1, Transformer calibrator: measure the error between the standard transformer and the transformer under test, display the working current.

2、Standard current transformer: used as a standard in transformer calibration, the accuracy is generally higher than the measured more than two levels, designed with multiple ratio taps, to adapt to different transformer calibration.

3, Booster: with the regulator, matching the various needs of the test current. Its capacity and cost increase with the increase in current.

4, Load box: simulate the actual working state of the transformer under test.

5, Regulator: used to adjust the test current, generally with the protection and switch, etc. installed in an operating table, divided into coarse and fine adjustment of the two regulators to meet the fineness of adjustment. In the rated current of 2500A below the measurement, you can use 10KVA general regulator combination production, larger currents must be special production, generally need 30 ~ 60KVA.

The basic equipment required to calibrate voltage transformers include.