肘型避雷器为电气设备提供防雷及过电压保护。使用时直接插在双通套管或T-II型接头上。避雷器采用独特的脱离防爆装置，在中性点任何一种接地方式下，避雷器长期运行蜕化或因雷击损坏时脱离装置都能可靠动作(弹出避雷器阀片)。有效防止避雷器发生爆炸和电力系统的永久性接地故障，确保电网安全运行。

Elbow surge arrester provides lightning protection and overvoltageprotection for electrical equipment. when using just straightforwardplug into the double-way bushing or T-I type connector. The surgearrester adopts a unique detachment explosion-proof installation. Thedisengagement device can reliably operate (pop up the surge arrestervalve) when the surge arrester decays after long-time operation or thesurge arrester is damaged by lighting strikes, in any grounding modeof the neutral point . The surge arrester can effectively prevent theexplosion of surge arrester and permanent ground faults of the powersystem, and ensures the safety of the power grid.