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USM-1 Meter Advanced Electronics Company, Ltd.

P. O. Box 90916

Riyadh 11623

Kingdom of Saudi Arabia

1(6)A, 5(6)A Class 0.2s

3 Phase 4 Wires and 3 Phase 3 Wires

CT-VT Through Connection

Multi Tariff Digital Energy Meter

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Revision History

Revision Date Highlights

- January 2014 Preliminary Electrical Parameters

1 March 2014 First release

2 May 2014 Add information about IRIG-B port Add electrical connection diagram

3 May 2014 Update connection diagram for 3P3W system, figure 4.3.

4 June 2014 Update terminal insulation parameters

5 June 2014 Update auxiliary supply nominal input. Update 3P3W connection diagram.

6 June 2014 Update auxiliary supply nominal input.

7 January 2015 Update Electrical Specifications

8 April 2015 Update photos

9 January 2017 Update supported protocols

Notice The information contained in this document is subject to change without notice. AEC makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. AEC shall not be liable for errors contained herein or incidental consequential damages in connection with the furnishing, performance, or use of this material. This document contains proprietary information which is protected by copyright. All rights are reserved. No part of this document may be photocopied or otherwise reproduced without consent of AEC. Copyright (c) 2014 by AEC Published in a limited copyright sense, and all rights, including trade secrets, are reserved.

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1. Introduction The USM-1 (Universal Substation Meter) Smart Meters are designed to meet the needs of substation and industrial energy consumers. AECL’s IEC-Standard Multi Tariff Digital Energy Meters set a new standard for revenue-grade energy meters. It provides a highly accurate energy and demand metering system with a comprehensive information display on an extended temperature large LCD. It is capable of remote access via a various types of communication ports in meters in addition it can be easily connected to SCADA system. The USM-1 is filed programmable to support 3P3W and 3P4W with programmable CT and VT ratio. Notes:

All default values are configured based on customer request.

For 3P3W meters phase-Y is considered as reference instead of neutral

1.1 Meter Front Display

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1.2 Meter Rear connection

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2. Product Description

2.1 Meter Features

kWh, kvarh and kVAh digital metering in import and export directions

Separate registers for import and export

Filed configurable for 3P4W and 3P3W system.

Meets international standard IEC62052-11, IEC62053-22 and IEC62053-23.

Class 0.2S accuracy for kWh. Class 2 for kvarh per IEC62053-23

-10 to +60ºC operational temperature

Wide range three phase power supply built in up to 318V L-N or 550V L-L.

Extended Temperature LCD display, with programmable number of digits for displaying the reading.

Pulse LED for accuracy testing (Imp/kWh and Imp/kvarh)

SO and EOI electrical output pulse per IEC62053-31.

Totalizer functionality for extra two Meters.

Internal Real Time Clock with battery backup. Per IEC62054-21 (2004-05).

IRIG-B modulated and un-modulated port for GPS time synchronization.

NTP time synchronization

Transformer and Line losses compensation

Storing reading in EEPROM that does not require any battery backup with minimum data retention of 20 years

Measure and display the following: kWh, kvarh, kVAh in all tariffs, import and export directions. PF for total system power factor and per phase, Voltage per phase, Current per phase, Total three-phase active power. Total three-phase reactive power, Total three-phase apparent power, Line frequency, Demand kW, kvar and kVA total import and export directions Maximum Demand kW, kvar and kVA import and export directions (Basic &TOU)

Configurable to select block method or sliding window method for demand calculation 8 Multiple Tariffs registers for kWh, kvarh and kVAh (Time of Use) import and export

directions o Up to 8 TOU o Up to 620 Special days.

20 days regular (repeated every year e.g. national day) 600 irregular days for 30 years (each year 20 days)

o Up to 10 seasons o Up to 10 weeks o Up to 31 days o Each day up to 10 Scripts

Simple Meter installation at site, with date and time stamp recording:

o Catch reverse run caused by cable swapping. o Catch phase and neutral swapping. o Catch unconnected phases. o Catch Phase sequence revisal

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Event detection with date and time stamp: Over Current/Under Voltage limit violation Detect low total system power factor Auto demand reset. Manual demand reset. Meter Configuration. Battery failure Clock Initialization Memory Error Meter Initialization Time change (Before/After) Demand Reset Manual Demand Reset Auto-Reset Meter Configuration Change Communication Port log Output Relay Control

Support Demand integration periods of 5, 15, 30 and 60 minutes

Store the maximum demand for the below registers: 1. Max Demand kW Import 2. Max Demand kW Export 3. Max Demand kvar Import 4. Max Demand kvar Export 5. Max Demand kvar QI 6. Max Demand kvar QII 7. Max Demand kvar QIII 8. Max Demand kvar QIV 9. Max Demand kVA Import 10. Max Demand kVA Export

Load Profile storage for 4320 points (enough for 90 days at 30 minutes interval)

Load Profile storage for (9 channels) + (Temperature, Status, Date/Time stamp)

The 9 channels are selected from the below channel options: 1. Demand kW Import 2. Demand kW Export 3. Demand kvar Import 4. Demand kvar Export 5. Demand kvar QI 6. Demand kvar QII 7. Demand kvar QIII 8. Demand kvar QIV 9. Demand kVA Import 10. Demand kVA Export 11. Average PF 12. Voltage Phase 1 13. Voltage Phase 2 14. Voltage Phase 3 15. Current Phase 1

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16. Current Phase 2 17. Current Phase 3 18. Power Factor Phase 1 19. Power Factor Phase 2 20. Power Factor Phase 3 21. Frequency

Support 12 programmable EOB (End Of Billing).

Daily Energy profile provide reading for the last previous 4 days

Communication Features Optical Communication port complies with IEC62056-21 Mode E, 9600bps. RS485, 9600bps. Ethernet port.

Communication Protocols DLMS Modbus RTU

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2.2 Electrical Specifications

Meter Type 1.5(6)

Accuracy Class kWh kVARh kVAh

0.2s 2 1

Standard

IEC62052-11, IEC62053-22, IEC62053-23

Connection 3 Ph 4 Wire, 3 Ph 3 Wire

Operating Frequency 60Hz

Input Voltage Range for measurements (L-to-N)

Nominal, VAC

3P4W: 3x57.7/100, 3x63.5/110, 3x66.4/115, 3x69.3/120

& 3x127/220, 3x133/230, 3x220/380, 3x 230/400, 3x 277/480 3P3W: 3x100, 3x110, 3x115, 3x120

Maximum Power Supply Operating Voltages L-N VAC L-L VAC

318 VAC 550 VAC

Auxiliary Power supply Nominal input voltage range input power

120 VDC/AC (100 – 300) VDC, (90 – 264)VAC 4.4W @ 100VDC, 5.5W & 300VDC

Current and Voltage Connection CT, CT-VT

Reference Current, (In) (Amps) 1

Maximum Current, (Imax) (Amps) 6 (120% overload capability for 5A CT)

Short Circuit Current, (Amps)

120A for 500mS

Minimum Current, (Amps) (0.01 In) A

0.01A

Starting Current, (Amps) (0.001 In) A

0.001A

Power consumption in voltage circuit per phase with Meter powered from VT:

At 3x133/230 At 3x230/400 At 3x277/480

Power consumption in voltage circuit per phase with Meter powered from Auxiliary:

At 3x133/230 At 3x230/400 At 3x277/480

0.5 W, 0.65 VA 0.6 W, 1.0 VA 0.65 W, 1.2 VA 0.05 VA 0.11 VA 0.15 VA

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Power consumption in Current circuit per phase

At 1.5 A At 6 A

0.06 VA 0.4VA

Output Pulse Ratio imp / kWh imp / kVARh

10000 10000

Output Pulse LED Color Peak emission wavelength Spectral Line Half-width

Red 635nm 40nm

No. of Measuring Element: 3Phase 4Wire

Energy Voltage Current

3Phase 3Wire Energy Voltage Current

3 3 3 + Neutral 2 2 2

Measurement accuracy Parameter Accuracy

Voltage ± 2 %

Current ± 2 %

kW ± 0.2 %

kVAR ± 2 %

kVA ± 1 %

kWh ± 0.2 %

kVARh ± 2 %

kVAh ± 1 %

Power Factor ± 2 %

Frequency ± 0.1 Hz

kW demand ± 0.5 %

kVAR demand ± 2 %

kVA demand ± 2 %

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2.3 Electromagnetic Compatibility Specifications

Electrostatic discharge Per IEC61000-4-2

Test severity level 4.

Contact Discharge: Test Voltage 8kV.

Air Discharge: Test voltage 15kV.

Electromagnetic HF field Per IEC61000-4-3

Test severity level 3.

Frequency band 80MHz to 2000MHz.

Test field strength 10V/m. with current

Test field strength 30V/m. without current

Fast transient burst Per IEC61000-4-4 (5/50nS waveform)

Test severity level 4.

Test voltage at current and voltage circuit: 4kV.

Test duration 60 seconds.

Conducted EMC Per CISPR 22 class B

Frequency band 150kHz to 30MHz.

Radiated EMC Per CISPR 22 class B

Frequency band 30MHz to 1000MHz.

Surge immunity Test Per IEC61000-4-5 (1.2/50us)

Test severity level 4.

Test Voltage 4kV.

Damped Oscillatory wave immunity Per IEC61000-4-12

Test Voltage

Common mode, 2.5kV

Differential mode, 1kV

Test frequency

100kHz, repetition rate, 40Hz

1MHz, repetition rate, 400Hz

Immunity to conducted disturbances

Frequency band 150kHz to 80MHz.

Per IEC61000-4-6

Power Frequency withstand voltage

2kV

2.4 Electrical Compatibility Specifications

Static meters for active energy (classes 0,2 S and 0,5 S)

Per IEC62053-22

Static meters for reactive energy (classes 2 and 3)

Per IEC62053-23

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2.5 Communication Interface

OPTICAL Port

Optical Link Infrared, 860nm - 950nm

Optical Port Per IEC62056-21

Max. Baud rate Half duplex 9600 bps to 19200 bps

RS485 Half duplex 9600 bps

Ethernet Full duplex 100 Base T

2.6 Backed up Battery for the RTC

Back up type Lithium Battery

Life Meter operates in normal conditions: 10 years.

With AC power off: 3 year.

2.7 Back up for readings and Data

Back up type EEPROM

Life With AC power off: 20 years.

2.8 Digital Input Ports

2.8.1 General purpose

Quantity 4

Isolation Voltage 2500Vrms

Input voltage VIH: 100 to 300 VDC VIL: -0.5 to 40 VDC

Input current @ VIH= 300VDC 5.5 mA

Pulse input (Mark or Space) Min: 400ms.

2.8.2 SO Input Ports (Totalizer Input)

Quantity 2

Isolation Voltage 2500VAC

Input voltage VIH: 100 to 300 VDC VIL: -0.5 to 40 VDC

Input current @ VIH= 300VDC 5.5 mA

Pulse input (Mark or Space) Min: 30ms.

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2.9 Digital Output ports

2.9.1 Alarm Ports

Count 4

Type Optically Isolated MOSFET

Contact Normally Open (NO)

Rated Voltage 250 VAC/ 250VDC

Continuous rated current 0.2A

Max. Operating Voltage 250VAC/ 250VDC

Turn On/Off time < 10 ms

Off-State Leakage Current 1uA @ 250VDC

Isolation voltage Input to Output 2500 Vrms

2.9.2 SO output Ports

Count 5

Type Optically Isolated MOSFET

Contact Normally Open (NO)

Rated Voltage 300 VAC/ 300VDC

Continuous rated current 0.04A

Max. Operating Voltage 300 VAC/ 300VDC

Turn On/Off time < 10 ms

Off-State Leakage Current 1uA @ 250VDC

Isolation voltage Input to Output 2500 Vrms

2.10 Mechanical Specifications

Terminal insulation (Dielectric test) 2kV, 1 minute, 60Hz.

Impulse Voltage Withstand 6KV (1.2/50uS impulse) 62053-11

Terminal heat resist Per IEC62052-11, IEC60095-2-11

Dust & water Per IEC62052-11, IEC529; Front: IP51 Rear: IP20

Solar Radiation Per IEC 62052-11, IEC 60068-2-5, procedure A, 55C, 3 days

Vibration 10-150Hz @ 1g, 75 min.

Per IEC 62052-11, IEC60068-2-6

Shock Half sine @ 30g impulse for 18ms

Per IEC 62052-11, IEC68-2-27

Weight 1.6 kg.

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Overall Dimensions (mm) 144X144X184 (WxHxD)

LCD Viewing area Dimensions (mm) 73 x 31.5

LCD main digit size Dimensions (mm) 9.0x4.5

Case Material Self-extinguishing PPO

Spring hammer IEC 62052-11, IEC 60068-2-75. Apply kinetic energy of 0.2J

2.11 Climatic Specifications

Dry heat Per IEC 62052-11, IEC 60068-2-2

Cold Per IEC 62052-11, IEC 60068-2-1

Damp heat cyclic Per IEC 62052-11, IEC 60068-2-30 for outdoor meter

2.12 Environmental Specifications

Operating Temperature -10 to +60 degree C

Storage Temperature -20 to +70 degree C

Humidity 95 % non-condensing

2.13 IRIG-B Port

Type IRIG-B 120 modulated input signal

And IRIG-B 000 un-modulated input signal

Nominal input voltage 5Vpk

Maximum input voltage 10Vpk

Input impedance minimum 10k ohm

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2.14 Dimension and appearance

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4. Electrical connection

USM-1

Figure 4.2: 3 phase 4 wire CT/VT through connection diagram. CT on neutral line not mandatory for energy measurement

Ii Io

I1

Ii Io

I2

Ii Io

I3

Ii Io

In

N C B A

Current Measurement Input Voltage Measurement Input

+ -

Auxiliary Supply

L/+

N/-

USM-1

Figure 4.1: 3 phase 4 wire CT through connection diagram. CT on neutral line not mandatory for energy measurement

Ii Io

I1

Ii Io

I2

Ii Io

I3

Ii Io

In

N C B A

Current Measurement Input Voltage Measurement Input

+ -

Auxiliary Supply

L/+

N/-

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5. Ordering Information Available models as follows:

Mode l P/ N De s c ript ion

USM-1 900-004775 Digital Energy Meter, Class 0.2, CT and CT/VT through 3P4W, 3P3W, 1(6)A 3x57.7/100 VAC ~ 3x 277/480 VAC, 60Hz. Optical, Ethernet and RS485 ports. DLMS & Modbus RTU protocols. SO pulse outputs. Totalizer. I/P and O/P ports

USM-1

Figure 4.3: 3 phase 3 wire CT/VT through connection diagram.

Ii Io

I1

Ii Io

I2

Ii Io

I3

Ii Io

In

N C B A

Current Measurement Input Voltage Measurement

Input

+ -

Auxiliary Supply

L/+

N/-