SF6密度继电器现场校验的必要性

SF6气体具有优越的绝缘性能、灭弧特性和稳定的化学性能,在电力系统中得到了广泛的应用,尤其是应用于各种电力高压开关设备。由于现场运行的SF6气体密度继电器是处在户外高压开关设备上,常年气候冷热变化的影响,会使SF6气体密度继电器的橡胶密封件有不同程度的损伤,密度继电器因不常动作会导致触点不灵活或接触不良等现象,从实际运行情况看,对运行中的SF6密度继电器、压力表进行定期校验是非常必要的。

The necessity of the scene verification of SF6 density relay

SF6 has the good insulation performance, arc extinguish characteristic and steady chemical performance, which is applied widely in the power system, especially used in varies high voltage switch device. Because the scene of operation of SF6 density relay is on outdoor high voltage switch device, often suffers weather changing, the rubber seals of SF6 density relay are damaged in different extent, and owing to the density relay does not often to act lead to the contact sensitivity reducing or contact failure. From the point of the practical condition, it＇s necessary to make fixed verification on field operating SF6 density relay and the pressure meter.