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Relay Test Sets & Circuit Breaker Analysers
Megger MRCT Relay & Current Transformer Test Set – Completely Configurable
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
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) |
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| 300 to 2000 V at 1.0 A max (5 minutes on, 5 minutes off) |
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| 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 |
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| 1000 to 2000 V ±0.08% of reading and ±.08% range typical ±0.2% of reading and ±0.2% range maximum |
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| 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 |
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| 15 amperes 200 VA (282 peak) 13.4 V rms continuous |
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| 30 amperes 200 VA (282 peak) 6.67 V rms continuous |
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| 75 amperes 300 VA (424 peak) 5.00 V rms 90 cycles |
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| 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 | |
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Additional Information
| SKU | MRCT |
|---|---|
| Manufacturer Part Code | MRCT |
