Because the electrode lifting mechanism did not reach the position, the secondary load was heavy when the power was supplied, the two-phase overcurrent tripped, and the light gas alarm was sounded at the same time. After the gas was discharged, the gas was ignited and flammable, and then the power was tested and it ran normally. The collapse of materials in the box-type electric furnace and the physical reaction mechanism in the furnace are easy to cause the secondary current to increase, and even the secondary side electrode short circuit and other phenomena, which have a great impact on the electric furnace transformer. The electric furnace transformer is an electrical equipment operating under harsh working conditions.
There was a 12.5MVA ore-fired furnace producing silicon manganese products. Suddenly, two light gas alarm signals occurred, and the alarms generated by the two light gas were highly valued. The first light gas alarm signal was when the furnace was operating normally. Due to the physical and chemical reaction in the furnace, the secondary current increased. The rated current was 206.2A. At that time, it was running at 260A (the industry allows overload operation of 20-30%). The light gas alarm signal appeared. After the power outage, the gas was discharged and the power was supplied normally, and no abnormality was found. However, the second time, the light gas signal is when the furnace is powered on during shift change. The electric furnace transformer is one of the important components of ferroalloy equipment. The operating characteristics of the box-type furnace transformer are: frequent power outages, 24-hour operation, and electrode discharge after the furnace is taken out of the furnace, about 8-12 times. In addition, due to the characteristics of the smelting process, the load fluctuates greatly.
Your message must be between 20-3,000 characters!
