The accident of oil immersed transformer explosion in baoding is frequently happened. As the oil immersed transformer explosion is a relatively slow development process, once the explosion happens, there will be casualties and huge economic losses, which can be said to be very terrible. The operation of baoding oil-immersed transformer in the process of explosion is relatively large, so it is an important place. In order to avoid the accident of oil - immersed transformer explosion, we should start from "prevent".
1. Prevent overload operation of baoding oil-immersed transformer: if the transformer is overloaded for a long time, it will cause heating of the coil, gradually aging the insulation, short circuit between boxes, short circuit between phases, or short circuit to ground and oil decomposition;
2. Prevent aging and damage of iron core insulation of baoding oil-immersed transformer: aging of iron core insulation or damage of clamping bolt sleeve will lead to large eddy current of iron core. Long-term heating of iron core will cause aging of insulation.
3. Prevent accidental damage of insulation during maintenance: when the oil immersed transformer is overhauled with the lifting core, care should be taken to protect the coil or insulation sleeve. If any damage is found, it should be dealt with in time.
4. The maximum unbalance current of low voltage of baoding oil-immersed transformer shall not exceed 25% of the rated value; The allowable range of voltage variation of oil-immersed transformer is plus or minus 5% of rated voltage.
5. Ensure good wire contact: there is bad connection between the internal connector of the coil, bad contact between the connection point between the coil, the connection point of the side sleeve leading to high and low voltage, and each fulcrum on the tap switch. Local overheating will occur, insulation will be damaged, and short circuit or circuit break will occur. At this point, the high-temperature arc will cause the insulation oil to decompose, producing a lot of gas, baoding oil immersed transformer pressure added. When the pressure exceeds the set value of the gas breaker protection without tripping, an explosion will occur.
6. Good grounding: for low voltage system with protection contact zero (test). The neutral point on the low-voltage side of the baoding oil-immersed transformer shall be directly grounded. When the three-phase load is unbalanced, current will appear on the zero line. When this current is too large and the contact resistance is too large, high temperature will appear at the junction, leading to combustible materials around the ignition.
Baoding oil immersed transformer of these several measures to prevent the explosion to be always on attention, to prevent in the future, active prevention, if the oil immersed transformer is really an explosion, it is also late to cry!
Baoding zhongyi electric material manufacturing co., LTD is a professional manufacturer of transformer for baoding transformer factory. It has professional production equipment, hoisting, tooling and testing equipment, and has established a perfect quality management system.
Main products of the company: baoding dry type transformer, baoding box type transformer, baoding oil immersed transformer, baoding high and low voltage complete sets of equipment. I companies to follow "detail decides success or failure, honesty molded the future" of the enterprise purpose, adhere to "quality measuring market, seek development by innovation, to management for efficiency" business philosophy, to make my company's products are widely used in power plant, chemical, construction, mining, metallurgy, rail transportation and other industries, to meet the needs of various users, my company rely on superior product quality, thoughtful service, won the trust of our customers.
