Operation and Maintenance
　　1, to prevent overload operation of the transformer: If the long-term overload operation, will cause coil fever, so that insulation aging, resulting in short circuit between the box, phase short circuit or short-circuit and oil decomposition;
　　2, to prevent the transformer core insulation aging damage: core insulation aging or clamp bolt casing damage, will produce a large eddy current core, causing long-term core insulation caused by aging;
　　3, to prevent accidental damage to insulation Insulation: transformer repair hanging core, should pay attention to the protection of the coil or insulating sleeve, if found to have worn damage, should be promptly handled.