Response measures and solutions to faults in box furnace electric furnace transformers

Due to the electrode lifting mechanism not being lifted in place, the secondary load was heavy during power transmission, causing the A and B phases to trip due to overcurrent and a light gas alarm. After being ignited by gas discharge and flammable, it was tested and operated normally after power transmission. The collapse of materials in a box type electric furnace, based on the chemical reaction mechanism inside the furnace, can easily cause an increase in secondary current, or even a short circuit of the secondary electrode, which poses a significant impact hazard to the electric furnace transformer. The electric furnace and transformer are electrical equipment operating under harsh conditions.
A 12.5MVA submerged arc furnace suddenly experienced two light gas alarm signals during the production of silicon manganese products, and high attention was paid to the alarms generated by the two light gas gases. The first light gas alarm signal was generated during the normal operation of the furnace due to the physical and chemical reactions in the furnace, causing an increase in the secondary current. The rated current was 206.2A once, and the operation was 260A at that time (the industry allowed overload operation of 20-30%), A light gas alarm signal appeared, and the power was cut off and the gas transmission was normal. No abnormalities were found. However, the second time the light gas signal is transmitted during the furnace handover, and the electric furnace transformer is one of the important components of the ferroalloy equipment. The operating characteristics of the box furnace transformer are frequent power outage, 24-hour operation, discharge of electrodes, about 8-12 times, and the characteristics of the smelting process, resulting in significant load fluctuations.

The above content is organized by Superb heater Company, super heater. Mainly professional production: industrial heating elements, temperature measuring elements, production equipment, accessories, and raw materials such as tubular heaters, tubular heaters, belt heaters, ceramic heaters, silicone rubber heaters, thermocouples, etc.

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