(1)

N

1nLnDiff II

(2)

N

1nLnRest II

(3)maxstRest

Diffst k

I

Ik

(4)minKDiff II

(5)

Ln

Lnn

IRe

IImarctan

Page 9



Functionality (cont´d)

Fig. 8 Characteristic of the phase comparator for determining energy direction

The task of processing the algorithms is shared between the bay units and the central processing unit. Each of the bay units continu-ously monitors the currents of its own fee-der, preprocesses them accordingly and then fil-ters the resulting data according to a Fourier function. The analog data filtered in this way are then transferred at regular intervals to the central processing unit running the busbar protection algorithms.

Depending on the phase-angle of the fault, the tripping time varies at Idiff/Ikmin5 bet-ween 20 and 30 ms including the auxiliary tripping relay.

Optionally, the tripping signal can be inter-locked by a current or voltage release criteria in the bay unit that enables tripping only when a current above a certain minimum is flowing, respectively the voltage is below a certain value.

Breaker failure protectionThe breaker failure functions in the bay units monitor both phase currents and neutral cur-rent independently of the busbar protection. They have two timers with individual settings.

Operation of the breaker failure function is enabled either:

• internally by the busbar protection algo-rithm (and, if configured, also by the inter-nal line protection, overcurrent or pole discrepancy protection features) of the bay level

• externally via a binary input, e.g. by the line protection, transformer protection etc.

After the delay of the first timer has expired, a tripping command can be applied to a second

tripping coil on the circuit-breaker and a remote tripping signal transmitted to the sta-tion at the opposite end of the line.

This first timer operates in a stand-alone mode in the bay unit.

If the fault still persists at the end of the sec-ond time delay, the breaker failure function uses the busbar replica to trip all the other feeders supplying the same section of busbar via their bay units.

A remote tripping signal can be configured in the software to be transmitted after the first or second timer.

Phase-segregated measurements in each bay unit cope with evolving faults.

End fault protectionIn order to protect the “dead zone” between an open circuit-breaker and the associated CTs, a signal derived from the breaker posi-tion and the close command is applied.

The end fault protection is enabled a certain time after the circuit-breaker has been open-ed. In the event of a short circuit in the dead zone the nearest circuit-breakers are tripped.

This function is performed in a stand-alone mode in the bay unit.

Overcurrent functionA definite time overcurrent back-up protection scheme can be integrated in each bay unit. (The operation of the function, if para-meter-ized, may start the local breaker failure pro-tection scheme).

This function is performed in a stand-alone mode in the bay unit.

Current release criteriaThe current release criteria is only performed in the bay unit. It is effective for a busbar pro-tection trip and for an intertripping signal (including end fault and breaker failure) and prevents those feeders from being tripped that are conducting currents lower than the setting of the current release criteria.

Voltage release criteriaThe voltage criterion is measured in the bay unit. The function can be configured as release criterion per zone through internal

linking in the central unit. This necessitates the existence of one set of voltage transform-ers per zone in one of the bay units. Tripping

Phase-shift

74°

0° = 36°

= 144°

Restraint area

Case 1 2

max = 74°

Tripping area

Busbar

Operating characteristic

Re

Im

I1

I2

Im

ReI1

I2

180°

Case 1: External fault = 144°

Case 2: Internal fault = 36°

Page 10



is only possible if the voltage falls short of (U<) or exceeds (U0>) the set value.

Additionally this release criterion can be con-figured for each feeder (voltage transformers must be installed). For details see Table 22.

Check zone criterionThe check zone algorithm can be used as a release criterion for the zone-discriminating low-impedance busbar protection system. It is based on a stabilized differential current mea-surement, which only acquires the feeder cur-rents of the complete busbar. The isolator / breaker positions are not relevant for this cri-terion.

Neutral current detection I0 Earth fault currents in impedance-grounded systems may be too low for the stabilized dif-ferential current and phase comparison func-tions to detect. A function for detecting the neutral current is therefore also available, but only for single phase-to-earth faults.

Pole discrepancyA pole discrepancy protection algorithm supervises that all three poles of a circuit-breakers open within a given time.

This function monitors the discrepancy bet-ween the three-phase currents of the circuit-breaker.

When it picks up, the function does not send an intertripping signal to the central unit, but, if configured, it starts the local breaker failure protection (BFP logic 3).

This function is also performed in a stand-alone mode in the bay unit.

Event recordingThe events are recorded in each bay unit. A time stamp with a resolution of 1ms is attach-ed to every binary event. Events are divided into the three following groups:

• system events

• protection events

• test events

The events are stored locally in the bay unit or in the central unit.

Disturbance recordingThis function registers the currents and the binary inputs and outputs in each bay. Volt-ages can also be optionally registered (see Table 14).

A disturbance record can be triggered by either the leading or lagging edges of all binary signals or by events generated by the internal protection algorithms. Up to 10 gen-eral-purpose binary inputs may be configured to enable external signals to trigger a distur-bance record. In addition, there is a binary input in the central and the bay unit for starting the disturbance recorders of all bay units.

The number of analog channels that can be recorded, the sampling rate and the recording period are given in Table 14. A lower sampling rate enables a longer period to be recorded.

The total recording period can be divided into a maximum of 15 recording intervals per bay unit.

Each bay unit can record a maximum of 32 binary signals, 12 of which can be configured as trigger signals.

The function can be configured to record the pre-disturbance and post-disturbance states of the signals.

The user can also determine whether the re-corded data is retained or overwritten by the next disturbance (FIFO = First In, First Out).

This function is performed in a stand-alone mode in the bay unit (see page 7).

Note:Stored disturbance data can be transferred via the central unit to other computer systems for evaluation by programs such as PSM505 [3]. Files are transferred in the COMTRADE for-mat.

After retrieving the disturbance recorder data, it is possible to display them graphically with PSM505 directly.

Communication interfaceWhere the busbar protection has to communi-cate with a station automation system (SAS), a communication module is added to the cen-tral unit. The module supports the interbay bus protocols IEC 61850-8-1, IEC 60870-5-103 and LON.

The IEC 61850-8-1 interbay bus transfers via either optical or electrical connection:

• differential current of each protection zone

• monitoring information from REB500 cen-tral unit and bay units

• binary events (signals, trips and diagnostic)

• trip reset command

Page 11



Functionality (cont´d) • disturbance recording data (via MMS file transfer protocol)

• time synchronization with Simple Network Time Protocol (SNTP)

• two independent time servers are sup-ported. Server 2 as backup time

The LON interbay bus transfers via optical connection:

• differential currents of each protection zone

• binary events (signals, trips and diagnostic)


• disturbance recording data (via HMI500)

• time synchronization

The IEC 60870-5-103 interbay bus transfers via either optical or electrical connection:

• time synchronization

• selected events listed in the public part

• all binary events assigned to a private part

• all binary events in the generic part


Test generatorThe HMI program (HMI500) which runs on a PC connected to either a bay unit or the cen-tral processing unit includes a test generator.

During commissioning and system mainte-nance, the test generator function enables the user to:

• activate binary input and output signals

• monitor system response.

• test the trip circuit up to and including the circuit-breaker

• test the reclosure cycles

• establish and perform test sequences with virtual currents and voltages for the bay protection of the REB500sys

The test sequencer enables easy testing of the bay protection without the need to decom-mission the busbar protection. Up to seven se-quences per test stage can be started. The sequences can be saved and reactivated for future tests.

Isolator supervisionThe isolator replica is a software feature with-out any mechanical switching elements. The software replica logic determines dynamically the boundaries of the protected busbar zones

(protection zones). The system monitors any inconsistencies of the binary input circuits connected to the isolator auxiliary contacts and generates an alarm after a set time delay.

In the event of an isolator alarm, it is possible to select the behavior of the busbar protec-tion:

• blocked

• zone-selective blocked

• remain in operation

Differential current supervisionThe differential current is permanently super-vised. Any differential current triggers a time-delayed alarm. In the event of a differential current alarm, it is possible to select the behavior of the busbar protection:

• blocked

• zone-selective blocked

• remain in operation

Trip redirectionA binary input channel can be provided to which the external signal monitoring the cir-cuit-breaker air pressure is connected. Trip-ping is not possible without active signal. When it is inactive, a trip generated by the respective bay unit is automatically redirected to the station at the opposite end of the line and also to the intertripping logic to trip all the circuit-breakers connected to the same sec-tion of busbar.

The trip redirection can also be configured with a current criterion (current release crite-ria).

Table 2

N/O contact:“Isolator CLOSED”

N/Ccontact:“Isolator OPEN”

Isolator position

open open Last position stored (for busbar protection)+ delayed isolator alarm, + switching pro-hibited signal

open closed OPEN

closed open CLOSED

closed closed CLOSED+ delayed isolator alarm, + switching pro-hibited signal

Page 12



Human machine interface (HMI)The busbar protection is configured and main-tained with the aid of human machine inter-faces at three levels.

Local HMIThe local display interface installed in the cen-tral unit and in the bay units comprises:

• a four-line LCD with 16 characters each for displaying system data and error mes-sages

• keys for entering and display as well as 3 LEDs for the display of trips, alarms and normal operation.

• in addition 20 freely programmable LEDs for user-specific displays on the bay unit 500BU03 and central unit 500CU03.

The following information can be displayed:

• measured input currents and voltages

• measured differential currents (for the bus-bar protection)

• system status, alarms

• switchgear and isolator positions (within the busbar protection function)

• starting and tripping signals of protection functions

External HMI (HMI500)More comprehensive and convenient control is provided by the external HMI software run-ning on a PC connected to an optical interface on the front of either the central unit or a bay unit. The optical interface is completely immune to electrical interference. The PC software facilitates configuration of the entire busbar protection, the set-ting of parameters and full functional checking and testing. The HMI500 can also be operated via the LON Bus on MicroSCADA for example, thus elimi-nating a separate serial connection to the cen-tral unit.

The HMI runs under MS WINDOWS NT, WIN-DOWS 98, WINDOWS 2000 and WINDOWS XP. The HMI500 is equipped with a comfort-able on-line help function. A data base com-parison function enables a detailed comparison between two configuration files (e.g. between the PC and the central unit or between two files on the PC).

Remote HMIA second serial interface at the rear of the central unit provides facility for connecting a PC remotely via either an optical fiber, TCP/IP or modem link. The operation and function of HMI500 is the same whether the PC is con-nected locally or remotely.

Additional functionalities

Bay level functionsThese functions are based on the well estab-lished and well-proven functions built in the ABB line and transformer protection. The bay level functions contain all the relevant addi-tional functions, which are normally requested of a line and transformer protection scheme.

The line protection functions (L-V1 - L-V7) are used as Main 2 or back-up for lines as well as for transformer bays. The transformer protec-tion functions (T-V1 - T-V4) are used as Group 2 or back-up bay protection for transformer bays or as an independent T-Zone protection.

Page 13



Additional functional-ities (cont´d)

High-speed distance protection• Overcurrent or underimpedance starters

with polygonal characteristic

• Five distance zones (polygon for forwards and reverse measurement)

• Load-compensated measurement

• Definite time overcurrent back-up protec-tion (short-zone protection)

• System logic

- switch-onto-fault

- overreach zone

• Voltage transformer circuit supervision

• Power swing blocking function

• HF teleprotection. The carrier-aided schemes include:

- permissive underreaching transfer trip-ping

- permissive overreaching transfer trip-ping

- blocking scheme with echo and tran-sient blocking functions

• Load-compensated measurement

- fixed reactance slope

- reactance slope dependent on load value and direction (ZHV<)

• Parallel line compensation

• Phase-selective tripping for single and three-pole autoreclosure

• Four independent, user-selectable setting groups.

In the supervision mode the active and reac-tive power with the respective energy direction is displayed by the HMI500.

AutoreclosureThe autoreclosure function permits up to four three-phase autoreclosure cycles. The first cycle can be single phase or three-phase.

If the REB500sys autoreclosure function is employed, it can be used as a back-up for the autoreclosure realized externally (separate equipment or in the Main 1 protection).

When the autoreclosure function is realized outside of REB500sys, all input and output signals required by the external autoreclosure equipment are available in order to guarantee correct functionality.

SynchrocheckThe synchrocheck function determines the dif-ference between the amplitudes, phase angles and frequencies of two voltage vec-tors. The synchrocheck function also contains checks for dead line and dead bus.

Transformer differential protection • For two- and three-winding transformers

• Auto transformers

• Three-phase function

• Current-adaptive characteristic

• High stability for external faults and current transformer saturation

• No auxiliary transformers necessary because of vector group and CT ratio com-pensation

• Inrush restraint using 2nd harmonic

The transformer differential protection function can also be used as an autonomous T-zone protection in a 1½ breaker scheme.

Thermal overloadThis function protects the insulation against thermal stress. This protection function is nor-mally equipped with two independently set levels and is used when oil overtemperature detectors are not installed.

Peak value over- and undercurrent protec-tionThese functions are used for current monitor-ing with instantaneous response and where insensitivity to frequency is required.

Peak value over- and undervoltage protec-tionThis function is used for voltage monitoring with instantaneous response and where in-sensitivity to frequency is required.

Frequency functionThe function is used either as an over-/ under-frequency protection, or for load-shedding in the event of an overload. Several stages of the frequency protection are often needed. This can be achieved by configuring the fre-quency function several times.

Rate of change frequency protection df/dtThis function is used for the static, dynamic and adaptive load-shedding in power utilities and industrial distribution systems. The func-tion supervises the rate-of-change df/dt of one voltage input channel. Several stages of the rate-of-change frequency protection are often

Page 14



needed. This can be achieved by configuring the rate-of-change frequency function several times.

Definite time overfluxing protectionThis function is primarily intended to protect the iron cores of transformers against exces-sive flux. The function works with a definite time delay. The magnetic flux is not measured directly. Instead the voltage/frequency-ratio, which is proportional to the flux is monitored.

Inverse time overfluxing protectionThis function is primarily intended to protect the iron cores of transformer against exces-sive flux. The function works with an inverse time delay. The inverse curve ca be set by a table of 10 values and the times t-min and t-max. The magnetic flux is not measured di-rectly. Instead the voltage/frequency-ratio, which is proportional to the flux is monitored.

Power functionThis function provides single, or three phase measurement of the real or apparent power. The function can be configured for monitoring reverse, active or reactive power (power direction setting). Phase angle errors of the CT/VT inputs can be compensated by setting. The operating mode can be configured either to underpower or to overpower protection.

Logics and delay/integratorThese functions allow the user the engineer-ing of some easily programmable logical func-tions and are available as standard also in the REB500 functionality.

Directional sensitive earth fault protection for grounded systemsA sensitive directional ground fault function based on the measurement of neutral current and voltage is provided for the detection of high-resistance ground faults in solidly or low-resistance grounded systems. The scheme operates either in a permissive or blocking mode and can be used in conjunction with an inverse time earth fault overcurrent function. In both cases the neutral current and voltage can be derived either externally or internally. This function works either with the same com-munication channel as the distance protection scheme or with an independent channel.

Directional sensitive earth fault protection for ungrounded or compensated systemsThe sensitive earth fault protection function for ungrounded systems and compensated sys-tems with Petersen coils can be set for either

forwards or reverse measurement. The char-acteristic angle is set to ±90° (U0 · I0 · sin ) in ungrounded systems and to 0° or 180° (U0 · I0 · cos ) for systems with Petersen coils. The neutral current is always used for measurement in the case of systems with Petersen coils, but in ungrounded sys-tems its use is determined by the value of the capacitive current and measurement is per-formed by a measuring CT to achieve the required sensitivity. To perform this function the BU03 with 3I, 1MT and 5U is required.

Definite time over- and undercurrent pro-tection This function is used as Main 2 or as back-up function respectively for line, transformer or bus-tie bays. This function can be activated in the phase- and/or the neutral current circuit.

Inverse time overcurrent protectionThe operating time of the inverse time over-current function reduces as the fault current increases and it can therefore achieve shorter operating times for fault locations closer to the source. Four different characteristics accord-ing to British Standard 142 designated normal inverse, very inverse, extremely inverse and long time inverse but with an extended setting range are provided. The function can be con-figured for single phase measurement or a combined three-phase measurement with detection of the highest phase current.

Inverse time earth fault overcurrent protec-tion The inverse time earth fault overcurrent func-tion monitors the neutral current of the sys-tem. Four different characteristics according to British Standard 142 designated normal inverse, very inverse, extremely inverse and long time inverse but with an extended setting range are provided.

Directional overcurrent definite / inverse time protection The directional overcurrent definite time func-tion is available either with inverse time or def-inite time overcurrent characteristic. This function comprises a voltage memory for faults close to the relay location. The function response after the memory time has elapsed can be selected (trip or block).

Definite time over- and undervoltage pro-tection This function works with a definite time delay with either single or three-phase measure-ment.

Page 15



Additional functional-ities (cont’d)

Three-phase current plausibilityThis function is used for checking the sum and the phase sequence of the three-phase cur-rents.

Three-phase voltage plausibilityThis function is used for checking the sum and the phase sequence of the three-phase volt-ages.

Additionalfeatures

Self-supervision All the system functions are continuously monitored to ensure the maximum reliability and availability of the protection. In the event of a failure, incorrect response or inconsis-tency, the corresponding action is taken to establish a safe status, an alarm is given and an event is registered for subsequent diag-nostic analysis.

Important items of hardware (e.g. auxiliary supplies, A/D converters and main and pro-gram memories) are subjected to various tests when the system is switched on and also during operation. A watchdog continuously monitors the integrity of the software functions and the exchange of data via the process bus is also continuously supervised.

The processing of tripping commands is one of the most important functions from the reli-ability and dependability point of view. Accord-ingly, every output channel comprises two redundant commands, which have to be enabled at regular intervals by a watchdog. If the watchdog condition is not satisfied, the channels are blocked.

Extension of the systemThe system functions are determined by soft-ware, configured using the software configu-ration tool.

The system can be completely engineered in advance to correspond to the final state of the station. The software modules for new bays or features can be activated using the HMI500 when the primary plant is installed or the fea-tures are needed.

Additional system functions, e.g. breaker fail-ure, end fault protection or bay level back-up / Main 2 functions can be easily acti-vated at any time without extra hardware.

Resetting the trip commands/-signalsThe following resetting modes can be selec-ted for each binary output (tripping or signal outputs):

• Latches until manually reset

• Resets automatically after a delay

Inspection/maintenanceA binary input is provided that excludes a bay unit from evaluation by the protection system. It is used while performing maintenance respectively inspection activities on the pri-mary equipment.

Redundant power supplies (Option)Two power supply modules can be fitted in a redundant arrangement, e.g. to facilitate maintenance of station batteries. This is an option for the central unit as well as for the bay unit.

Time synchronizationThe absolute time accuracy with respect to an external time reference depends on the method of synchronization used:

• no external time synchronization:accuracy approx. 1 min. per month

• periodic time telegram with minute pulse (radio or satellite clock or station control system): accuracy typically ±10 ms

• periodic time telegram as above with sec-ond pulse: accuracy typically ±1 ms

• a direct connection of a GPS or DCF77 to the central unit is possible: accuracy typi-cally ±1 ms

• Furthermore, the time synchronization can be done, if available, via the interbay bus IEC103, LON or SNTP (in case IEC61850-8-1 is used)

The system time may also be synchronized by a minute pulse applied to a binary input on the central unit.

Page 16



Requirements Optical fiber cablesA distributed busbar protection layout re-quires optical fiber cables and connectors with the following characteristics:

• 2 optical fiber cores per bay unit

• glass fibers with gradient index

• diameter of core and sheath 62.5, respectively 125 m

• maximum permissible attenuation 5 dB

• FST connector (for 62.5 m optical fibers)

• rodent protected and longitudinally water-proof if in cable ducts

Please observe the permissible bending radius when laying the cables.

The following attenuation figures are typical values which may be used to determine an approximate attenuation balance for each bay:

Fig. 9 Attenuation

Isolator auxiliary contactAuxiliary contacts on the isolators are con-nected to binary inputs on the bay units and control the status of the busbar replica in the numerical busbar protection.

One potentially-free N/O and N/C contact are required on each isolator. The N/O contact signals that the isolator is “CLOSED” and the N/C contact that the isolator is “OPEN”. Dur-ing the closing movement, the N/O contact

must close before the isolator main contact gap reaches its flashover point.

Conversely, during the opening movement, the N/O contact must not open before the iso-lator main contact gap exceeds its flashover point.

If this is not the case, i.e. the contact signals ‘no longer closed’ beforehand, then the N/C contact may not signal “OPEN” before the flashover point has been exceeded.

Fig. 10 Switching sequence of the auxiliary contacts that control the busbar replica

Optical equipmentTypicalattenuation

for gradient index (840 nm) 3.5 dB/km

per connector 0.7 dB

per cable joint 0.2 dB

Central unit Bay unit1200 m1 m1 m

FST-connector

dB

FST-connector

Openend position

must be closed

Close isolator

Auxiliary contacts:

„CLOSED“normally open

Open isolator

Flashover gap

may be closed

must be open

Isolator

Closeend position

„OPEN“normally closed

Page 17



Requirements (cont´d) Circuit-breaker replicaWhen the circuit-breaker replica is read in the feeder or the bus-tie breaker, the circuit-breaker CLOSE command must also be con-nected.

Main current transformerThe algorithms and stabilization features used make the busbar protection largely insensitive to CT saturation phenomena. Main CTs types TPS (B.S. class x), TPX, TPY, 5P.. or 10P.. are permissible.

TPX, TPY and TPZ CTs may be mixed within one substation in phase-fault schemes. The relatively low CT performance needed for the busbar protection makes it possible for it to share protection cores with other protection devices.

Current transformer requirements for sta-bility during external faults (Busbar protec-tion)The minimum CT requirements for 3-phase systems are determined by the maximum fault current.

The effective accuracy limit factor (n') must be checked to ensure the stability of the busbar protection during external faults.

The rated accuracy limit factor is given by the CT manufacturer. Taking account of the bur-den and the CT losses, the effective accuracy limit factor n' becomes:

where:

n = rated accuracy limit factor PN = rated CT powerPE = CT lossesPB = burden at rated current

In the case of schemes with phase-by-phase measurement, n' must satisfy the following two relationships:

where:

IKmax = max. primary through-fault current

I1N = rated primary CT current

Taking the DC time constant of the feeder into account, the effective n' becomes:

(2) n' 10for TN 120 ms, orn' 20for 120 ms <TN 300 ms.

where:

TN = DC time constant

Example: IKmax = 30000 AI1N = 1000 ATN 120 ms

Applying relationships (1) and (2):

(2) n' 10

Selected: n' 10

The current transformer requirements for REB500sys for Line and Transformer protec-tion are described in a separate publication [1].

Pick-up for internal faultsIn the case of internal busbar faults, CT sa-turation is less likely, because each CT only conducts the current of its own feeder.

Should nevertheless CT saturation be possi-ble, it is important to check that the minimum fault current exceeds the setting for Ikmin.

Note:For systems that measure I0, the REB500 questionnaire 1MRB520371-Ken should be filled in and submitted to ABB, so that the CT requirements can be checked in order to ensure proper I0 measurement.

EB

EN

PP

PPnn'

n1 IKmax5 I1N

-------------------(1)

n300005000

---------------- 6=(1)

Page 18



Technical data Table 3 General data

Temperature range:- operation

- storage and transport

-10°C...+ 55°C

- 40°C...+ 85°C

IEC 60255-1 (2009), EN60255-1 (2010)IEC 60255-27 (2005), EN 60255-27 (2006) IEC 60255-1 (2009), EN60255-1 (2010)IEC 60255-27 (2005), EN 60255-27 (2006)

Climate tests- Cold- Dry heat- Change of tempera-ture

- Damp heat (long-time)

-25°C / 16 h+70°C / 16 h-25° to 70°C, 1°/min, 2 cycles

+40°C; 93% rel. hum. / 10 days

EN 60068-2-1 (2008), IEC 60068-2-1 (2007),EN 60068-2-2 (1993), IEC 60068-2-2 (2007),EN 60068-2-14 (2010), IEC 60068-2-14 (2009)EN 60068-2-78 (2002), IEC 60068-2-78 (2001)

Thermal withstand of insulating materials EN 60950 (1995) Sec. 5.1

Clearance and creepage distances EN 60255-5 (2001), IEC 60255-5 (2000),EN 60950 (1995), IEC 60950 (1995)

Insulation resistance tests 0.5 kV / >100 MOhm EN 60255-5 (2001), IEC 60255-5 (2000), VDE 0411

Dielectric tests 2 kV AC or 3 kV DC / 1 min1 kV AC or 1.4 kV DC / 1 min (across open contacts)

EN 60255-5 (2001), IEC 60255-5 Cl.C (2000)EN 60950 (1995), IEC 60950 (1995)BS 142-1966, ANSI/IEEE C37.90-1989

Impulse test 1.2/50 s/0.5 Joule5 kV AC

EN 60255-5 (2001), IEC 60255-5 (2000)

Table 4 Electromagnetic compatibility (EMC)

Immunity

1 MHz burst disturbance tests

1.0/2.5 kV, 1 MHz 400 Hz rep. freq.

IEC 60255-22-1, Cl. 3 (2007), ANSI/IEEE C37.90.1-1989

Immunity Industrial environment EN 50263 (2000)

Electrostatic discharge test (ESD)

- air discharge- contact discharge

Class 3

8 kV6 kV

EN 61000-4-2 (2009),IEC 61000-4-2 (2008)EN 60255-22-2 (2009), IEC 60255-22-2 (2008)

Fast transient test (burst) Class 42/4 kV

EN 61000-4-4 (2005), IEC 61000-4-4 (2004)EN 60255-22-4 (2009), IEC 60255-22-4 (2008)

Power frequency magneticfield immunity test (50/60 Hz)

- continuous field- short duration

Class 4

30 A/m300 A/m

EN 61000-4-8 (2009), IEC 61000-4-8 (2009)

Radio frequency interference test (RFI)

Class 30.15 - 80 MHz, 80% ampli-tude modulated 10 V80 - 1000 MHz, 80% ampli-tude modulated 10 V/m900 MHz, pulse modu-lated 10 V/m

EN 61000-4-6 (2009), IEC 61000-4-6 (2008)

EN 61000-4-3 (2011), IEC 61000-4-3 (2002)

Emission- Conducted RFI - Radiated RFI

Industrial environmentTest procedure

EN 55022 (1998), CISPR 22 (1990)

Surge Class 31kV / 2kV

EN 60255-21-3 (1995), IEC 60255-21-3 (1993),IEEE 344; 2004

Page 19



Technical data (cont´d) Table 5 Mechanical tests

Hardware modules

Vibration and shock

Vibration- reponse test- endurance test

10 to 150 Hz / 0.5 gn10 to 150 Hz / 1 gn

EN 60255-21-1 (1996), IEC 60255-21-1 (1988)EN 60068-2-6 (2008) IEC 60068-2-6 (2007) IEEE 344; 2004

Shock and bump- shock

- bump

Class 1A = 15 gn; D = 11 ms pulse/axis = 3A = 10 gn; D = 16 ms pulse/axis = 1000

EN 60255-21-2 (1996), IEC 60255-21-2 (1988)EN 60068-2-27 (2010), IEC 60068-2-27 (2008)IEEE 344; 2004

Seismic (SSE) 1 to 35 Hz, 1/2 gn EN 60255-21-3 (1995), IEC 60255-21-3 (1993),IEEE 344; 2004

Table 6 Enclosure protection classes

Bay unit 19" central unit Cubicle (see Table 12)

IP40 IP20 IP40-50

Table 7 Analog inputs (Bay unit)

Currents

4 /6/8/9 input channels

I1, I2, I3, I4/I1, I2, I3, I4, I5, I6/I1, I2, I3, I4, I5, I6, I7, I8/I1, I2, I3, I4, I5, I6, I7, I8, I9

Rated current (IN) 1 A or 5 A by choice of terminals, adjustable CT ratio via HMI500

Thermal ratings:continuous

for 10 sfor 1 s

1 half-cycle

4 x IN

30 x IN100 x IN

250 x IN (50/60 Hz) (peak)

EN 60255-6 (1994),IEC 60255-6 (1988), VDE 0435, part 303

EN 60255-6 (1994),IEC 60255-6 (1988),VDE 0435, Part 303

Burden per phase 0.02 VA at IN = 1 A 0.10 VA at IN = 5 A

Voltages (optional)

1/3/5 input channels

U1/U1, U2, U3/U1, U2, U3, U4, U5

500BU03

Rated voltage (UN) 100 V, 50/60 Hz, 16.7 Hz200 V, 50/60 Hz VT ratio adjustable via HMI500

Thermal ratings:continuous

for 10 s

2 x UN

3 x UN

EN 60255-6 (1994),IEC 60255-6 (1988),VDE 0435, part 303

Burden per phase 0.3 VA at UN

Common data

Rated frequency (fN) 50 Hz, 60 Hz, 16.7 Hz adjustable via HMI500

Page 20



Table 9 Auxiliary supply

Table 8 Binary inputs/outputs (Bay unit, Central unit)

Binary outputs

General

Operating time 3 ms (typical)

Max. operating voltage 250 V AC/DC

Max. continuous rating 8 A

Max. make and carry for 0.5 s 30 A

Max. making power at 110 V DC 3300 W

Binary output reset response, programma-ble per output

- latched- automatic reset (delay 0...60 s)

Heavy-duty N/O contacts CR08...CR16, 500BU03

Heavy-duty N/O contacts CR01...CR04, CR07...CR09 - 500CU03

Breaking current for (L/R = 40 ms)1 contact

2 contacts in series

U < 50 V DC 1.5 AU < 120 V DC 0.3 AU < 250 V DC 0.1 A

U < 50 V DC 5 AU < 120 V DC 1 AU < 250 V DC 0.3 A

Signalling contacts CR01...CR07, 500BU03

Signalling contacts CR05, CR06 - 500CU03

Breaking current U < 50 V DC 0.5 AU < 120V DC 0.1 AU < 250V DC 0.04 A

Binary inputs

Number of inputs per bay unit 20 optocouplers 9 groups with common terminal

Number of inputs for central unit 12 optocouplers per binary I/O module (max. 2)3 groups with common terminal

Voltage range (Uoc) 48 to 250 V DCPick-up setting via HMI500

Pick-up current 10 mA

Operating time <1 ms

Module type Bay unit Central unit

Input voltage range (Uaux) ±25% 48 to 250 V DC 48 to 250 V DC

Fuse no fuse 10 A slow

Load 11 W 100 W

Common data

Max. input voltage interruption during which output voltage maintained

>50 ms; IEC 60255-11 (1979), VDE 0435, Part 303

Frontplate signal green "standby" LED

Switch ON/OFF

Redundancy of power supply optional in bay and in central unit

Page 21



Technical data (cont´d) Table 10 Optical interfaces

Table 12 Cubicle design

Recording facilities

Table 13 Event recorder

Number of cores 2 fiber cores per bay unit

Core/sheath diameter 62.5/125 m (multi-mode)

Max. permissible attenuation 5 dB (see Fig. 9)

Max. length approx. 1200 m

Connector Type FST for 62.5 m optical fiber cables

Table 11 Mechanical design

Mounting

Bay unit flush mounting on frames or in cubiclesHMI integrated or separately mounted

Central unit flush mounting on frames or in cubicles

Cubicle Standard type RESP97 (for details see 1MRB520159-Ken)

Dimensions w x d x h 800 x 800 x 2200 mm (single cubicle)1600 x 800 x 2200 mm (double cubicle)2400 x 800 x 2200 mm (triple cubicle) *)

*) largest shipping unit

Total weight (with all units inserted) approx. 400-600 kg per cubicle

Terminals Terminal type Connection data

Solid Strand

CTs Phoenix URTK/S 0.5 - 10 mm2 0.5 - 6 mm2

VTs Phoenix URTK/S 0.5 - 10 mm2 0.5 - 6 mm2

Power supply Phoenix UK 6 N 0.2 - 10 mm2 0.2 - 6 mm2

Tripping Phoenix UK 10-TWIN 0.5 - 16 mm2 0.5 - 10 mm2

Binary I/Os Phoenix UKD 4-MTK-P/P 0.2 - 4 mm2 0.2 - 2.5 mm2

Internal wiring gauges

CTs 2.5 mm2 stranded

VTs 1.5 mm2 stranded

Power supply 1.5 mm2 stranded

Binary I/Os 1.5 mm2 stranded

Event recorder Bay unit Central unit

System eventsProtection eventsTest events

100 total 1000 total

Page 22



Table 14 Disturbance recorder

Table 15 Interbay bus protocols

Analog channel Recording periodSample rate selectable

Options 4 currentsor9 currents

4 currentsand5 voltages

802 Hz (16.7 Hz)2400 Hz (50 Hz)2880 Hz (60 Hz)

401 Hz (16.7 Hz)1200 Hz (50 Hz)1440 Hz (60 Hz)

600 Hz (50 Hz)720 Hz (60 Hz)

Standard X X*) 1.5 s 3 s 6 s

Option 1 X X 6 s 12 s 24 s

Option 2 X X 10 s 20 s 40 s

Number of disturbance records = total recording time / set recording period (max.15)

Independent settings for pre-fault and post-fault period (min. setting 200 ms).

Format: COMTRADE 91 and COMTRADE 99

*) in Standard, voltage channels are recorded, if existing

IEC 61850-8-1

IEC 61850-8-1 interbay bus supports - Time synchronization via SNTP: typical accuracy ± 1 ms- Two independent time servers are supported. Server 2 as backup time- Optical or electrical connection- Differential current of each protection zone- Monitoring information from REB500 central unit and bay unit- Binary events (signals, trips and diagnostic)- Trip reset command- Single connection point to REB500 central unit- Disturbance recorder access via MMS file transfer protocol- Export of ICD - file, based on Substation Configuration Language SCL

LON

LON interbay bus supports - Time synchronization: typical accuracy ±1 ms- Optical connection- Differential currents of each protection zone- Binary events (signals, trips and diagnostic)- Trip reset commands- Single connection point to REB500 central unit- Disturbance recorder data (via HMI500)

IEC 60870-5-103

IEC 60870-5-103 interbay bus sup-ports

- Time synchronization: typical accuracy ±5 ms- Optical or electrical connection- Subset of binary events as specified in IEC Private range: Support of all binary events Generic mode: Support of all binary events- Trip reset command- Disturbance recording data

Address setting of station address 0...254

Sub address setting, common address of ADSU

0...255 (CAA)CAA per bay unit freely selectable

Page 23



Technical data (cont´d) Software modules

Station level functions(Applicable for nominal frequencies of 50, 60 and 16.7 Hz)

Table 16 Busbar protection (87B)Min. fault current pick-up setting (Ikmin)Neutral current detection

500 to 6000 A in steps of 100 A100 to 6000 A

Stabilizing factor (k) 0.7 to 0.9 in steps of 0.05

Differential current alarmscurrent settingtime delay setting

5 to 50% x Ikmin in steps of 5%2 to 50 s in steps of 1 s

Isolator alarmtime delay 0.5 to 90 s

Typical tripping time 20 to 30 ms at Idiff/Ikmin 5 incl. tripping relays; for fN = 50, 60 Hz30 to 40 ms at Idiff/Ikmin 5 incl. tripping relays; for fN = 16.7 Hz

CT ratio per feeder 50 to 10 000/1 A, 50 to 10 000/5 A, adjustable via HMI

Reset time 30 to 96 ms (at 1.2 <Ik/Ikmin <20); for fN = 50, 60 Hz45 to 159 ms (at 1.2 <Ik/Ikmin <20);for fN = 16.7 Hz

Table 17 Breaker failure protection (50BF)

Measurement:

Setting range 0.1 to 2 x IN in steps of 0.1 x IN

Accuracy ±5%

Timers:

Setting range for timers t1: t2:

10 to 5000 ms in steps of 10 ms0 to 5000 ms in steps of 10 ms

Accuracy ±5%

Remote trip pulse 100 to 2000 ms in steps of 10 ms

Reset ratio typically 80%

Table 18 End-fault protection (51/62EF)

Timer setting range 100 to 10,000 ms in steps of 100 ms

Current setting range 0.1 to 2 x IN in steps of 0.1 IN

Reset ratio 95%

Reset time 17 to 63 ms (at 1.2 <I/Isetting <20); for fN = 50, 60 Hz

Table 19 Overcurrent protection (51)

Characteristic definite time

Measurement:

Setting range 0.1 to 20 x IN in steps of 0.1 x IN

Setting range time delay 10 ms to 20 s in steps of 10 ms

Reset ratio typically 95%

Reset time 20 to 60 ms (at 1.2 <I/Isetting <20); for fN = 50, 60 Hz

Page 24



Table 24 Delay/integrator

Table 20 Breaker pole discrepancy protection (51/62PD)

Setting rangeTime delayDiscrepancy factor

0.1 IN to 2.0 IN in steps of 0.1 IN, default 0.2 IN100 ms to 10000 ms in steps of 100 ms, default 1500 ms0.01* Imax to 0.99 * Imax in steps of 0.01 * Imax, default 0.6 * Imax

For feeders with single phase tripping and autoreclosure, the time setting for the breaker pole discrepancy protection must be greater than the reclosure time. The discrepancy factor is the maximum permissible difference between the amplitudes of two phases.

Table 21 Current release criteria (51)

Setting range (per feeder) 0.1 IN to 4.0 IN in steps of 0.1 IN, default 0.7 IN

If the current release criteria is not activated, the tripping command (“21110_TRIP”) is given independent of current (standard setting).

The current release criteria only allows the trip of a circuit breaker if the feeder current value is above the setting value of the enabling current. This value can be individually selected for each bay.

Table 22 Voltage release criteria (27/59)

U< Setting range (per feeder)U0> Setting range (per feeder)

0.2 UN to 1.0 UN in steps of 0.05 UN, default 0.7 UN0.1 UN to 1.0 UN in steps of 0.05 UN, default 0.2 UN

If the voltage release criteria is not activated the tripping command (“21110_TRIP”) is given independent of voltage (standard setting).

The voltage release criteria is used as an additional criterion for busbar protection (as well as for the other station protection functions) and operates per zone. It can be used as U< or U0> or in combination.

Table 23 Check zone criterion (87CZ)

Min. fault current pick-up setting (Ikmin) 500 to 6000 A in steps of 100 A

Stabilizing factor (k) 0.0 to 0.90 in steps of 0.05

CT ratio per feeder Feeder 50 to 10 000/1 A,50 to 10 000/5 A, adjustable via HMI500

The check zone is used as an additional release criterion for busbar protection and operates zone-inde-pendent.

For delaying pick-up or reset or for integrating 1 binary signalProvision for inverting the input4 independent parameter sets

Settings:

Pick-up or reset time 0 to 300 s in steps of 0.01 s

Integration yes/no

Page 25



Technical data (cont´d) Table 25 Logic

Bay level functions for Back-up/Main 2 REB500sys

Logic for 4 binary inputs with the following 3 configurations:1. OR gate2. AND gate3. Bistable flip-flop with 2 set and 2 reset inputs (both OR gates), resetting takes priority

4 independent parameter sets.

All configurations have an additional blocking input.Provision for inverting all inputs.

Table 26 Definite time over- and undercurrent protection (51)

Over- and undercurrent detectionSingle or three-phase measurement with detection of the highest, respectively lowest phase current2nd harmonic restraint for high inrush currents4 independent parameter sets

Settings:

Pick-up current 0.2 to 20 IN in steps of 0.01 IN

Delay 0.02 to 60 s in steps of 0.01 s

Accuracy of the pick-up setting (at fN) ±5%

Reset ratioovercurrentundercurrent

>94% (for max. function)<106% (for min. function)

Max. operating time without intentional delay 60 ms

Inrush restraintpick-up settingreset ratio

optional0.1 I2h/I1h0.8

Table 27 Inverse time overcurrent protection (51)

Single or three-phase measurement with detection of the highest phase current4 independent parameter sets

Inverse time characteristic(acc. to B.S. 142, IEC 60255-3 with extended setting range)

normal inversevery inverseextremely inverselong time inverse

t = k1 / ((I/IB)C - 1)

c = 0.02c = 1c = 2c = 1

or RXIDG characteristic t = 5.8 - 1.35 · In (I/IB)

Settings:

Number of phases 1 or 3

Base current IB 0.04 to 2.5 IN in steps of 0.01 IN

Pick-up current Istart 1 to 4 IB in steps of 0.01 IB

Min. time setting tmin 0 to 10 s in steps of 0.1 s

k1 setting 0.01 to 200 s in steps of 0.01 s

Accuracy classes for the operating time according to B.S. 142, IEC 60255-3RXIDG characteristic

E 5.0±4% (1 - I/80 IB)

Reset ratio 95%

Page 26



Table 28 Definite time over- and undervoltage protection (59/27)

Over- and undervoltage detectionSingle or three-phase measurement with detection of the highest, respectively lowest phase voltage4 independent parameter sets

Settings:

Pick-up voltage 0.01 to 2.0 UN in steps of 0.01 UN


Accuracy of the pick-up setting (at fN) ±2% or ±0.005 UN

Reset ratio (U 0.1 UN)overvoltageundervoltage

>96% (for max. function)<104% (for min. function)


Table 29 Inverse time earth fault overcurrent protection (51N)

Neutral current measurement (derived externally or internally)4 independent parameter sets



t = k1 / ((I/IB)C - 1)

c = 0.02c = 1c = 2c = 1

or RXIDG characteristic t = 5.8 - 1.35 · In (I/IB)

Settings:

Number of phases 1 or 3


Pick-up current Istart 1 to 4 IB in steps of 0.01 IB

Min. time setting tmin 0 to 10 s in steps of 0.1 s

k1 setting 0.01 to 200 s in steps of 0.01 s

Accuracy classes for the operating time according to B.S. 142, IEC 60255-3RXIDG characteristic

E 5.0±4% (1 - I/80 IB)

Reset ratio 95%

Table 30 Directional overcurrent definite time protection (67)

Directional overcurrent protection with detection of power flow directionBack-up protection4 independent parameter sets

Three-phase measurement Suppression of DC and HF components Definite time characteristicVoltage memory for near faultsSelectable response when power direction no longer valid (trip or block)

Settings:

Current 0.02 to 20 IN in steps of 0.01 IN

Angle -180° to +180° in steps of 15°


Wait time 0.02 to 20 s in steps of 0.01 s

Page 27



Technical data (cont´d) Memory duration 0.2 to 60 s in steps of 0.01 s

Accuracies:Measuring accuracies are defined by: Frequency range 0.9…1.05 fN Sinusoidal voltage including 3., 5., 7. and 9. harmonic

Accuracy of pick-up valueReset ratioAccuracy of angle measurement (at 0.97…1.03 fN)

±5%95%±5°

Voltage input range Voltage memory range Accuracy of angle measurement at voltage memory Frequency dependence of angle measurement at

voltage memory Response time without delay

0.005 to 2 UN<0.005 UN±20°

±0.5°/Hz60 ms

Table 31 Directional overcurrent inverse time protection (67)

Directional overcurrent protection with detection of power flow directionBack-up for distance protection4 independent parameter sets

Three-phase measurement Suppression of DC and HF components Inverse time characteristic Voltage memory for near faultsSelectable response when power direction no longer valid (trip or block)

Settings:

Current 1 to 4 IN in steps of 0.01 IN

Angle -180° to +180° in steps of 15°



t = k1 / ((I/IB)C - 1)

c = 0.02c = 1c = 2c = 1

t-min 0 to 20 in steps of 0.01

IB-value 0.04 to 2.5 IN in steps of 0.01 IN

Wait time 0.02 to 20 s in steps of 0.01 s

Memory duration 0.2 to 60 s in steps of 0.01 s

Accuracies:Measuring accuracies are defined by: Frequency range 0.9…1.05 fN

Accuracy of pick-up value Reset ratioAccuracy of angle measurement (at 0.97…1.03 fN)

±5%95%±5°

Voltage input range Voltage memory range Accuracy of angle measurement at voltage memory Frequency dependence of angle measurement at

voltage memory Response time without delay

0.005 to 2 UN<0.005 UN±20°

±0.5°/Hz60 ms

Page 28



Table 32 Directional sensitive EF protection for ungrounded or compensated systems (32N)

Determination of real or apparent power from neutral current and voltage

Settings:

Pick-up power SN 0.005 to 0.1 SN in steps of 0.001 SN

Reference value of the power SN 0.5 to 2.5 UN · IN in steps of 0.001 UN · IN

Characteristic angle -180° to +180° in steps of 0.01°

Phase error compensation of current input -5° to +5° in steps of 0.01°


Reset ratio 30 to 95% in steps of 1%

Accuracy of the pick-up setting ±10% of setting or 2% UN · IN (for protection CTs)±3% of setting or 0.5% UN · IN (for measuring CTs)


The directional sensitive EF protection for ungrounded or compensated systems requires the BU03 type with 3I + 1MT + 5U

Table 33 Three-phase current plausibility / Three-phase voltage plausibility (46/47)

A plausibility check function is provided for the three-phase current and three-phase voltage input which performs the following:Determination of the sum and phase sequence of the 3 phase currents or voltages4 independent parameter sets

Accuracy of the pick-up setting at rated frequency ±2% IN in the range 0.2 to 1.2 IN±2% UN in the range 0.2 to 1.2 UN

Reset ratio 90% whole range>95% (at U > 0.1 UN or I > 0.1 IN)

Current plausibility settings:

Pick-up differential for sum of internal summation current 0.05 to 1.00 IN in steps of 0.05 IN

Amplitude compensation for summation CT -2.00 to +2.00 in steps of 0.01


Voltage plausibility settings:

Pick-up differential for sum of internal summation voltage 0.05 to 1.2 UN in steps of 0.05 UN

Amplitude compensation for summation VT -2.00 to +2.00 in steps of 0.01


Table 34 Directional sensitive earth fault protection for grounded systems (67N)

Detection of high-resistance earth faultsCurrent enabling setting 3I0Direction determined on basis of neutral variables (derived externally or internally)Permissive or blocking directional comparison schemeEcho logic for weak infeedsLogic for change of energy direction4 independent parameter sets

Settings:

Current pick-up setting 0.1 to 1.0 IN in steps of 0.01 IN

Voltage pick-up setting 0.003 to 1 UN in steps of 0.001 UN

Characteristic angle -90° to +90° in steps of 5°

Delay 0 to 1 s in steps of 0.001 s

Accuracy of the current pick-up setting ±10% of setting

Page 29



Technical data (cont´d)

Remark: Distance protection operating times on next page

Table 35 Distance protection (21)

Five measuring stages with polygonal impedance characteristic forward and backwardAll values of settings referred to the secondaries, every zone can be set independently of the others4 independent parameter sets

Impedance measurement -300 to 300 /ph in steps of 0.01 /ph

Zero-sequence current compensation 0 to 8 in steps of 0.01,-180° to +90° in steps of 1°

Mutual impedance for parallel circuit lines 0 to 8 in steps of 0.01,-90° to +90° in steps of 1°

Time step setting range 0 to 10 s in steps of 0.01 s

Underimpedance starters -999 to 999 /ph in steps of 0.1 /ph

Overcurrent starters 0.5 to 10 IN in steps of 0.01 IN

Min. operating current 0.1 to 2 IN in steps of 0.01 IN

Back-up overcurrent 0 to 10 IN in steps of 0.01 IN

Neutral current criterion 0.1 to 2 IN in steps of 0.01 IN

Neutral voltage criterion 0 to 2 UN in steps of 0.01 UN

Low-voltage criterion for detecting, for exam-ple, a weak infeed

0 to 2 UN in steps of 0.01 UN

VT supervisionNPS/neutral voltage criterionNPS/neutral current criterion

0.01 to 0.5 UN in steps of 0.01 UN0.01 to 0.5 IN in steps of 0.01 IN

Accuracy (applicable for current time con-stants between 40 and 150 ms)

amplitude errorphase errorSupplementary error for- frequency fluctuations of +10% - 10% third harmonic- 10% fifth harmonic

±5% for U/UN >0.1±2° for U/UN >0.1

±5%±10%±10%

Operating times of the distance protection function (including tripping relay)

minimumtypical(see also isochrones)

20 ms25 ms

Typical reset time 25 ms

VT-MCB auxiliary contact requirementsOperation time <15 ms

Page 30



Distance protection operating times

Isochrones

Abbreviations: ZS = source impedanceZF = fault impedanceZL = zone 1 impedance setting

Single phase fault (min)

0

0.2

0.4

0.6

0.8

1

0.1 1 10 100 1000

18ms

Single phase fault (max)

0

0.2

0.4

0.6

0.8

1

0.1 1 10 100 1000

31ms

29ms

SIR (ZS/ZL)

ZF/Z

L

ZF/Z

L

SIR (ZS/ZL)

18ms17ms

Two phase fault (min)

0

0.2

0.4

0.6

0.8

1

0.1 1 10 100 1000

Two phase fault (max)

0

0.2

0.4

0.6

0.8

1

0.1 1 10 100 1000

29ms

32ms

ZF/Z

L

ZF/Z

L

SIR (ZS/ZL) SIR (ZS/ZL)

18ms17ms

19ms

Three phase fault (min)

0

0.2

0.4

0.6

0.8

1

0.1 1 10 100 1000

20ms

Three phase fault (max)

0

0.2

0.4

0.6

0.8

1

0.1 1 10 100 1000

29ms

33ms

ZF/Z

L

ZF/Z

L

SIR (ZS/ZL) SIR (ZS/ZL)

18ms17ms

Page 31



Technical data (cont´d) Table 36 Autoreclosure (79)

Single and three-phase autoreclosureOperation in conjunction with distance, overcurrent and synchrocheck functions and also with external

protection and synchrocheck relaysLogic for 1st and 2nd main protections, duplex and master/follower schemesUp to four fast or slow reclosure shotsDetection of evolving faults4 independent parameter sets

Settings:

1st reclosure none1P fault - 1P reclosure1P fault - 3P reclosure1P/3P fault - 3P reclosure1P/3P fault - 1P/3P reclosure

2nd to 4th reclosure nonetwo reclosure cyclesthree reclosure cyclesfour reclosure cycles

Single phase dead time 0.05 to 300 s

Three-phase dead time 0.05 to 300 s

Dead time extension by ext. signal 0.05 to 300 s

Dead times for 2nd, 3rd and 4th reclosures 0.05 to 300 s

Fault duration time 0.05 to 300 s

Reclaim time 0.05 to 300 s

Blocking time 0.05 to 300 s

Single and three-phase discrimination times 0.1 to 300 s

All settings in steps of 0.01 s

Table 37 Synchrocheck (25)

Determination of synchronismSingle phase measurement. The differences between the amplitudes, phase-angles and frequencies of two voltage vectors are determined.

Voltage supervisionSingle or three-phase measurementEvaluation of instantaneous values and therefore wider frequency rangeDetermination of maximum and minimum values in the case of three-phase inputs

Phase selection for voltage inputsProvision for switching to a different voltage input (double busbar systems)Remote selection of operating mode4 independent parameter sets

Settings:

Max. voltage difference 0.05 to 0.4 UN in steps of 0.05 UN

Max. phase difference 5 to 80° in steps of 5°

Max. frequency difference 0.05 to 0.4 Hz in steps of 0.05 Hz

Min. voltage 0.6 to 1 UN in steps of 0.05 UN

Max. voltage 0.1 to 1 UN in steps of 0.05 UN

Supervision time 0.05 to 5 s in steps of 0.05 s

Resetting time 0 to 1 s in steps of 0.05 s

AccuracyVoltage differencePhase differenceFrequency difference

for 0.9 to 1.1 fN±5% UN±5°±0.05 Hz

Page 32



Table 38 Transformer differential protection (87T)

For two- and three-winding transformers Three-phase function Current-adaptive characteristic High stability for external faults and current transformer saturation No auxiliary transformers necessary because of vector group and CT ratio compensation Inrush restraint using 2nd harmonic

Settings:

g-setting 0.1 to 0.5 IN in steps of 0.05 IN

v-setting 0.25 or 0.5 or 0.7

b-setting 1.25 to 2.5 in steps of 0.25 IN

Max. trip time (protected transformer loaded)- for I >2 IN- for I2 IN

30 ms50 ms

Accuracy of pick-up value ±5% IN (at fN)

Reset conditions I <0.8 g-setting

Accuracy of pick-up value ±5% IN (at fN)

Reset conditions I <0.8 g-setting

Differential protection definitions:

I = I1+ I2 + I3

for cos for cos I'1 = MAX (I1, I2, I3)I'2 = I1 + I2 + I3 - I'1

= (I'1;- I'2)

Differential protection characteristic

Table 39 Thermal overload (49)

Thermal image for the 1st order model Single or three-phase measurement with detection of maximum phase value

Settings:


Alarm stage 50 to 200% TN in steps of 1% N

Tripping stage 50 to 200% N in steps of 1% N

Thermal time constant 2 to 500 min in steps of 0.1 min

Accuracy of the thermal image ±5% N (at fN)

0

cos'I'II 21H

Protected unitI1

I3

I2

Operation

Operation for

or

IH

IN

IIN

Restraint

1 2 3b

gv

1

2

3

I'1IN

< b

I'2IN

< b

HEST 965 007 C

Page 33



Technical data (cont´d) Table 40 Peak value over- and undercurrent protection (50)

Maximum or minimum function (over- and undercurrent)Single or three-phase measurementsWide frequency range (0.04 to 1.2 fN)Peak value evaluation

Settings:

Current 0.1 to 20 IN in steps of 0.1 IN

Delay 0 to 60 s in steps of 0.01s

Accuracy of pick-up value (at 0.08 to 1.1 fN) ±5% or ±0.02 IN

Reset ratio >90% (for max. function)<110% (for min. function)

Max. trip time with no delay (at fN) 30ms (for max. function)60ms (for min. function)

Table 41 Peak value over- and undervoltage protection (59)

Maximum or minimum function (over- and undervoltage)Single or three-phase measurementsPeak value evaluation

Settings:

Voltage 0.01 to 2 UN in steps of 0.01 UN

Delay 0 to 60 s in steps of 0.01 s

Limiting fmin 25 to 50 Hz in steps of 1 Hz

Accuracy of pick-up value (at 0.08 to 1.1 fN) ±3% or ±0.005 UN

Reset ratio >90% (for max. function)<110% (for min. function)

Max. trip time with no delay (at fN) 30ms (for max. function)60ms (for min. function)

Table 42 Frequency function (81)

Maximum or minimum function (over- and underfrequency)Minimum voltage blocking

Settings:

Frequency 40 to 65 Hz in steps of 0.01 Hz


Minimum voltage blocking 0.2 to 0.8 UN in steps of 0.1 UN

Accuracy of pick-up value ±30 mHz at UN and fN

Reset ratio 100%

Starting time <130 ms

Page 34



Table 43 Rate of change frequency protection df/dt (81)

Maximum or minimum function (over- and underfrequency)Minimum voltage blocking

Settings:

df/dt -10 to +10 Hz/s in steps of 0.1 Hz/s

Frequency 0 to 55 Hz in steps of 0.01 Hz at fN = 50 Hz50 to 65 Hz in steps of 0.01 Hz at fN = 60 Hz


Minimum voltage blocking 0.2 to 0.8 UN in steps of 0.1 UN

Accuracy of df/dt (at 0.9 to 1.05 fN) ±0.1 Hz/s

Accuracy of frequency (at 0.9 to 1.05 fN) ±30 mHz

Reset ratio 95% for max. function105% for min. function

Table 44 Definite time overfluxing protection (24)

Single-phase measurementMinimum voltage blocking

Settings:

Pick up value 0.2 to 2 UN/fN in steps of 0.01 UN/fN


Frequency range 0.5 to 1.2 fN

Accuracy (at fN) ±3% or ±0.01 UN/fN

Reset ratio >98% (max.), <102% (min.)

Starting time 120 ms

Table 45 Inverse time overfluxing protection (24)

Single-phase measurement Inverse time delay according to IEEE Guide C37.91-1985 Setting made by help of table settings

Settings:

Table settings U/f values: (1.05; 1.10 to 1.50) UN/fN

Start value U/f 1.05 to 1.20 UN/fN in steps of 0.01 UN/fN

tmin 0.01 to 2 min in steps of 0.01 min

tmax 5 to 100 min in steps of 0.1 min

Reference voltage UB-value 0.8 to 1.2 UN in steps of 0.01 UN

Accuracy of pick-up value 0.8 to 1.2 UN in steps of 0.01 UN

Frequency range 0.5 to 1.2 fN

Reset ratio 100%

Starting time <120 ms

Page 35



Technical data (cont´d) Table 46 Power protection (32)

Measurement of real or apparent power Protection function based on real or apparent power measurement Reverse power protection Over- and underpower Single or three-phase measurement Suppression of DC components and harmonics in current and voltage Compensation of phase errors in main and input CTs and VTs

Settings:

Power pick-up -0.1 to 1.2 SN in steps of 0.005 PN

Characteristic angle -180° to +180° in steps of 5°


Power factor comp. (Phi) -5° to +5° in steps of 0.1°

Rated power PN 0.5 to 2.5 UN × IN in steps of 0.001 UN × IN

Reset ratio 30% to 170% in steps of 1% of power pick-up

Accuracy of the pick-up setting ±10% of setting or 2% UN × IN(for protection CTs)±3% of setting or 0.5% UN × IN(for core-balance CTs)


Page 36



Connection diagrams

Inputs / outputs central unit

Fig. 11 Central unit module; Connection of power supply, binary inputs and outputs

Binary inputs Binary outputs

500BIO01

500PSM03

aux

Alarm

Warning

123

4

5

6

2

1


500BIO01

Optional I/O board

Optional redundant power supply

500PSM03

aux

Alarm

Warning

123

4

5

6

1

2

Abbreviations Explanation

OCxx CRxx

optocoupler Tripping relay

Terminal block/ terminals

ExplanationWire gauge/ Type

ABP

Binary inputsBinary outputsPower supply

1.5 mm2

1.5 mm2

1.5 mm2

Page 37



Connection diagrams (cont´d)

Fig. 12 Wiring diagram of bay units 500BU03, types 1-8

Bay unit types Available inputs/outputs 500BU03_4 (4 I, 20/16 I/O, stand-alone) � � � 500BU03_2 (4 I, 5 U, 20/16 I/O, stand-alone) � � � � 500BU03_6 (3 I, 1MT, 5 U, 20/16 I/O, stand-alone) � � � � 500BU03_1 (4 I, 5 U, 20/16 I/O, stand-alone) red. power supply � � � � � 500BU03_5 (3 I, 1MT, 5 U, 20/16 I/O, stand-alone)red. power supply � � � � � 500BU03_4 (4 I, 20/16 I/O, classic-mounting) � � � 500BU03_2 (4 I, 5 U, 20/16 I/O, classic-mounting) � � � � 500BU03_6 (3 I, 1MT, 5 U, 20/16 I/O, classic-mounting) � � � � 500BU03_1 (4 I, 5 U, 20/16 I/O, classic-mounting) red. power supply � � � � � 500BU03_5 (3 I, 1MT, 5 U, 20/16 I/O, classic-mounting) red. power supply � � � � � 500BU03_8 (9 I, 20/16 I/O, stand-alone) � � � 500BU03_7 (9 I, 20/16 I/O, stand-alone) red. power supply � � � � 500BU03_8 (9 I, 20/16 I/O, classic-mounting) � � � 500BU03_7 (9 I, 20/16 I/O, classic-mounting) red. power supply � � � �

*) 1 Measuring transformer in 500BU03_5 or 500BU03_6


Function Wire gauge/ Type

A, B Binary inputs 1.5 mm2

C, D Binary outputs 1.5 mm2

E Rx Tx

Optical connection Receive Transmit

FST plug FST plug

I, J Currents 2.5 mm2

U Voltages 1.5 mm2

P, R Supply 1.5 mm2

Abbreviations Explanation OCxx CRxx OLxx

Opto-coupler Tripping relay Optical link

I1[1]

I1[5]

I1[0]

I2[1]

I2[5]

I2[0]

I3[1]

I3[5]

I3[0]

I4[1]

I4[5]

I4[0]

+-

R

I0

DC

HMI

H

123456789

101112

+-

P

I0

B

D

A

C

Tx

Rx

I

Rx Tx

E

U1U1[0]

U2U2[0]

U3U3[0]

U4U4[0]

U5U5[0]

U

500BU03

��I1[1]

I1[5]

I1[0]

I2[1]

I2[5]

I2[0]

I3[1]

I3[5]

I3[0]

I4[1]

I4[5]

I4[0]

+-

R

0I

DC

HMI

H

123456789

101112

123456789

101112131415161718

+-

P

0I

B

D

A

C

Tx

Rx

Rx Tx

I1[1]

I1[5]

I1[0]

I2[1]

I2[5]

I2[0]

I3[1]

I3[5]

I3[0]

I4[1]

I4[5]

I4[0]

I5[1]

I5[5]

I5[0]

I6[1]

I6[5]

I6[0]

JE

I7[1]

I7[5]

I7[0]

I8[1]

I8[5]

I8[0]

I9[1]

I9[5]

I9[0]

500BU03

�� I

Binary Inputs1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

OC01

OC02

OC03

OC04

OC05

OC06

OC07

OC08

16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

OC01

OC02

OC03

OC04

OC05

OC06

OC07

OC08

A

16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

OC10

OC11

OC12

OC13

OC14

OC15

OC16

17

18OC09

OC17

OC18

OC19

OC20

16

17

18

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

OC10

OC11

OC12

OC13

OC14

OC15

OC16

B

17

18OC09

OC17

OC18

OC19

OC20

16

17

18

Processbus

Binary Outputs1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

CR01

CR02

CR03

CR04

CR05

CR06

CR07

CR08

CR09

CR10

CR11

CR12

CR13

CR14

CR15

CR16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

CR01

CR02

CR03

CR04

CR05

CR06

CR07

CR08

CR09

CR10

CR11

CR12

CR13

CR14

CR15

CR16

C

D

OL01

Tx

Rx

E

Current Transformer

1

5

0

Power Supply

1

5

0

I1

2

3

I1

I2

4

5

6

1

5

0

I3

7

8

9

HMI InterfaceH

+_

1

2

P

Current Transformer

1

5

0

Redundant Power Supply

1

5

0

J1

2

3

I4

I5

4

5

6

1

5

0

I6

7

8

9

+_

1

2

R

1

5

0

I7

10

11

12

1

5

0

I8

13

14

15

1

5

0

I9

16

17

18

Current Transformer

1

5

0

Power Supply

1

5

0

1

5

0

I1

2

3

I1

I2

4

5

6

1

5

0

I3

7

8

9

I4

10

11

12

HMI InterfaceH

+_

1

2

P

Voltage Transformer


U

+_

1

2

R

0

1

2

U1

0

4

5

U2

0

7

8

U3

0

10

11

U4

0

13

14

U5

*)

Page 38



Fig. 13 Wiring diagram of bay units 500BU03, types 9-12

Bay unit types Available inputs/outputs 500BU03_10 (8 I, 1U, 20/16 I/O, stand-alone) � � � �

500BU03_12 (6 I, 3 U, 20/16 I/O, stand-alone) � � � �500BU03_ 9 (8 I, 1U, 20/16 I/O, stand-alone) red. power supply � � � � �500BU03_11 (6 I, 3 U, 20/16 I/O, stand-alone) red. power supply � � � � �500BU03_10 (8 I, 1U, 20/16 I/O, classic-mounting) � � � �500BU03_12 (6 I, 3 U, 20/16 I/O, classic-mounting) � � � �500BU03_ 9 (8 I, 1U, 20/16 I/O, classic-mounting) red. power supply � � � � �500BU03_11(6 I, 3 U, 20/16 I/O, classic-mounting) red. power supply � � � � �


Function Wire gauge/ Type

A, B Binary inputs 1.5 mm2

C, D Binary outputs 1.5 mm2

E Rx Tx

Optical connection Receive Transmit

FST plug FST plug

I Currents 2.5 mm2

J Currents and voltages

P, R Supply 1.5 mm2

Abbreviations Explanation OCxx CRxx OLxx

Opto-coupler Tripping relay Optical link

+-

R

I0

DC

HMI

H

123456789

101112

123456789

101112131415161718

+-

P

I0

B

D

A

C

Tx

Rx

I

Rx Tx

I1[1]

I1[5]

I1[0]

I2[1]

I2[5]

I2[0]

I3[1]

I3[5]

I3[0]

I4[1]

I4[5]

I4[0]

I5[1]

I5[5]

I5[0]

I6[1]

I6[5]

I6[0]

I7[1]

I7[5]

I7[0]

I8[1]

I8[5]

I8[0]

U1

U1[0]

JE

500BU03

+-

R

I0

DC

HMI

H

123456789

101112

123456789

101112131415161718

+-

P

I0

B

D

A

C

Tx

Rx

I

Rx Tx

I1[1]

I1[5]

I1[0]

I2[1]

I2[5]

I2[0]

I3[1]

I3[5]

I3[0]

I4[1]

I4[5]

I4[0]

I5[1]

I5[5]

I5[0]

I6[1]

I6[5]

I6[0]

JE

U1

U1[0]

U2

U2[0]

U3

U3[0]

500BU03

Binary Inputs1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

OC01

OC02

OC03

OC04

OC05

OC06

OC07

OC08

16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

OC01

OC02

OC03

OC04

OC05

OC06

OC07

OC08

A

16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

OC10

OC11

OC12

OC13

OC14

OC15

OC16

17

18OC09

OC17

OC18

OC19

OC20

16

17

18

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

OC10

OC11

OC12

OC13

OC14

OC15

OC16

B

17

18OC09

OC17

OC18

OC19

OC20

16

17

18

Processbus

Binary Outputs1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

CR01

CR02

CR03

CR04

CR05

CR06

CR07

CR08

CR09

CR10

CR11

CR12

CR13

CR14

CR15

CR16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

CR01

CR02

CR03

CR04

CR05

CR06

CR07

CR08

CR09

CR10

CR11

CR12

CR13

CR14

CR15

CR16

C

D

OL01

Tx

Rx

E

Current Transformer

1

5

0

Power Supply

1

5

0

I1

2

3

I1

I2

4

5

6

1

5

0

I3

7

8

9

HMI InterfaceH

+_

1

2

P

Current Transformer

1

5

0


1

5

0

J1

2

3

I4

I5

4

5

6

1

5

0

I6

7

8

9

+_

1

2

R

0

U1

10

11

0

U2

13

14

0

U3

16

17

Voltage Transformer

Current Transformer

1

5

0

Power Supply

1

5

0

I1

2

3

I1

I2

4

5

6

1

5

0

I3

7

8

9

HMI InterfaceH

+_

1

2

P

Current Transformer


J

+_

1

2

R

1

5

0

1

5

0

1

5

0

1

2

3

I4

I5

4

5

6

1

5

0

I6

7

8

9

I7

10

11

12

1

5

0

I8

13

14

15

0

U1

16

17

Voltage Transformer

Page 39




Bay unit 500BU03 connection diagrams

A detailed description of each variant is given in the application description [2].

Fig. 14 Bay unit connection diagram 500BU03, 4I, 5U

Bay unit Protection functions

500BU03 Station level Bay level Measurement valueA

nalo

gin

puts

Bus

barp

rote

ctio

nB

reak

erfa

ilure

prot

ectio

nEn

dfa

ultp

rote

ctio

nPo

ledi

scre

panc

ypr

otec

tion

Volta

gech

eck

Dis

turb

ance

reco

rder

Dis

tanc

epr

otec

tion

Def

inite

time

over

and

unde

rcur

rent

prot

ectio

nIn

vers

etim

eov

ercu

rren

tpro

tect

ion

Dire

ctio

nalo

verc

urre

ntde

finite

time

prot

ectio

nD

irect

iona

love

rcur

rent

inve

rse

time

prot

ectio

nD

efin

itetim

eov

eran

dun

derv

olta

gepr

otec

tion

Sync

hroc

heck

Dire

ct.s

ensi

tive

EFpr

ot.f

orgr

ound

edsy

stem

sD

irect

.sen

sitiv

eEF

prot

.for

ungr

.orc

omp.

syst

ems

Inve

rse

time

eart

hfa

ulto

verc

urre

ntpr

otec

tion

Cur

rent

plau

sibi

lity

chec

kVo

ltage

plau

sibi

lity

chec

k

Currents

I1 �� Phase current L1 (Line)

I2 � � � � � � � � � � � � � Phase current L2 (Line)

I3 � � � � � � � � � � � � � Phase current L3 (Line)

I4 � � � Neutral current Lo (Y) (Line)

� � Neutral current derrived internally Io=��IL1+IL2+IL3

Voltages

U1 � � � � � � � Phase voltage L1 (Line)



U4 � � � Phase voltage L2 (Bus 1) 1ph -> L2-E

U5 � � Phase voltage L2 (Bus 2) 1ph -> L2-E

� � Neutral voltage derrived internally Uo=��UL1+UL2+UL3

Current transformer/voltage transformer fixed assignment Recommended setting/ respectively free for selection (configured via software HMI500-REBWIN) Only for busbar protection Io-measurement (optional function) Bay unit types with measuring CT (torroid CT) on input I4

Derived internally

��

Derived internally

10

12

0

1

5

1

2

3

0

4

5

1

5

6

0

7

5

1

8

9

0

5

111

2 0

1

5 0

4

8 0

7

11 0

10

13

14 0

Page 40



Fig. 15 Bay unit connection diagram 500BU03, 9I

Bay unit Protection functions

500BU03 Station level Bay level Measurement value

Ana

log

inpu

ts

Bus

bar

prot

ectio

n

Bre

aker

-failu

repr

otec

tion

End

-faul

tpro

tect

ion

Pol

edi

scre

panc

ypr

otec

tion

Dis

turb

ance

reco

rder

Tran

sfor

mer

diffe

rent

ialp

rote

ctio

nTh

erm

alov

erlo

ad

Pea

kva

lue

over

and

unde

rcur

rent

prot

ectio

nIn

vers

etim

eov

ercu

rren

tpro

tect

ion

Inve

rse

time

eart

hfa

ulto

verc

urre

ntpr

otec

tion

Def

inite

time

over

and

unde

rcur

rent

prot

ectio

nTh

ree

phas

ecu

rren

tpla

usib

ility

Currents

I1 �� Phase current L1 A-side

I2 � � � � � � � � � � � � Phase current L2 A-side


� Neutral current derrived internally Io=��IL1+IL2+IL3

Currents

I4 � � � � � � � Phase current L1 B-side



Neutral current derrived internally Io=��IL1+IL2+IL3

Currents

I7 � � � � � � � Phase current L1 C-side (if existing)



Neutral voltage derrived internally Uo=��UL1+UL2+UL3

Derived internally

��

A-sideB-sideC-side

Transformer primary side Transformer secondary side Transformer tertiary side

Derived internally

Derived internally

Current transformer, fixed assignment Recommended setting/ respectively free for selection (configured via software HMI500-REBWIN) Only for busbar protection Io-measurement (optional function) Configured either on A-side, or on B-side or on C-side respectively

0

1

5

1

2

3

0

4

5

15

6

0

7

51

8

9

I

0

1

5

1

2

3

0

4

5

15

6

0

7

51

8

9

J

0

10

5

1

11

12

0

13

5

1

14

15

0

16

51

17

18

J

Page 41





Bay Unit Protection functions


Ana

log

inpu

ts

Bus

barp

rote

ctio

nB

reak

erfa

ilure

prot

ectio

nEn

dfa

ultp

rote

ctio

nPo

ledi

scre

panc

ypr

otec

tion

Dis

turb

ance

reco

rder

Dis

tanc

epr

otec

tion

Def

inite

time

over

and

unde

rcur

rent

prot

ectio

nIn

vers

etim

eov

ercu

rren

tpro

tect

ion

Dire

ctio

nalo

verc

urre

ntde

finite

time

prot

ectio

nD

irect

iona

love

rcur

rent

inve

rse

time

prot

ectio

nD

efin

itetim

eov

eran

dun

derv

olta

gepr

otec

tion

Dire

ct.s

ensi

tive

EFpr

ot.f

orgr

ound

edsy

stem

sIn

vers

etim

eea

rth

faul

tove

rcur

rent

prot

ectio

nTh

ree

phas

ecu

rren

tpla

usib

ility

Thre

eph

ase

volta

gepl

ausi

bilit

yTr

ansf

orm

erdi

ffer

entia

lpro

tect

ion

Ther

mal

over

load

Peak

valu

eov

eran

dun

derc

urre

ntpr

otec

tion

Peak

valu

eov

eran

dun

derv

olta

gepr

otec

tion

Def

inite

time

over

fluxi

ngpr

otec

tion

Inve

rse

time

over

fluxi

ngpr

otec

tion

Rat

eof

chan

gefr

eque

ncy

prot

ectio

nFr

eque

ncy

Pow

er

Currents


I2 � � � � � � � � � � � � � � � � � Phase current L2 A-side

I3 � � � � � � � � � � � � � � � � � Phase current L3 A-side

� � � Neutral current derrived internally Io=��IL1+IL2+IL3

Currents

I4 � � � � � � � � � � � � � � � � � Phase current L1 B-side



� � Neutral current derrived internally Io=��IL1+IL2+IL3

Voltages

U1 � � � � � � � � � � � � � Phase voltage L1 A-side or B-side



� � Neutral voltage derrived internally Uo=��UL1+UL2+UL3

A-sideB-side

Transformer primary side Transformer secondary side

Current transformer/voltage transformer fixed assignment Recommended setting/ respectively free for selection (configured via software HMI500-REBWIN) Only for busbar protection Io-measurement (optional function) Configured either on A-side, or on B-side respectively

Derrived internally

��

Derrived internally

Derrived internally

0

1

5

12

3

0

4

5

1

5

6

0

7

5

1

8

9

11 0

10

14 0

13

17 0

16

0

1

5

1

2

3

0

4

5

1

5

6

0

7

5

18

9

I

J

J

Page 42




Bay Unit Protection functions


Ana

log

inpu

ts

Bus

bar

prot

ectio

n

Bre

aker

failu

repr

otec

tion

End

faul

tpro

tect

ion

Pol

edi

scre

panc

ypr

otec

tion

Dis

turb

ance

reco

rder

Def

inite

time

over

and

unde

rcur

rent

prot

ectio

nIn

vers

etim

eov

ercu

rren

tpro

tect

ion

Inve

rse

time

eart

hfa

ulto

verc

urre

ntpr

otec

tion

Thre

eph

ase

curr

entp

laus

ibili

tyTr

ansf

orm

erdi

ffere

ntia

lpro

tect

ion

Ther

mal

over

load

Pea

kva

lue

over

and

unde

rcur

rent

prot

ectio

nD

efin

itetim

eov

erflu

xing

prot

ectio

nIn

vers

etim

eov

erflu

xing

prot

ectio

n

Currents




� Neutral current derrived internally Io=��IL1+IL2+IL3

Currents

I4 � � � � � � � � Phase current L1 B-side



Neutral current derrived internally Io=��IL1+IL2+IL3

Currents

I7 � � � Current Lx (e.g. Lo)

I8 � � � Current Lx (e.g.Lo)

Voltages

U1 � � � Voltage Lx (e.g. Phase L1-L2 -> Overfluxing protection )

A-sideB-side

Transformer primary side Transformer secondary side

Current transformer/voltage transformer fixed assignment Recommended setting/ respectively free for selection (configured via software HMI500-REBWIN) Only for busbar protection Io-measurement (optional function) Configured either on A-side, or on B-side respectively

Derrived internally

��

Derrived internally

0

1

5

1

2

3

0

4

5

15

6

0

7

51

8

9

17 0

16

0

1

5

1

2

3

0

4

5

15

6

0

7

51

8

9

I

J

J

0

10

5

1

11

12

0

13

5

114

15

J

Page 43




REB500: Typical assignment of the in/outputs

Fig. 18 REB500: Typical assignment of the in/outputs of a central unit for busbar and breaker failure pro-tection

Fig. 19 REB500: Typical assignment of the in/outputs for a double busbar with busbar and breaker failure protection of a bay unit

OC01

1

OC02

2

OC03

3

OC04

4

5

6

OC05

7

OC06

8

OC07

9

OC08

10

11

12

OC09

13

OC10

14

OC11

15

OC12

16

17

18

1

2

3

4

5

CR01

CR02

CR03

6

7CR04

8

9

10

11

12

13

CR05

CR06

14

15

16

17

18

CR07

CR08

CR09

Accept bus image alarm

External reset

Block of all protection functions

Block output relays

Block busbar protection

Block breaker failure protection

Test generator active

Isolator alarm

Switch inhibited

System alarm

In service

Differential current alarm

Busbar protection tripped

Breaker failure protection tripped

Protection blocked / Output relays blocked


1

2

3

4

5

67

8

9

1011

12

13

14

15

OC01

OC02

OC03

OC04

OC05

OC06

OC07

OC08

1

2

34

5

6

7

8

9

10

11

12

13

14

15

OC10

OC11

OC12

OC13

OC14

OC15

OC16

A

B

16

17

18OC09

OC17

OC18

OC19

OC20

16

1718

Binary Inputs

Bus 1 Isolator Q1 offBus 1 Isolator Q1 onBus 2 Isolator Q2 off

Bus 2 Isolator Q2 on

rt BFP protection 1 L1L2L3

Start BFP protection 1 L1Start BFP protection 1 L2

Start BFP protection 1 L3


Start BFP protection 2 L3t BFP protection 2 L1L2L3

In Service

Block close command

Remote Trip, channel 1


Trip Phase L1, trip coil 1Trip Phase L2, trip coil 1Trip Phase L3, trip coil 1


1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

CR01

CR02

CR03

CR04

CR05

CR06

CR07

CR08

CR09

CR10

CR11

CR12

CR13

CR14

CR15

CR16

C

D

Binary outputs

Page 44



REB500sys: Typical assignment of the in-/outputs

Fig. 20 REB500sys: Typical assignment of the in-/outputs of line variant L-V4 for 500BU03(See [2] Application description)

1

2

3

4

5

67

8

9

1011

12

13

14

15

OC01

OC02

OC03

OC04

OC05

OC06

OC07

OC08

1

2

34

5

6

7

8

9

10

11

12

13

14

15

OC10

OC11

OC12

OC13

OC14

OC15

OC16

A

B

16

17

18OC09

OC17

OC18

OC19

OC20

16

1718

Binary Inputs Variant L-V4

Bus 1 Isolator Q1 offBus 1 Isolator Q1 on

Bus 2 Isolator Q2 on

Start BFP protection 1 L1L2L3


Start BFP protection 1 L3

Carrier Receive, Distance Prot.Carrier Receive, DEF Prot.

Bus 1 VT MCB FailBus 2 VT MCB Fail

Bus 2 Isolator Q2 off

Breaker Q0 offBreaker Q0 on

Breaker Q0 Close Command

Prepare 3 Pole Trip,from Main1Main 1 Healthy/In Service Mode (Blk. AR)

Line VT MCB FailCB All Poles Closed for DEF Prot.

OCO Ready for AR Release

In Service

Block close command





1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

CR01

CR02

CR03

CR04

CR05

CR06

CR07

CR08

CR09

CR10

CR11

CR12

CR13

CR14

CR15

CR16

C

D

Binary outputs Variant L-V4

AR Close Command

Carrier Send, Distance Prot.

Carrier Send, DEF Prot.

Start L1L2L3 to AR in Main 1Trip CB 3-Pole to AR in Main 1Trip CB to AR in Main 1

Page 45




Fig. 21 REB500sys: Typical assignment of the in-/outputs of transformer variant T-V1 for 500BU03(See [2] application description)

Start BFP phase L1L2L3 from back-up prot. TRIP

Start BFP phase L1L2L3 from prot. group 2 TRIP

Transf. prot. trip L1L2L3 group 2Tripping relay (94-2) trip CB A/B/C–side *)

1

2

3

4

5

67

8

9

1011

12

13

14

15

OC01

OC02

OC03

OC04

OC05

OC06

OC07

OC08

1

2

34

5

6

7

8

9

10

11

12

13

14

15

OC10

OC11

OC12

OC13

OC14

OC15

OC16

A

B

16

17

18OC09

OC17

OC18

OC19

OC20

16

1718

Binary inputsTransformerVariant 1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

CR01

CR02

CR03

CR04

CR05

CR06

CR07

CR08

CR09

CR10

CR11

CR12

CR13

CR14

CR15

CR16

C

D

Binary outputsTransformerVariant 1

In service

Block close command breaker Q0 A-side

Transf. prot. trip L1L2L3 group 1Tripping relay (94-1) trip CB A/B/C–side *)

Transf. prot. trip � start BFP on B-side

Transf. prot. trip � start BFP on C-side *)

Remote Trip 1 to C-side *)

Trip phase L1

Trip phase L2

Trip phase L3

Remote trip 1 to B-side

Remote trip 2 to B-side

Trip phase L1

Trip phase L2

Trip phase L3

Block transformer diff. protection

Transformer diff. inrush input

Transformer diff. high-set

A-side breaker Q0manual close command

A-side breaker Q0 open

A-side breaker Q0 closed

A-side bus 1 isolator Q1 open

A-side bus 1 isolator Q1 closed

A-side bus 2 isolator Q2 open

A-side bus 2 isolator Q2 closed

Mechanic protection TRIP 2

Mechanic protection alarm 2

Spare

Spare

Mechanic protection TRIP 1

Mechanic protection alarm 1

Spare

External start BFP from mechanic prot. TRIP

Legend:

A-side � Transformer primary sideB-side � Transformer secondary sideC-side � Transformer tertiary side *)

*) � C-side, if existing

Trip breaker Q0 coil 1 A-side

Trip breaker Q0 coil 3 A-side

Page 46



Dimensioned drawings (in mm)

Bay unit 500BU03

Fig. 22 Bay unit casing for flush mounting, enclosure protection class IP 40 (without local HMI)

Fig. 23 Centralized version based on a 19'' mounting plate with up to three bay units. Optionally with local HMI.

Caution

Achtung

Atencion

Attention

Cross section: max. 2.5 mm2

max. 4.0 mm2

Spa

ce f

or

wiri

ng

Cross section: max. 2.5 mm2

max. 4.0 mm2

Spa

ce fo

r w

iring

Page 47



Dimensioned draw-ings (in mm) (cont´d)

Bay unit 500BU03

Fig. 24 Dimensional drawing of the bay unit with local HMI, classical mountingprotection type IP40

Central unit

Fig. 25 Dimensional drawing of the central unit, protection type IP20

Cross section max. 2.5 mm2

max. 4.0 mm2

Space for wiring

Panel cutout

223

276

app

rox.

100

189

6U=

265.

8

25

2102

67+

0.1

20

00

.5±

204 0.5±

Rear view

appr

ox.7

021

2

482.6

6U=

265.

8

appr

ox.2

35

30

443

465.6

6U=

265.

8

57.1

57.1

76.2

Page 48



Cubicle mounting

Fig. 26 Front view of REB500 (example only) Fig. 27 Hinged frame and rear wall

Example with 9 bay units

The cubicles are equipped with gratings for the fixation of incoming cables. For space reasons there are no cable ducts.

Table 47 Maximum number of units per cubicle (central version)

Unit Quantity of 500BU03Cross-section

ext. cable

Quantity of system cables

per bay

Current transformer per bay 4 8 6 9 2.5 mm2 - 6 mm2 1

Voltage transformer per bay 5 1 3 - 1.5 mm2 - 6 mm2 1

Binary inputs per bay 20 1.5 mm2 - 2.5 mm2 1 - 3

Binary outputs per bay 16 1.5 mm2 - 2.5 mm2 1 - 3

Max. number of bays per cubicle with central unit

9* * number of bays per cubicle(2200 x 800 x 800 mm)based on the min. cross-section and an average quantity of cables

Max. number of bays per cubicle without central unit

12*

Page 49



Cubicle mounting (cont’d)

Basic version Basic version with HMI Classic version

Fig. 28 Possible arrangement of the bay unit with HMI

Sample specification

Combined numerical bay and station protec-tion with extensive self-monitoring and ana-log/digital conversion of all input quantities.

The architecture shall be decentralized, with bay units and a central unit.

It shall be suitable for the protection of single and double busbar as well as for the protec-tion (Main 2 or back-up) of incoming and out-going bays, lines, cables or transformer bays.

The hardware shall allow functions to be acti-vated from a software library:

• Busbar protection scheme based on low- impedance principle and at least two inde-pendent tripping criteria

• End fault protection

• Breaker failure protection

• Breaker pole discrepancy

• Additional criteria for the busbar protection as overcurrent or voltage release

• Over-/undercurrent and over-/undervolt-age back-up bay function (overcurrent directional or non-directional)

Table 48 Unit weights

Unit Weight

Bay unit 4l, classic (incl. HMI) 5.1 kg

Bay unit 4l, 5U, red. power supply, classic (incl. HMI)Bay unit 3l, 1MT, 5U, red. power supply, classic (incl. HMI)

6.2 kg

Bay unit 4l, basic version 3.9 kg

Bay unit 4l, 5U, red. power supply, basic versionBay unit 3l, 1MT, 5U, red. power supply, basic version

5.0 kg

Bay unit 9I, red. power supply, classic (incl. HMI) 6.7 kg

Bay unit 9I, red. power supply, basic version 5.5 kg

Central unit 9.0 kg (Average weight => here 11 feeders plus communication interface)

Central unit with redundant power supply 10.0 kg

Page 50



• Distance protection function with all rele-vant additional features, such as switch-on-to-fault, teleprotection schemes, voltage supervision, power swing blocking

• Earth fault directional function based on zero components with separate communi-cation scheme or using the same channel as the distance protection

• Directional sensitive earth fault protection for ungrounded or compensated systems

• Autoreclosure function, single/three pole and multi-shot

• Synchrocheck function with the different operation modes (dead line and /or dead bus check)

• Thermal overload protection

• Peak value over-/undervoltage function

• Transformer differential protection for the protection of two or three-winding trans-formers and autotransformers

No auxiliary CTs are necessary and the sys-tem contains internal check of the voltage and current circuits. The adaptation of the CT- ratio is done by software.

A modern human machine interface shall allow the allocation of input and output sig-nals.

Communication via computer or via interface to monitoring or control systems allows the actual configuration of the whole busbar to be displayed.

Event and disturbance recording shall be included, collection of data in the bay units, comprehensive recording available for the whole station in the central unit.

The proposed system shall be easily extensi-ble, in case of extensions in the substation.

Ordering Ordering

When sending your enquiry please provide the short version of the questionnaire on page 55 in this data sheet together with a single-line

diagram of the station. This will enable us to submit a tender that corresponds more accu-rately to your needs.

Page 51



Ordering (cont’d) Ordering code

REB500-CU03-V76 -S -P -B -CA

NoLON

2nd Binary Input Module

No (12 inputs / 9 outputs) 0Yes (24 inputs /18 outputs) 1

Red. Power Supply

No 0Yes, for 1-30 bay units 1

Equipped for

10 bay units 1020 bay units 2030 bay units 30

IEC 103IEC 61850-8-1

40 bay units, incl. 2nd rack 4050 bay units, incl. 2nd rack 5060 bay units, incl. 2nd rack 60

Yes, for 1-60 bay units 2

Communication Interface A

-CB

No 0LON 1IEC 103 2

Communication Interface B

0123

IEC 61850-8-1 3

Page 52



Short questionnaire

mandatory ordering information

Accessories

HMI software

HMI500 Ver. 7.50/7.60 Operator Quantity 1MRB260027R0076

HMI500 Ver. 7.50/7.60 Configurator * Quantity 1MRB260027R0176* HMI500 Configurator is including software license for 4 users(authorization by serial number). Please note license is only provided for trained customers!

Central unit module500CIM06 Communication card IEC 103 ,IEC 61850 Quantity 1MRB150077R0111500CIM06 Communication card IEC 103 ,IEC 61850 , LON Quantity 1MRB150077R0112500CPU05 Processor unit complete Quantity 1MRB150081R0001500BIO01 Binary I/O card Quantity 1MRB150005R0001500PSM03 Power supply 100 W Quantity 1MRB150038R0001500SCM01 Star coupler module Quantity 1MRB150004R0001

Manuals

Operating instructions REB500/REB500sys in English Quantity 1MRB520292-Uen

Fiber optic cables

2 core FO-cable *5.00 m, indoor, ready made incl. 4 connectors Quantity HESP417456R0005




Page 53



Ordering (cont’d)

LHMI

500HMI03 * 0.5 m, local HMI with 0.5 m cable Quantity 1MRB150073R0052

500HMI03 * 3 m, local HMI with 3 m cable Quantity 1MRB150073R0302

Miscellaneous

500OCC02 Converter cable (serial) HMI-PC Quantity 1MRB380084R0001

500OCC03 Converter cable (USB) HMI-PC Quantity 1MRB380084R0003

Mounting parts

Cover plate 4R 4R (4 divisions) Quantity 1MRB400164 R0004


Mounting plate 19"

Mounting plate 19", 7U, max. 3 500BU03, no display cut-out

Quantity 1MRB400299 P0101

Mounting plate 19"

Mounting plate 19", 7U, max. 3 500BU03, with display cut-out


HMI Cover plate HMI Cover plate for mounting on unused dis-play cut-outs

Quantity 1MRB400304 R0101

Mounting plate 19"

Mounting plate 19", 7U, 1 x 500BU03 classic cut out


0No1Transformer variant 1 (T-V1)2Transformer variant 2 (T-V2)3Transformer variant 3 (T-V3)4Transformer variant 4 (T-V4)

Transformer protection

Line protection

No 0Line variant 1 (L-V1) 1Line variant 2 (L-V2) 2Line variant 3 (L-V3) 3Line variant 4 (L-V4) 4Line variant 5 (L-V5) 5

-P -F -BB -IO -R -OC -BFP -EFP -PD -DR -L -TREB500-BU03-V7-C -A

Line variant 6 (L-V6) 6Line variant 7 (L-V7) 7

Page 54



Short questionnaire

mandatory ordering information

Accessories

1. Client Client Station Client's reference Client's representive, date

2. ABB (filled in by ABB) Tender No.: Order No.: Sales Engineer Project Manager

3. Binding Single line diagram Diagram No. Date Rev. Index Rev. Date Remark : (must show location and configuration This attachment is of spare bays) absolutely essential !4. HV System System Voltage [kV] Neutral Grounding Busbar configuration

Solidly grounded Single 1-1/2 BreakerIsolated Double Ring bus

Frequency [Hz] Compensated Triple Transfer busLow resistance gr. Quadruple

Switchgear Circuit Breaker typeAIS GIS Single pole Three pole

5. Trip circuits Tripping methodOne trip coil Two trip coils

6. Type of installation Distributed CU loose delivered Centralized CU and BU loose delivered

BU loose delivered

Distributed CU mounted in cubicle Centralized CU and BU mounted in cubicles

BU mounted in cubicles

HMI software

HMI500 Ver. 7.60 Operator Quantity 1MRB260027R0076

HMI500 Ver. 7.60 Configurator * Quantity 1MRB260027R0176

* HMI500 Configurator is including software license for 4 users(authorization by serial number). Please note license is only provided for trained customers!

Central unit module

500CIM06 Communication card IEC 103 ,IEC 61850 Quantity 1MRB150077R0111

500CIM06 Communication card IEC 103 ,IEC 61850 , LON Quantity 1MRB150077R0112

500CPU05 Processor unit complete Quantity 1MRB150081R0001

500BIO01 Binary I/O card Quantity 1MRB150005R0001

500PSM03 Power supply 100 W Quantity 1MRB150038R0001

500SCM01 Star coupler module Quantity 1MRB150004R0001

Manuals

Operating instructions REB500/REB500sys in English Quantity 1MRB520292-Uen

Fiber optic cables





Page 55



Ordering (cont’d)LHMI

500HMI03 * 0.5 m, local HMI with 0.5 m cable Quantity 1MRB150073R0052

500HMI03 * 3 m, local HMI with 3 m cable Quantity 1MRB150073R0302

Miscellaneous

500OCC02 Converter cable (serial) HMI-PC Quantity 1MRB380084R0001

500OCC03 Converter cable (USB) HMI-PC Quantity 1MRB380084R0003

Mounting parts



Mounting plate 19"

Mounting plate 19", 7U, max. 3 500BU03, no display cut-out


Mounting plate 19"

Mounting plate 19", 7U, max. 3 500BU03, with display cut-out


HMI Cover plateHMI Cover plate for mounting on unused dis-play cut-outs

Quantity 1MRB400304 R0101

Mounting plate 19"



Page 56



Other relevant publications

[1] CT requirements for REB500 / REB500sys 1KHL020347-AEN

[2] Application description REB500sys 1MRB520295-Aen

[3] Data sheet PSM505 1MRB520376-Ben

Operating instructions REB500 / REB500sys 1MRB520292-Uen

Data sheet RESP07 1KHA005034-BEN

Reference list REB500 1MRB520009-Ren

Ordering questionnaire REB500 1MRB520371-Ken

Mounting plate 19"



Mounting parts

Page 57

www.abb.com/substationautomation

1MR

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-Ben

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Contact us

ABB Switzerland LtdPower SystemsBruggerstrasse 72CH-5400 BadenTel. +41 58 585 77 44Fax +41 58 585 55 77E-mail: [email protected]

ABB ABSubstation Automation ProductsSE-721 59 VästeråsTel. +46 21 34 20 00Fax +46 21 32 42 23E-mail: [email protected]

Documents

Substation Automation Products Distributed busbar ... Automation Products Distributed busbar protection REB500 including line and transformer protection Page 3 • Three-phase current