Forest Fires Caused By Improper Use Of Transformers

A forest fire broke out in Muli County, Liangshan Prefecture, Sichuan Province, and 30 firefighters died. They used their young lives to protect the peace of the world. The fire is ruthless, but the heroes are immortal! The mountains and rivers are safe, and we remember the heroes tonight! Salute to the heroes! Have a good journey! We don’t know whether forest fires are natural disasters or man-made disasters, but in real life we ​​see many man-made fires, causing huge economic losses and casualties. There are also many fires caused by short circuits. The following explains the cause of the Constant Voltage Transformer(CVT) fire. After the primary winding of the transformer is energized, the magnetic flux tested by the coil flows in the iron core. The iron core itself is a conductor, and an induced potential will be generated on the plane perpendicular to the magnetic lines of force. A closed loop is formed on the cross section of the iron core and a current is generated, which is called "eddy current". This eddy current will increase the loss of the transformer and heat the iron core of the transformer. In addition, the copper wire used to wind the transformer also has resistance. When the current passes through, a certain amount of power will be consumed. This part of the loss will become heat, which will cause the temperature of the transformer to rise during operation. As the temperature of the transformer rises, the coil will inevitably age. When the insulation performance decreases after aging, the ability to resist the impact of the mains electricity will be weakened, which will easily cause the transformer to be broken down and burned, and in severe cases, it will catch fire and cause a fire. Therefore, the selection of raw materials for the transformer is crucial. Tianhengda transformer silicon steel sheets use imported or domestic high-quality silicon steel sheets with high silicon content, which will be more expensive. Good silicon steel sheets have the advantages of low noise, low heat generation, and high temperature resistance. Using high-quality all-copper coils, good copper wires have good electrical conductivity, are not easy to heat up, and the insulation and high temperature resistance of the outer lacquer are stronger. Therefore, Tianhengda brand transformers have the advantages of sufficient power, high efficiency, and high temperature resistance. To use the transformer safely, you must pay attention to two matters: 1. Ventilation and heat dissipation. Generally, the dry-type transformer chassis is equipped with heat dissipation shutters and exhaust fans. 2. Overload use, which is the most fatal reason for the transformer. According to our statistics, 90% of transformer failures are due to overload use. For example, a 10KVA transformer has a power factor of 0.7, so it is suitable for 7000W equipment. Here we would like to remind all customers not to underreport the power consumption or buy small power transformers in order to save costs. This will cause the transformer to be not durable and have a short lifespan, which may cause greater losses.