Remote Terminal Units - Data sheet

Multimeter 500CVD90RTU500 series

• CT/VT interface with 4 voltage and 4 currentinputs for direct monitoring of 3/4 wire 10…300 V AC

• 1A / 5A signals• Serial interface to RTU560 (RS-485)• Fault current detection (FCD), directional

information, 20x In• LO power supply: 20...60 V DC• HI power supply: 80...260 V AC, 80...330 V DC

ApplicationThe Multimeter 500CVD90 is used for measuringanalog AC input signals from three independentphases with optional inputs for neutral currentand voltage. For each phase voltage and currentare measured directly and a number of calculatedvalues are generated by the module. In addition themodule detects the fault current and the over currentdirection. The module supports configurations with2, 3 or 4 voltage transformers.The module supportsconfigurations with 2, 3 or 4 voltage transformers.

There are several versions available:

Versions Type LO HI 1 A 5 A

500CVD90 R0021 4U4I x x

500CVD90 R0025 4U4I x x

500CVD90 R0041 4U4I x x

500CVD90 R0045 4U4I x x

CharacteristicsThe Multimeter is a microprocessor-based IntelligentElectronic Device (IED) intended for current, voltage,power and energy measurement. In addition faultcurrent detection, over current detection, over voltage

detection, under voltage detection, over frequencydetection, under frequency detection, unbalancedzero voltage detection, unbalanced negative voltagedetection, voltage sag alarm, negative sequence overvoltage detection and broken conductor detection areavailable.

Futhermore, functions for power quality analysisaccording IEC 61000-4-30 like harmonic analysis andSAG detector are integrated.

Current and voltage inputs are connected viatransformer only. The module has a measurementinterface supporting voltage measurement for one3 phase system with 2, 3 or 4 voltage transformers.It has 4 current inputs supporting measurementconfigurations for three phase systems.

Calculated values are scaled by user programmedconstants for current and voltage transformers. Allvalues are updated after 200 ms.

The fault current is measured up to 20 times nominalcurrent. The current inputs withstand 50 timesnominal current for 1 s and 100 times nominal currentfor 0.5 s.

The multimeter is equipped with two binary outputsand additional status LEDs. These can be used toindicate the above mentioned detection functions.

Meter OperationThe following measured or calculated values areavailable from the module.

Instantaneous Meter Values

Following values are measured by true RMS conversion

Measurement Measuring Path

Phase to Neutral voltage Phase 1-N, 2-N, 3-NVoltage N, Voltage lineunbalance

Phase to Phase voltage Phase 1-2, 2-3, 1-3

Current Phase 1, 2, 3N, Current unbalance

Fault current Phase 1, 2, 3, N

Active power (Watt) Phase 1, 2, 3, total

Reactive power (Var) Phase 1, 2, 3, total

Apparent power (VA) Phase 1, 2, 3, total

Power factor (PF)

PF = |cos phi| + high bitset for leading load (highbit 0 for lagging load)

Phase 1, 2, 3, total

Phase angle Phase 1, 2, 3, total

Frequency System

Phase rotation Positive/ negativesequence

The Multimeter supports 4 quadrant power values.

Figure 1: Power measurement convention

Energy values

Integrated total (intermediate and end of periodreadings) are calculated for:• active energy negative• active energy positive• reactive energy capacitive• reactive energy inductive

Voltage / Current Distortion (THD)

The 500CVD90 provides a measure of the totalharmonic distortion (THD), in each phase voltage andcurrent waveform, as a percentage deviation from pure50Hz or 60Hz sine waves.

THD is calculated by Fast Fourier Transform algorithm(FFT) for:• U1, U2, U3, UN• I1, I2, I3, IN

Disturbance RecorderThe device provides a function which records eventsand waveforms before, during and after a disturbance.

• Triggered by phase overcurrent (pickup/trip), overcurrent (pickup/trip), over voltage, under voltage,over frequency, under frequency, unbalanced zerovoltage, unbalanced negative voltage, voltagesag alarm, negative sequence over voltage andbroken conductor, by rising edge of a binary signal(programable).

• Triggering is also possible via a serialcommunication command.

Fault Current DetectionThe device supports over current detection with threephases and a neutral line. The configuration of thetime current characteristics requires following controlvariables: trip time delay curve, curve multiplier, pickupcurrent and reset timing. The trip curve referencefollows ANSI, IEEE, IEC standards (ANSI C37.90, IEEEC37.112-1996, IEC 255-4, BF412, GE).

Directional overcurrent detectionDirectional overcurrent detection is for the protectionof multiple source feeders to distinguish betweenfaults in different directions. The function is requiredto detect fault locations in networks with multiplefeeders and for ring structures.

The device incorporates for three phase and neutralovercurrent detection with a secure 90° as quadrantcoordination in phase directional polarization. Thus, aselected polarizing voltage should have a function tokeep reasonable constant, no matter what operatingstatus in a non-faulted or faulted system.

Technical dataIn addition to the RTU500 series general technicaldata, the following applies:

Input channels

VoltageU1, U2, U3, UN

Load : < 0.15 VA per phaseat 300 V

Measurement range:10...300 V AC phase toneutral

Input impedance: > 1 M

CurrentI1, I2, I3, IN

Current input channels: 4

Measurement range:

• 0.01...1.2 CT• 5 A version: max. 6 A• 1 A version: max. 1.2 A• Fault current inputs: 20

x In

Load: < 0.1 VA per phase

Overload withstand:

• 3 x In continuous

• 25 x In 2 sec

• 50 x In 1 sec

• 100 x In 0.5 sec

Frequency 45... 65 Hz

Samples 64 samples per cycle

Harmonics Up to 31th harmonic for50/60 Hz

Data update interval 200 ms100 ms (fast voltage)

Detections functions

Phase Overcurrent ANSI 50/51

Neutral Overcurrent ANSI 50N/51N

Directional phaseovercurrent

ANSI 67

Directional neutralovercurrent

ANSI 67N

Undervoltage ANSI 27

Overvoltage ANSI 59

Overfrequency ANSI 81O

Underfrequency ANSI 81U

Sensitive Earth Fault ANSI 50SEF

Broken conductor ANSI 46BC, 46PD

Phase sequence voltage ANSI 47, 47BC

Negative sequenceovercurrent

ANSI 46

Voltage unbalance ANSI 60

Disturbance Recorder

Record length 4 seconds, pre-disturbance recordlength programmable (0-4second)

Record values U1, U2, U3, UNI1, I2, I3, IN 15 binary values

Record output COMTRADE IEEE StdC37.111-1999

Binary outputs

Outputs 2

Output technology MOSFET

Switching voltage 60 V DC or AC

Maximum load ≤50 mA

Accuracy

Phase current I 0.2 %

Neutral current I 0.2 %

Fault current ≤±2 %

Phase voltage U 0.2 %

Phase to phase voltage U 0.2 %

Active power (W) 0.5 %

Apparent power (VA) 0.5 %

Reactive power (Var) 0.5 %

Power factor (PF) 0.5 %

Frequency 0.05 %

AD converting 16 bit

Active energy (WH) 0.5 %

Reactive energy (VarH) 0.5 %

Stability

Stability ≤ 50 ppm/°C (Temperature range: -10to +50°C)

Signaling by LEDs

Run Normal operation/Error/Alarm (programmable)

LED A Forward fault current

LED B Reverse fault current

Rx/Tx Receive/Transmit data onserial port

Serial Ports

Modbus RTU protocol RS485Distance: < 150 m

Baud Rate up to 38.4 kbps default 19.2 kbps

Load Up to 32 units loads

Diagnostic Port RS232

1KG

T151

038

V0

00

1

Power supply

Power supply voltageR002x (LO)

20... 60 V DC

Power supply voltageR004x (HI)

80… 260 V AC80… 330 V DC

Power consumption 12 VA AC5 W DC

Immunity test

Electrostatic dischargeIEC 61000-4-2

8 kV air / 6 kV contact(level 3)

Performance criteria A

Electrical fast transient /BurstIEC 61000-4-4

4 kV (level 4)

Performance criteria A

SurgeIEC 61000-4-5

4 kV line to ground, 2 kVline to line (level 4)

Performance criteria A

Conducted distur-bances, induced by radio-frequency fieldsIEC 61000-4-6

10 V (level 3)

Performance criteria A

Power frequency magneticfieldIEC 61000-4-8

100 A/m (level 5)

Performance criteria A

Environmental conditions - climatic

Nominal operatingtemperature rangeEN 60068-2-1, EN60068-2-2, EN 60068-2-14

-40 °C... 85 °C

Start upEN 60068-2-1

-40 °C

Max. operating temper-ature, max. 96hEN 60068-2-2

+85 °C

Relative humidityEN 60068-2-30

5... 95 % (non condensing)

Insulation tests

AC test voltageIEC 61000-4-16IEC 60870-2-1 (class VW3)

2.5 kV, 50 HzTest duration: 1 min

Impulse voltage withstandtestIEC 60255-5IEC 60870-2-1 (class VW 3)

5 kV (1.2 / 50 µs)

Insulation resistanceIEC 60255-5

> 100 MΩ at 500 V DC

Emission test

Radiated emmissions -enclosure ports (30 Mhz to1 GHz), CISPR 16-2-3/ EN55016-2-3

EN 55011/ CISPR 11 class B

Radiated emmissions -enclosure ports (1 to 6GHz), CISPR 16-2-3/ EN55016-2-3

EN 55011/ CISPR 11 class B

Enclosure protection

IEC 60529 IP20

Mechanical Layout

Dimensions 140 mm x 160 mm x 67mm (Width x Height xDepth)

Housing type Aluminium

Mounting DIN rail mounting EN50022 TS35: 35 mm x 15mm or 35 mm x 7.5 mm

Wall mounting by attachedbracket

Ordering information

500CVD90 R0021 1KGT039100R0021

500CVD90 R0025 1KGT039100R0025

500CVD90 R0041 1KGT039100R0041

500CVD90 R0045 1KGT039100R0045

Additional material: Configuration kit for 560CVDxx(Tool CD, cable)

560KCA01 R0001 1KGT030800R0001

ABB AG Power Grids P.O. Box 10 03 5168128 Mannheim, GermanyTel. +49 621 381-3000

www.abb.com/remote-terminal-units

We reserve the right to make technicalchanges or modify the contents of thisdocument without prior notice. Withregard to purchase orders, the agreedparticulars shall prevail. ABB AG does notaccept any responsibility whatsoeverfor potential errors or possible lack ofinformation in this document.

We reserve all rights in this document and inthe subject matter and illustrations containedtherein. Any reproduction, disclosure to thirdparties or utilization of its contents – in wholeor in parts – is forbidden without prior writtenconsent of ABB AG. Copyright© 2019 ABB AG All rights reserved