MRCT Relay and Current Transformer Test Set
The MVCT VT and CT test set is a lightweight, portable, and robust unit capable of accurately testing both current and voltage transformers. It weighs less than 20 lb (10Kg) and is capable of performing saturation, ratio, polarity, winding resistance, and insulation tests on current transformers, and can also be used for testing metering and protection class voltage/potential transformers.
The MVCT provides a microprocessor-controlled variable voltage and current output along with precision instrumentation for automatically testing single and multi-ratio CTs and VTs. When it comes to CTs, this instrument makes testing easy. It will directly connect to multi-ratio CTs and perform all tests – saturation, ratio, polarity, winding resistance, and insulation – on all taps at the push of a button and without changing leads. This greatly reduces testing time.
The MVCT can be operated via its large, full colour, high resolution, daylight-readable TFT LCD touch screen display. This interface allows you to perform manual and automatic testing quickly and easily, and you can use the pre-constructed test routines to make testing even easier. The large colour display also enables you to easily read all pertinent data while the test is being performed and gives you the ability to view the results when the test is complete. The unit can also be configured to come without a display and thus be controlled via a laptop using Megger's PowerDB software or with Megger’s existing Smart Touch View Interface™(STVI).
Input
100 to 265 V, 50 or 60 Hz, 10 A max.
Outputs
Output Voltage: 0 to 300 V AC 0 to 300 V DC
Output Current: 0 to 1 A eff
Output Power: 300 VA
Inputs
Ranges: 0 to 2/10/50/300 V
Resolution: 0.0001 V
Accuracy:
±0.02% of reading and ± 0.02% range typical
±0.05% of reading and ±0.05% range maximum
Range: 0 to 1.0 A
Resolution: 0.0001 A
Accuracy:
±0.08% of reading ±.08% range typical
±0.2% of reading ±0.2% range maximum
CT TESTING
Ratio:
Standard option 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.
Phase angle:
3 digits
Range: 0 to 360 degrees
Resolution: 1 min
Accuracy: ± 3 min typical ±6 maximum
Winding resistance test
Measuring range: 0-30Ω
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
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
USB
