Transformer inspection

1. Check before power transmission, work ticket termination, restore to pre-maintenance safety measures. Open the gas relay vent valve, vent the gas, close the valve. Cooler power input, cooler operation is normal. Transformer oil level is normal. No oil leakage in transformer. 2, the operation of the inspection, transformer oil pillow oil level, oil color is normal, no oil seepage. No leakage of oil, no damage, no discharge phenomenon. Transformer sounds good. Silicone's dry. No oil leakage in transformer body. Transformer oil temperature and temperature controller are normal. Oil System Valve open and close correctly, Fan, oil pump normal operation gas relay without gas, relay and oil pillow valve open. Dry-type transformer temperature indication is correct, cooling fan is working properly. If the ambient temperature is too high or too low, check whether the oil level of the transformer is in the normal range. Increase inspection frequency within 72 hours of commissioning.