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Sepam 15 / Sepam series 40 Substitution Manual

1Schneider Electric

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2 Schneider Electric

Presentation

IntroductionThis document should answer the questions you may have concerning the substitution offer to replace Sepam 15 by Sepam series 40.In a certain number of cases, a complete study wil be required and we are at your disposal to answer your specific technical questions.

Nota : When a Sepam 15 "CS" (non-magnetic sensors) is replaced by a Sepam series 40, the non-magnetic sensors must be replaced by "CT" current transformers.

The equivalence table below shows that the Sepam series 40 range with advanced UMI is the optimal substitute for Sepam 15 versions.

Sepam 15 / Sepam series 40 equivalencesSepam 15 Sepam series 40

102 M41112 M41

202 T40312 S41 (1)

402 S42

502 M41512 M41602 S42

702 S42(1) The resistive earth fault function EPATR 50G/51G (specific to EDF) is not available with Sepam series 40.

Nota : The basic Sepam series 40 has 4 logic outputs; a logic input/output extension module may be added to meet application requirements:

- MES108 with 4 inputs / 4 outputs,- MES114 with 10 inputs / 4 outputs.

AdvantagesThe substitution operation enables:� replacement of Sepam 15 with no major cubicle modifications� improvement of communication performance (RS 485 instead of current loop)� 24/250 V DC auxiliary power supply� integration of new functions:� network diagnosis assistance functions� machine operating assistance functions� switchgear diagnosis assistance functions.

Nota : If the functions included in Sepam series 40 are insufficient or unsuited to your application, the complete Sepam 2000 range can provide you with the appropriate solution.

3Schneider Electric

Mechanical adaptation and connectors

PresentationTo use Sepam series 40 as a substitute for Sepam 15, a mounting accessory is required. It consists of a drilled metal plate, which is installed in place of the Sepam 15 unit.

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Example of mounting accessory

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Connection equivalences Sepam 15 Sepam series 40Function name terminal item no. name terminal item no.

Current input X5 2-3-4 B 1-4-5-6Earth fault input X2 7-8 A 19-18

Voltage input X4 1-2-3-4 E 1-2-3-5-6Logic inputs I1 X1 13-14 I11 M 1-2 (1)

I2 X1 15-16 I12 M 4-5 (1)

I3 X1 17 I13 M 7-8 (1) I4 X2 1 I14 M 10-11 (1) I5 X2 2 I21 K 1-2 (2)

I6 X2 3 I22 K 6 (2)

I7 X2 4 I23 K 7 (2)

I8 X2 5 I24 K 8 (2)

I25 K 9 (2)

I26 K 10 (2)

common X2 6 common K 5-4

Logic outputs (3) O1 X1 1-2-3 O1 A 4-5O2 X1 4-5-6 O2 A 7-8O3 X1 7-8-9 O3 A 10-11

O4 X1 10-11-12 O11 L 2-3 (1) O5 X2 9-10-11 O12 L 5-6 (1) O6 X2 12-13-14 O13 L 8-9 (1)

O14 L 11-12 (1) Watchdog X2 15-16-17 O4 A 13-14-15Power supply X3 1-7 A 1-2

Communication X6 C(1) logic input/output extension module MES 108 is required.(2) logic input/output extension module MES 114 is required.(3) for NO/NC contacts, use a second output.

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Mechanical adapation and connectors

Sepam 15 connection

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General diagram

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X6 transmission coupler

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Rear view

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Mechanical adaptation and connectors

Sepam series 40 connection� base unit � base unit connector:- power supply,- relay output,- CSH30, 120, 200 or ACE990 input.Screw-type connector shown (CCA620), or ring lug connector (CCA622)� 1/5 A CT current input connector (CCA630) or LPCT current input connector (CCA670)� ACE949-2 communication module interface (green)� remote inter-module interface (black)� voltage input connection, screw-type connector shown (CCA626) or ring lug connector (CCA627)� optional input/output module (MES108 or MES114)� MES108 or MES114 module connectors� MES114 module connector.

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Nota : For more about connections, please refer to "Sepam series 40 Installation and Use Manual", reference PCRED301006EN, item 08554.

1A

B

CDE

2L MK

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K

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Protection settings

Setting range equivalences

Functions Type of sensors Sepam 15 Sepam series 40Thermal overload settings time delay settings time delay

negative sequence factor N/A 0 - 2.254.5 - 9

heating time constants 5 to 120 mn 1 to 600 mn

cooling time constants N/A 5 to 600 mnhot state:% of rated thermal capacity 50% to 200% 0% to 300%tripping:% of rated thermal capacity 50% to 200% 0% to 300%

Phase overcurrentdefinite time DT 0.05 to 20 In 0.05 to 655 s 0.1 to 24 In 0.05 to 300 sIDMT SIT VIT EIT 0.4 to 1.3 In 0.1 to 10 s 0.1 to 2.4 In 0.1 to 12.5 s

Earth faultdefinite time DT ∑3 phase I 0.05 to 20 Ino 0.05 to 655 s 0.1 to 15 Ino 0.05 to 300 s

core balance CT 1 to 255 A 0.05 to 655 s N/A

2 A rated CSH N/A 0.2 to 30 A 0.05 to 300 s5 A rated CSH N/A 0.5 to 75 A 0.05 to 300 s20 A rated CSH N/A 2 to 300 A 0.05 to 300 s

1 A or 5 A CT N/A 0.1 to 15 Ino 0.05 to 300 sACE990 N/A 0.1 to 15 Ino 0.05 to 300 s

IDMT SIT VIT EIT ∑3 phase I 0.06 to 2 Ino 0.1 to 4 s 0.1 to 1 Ino 0.1 to 12.5 s

2 A rated CSH N/A 0.2 to 2 A 0.1 to 12.5 s5 A rated CSH N/A 0.5 to 5 A 0.1 to 12.5 s20 A rated CSH N/A 2 to 20 A 0.1 to 12.5 s

1 A or 5 A CT N/A 0.1 to 1 Ino 0.1 to 12.5 sACE990 N/A 0.1 to 1 Ino 0.1 to 12.5 s

Undercurrent0.05 to 1 Is 0.05 to 655 s 0.15 to 1 Ib 0.05 to 300 s

Negative sequence / unbalancedefinite time 0.05 to 20 In 0.1 to 655 s 0.1 to 5 Ib 0.1 to 300 sIDMT N/A 0.1 to 0.5 Ib 0.1 to 1 sExcessive starting time/ locked rotor

setpoint 2.5 Is fixed 0.5 to 5 IbST start time 0.5 to 655 s 0.05 to 300 sLT locked rotor 0.5 to 655 s 0.05 to 300 s

Number of startsstarts per hour 1 to 200 1 to 60consecutive cold starts N/A 1 to 60

consecutive hot starts N/A 1 to 60time between starts 0.5 to 655 s 0.05 to 300 sUndervoltage

0.05 to 1.2 Un 0.05 to 655 s 0.05 to 1 Un 0.05 to 300 sOvervoltage

0.5 to 2 Un 0.05 to 655 s 0.5 to 1.5 Un 0.05 to 300 s

Directional overcurrentcharacteristic angle 0°, 30°, 45°,

60°, 90°30°, 45°, 60°

definite time DT 0.05 to 20 In 0.05 to 655 s 0.1 to 24 In 0.05 to 300 sIDMT SIT VIT EIT 0.4 to 1.3 In 0.1 to 10 s 0.1 to 2.4 In 0.1 to 12.5 s

Directional earth faultcharacteristic angle 0°, 30°, 45°,

60°, 90°-45°, 0°, 15°, 30°, 45°, 60°, 90°

definite time DT ∑3 phase I 0.05 to 20 Ino 0.05 to 655 s 0.1 to 15 Ino 0.05 to 300 score balance CT 1 to 255 A 0.05 to 655 s N/A

2 A rated CSH N/A 0.2 to 30 A 0.05 to 300 s5 A rated CSH N/A 0.5 to 75 A 0.05 to 300 s20 A rated CSH N/A 2 to 300 A 0.05 to 300 s

1 A or 5 A CT N/A 0.1 to 15 Ino 0.05 to 300 sACE990 N/A 0.1 to 15 Ino 0.05 to 300 s

Reminder: � Un is the rated phase-to-phase voltage of the voltage sensors.� In is the current sensor current (CT rating).� Is is the equipment service current, adjustable from 0.4 to 1.3 In for Sepam 15� Ib is the equipment base current, adjustable from 0.4 to 1.3 In for Sepam series 40.These values are general parameters which are set when Sepam is commissioned.

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Control logic

Sepam series 40 units have a standard control logic scheme. The control logic may be converted by:� parameter setting on the front of the Sepam unit or using the SFT2841 sofware toolExampleSepam 15

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Sepam series 40

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Control logic

� equation editor using the SFT2841 software tool.

Nota : For information on the use of the equation editor, please refer to "Sepam series 40 Installation and Use Manual", reference PCRED301006EN, item 08554.

Example: disconnection of a medium voltage motor by an undervoltage protection unit and restarting triggered by return to rated voltage (overvoltage protection).

Sepam 15

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Sepam series 40

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Nota : Breaker tripping must be devalidated in the undervoltage and overvoltage protection settings.

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Control logic

Protection function contact equivalencesSepam 15 Sepam series 40Contacts Type of contacts ItemsThermal overload

F431 alarm 49RMS (1) F432 tripping 49RMS (1)

F433 motor > 0.05 Is N/AInstantaneous phase overcurrent

F11-F21-F31-F41 definite time protection 50/51 (2)

F51-F251 standard inverse time units 1 to 4F61-F261 very inverse time output variablesF71-F271 extremely inverse time instantaneous output

Example: P50/51-1-1Time-delayed phase overcurrent

F12-F22-F32-F42 definite time definite time (1) F52-F252 standard inverse time 50/51 standard inverse time

SIT (1) F62-F262 very inverse time units 1 to 4 very inverse time VIT (1) F63-F263 extremely inverse time extremely inverse time

EIT (1) Instantaneous earth fault

F81-F91-F101-F111 definite time ∑3Iprotection 50N/51N (2)

units 1 to 4output variables

instantaneous outputExample: P50N/51N-1-1

F151-F161-F171-F181

definite tme on core balance CT

F121 standard inverse timeF131 very inverse time

F141 extremely inverse timeTIme-delayed earth fault

F82-F92-F102-F112 definite time ∑3I

50N/51Nunits 1 to 4

definite time (1) F152-F162-F172-F182

definite tme on core balance CT

definite time (1

F122 standard inverse time standard inverse time SIT (1)

F132 very inverse time very inverse time VIT (1) F142 extremely inverse time extremely inverse time

EIT (1) Instantaneous undercurrent

F221 phase 1 protection 37 (2)

units 1 to 4output variables

instantaneous output F231 phase 2 N/AF241 phase 3 N/A

Time-delayed undercurrentF222 phase 1 37 unit 1 definite time (1) F232 phase 2

N/A (single-phase protection)F242 phase 3Negative sequence / unbalance

F452-F462 definite time 46 unit 1 à 2 definite time (1)

Locked rotor / excessive starting timeF441 excessive starting time protection 48/51LR

unit 1 variable de sortie

excessive starting time (2) F442 delayed start starting in progress (2)

F443 locked rotor locked rotor (2) F444 F441 or F443 48-51LR (1) Number of starts

F421 F422 or F423 66 (1) F422 number of hot starts N/AF423 number of cold starts N/A

Instantaneous undervoltageF321-F331 U13 protection 27/27S (2) (3)

units 1 and 2output variables

instantaneous output

F341-F351 U21

F361-F371 U32

Time-delayed undervoltageF322-F332 U13

27/27S (1) (3)

units 1 and 2F342-F352 U21F362-F372 U32

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Control logic

Protection function contact equivalencesSepam 15 Sepam series 40Contacts Type of contacts ItemsInstantaneous overvoltage

F301-F311 protection 59 (2)

units 1 and 2output variables

instantaneous outputTime-delayed overvoltage

F302-F312 59 units 1 to 2 0.05 to 300 sInstantaneous directional phase overcurrent

F511 F513 or F514

protection 67 unit 1output variables

instantaneous output (2)

F513 I1 in tripping zone instantaneous outputphase 1 (2)

F514 I3 in tripping zone instantaneous outputphase 3 (2)

Time-delayed directional phase overcurrentF512 67 units 1 to 2 (1) Instantaneous directional earth fault

F501 F513 or F514 protection 67 (2) unit 1

output variables instantaneous output

F503 Io < 1 A or Vo < 1.5% Un

N/A

F504 Io > 275 A N/ATime-delayed directional earth fault

F502 67N unit 1 (1) Resistive earth fault

F491-F492 N/A(1) parameter setting(2) equation editor(3) this protection function is activated whenever one of the three voltages drops below the setpoint.

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Modbus communication

There are two main parts in the replacement of Sepam 15 by Sepam series 40:� physical interface part� logical interface part which includes programs, addresses and data formats.

Physical interface

Sepam 15

Communication is via a 4-wire, 20 mA loop type serial asynchronous link.If the higher level communication port is a standardized RS 232 ou RS 485 type link, a converter is required to transform the link into the current loop type (see figure 1).

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Figure 1

Sepam series 40

Communication is via a serial asynchronous link in voltage differential mode of the standardized 2-wire RS 485 type. An auxiliary power supply must be provided for the Sepam series 40 communication interface.

If the higher level communication port is:� a standardized RS 232 type serial link, use an RS 232 - RS 485 converter (see figure 2)� a standardized RS 485 type serial link, use an RS 485 - RS 485 converter (see figure 3)� a current loop link, use a standard, commercially-available BDC - RS 485 converter (see figure 4).

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Figure 2

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Modbus communication

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Figure 3

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Figure 4

Link setupCertain values are not parameterizable and are imposed by Sepam.

Parameters Sepam 15 Sepam series 40number of start bits imposed setting 1 imposed setting 1

number of working bits imposed setting 8 imposed setting 8

number of parity bits imposed setting 1 imposed setting 1

number of stop bits imposed setting 1 imposed setting 1

type of current loop 0 or 20 mA, line deactivated N/A

parity imposed setting even even, odd or none

slave number 1 to 255 1 to 255

transmission rate 300 to 4800 bauds 4800 to 38400 bauds

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Modbus communication

Logical interfaceSepam 15 and Sepam series 40 use the same Modbus protocol and the function codes are the same as well.However, the data tables are structured differently (content, addressing, data format). The differences must be taken into account by the higher level program.

Addressing table

Sepam 15 Sepam series 40Designation Address Functions Designation Address Functions

diagnosis 0000 to 0001 1, 2, 3, 4 check word 0100 1, 2, 3, 4, 7

internal bits K1 to K144 0002 to 000A 1, 2, 3, 4 remote monitoringTS1 to TS144 (1)

0101 to 0109 1, 2, 3, 4

time delays T1 to T16 000B 1, 2, 3, 4 N/Acounters C1 to C8 000C 1, 2, 3, 4 N/Ainputs I1 to I8 000D 1, 2, 3, 4 logic input

I11 to I14 et I21 to I26010B 1, 2, 3, 4

outputs O1 to O6 000E 1, 2, 3, 4 logic outputsO1 to O4 and O11 to O14

010D 1, 2, 3, 4

internal bits K701 to K748 000F to 0011 1, 2, 3, 4 N/A

internal bits K781 to K796 0012 1, 2, 3, 4, 5, 6 remote control TC1 to TC16 00F0 1, 2, 3, 4, 5, 6, 15, 16internal bits K813 to K940 0013 to 001A 1, 2, 3, 4 N/Aprotection functions F11 to F998 0200 to 0231 1, 2, 3, 4, 5, 6 remote monitoring

TS1 to TS144 (1) 0101 to 0109 1, 2, 3, 4

protection settings 0300 to 04FF 3, 4 protection settings (2) 1E80 query1E00 reply1F00 setting

3, 6, 1633, 16

metering 0200 to 0231 3, 4 metering 0113 to 0158 3,4time-tagging 0600 3, 4, 6 events (3) 0040 3, 6, 16

0601 to 062B 1, 2, 3, 4, 0041 to 0060 3setpoints T1 to T16 0700 to 070F 3, 4 N/Acounter C1 to C8 status 0710 to 0717 3, 4 N/A

(1) in Sepam series 40, remote indications are preassigned to protection or control functions, which depend on the Sepam model.(2) in Sepam series 40, the protection setting values may be changed via the communication link.(3) in Sepam series 40, time-tagging is absolute from Sepam’s internal clock; the clock must be synchronized with the remote monitoring and control system.

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Core balance CTs

This chapter indicates the compatibility of Sepam 15 and Sepam series 40 core balance CTs.

� Sepam 15 core balance CTs� MN (diameter 120, white)� SN (diameter 200, white)� TF (diameter 30, green)� PF (diameter 50, green)� MF (diameter 100, green)� SF (diameter 200, green)� GF (diameter 300, green)� PO (diameter 46, split)� GO (diameter 110, split),

� Sepam series 40 core balance CTs� CSH 30 (diameter 30)� CSH 120 (diameter 120)� CSH 200 (diameter 200).

AccuracyThe Sepam 15 core balance CTs have the same transformation ratio as the CSH core balance CTs specially designed for Sepam series 40. This means that they are compatible with Sepam series 40.The measurement accuracy of ± 5 % is the same.The phase accuracy is not known for the Sepam 15 core balance CTs.

Core balance CT polarityThere was no polarity identification (PI, P2) with the Sepam 15 core balance CTs.When core balance CT polarity is important (directional functions), the connection must be validated by the test described below:� make sure to comply with the direction of the flow of energy.

To detect the mounting direction, carry out the test below:� when the DC current is interrupted, the ammeter needle should move in the negative direction before going back to 0� when the DC current is applied, the ammeter needler should move in the positive direction before going back to 0.

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CablingThe cabling requirements of Sepam series 40 must be complied with:� use of sheathed, shielded cable,� since the cable shielding is grounded by Sepam series 40, no other grounding should be done.

1 A or 5 A core balance CTWith Sepam series 40, residual current may be measured by standard 1 A or 5 A core balance CTs.In such cases, the CSH 30 core balance CT is used as an interface between the CT and Sepam.For accuracy reasons, no other core balance CTs (old or new generation) should be used in place of the CSH 30.

Nota : Please refer to "Sepam series 40 Installation and Use Manual", reference PCRED301006EN, item 08554.

DC generator:4.5 V DC battery

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Notes

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Notes

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As standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication.

This document has been printed on ecological paper

Produced by: Schneider ElectricPublished by: Schneider ElectricPrinted by: Imprimerie des Deux Ponts 07-2002

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