Installation requirements for Split Core Current Transformers

1. According to the engineering drawings, the wiring is appropriate, the line number identification on both sides should be clear, and the identification category meets the requirements.

2. The current and working voltage power circuit should be grounded at the entrance and exit of the secondary side of the transformer. The working voltage power supply circuit should be maintained with a circuit breaker.

3. The secondary circuit line of the control panel cabinet should have no radio frequency connector, and there should be no radio frequency connector in the middle of the frequency conversion cable or line. If there is a radio frequency connector, it should be connected according to its long wiring terminal.

4. The secondary circuit of the split-combination voltage transformer has an excellent insulation layer, and the working voltage control circuit and the current flow control circuit should not be mixed.

5. The wiring of the secondary circuit should be arranged neatly and beautifully, and the connecting screws between the wiring and the electrical components and the terminal should not be loose. The spacing between the wiring binding points should meet the requirements.

6. The cycle time cannot be reversed, and the zero line fire line and phase angle should conform to the design plan and requirements. For the wiring of the transformer with differential protection, the phasor diagram of both arms must be accurately measured before the capital is put into operation to check the accuracy of the wiring.

7. Copper core wire should be used for the secondary circuit cable or cable. The cross section of the transformer control loop shall not be less than 1.5 mm. The entrance and exit terminal should use unique current terminal. The secondary winding that is not used in the transformer should be short-circuited and grounded on the plug-in board.