How to maintain electric furnace transformer
During the storage, transportation or operation and maintenance of the transformer insulating oil, if the oil quality is poor or the impurities or moisture are too much, the dielectric strength will decrease. When the dielectric strength decreases to a certain value, the transformer will be short-circuited and cause sparks, arcs or Risk temperature. Therefore, the oil quality of the transformer should be checked regularly during operation, and the unqualified oil should be replaced in time.
In order to avoid the aging and damage of the iron core insulation layer of the electric furnace transformer: the aging of the iron core insulation layer or the damage of the fastening bolt sleeve will cause the iron core to generate large eddy currents, which will cause eddy currents. Long-term heating of the iron core will cause insulation aging. In order to avoid accidental damage to the insulation during the maintenance process: When checking and repairing the hanging core of the transformer, please pay attention to the maintenance of the coil or the insulating sleeve. If scratches are found, please dispose of them in time.
The internal joint of the coil, the connection point between the coils, the contacts leading to the upper and lower pressure side bushings, and the fulcrum of the tap changer are not in good contact, which will cause some overheating, damage to the insulation and cause short circuit or short circuit. Open circuit. The high temperature generated at this moment The arc will break down the insulating oil, generate a lot of gas, and add pressure in the transformer. When the pressure exceeds the maintenance setting of the gas circuit breaker without tripping, an explosion will occur.
If the coil or load of the electric furnace transformer is short-circuited, the transformer will bear a considerable short-circuit current. If the maintenance system is defective or the maintenance setting is too large, the transformer may be burned. Therefore, a reliable short-circuit maintenance installation should be installed. Maintain good grounding: For the use and maintenance of low-voltage systems connected to zero, the neutral point of the low-voltage side of the transformer should be directly grounded. When the 3-phase load is unbalanced, the current will appear on the zero line. When the current is too large and the touch resistance is large, the high temperature will Combustible materials presented at the pick-up address and lit for 4 weeks.
The partial discharge of the transformer is small, and at the same time, it has a high electrical strength under the same insulation level. Even if it is ignited by an open flame, it will self-extinguish. It does not contain any toxins, and will not release harmful gases even after burning. The combustion flue gas has low temperature and high transparency. In addition, it will not cause damage to personnel, equipment and the environment during manufacturing, transportation, storage and operation.
