During commissioning or a field test the according to IEC and national standards, the turns ratio or voltage ratio should be tested for a power transformer.
The traditional bridge method is complicated, and can’t read the data directly, and you have to perform a conversion calculation and the testing results are data of one phase only. This unit overcomes the shortcomings of traditional bridge method.
The unit has a large LCD display and it performs the three-phase voltage ratio test fast and precise.
The power supply eliminates the effects of harmonics from the mains voltage during testing
Three-phase output voltage is used to speed up testing.
The angle between phases can be measured, and the vector group 0-11 can be automatically identified.
For low-voltage rectifier transformers with multiple windings, the low-voltage side does not need to be disconnected to measure the transformation ratio and 7.5° Angle deviation.
The unit is suitable for a wide variety of transformers, especially suitable for the measurement of Z-type transformers, rectifier transformers, grounding transformers, electric furnace transformers, phase shifting transformers, balance transformers, etc.
It has high and low voltage polarity protection, transformer turn short circuit protection, tap switch failure protection, output full short circuit protection, and increased instrument stability.
After inputting the rated test parameters, it can automatically measure the transformer ratio value, error value and on-load tapchanger position.
The plastic case of the unit is sealed, waterproof, anti-shock is ideal for field testing
