① Damage and flashing of the casing, oil flowing out under the pressure of the conservator and burning on the top cover;
② Internal faults in transformers cause the casing or radiator to rupture, causing the burning transformer oil to overflow.
If the transformer catches fire, the following measures should be taken promptly:
① Disconnect the circuit breakers on each side of the transformer, cut off the power supply on each side, and quickly switch on the backup transformer to restore power supply;
② Stop the operation of the cooling device;
③ When the main transformer and high voltage auxiliary transformer catch fire, the generator should be disconnected first;
④ If the oil burns on the top cover of the transformer, the lower emergency drain valve should be opened to drain the oil to the appropriate position. If there is a fire inside the transformer, then
Do not drain oil to prevent the transformer from exploding;
⑤ Quickly use fire extinguishing equipment to extinguish the fire. For example, use dry fire extinguisher or foam fire extinguisher to extinguish the fire. Notify the fire brigade to extinguish the fire if necessary. This kind of occurrence
During an accident, the transformer protection should act to disconnect the circuit breaker. If the circuit breaker is not disconnected due to a malfunction, manual operation should be used to immediately disconnect the circuit breaker,
Open the isolation switch that may lead to the transformer power supply.