Siemens APT current transformer - inspection content of current transformer

Create Date: 2024-8-30 12:03:23|Source: APT/Siemens Shanghai Ergong

1. Regularly check whether the current transformer is overheated, check whether there is discoloration in the terminal, and check whether there are sundries in the terminal box.

2. Check whether there is oil leakage in the oil level gauge in time to ensure that the oil level meets the use standard, and there is no oil leakage, and comprehensively clean the porcelain part to prevent discharge and rupture.

3. Regularly inspect the insulation of the current transformer, check the oil quality of the oil-filled current transformer, and discharge the oil according to the actual situation.

4. When checking the ammeter, the three-phase indication value is comprehensively checked to prevent overload operation and ensure that it is within the specified range.

5. Carefully check the goodness of the grounding wire on the secondary side to ensure that there is no fracture, fix the loose part, and the secondary side of the current transformer in operation shall not be opened.

6. Check the output current, if there is a large current, check whether there are alarm signals such as broken wire and differential current crossing the line.

7. Check the reliability of the grounding of the current transformer.

8. Ensure that the operating temperature of the current transformer is below 50°C.

9. If the insulation breakdown phenomenon of the current transformer is caused by factors such as overvoltage or moisture, it is necessary to repair the damaged current transformer as it is.

10. After the current transformer is repaired, it is necessary to conduct the test in time, and the inspection can only be used after the inspection meets the requirements.

Siemens APT current transformer - inspection content of current transformer

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