How to handle secondary open circuit faults in Miniature Current Transformer

1. When we see the secondary open circuit of the current transformer, first distinguish which current loop is, and then judge the phase of the open circuit to see if it affects the protection, and then report to the dispatcher to release the protection that may be malfunctioning; at this time, pay attention to avoid Increase the primary load current. If necessary, a bypass power supply can be used to ensure power supply.

2. Perform a secondary short circuit on the Miniature Current Transformer as close as possible to the test terminal, and then check and deal with the disconnection point. At this time, attention should be paid to the use of short-circuit dedicated short-circuit wiring during the short-circuit process. Make sure the short circuit is reliable. At this point, follow the drawings.

3. For the secondary open circuit fault of the Miniature Current Transformer, attention should also be paid to the short circuit phenomenon. At this time, if there is spark during short circuit, attention should be paid to effective short circuit. At this point, the point of failure is in the circuit below the shorted contact, and we can then find it further in this way to narrow it down.

For the secondary open circuit fault of Miniature Current Transformer, it should be stated that if it is a fault that cannot be handled by ourselves or the cause is unknown, we should report it to the superior in time and wait for it to be dealt with. At this time, attention should be paid to the secondary short circuit of the Miniature Current Transformer, or if necessary, load transfer and power failure processing should be performed.