Transformer core common type of fault 2019-6
30 15:05:32 multipoint earthing fault of transformer core just one, in addition, there are some other common transformer iron core fault: (
A core shell and touch.
After the installation, due to the negligence, not the tank lid on transportation stability (
Nail over or dismantle, causing the core into the tank shell;
Iron core is touching core limb plate column;
Silicon steel sheet warp hit a clip a limb plate;
Core under a cardboard between legs and iron yoke off, shoes into the silicon steel sheet;
Thermometer seat cover is too long and clip into pieces or iron yoke, core column, etc.
Wear core bolt steel seat cover is too long and short silicon steel sheet.
Fuel tank inside the foreign body, make the silicon steel sheet local short circuit.
Core insulation be affected with damp be affected with damp or damage, such as bottom sludge and moisture, insulation resistance drops, pieces of insulation, insulation insulation, tin box pad iron (
Cardboard or wood)
Be affected with damp be affected with damp or damage, leading to a high iron core multipoint earthing resistance.
Submersible pump bearing wear, metal powder into the fuel tank, accumulation in the bottom of the form in electromagnetic gravity bridge road, with legs on the track or get through, at the bottom of multipoint earthing.
Operation maintenance is poor, not timely maintenance.
Approach to each type of fault, fault handling methods in fault may cause more serious failure.
In transformer core fault should, therefore, make sure what kind of failure, and then suit the remedy to the case, fast and efficient processing core of failure.