Various models of gas relief safety valve

Henan New Electric Power Co., Ltd deals in the R&D, manufacturing and sales of various medium, high and Low Voltage Transformer and Transformer Accessories. The transformer accessories mainly include Buchholz Relay, Tap Changer , oil level gauge, butterfly valve, Moisture Absorber, pressure reducing valve, Cross Flow Cooling Fan, Bimetal Thermometer, Epoxy Resin Insulator, etc.

working principle

Due to the limitation of the upper structure of the transformer oil tank, the pressure relief valve is usually installed around the top cover, as close to both ends of the oil tank as possible, and can be installed at any position between the top of the iron core and the top of the winding. Such installation can ensure effective oil drainage after the pressure relief valve works. When the pressure relief valve is installed directly above the winding, if the pressure of the winding is not enough, when the external short circuit occurs, the winding coil will be subjected to a strong current, forming a shock wave. If the pressure relief valve is installed just above the magnetic leakage duct, the pressure relief valve will act first. Generally, the shock wave generated by the short circuit current is small. If the external fault disappears, the oil pressure of the pressure relief valve will also disappear, and then the pressure relief valve will automatically return to the original working state. Normally, the pressure relief valve of the larger transformer will be installed at both ends of the transformer.