Split Core Current Transformers installation requirements

1. Construct according to the drawing, the wiring is correct, the numbering labels at both ends of the wire should be clear, and the label range should meet the specified requirements.

2. The current and voltage circuits should be grounded at the outlet on the secondary side of the transformer. The voltage circuit should be protected by a fuse.

4. There should be no joints in the secondary circuit wires in the screen cabinet, and no joints in the middle of the control cables or wires. If there is a connector, it should be connected through its long junction box.

5. Split Core Current Transformers The secondary circuit should be well insulated to the ground, and there should be no mixed lines between the voltage circuit and the current circuit.

6. The arrangement of the secondary circuit wires should be neat and beautiful, the wires and electrical components and the connection screws of the junction box should be free from looseness, and the distance between the wire binding points should meet the specified requirements.

7. The period cannot be reversed, and the phase sequence and phase difference should meet the requirements of design and regulations. For the transformer wiring of differential protection, the phasor diagram of the two arms needs to be measured before putting it into operation to verify the correctness of the wiring.

8. The secondary loop wire or cable should use copper wire. The cross section of the Split Core Current Transformers return line shall not be less than 2.5mm2, and the cross section of the voltage transformer return line shall not be less than 1.5mm. Short-circuit and ground at the terminal block.