Data sheet

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RTU500 series

500CVD21 Data sheet

Application The Multimeter 500CVD21 is used for measuring analog AC input signals from three independent phases with optional inputs for neutral current and voltage. The module can measure currents from 6 or 8 feeders (3 phase systems) depending on the current input configuration. For each phase voltage and current are measured directly and a number of calculated values are generated by the module. In addition the module detects the fault current and the over current direction. The module supports configurations with 2, 3 or 4 voltage transformers. There are several versions available: Versions

Type

LO

HI

500CVD21 R0121

4U24I

x

500CVD21 R0125

4U24I

x

500CVD21 R0141

4U24I

x

500CVD21 R0145

4U24I

x

1A

5A

x x x x

Figure 1: 500CVD21 Application

Characteristics The Multimeter is a microprocessor-based Intelligent Electronic Device (IED) intended for current, voltage, power and energy measurement. In addition fault current detection and over current direction are available. Current and voltage inputs are connected via transformer only (see Wiring). The module has a measurement interface supporting voltage measurement for one 3 phase system with 2, 3 or 4 voltage transformers. The device has 24 current inputs supporting measurement configurations for 6 or 8 three phase systems (feeders). Calculated values are scaled by user programmed constants for current and voltage transformers. All values are updated after 320 ms. The fault current is measured up to 20 times nominal current. The current inputs withstand 50 times nominal current for 1 s. The first binary output of the multimeter can be used for indicating an overall trip and pickup event.

Wiring

Figure 2: Voltage input with 2 voltage transformers (3P3W3U)

Figure 3: Voltage input with 3 voltage transformers (3P4W3U)

Figure 6: Current inputs with 3 CT per feeder, 3I (Ia, Ib, Ic)

Figure 4: Voltage input with 4 voltage transformers (3P4W4U)

Figure 7: Current inputs with 4 CT per feeder, 4I (Ia, Ib, Ic, I0)

Figure 5: Current inputs with 2 CT per feeder, 2I (Ia, Ic)

Figure 8: Current inputs with 3 CT per feeder, 3I (Ia, I0, Ic)

Meter Operation The following measured or calculated values are available from the module.

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Instantaneous Meter Values

Voltage / Current Distortion (THD)

Following values are measured by true RMS conversion

The 500CVD21 provides a measure of the total harmonic distortion (THD), in each phase voltage and current waveform, as a percentage deviation from pure 50Hz or 60Hz sine waves. THD is calculated by Fast Fourier Transform algorithm (FFT).

Measurement

Measuring Path

Neutral voltage

Phase 1-N, 2-N, 3-N Voltage N, Voltage line unbalance

– U1, U2, U3, UN

Phase voltage

Phase 1-2, 2-3, 1-3

– I1, I2, I3, IN

Current

Phase 1, 2, 3, N, 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)

Phase 1, 2, 3, total

Phase angle

Phase 1, 2, 3, total

Frequency

System

Phase rotation

Positive/ negative sequence

The Multimeter supports 4 quadrant power values.

Fault current detection The devices are with three phases and one neutral for over current detection. The programming of the time current characteristics is identical in all application to require establishing the control variables: trip time delayed curve, curve multiplier, pickup current and reset timing. The curve reference follows ANSI, IEEE, IEC standards (ANSI C37.90, IEEE C37.112-1996, IEC 255-4, BF412).

Directional overcurrent Detection Directional overcurrent detection is for the protection of multiple source feeders to distinguish between faults in different directions. The device incorporates for three phase and neutral overcurrent detection with a secure 90° as quadrant coordination in phase directional polarization. Thus, a selected polarizing voltage should have a function to keep reasonable constant, no matter what operating status in a non-faulted or faulted system. Phase directional overcurrent Phase directional detection, it requires operating current to determine whether current flow in each phase is in forward or reverse direction, as determined by the connection of the phase source, selected MTA angle, voltage and current phasors.

Figure 9: Power measurement convention

Energy values Integrated total (intermediate and end of period readings) are calculated for: – – – –

active energy negative active energy positive reactive energy capacitive reactive energy inductive

500CVD21 - 1KGT 150 912 V000 1 | 3

Figure 10: Phases directional overcurrent polarization

Neutral directional detection The neutral directional detection features control as phase element to discriminate faults between forward or reverse. This detection is also to select operation current (Io) to polarizing voltage (Vo) for the directional control factors.

Figure 11: Neutral directional voltage polarization

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Technical data

Stability

In addition to the RTU500 series general technical data, the following applies: Input channels

Stability

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

Power supply input

Voltage

Measurement range: 0 ... 300 V AC

U1, U2, U3, UN

phase to neutral Input impedance: > 1 MΩ

Current

Current input channels: 24

I1, I2, I3, IN

Measurement range: –

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

Power supply voltage R012x (LO)

20... 60 VDC

Power supply voltage R014x (HI)

80… 260 V AC 80… 330 V DC

Power consumption

10 VA AC 5 W DC

Serial Ports Modbus RTU protocol

RS485 Distance: < 1.2 km

Overload withstand: –

3 x IN continuous

Diagnostic Port

RS232



25 x IN 2 sec

Baud Rate

Always configure 19.2 kbps



50 x IN 1 sec

Load

Up to 32 units loads

Frequency

45... 65 Hz

Samples

36 samples per cycle

Mechanical Layout

Harmonics

Up to 17th harmonic for 50/60 Hz

Dimensions

Data update interval

320 ms

250 mm x 160 mm x 65 (Width x Hight x Depth)

Housing type

Metal housing

Mounting

DIN rail mounting EN 50022 TS35: 35 mm x 15 mm or 35 mm x 7.5 mm

Binary outputs Supported binary output channels

1

Output technology

MOSFET

Switching voltage

200 V DC or AC

Maximum load

< 50 mA

Insulation tests Dielectric Strength IEC 60255-5

Accuracy Phase current I

0.2 %

Neutral current I

0.2 %

Phase current I, fault current

2%

Phase voltage U

0.2%

Phase to phase voltage U

0.2%

Active power (Watt)

0.5 %

Apparent power (VA)

0.5 %

Reactive power (Var)

0.5 %

Power factor (PF)

0.5 %

Frequency

0.05 %

AD converting

16 bit

2 kV AC rms, 1 minute

Immunity test IEC 61000-4-2

class III

IEC 61000-4-3

class III

Fast Transient / Burst IEC 61000-4-4

class III

Surge Immunity Test IEC 61000-4-5

class III

IEC 61000-4-12

class III

Environmental conditions Nominal operating temperature range:

-25 ... +70 °C

Start up:

-40 °C

Max. operating temperature, max.

+85 °C

96h: EN 60068-2-1, -2-2, -2-14 Relative humidity

5 ... 95 %

EN 60068-2-30

(non condensing)

Ordering information 500CVD21 R0121

1KGT030300R0121

500CVD21 - 1KGT 150 912 V000 1 | 5

Ordering information 500CVD21 R0125

1KGT030300R0125

500CVD21 R0141

1KGT030300R0141

500CVD21 R0145

1KGT030300R0145

Additional material Configuration kit for 560CVDxxx (Tool CD, cable) 560KCA01 R0001

6 | 1KGT 150 912 V000 1 - 500CVD21

1KGT030800R0001

ABB AG Power Systems Division P.O. Box 10 03 51 68128 Mannheim, Germany

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www.abb.com/substationautomation

serve the right at any time to make technical changes or modify the contents of this document without prior notice. The user shall be solely responsible for the use of any application example or information described within this document. The described examples and solutions are examples only and do not represent any comprehensive or complete solution. The user shall determine at its sole discretion, or as the case may be, customize, program or add value to the ABB products including software by creating solutions for the end customer and to assess whether and to what extent the products are suitable and need to be adjusted or customized. This product is designed to be connected to and to communicate information and data via a network interface. It is the users sole responsibility to provide and continuously ensure a secure connection between the product and users or end customers network or any other network (as the case may be). The user shall establish and maintain any appropriate measures (such as but not limited to the installation of firewalls, application of authentication measures, encryption of data, installation of anti-virus programs, etc) to protect the product, the network, its system and the interface against any kind of security breaches, unauthorized access, interference, intrusion, leakage and/or theft of data or information. ABB AG is not liable for any damages and/or losses related to such security breaches, any unauthorized access, interference, intrusion, leakage and/or theft of data or information. ABB AG shall be under no warranty whatsoever whether express or implied and assumes no responsibility for the information contained in this document or for any errors that may appear in this document. ABB AG's liability under or in connection with this Brochure or the files included within the Brochure, irrespective of the legal ground towards any person or entity, to which the Brochure has been made available, in view of any damages including costs or losses shall be excluded. In particular ABB AG shall in no event be liable for any indirect, consequential or special damages, such as – but not limited to – loss of profit, loss of production, loss of revenue, loss of data, loss of use, loss of earnings, cost of capital or cost connected with an interruption of business or operation, third party claims. The exclusion of liability shall not apply in the case of intention or gross negligence. The present declaration shall be governed by and construed in accordance with the laws of Switzerland under exclusion of its conflict of laws rules and of the Vienna Convention on the International Sale of Goods (CISG). ABB AG reserves all rights in particular copyrights and other intellectual property rights. Any reproduction, disclosure to third parties or utilization of its contents in whole or in part - is not permitted without the prior written consent of ABB AG. © Copyright ABB 2014 All rights reserved

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