Megger MRCT Relay & Current Transformer Test Set – Completely Configurable

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MRCT

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Description

Lightweight, portable, and robust the Megger MRCT Relay & Current Transformer Test Set is a configurable meter designed for performing demagnetisation, ratio, saturation, winding resistance, polarity, phase deviation, and insulation resistance readings on current transformers (CTs). It will also automatically calculate ratio errors, saturation curves, and knee points.

To reduce testing time and increase productivity, the Megger MRCT Relay & Current Transformer Test Set provides a microprocessor-controlled variable voltage and current output as well as precision instrumentation enabling automatic testing of single and multi-ratio CTs. Moreover, its industry-leading test duration using patented simultaneous multi-tap measurements reduces testing time by up to 20% on CTs.

Megger MRCT Hardware and Features Overview

Multiple Model Options

Designed to meet the exact requirements of the user, the Megger MRCT Relay & Current Transformer Test Set is completely configurable. It supports options for an integrated VT test system as well as a CT test system. Furthermore, its configurability means it can be upgraded as required to meet future testing needs.

As illustrated in the ordering information above, the Megger MRCT Relay & Current Transformer Test Set can be configured to include a full-colour, high-resolution, LCD touchscreen. Via this interface, you can quickly and easily access manual and automatic tests as well as pre-configured test routines. Additionally, relevant data is indicated on the large, colour display throughout testing and there is an option to view the CT’s saturation curve.

Alternatively, when configured without a display, the Megger MRCT Relay & Current Transformer Test Set can be operated via a laptop with Megger’s PowerDB Software installed. This enables both remote control and computer-controlled automated operation.

CT Testing

Current transformers may be tested in their equipment configuration, for instance, mounted in transformers, oil circuit breakers, or switchgear; however, the equipment must be electrically isolated prior to testing.

The Megger MRCT Relay & Current Transformer Test Set connects directly to multi-ratio CTs and will perform tests on every tap at the push of a button and without lead changes. The Megger MRCT Relay & Current Transformer Test Set delivers accuracy to support the testing of metering and protection class CTs. It offers the following tests:

Saturation (plots up to 10 saturation curves simultaneously and supports testing of knee points up to 30kV)
Ratio, Polarity
Winding Resistance
Demagnetisation (automatically demagnetises CTs after testing)
CT Burden
Insulation Resistance (500V/1000V insulation resistance test system)
Grouped: demagnetisation, knee points, ratios, saturation curves, and winding resistance insulation

Data Storage

Test results are stored and catalogued within the Megger MRCT Relay & Current Transformer Test Set. They can be recalled and viewed on the display (configuration dependent) or uploaded to Megger’s Power DBTM Lite PC Software for report generation and saturation curve plotting.

The Megger MRCT Relay & Current Transformer Test Set is a compact, comprehensive, completely configurable current transformer tester.

Megger MRCT Relay & Current Transformer Test Set Key Features

Lightweight, portable, robust current transformer tester
Tests: demagnetisation, ratio, saturation, winding resistance, polarity, phase deviation, and insulation resistance
Automatically calculates ratio errors, saturation curves, and knee points (up to 30kV)
Microprocessor-controlled variable voltage and current output
Precision instrumentation
Automatic testing of single and multi-ratio CTs
Simultaneous multi-tap measurements reduce testing time by up to 20% on CTs
Completely configurable
Supports options for VT and CT test systems
Future upgradeability
Available with or without a full-colour, high-resolution, LCD touchscreen
CTs may be tested in their equipment configuration
Connects directly to multi-ratio CTs
Performs all tests on every tap at the push of a button and without lead changes
Test results are stored and catalogued in the Megger MRCT
Saved results can be viewed on the display (configuration dependent)
Results can be uploaded to Megger’s DBTM Lite Software for report generation and saturation curve plotting
A compact, comprehensive, completely configurable current transformer tester

Megger MRCT and MVCT: Instrument Transformer Management Software (ITMS) Settings Overview

What’s Included?

Your Choice of Megger MRCT Relay & Current Transformer Test Set
Your Specified Power Cords
Ethernet Cable
Instruction Manual

Tech Specs

Megger MRCT Relay & Current Transformer Test Set Technical Specifications

Input	100 to 132 V or 200 to 264 V, 1ø, 50 or 60 Hz, 15 A max.
Output
Voltage	Continuously variable in three ranges	0 to 30 V at 5.0 A max (15 minutes on, 5 minutes off)
		0 to 300 V at 1.0 A max (15 minutes on, 5 minutes off)
		300 to 2000 V at 1.0 A max (5 minutes on, 5 minutes off)
Current
Output Current	Power Max V/Duty Cycle
30 Amperes	200 VA (282 peak) 6.67 V rms (15 minutes on, 5 minutes off)
60 Amperes	600 VA 90 cycles
Instrumentation
Voltmeters Output	Resolution	0.0000 to 1.9999/19.999/199.99/1999.9
	Ranges	0 to 2/20/200/2000 V
	Accuracy	±0.5% of reading typical ±1.0% of reading typical max
Input Primary Voltage Measurement	Ranges	0 to 0.35/2.0/20.0/200.0/600.0 V
	Resolution	0.0001 to 1.9999/19.999/199.9/600 V
	Accuracy	±0.02% of reading and ±.02% range typical
		±0.05% of reading and ±05% range maximum
Secondary Voltage Measurement	Ranges	0 to 2/20.0/200.0/2000.0 V
	Resolution	0.0000 to 19.999/199.9/1999.9 V
	Accuracy	0 to 999.9 V ±0.02% of reading and ±.02% range typical ±0.05% of reading and ±.05% range maximum
		1000 to 2000 V ±0.08% of reading and ±.08% range typical ±0.2% of reading and ±0.2% range maximum
Ammeter
Output	Ranges	0.0 to 1.0/10.0/60.0 A
	Resolution	.001/.01
Input Excitation curve testing	Range	0.0000 to1.0 A
	Accuracy	±0.08% of reading ±.08% range typical
		±0.2% of reading ±0.2% range maximum
Phase Angle Measurement
3 digits	Range	0 to 360 degrees
	Resolution	1 minute
	Accuracy	±3 minutes typical
		±6 minutes maximum
Ratio Test
Secondary Voltage Injection Method	Range	Accuracy
	0.8 to 2000	±0.02% typical
		±0.05% maximum
	2000 to 5000	±0.03% typical
		±0.1% maximum
	5000 to 20000	±0.05% typical
		±0.2% maximum
Winding Resistance Test
Measuring Range	0 – 30 Ω
Accuracy	(at 20° C) 0.5% ±3 mΩ (typical) / 1% ±10 mΩ (guaranteed) (0 – 30 Ω)
Insulation Test
Test Voltage	1000 VDC, 500 VDC
Measuring Range	20 GΩ, 10 GΩ
Short Circuit Current	1.5 mA nominal
Test Current on Load	1 mA at min. pass values of insulation (as specified in BS7671, HD 384, and IEC 364)
Accuracy	1000 volts ±3% ±2 digits ±0.2% per GΩ
	500 volts ±3% ±2 digits ±0.4% per GΩ
Communication Interfaces	Ethernet
Environment
Humidity	Relative humidity 5%...95% non condensing
Operating	-10º C to 50º C
Storage	-30º C to 70º C
Enclosure	The unit is housed in a rugged enclosure suitable for use in outdoor substations.
Standards	IEC 61010, CSA 22.2, CE
Input Power	100 to 240 V (±10%) AC, 50/60 Hz
Dimensions	14” H X 7.5” W X 12” D (36 H X 19.3 W X 30.5 D cm)
Weight	36.7 lb (16.7 kg)
CE Marking	Low voltage directive	2006/95/EC
	Electromagnetic Compatibility Directive	2004/108/EC
Conformance Standards	Safety	EN 61010-1 2010
		EN 61010-2-030 2010
		EN 61010-031 2002
		EN 61010 +A1
	EMC	EN 61326-1 2006
		EN 61326-2-1 2006
DC Voltage Testing Option Specifications
CT Testing Using DC Voltage	Output Voltage	0 to 300 V DC
	Output Current	0 to 1 A eff
	Output Power	300VA
Relay Option Specifications
Outputs	All outputs are independent of sudden changes in line voltage and frequency. This provides stable outputs not affected by sudden changes in the power source. All outputs are regulated so changes in load impedance do not affect the output.
Output Current	Output power ratings are specified in AC rms values and peak power ratings.
Output Current Power Max V / Duty Cycle	1 ampere 15 VA 15.0 V rms continuous
	4 amperes 200 VA (282 peak) 50.0 V rms continuous
	15 amperes 200 VA (282 peak) 13.4 V rms continuous
	30 amperes 200 VA (282 peak) 6.67 V rms continuous
	75 amperes 300 VA (424 peak) 5.00 V rms 90 cycles
	DC 200 Watts
AC Voltage Output	Output volts power max I
	30 volts 150 VA 5 amps
	150 volts 150 VA (see Power V)
	300 volts 150 VA 0.5 amps
	DC 150 watts
	Duty Cycle: Continuous
Metering	Measured output quantities such as AC amperes, AC Volts, DC volts, or DC amperes, and time may be simultaneously displayed on the large, color TFT LCD, optional STVI touch screen. The AC and DC outputs display the approximate voltage/current output before the initiation of the outputs.
AC Voltage Amplitude	Accuracy	±0.05% reading + 0.02% range typical, ±0.15% reading + 0.05% range maximum
	Resolution	.01
	Measurements	AC RMS
	Ranges	30, 150, 300V
AC Current Amplitude	Accuracy	±0.05% reading + 0.02% range typical
		±0.15% reading + 0.05% range maximum
	Resolution	.001/.01
	Measurements	AC RMS
	Ranges	30, 60A
DC Voltage Amplitude	Accuracy	0.1% range typical, 0.25% range maximum
	Resolution	.01
	Measurements	RMS
	Ranges	30, 150, 300V
DC Current Amplitude	Accuracy	±0.05 % reading + 0.02 % range typical,
		±0.15 % reading + 0.05 % range maximum
	Resolution	.001/.01
	Measurements	RMS
	Ranges	30A
VT & CT Option Specifications
Inductive VT Testing
Outputs	Output Voltage	0 to 300 V AC
	Output Current	0 to 1 A eff
	Output Power	300VA
Ratio Measurement
Voltage ratio	Voltage Level	Accuracy
1 to 350	.6 kV to 35 kV	±0.03% typical ±0.1%maximum
350 to 1100	35 kV to 110 kV	±0.05% typical ±0.2%maximum
1100 to 2450	110 kV to 245 kV	±0.05% typical ±0.5%maximum
Phase Angle Measurement
Voltage ratio	Voltage Level	Accuracy
1 to 350	.6 kV to 35 kV	±3 min typical ±6 min maximum
350 to 1100	35 kV to 110 kV	±3 min typical ±10 min maximum
1100 to 2450	110 kV to 245 kV	±3 min typical ±15 min maximum
Winding resistance measurement	Resolution	1m Ω
	Range	1m Ω to 30 Ω
	Guaranteed Accuracy	(at 20° C) ±0.5% + 10m Ω
Capacitive VT Testing
Outputs	Output Voltage	0 to 2050 V AC
	Output Current	0 to 1 A
	Output Power	2000 VA
Ratio Measurement
Voltage ratio	Voltage Level	Accuracy
300 to 8000	>30 kV to 800 kV	±0.07% typical ±0.15%maximum
Phase Angle Measurement
Voltage ratio	Voltage Level	Accuracy
300 to 8000	>30 kV to 800 kV	±6 min typical ±15 min maximum
Winding resistance measurement	Resolution	1m Ω
	Range	1m Ω to 30 Ω
	Guaranteed Accuracy	(at 20° C) ±0.5% + 10m, Ω