LHQ（BYL）系列電纜護(hù)層保護(hù)器用于保護(hù)高壓電纜的護(hù)層絕緣免受過(guò)電壓的損害，帶計(jì)數(shù)器電纜護(hù)層保護(hù)器并能自動(dòng)記錄電纜護(hù)層保護(hù)器在過(guò)電壓作用下的放電次數(shù)。

LHQ（BYL）series protectors with cable sheath are applied in protecting insulated cable sheath with high voltage from damage caused by voltage. Protectors with cable sheath and a counter can automatically record discharge times of the protectors under voltage.