lead type transformerAccident handling. Treatment standard for transformer trip: when the transformer trips, the inspection should be stopped according to the on-site rules and regulations, the status of maintenance measures and external phenomena when the accident occurs should be analyzed, the accident situation should be judged, and measures should be taken. Treatment should be stopped. Gas maintenance and differential maintenance trip at the same time, the cause is not determined to be not energized before troubleshooting.
Whenlead type transformerWhen the differential maintenance trips at the same time, the main transformer should be checked externally immediately, and the relevant personnel of the work area, experiment, maintenance and relay should be notified to rush to the site to check the primary and secondary circuits of the transformer, and stop the oil and gas characteristics of the transformer. Measure and conduct comprehensive experiments of DC resistance and insulation to find out the cause and deal with it.
When it proves that there is no problem with the transformer and its maintenance and control circuits, the transformer can be forced to stop once. When the system is urgently needed, the external inspection and insulation test of the main transformer are not abnormal, and the trial operation can be carried out after the supervisor's guidance or the chief engineer's approval. Once the transformer gas maintenance action trips, it can only be trial run. The fault can only be found when the exact basis is found to prove that there is a gas maintenance fault or there is no problem inside the transformer.
Whenlead type transformerWhen the overcurrent maintenance action trips, the transformer and its load status and distribution line maintenance action status should be fully checked and analyzed. If it is determined that it is a through fault and a jump trip occurs, the faulty distribution line switch can be turned off immediately and the power supply to the transformer can be stopped without inspection. Non-fault distribution lines are assigned one by one, and then the work area is notified for experimental inspection.