AC Electrical Current Transformer Line Inspection Method
Jan 13, 2022| 1. In order to check whether the secondary side of the AC Electrical Current Transformer is disconnected or short-circuited, disconnect the wires connected to the A-phase voltage terminal and the C-phase voltage terminal of the electric energy meter successively. The disc should appear to rotate.
2. How to confirm whether the voltage transformer is reversely connected? We can distinguish the current status by connecting the ammeter to the secondary side of the Electrical Current Transformer successively. Assuming a star connection, the current in the middle phase is 2 times the current in the other phases.
3. To distinguish whether the Electrical Current Transformer has a good grounding device, an ammeter can be used for accurate detection. In the testing process, one side of the ammeter needs to be connected to the terminal of the voltage transformer that is not connected to the grounding device, and the other is connected to the electrical current transformer's re-wire.
4. The AC Electrical Current Transformer wants to verify whether the ground device is suitable, and can also use the current to verify.