The Megger MRCT Relay and Current Transformer Test Set is a light weight, robust, portable unit used to perform demagnetization, ratio, saturation, winding resistance, polarity, phase deviation, and insulation tests on current transformers. The MRCT automatically calculates ratio errors, saturation curves, and knee points. The MRCT provides a microprocessor-controlled variable voltage and current output and precision instrumentation for automatically testing single and multi ratio CTs, reducing testing time and increasing productivity. The MRCT will directly connect to multi ratio CTs and perform all tests – saturation, ratio and polarity, winding resistance and insulation – on all taps with the push of a button and without changing leads.
The MRCT can be controlled via Megger’s Smart Touch View Interface (STVI) controller. The STVI controller is a full color, high resolution, LCD touch screen which allows the user to perform manual and automatic testing quickly and easily using the manual test screen, as well as using pre-constructed test routines. The large color display permits the user to easily read all pertinent data while the test is being performed and provides the ability to view the current transformer’s saturation curve. The unit can also be configured to come without a Megger STVI and can be controlled via a laptop with Megger’s PowerDB software.
Current transformers can be tested in their equipment configuration, such as being mounted in transformers, oil circuit breakers or switchgear. It is necessary for the equipment to be completely isolated from the electrical system prior to testing.
Megger MRCT Features
- Industry leading test duration using patented simultaneous multi-tap measurements reduces testing time by 20% on multi-tap CTs
- Increased measurement accuracy to support metering class CT testing
- Smallest and lightest 2 kV secondary voltage injection unit on the market
- Integrated single phase relay test system
- General purpose substation secondary circuit testing with 300 V & 60 A generators
- Grouped testing: demagnetization, knee points, ratios, saturation curves, and more
- Measure all ratios and saturation curves on multi-tap CTs with one lead connection
- Built-in insulation resistance testing