What equipment is required to verify the current transformer

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

2. Standard current transformer: It is used as a standard in transformer verification, and its accuracy is generally more than two levels higher than the measured one. It is designed with multiple ratio taps to adapt to the verification of different transformers.

3. Current booster: Cooperate with the voltage regulator to generate various required test currents. Its capacity and cost increase with the increase of current.

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

5. Voltage regulator: It is used to adjust the test current. It is generally installed in one console with the protection and switch. There are two voltage regulators, coarse adjustment and fine adjustment, to meet the adjustment fineness. When measuring below the rated current of 2500A, it can be made by a combination of 10KVA general-purpose voltage regulators. Larger currents must be specially made, generally 30~60KVA.

6. High-current connection cable: Connect hundreds or thousands of amperes, and the price of the cable cannot be ignored.