LHQ（BYL）系列電纜護層保護器用于保護高壓電纜的護層絕緣免受過電壓的損害，帶計數(shù)器電纜護層保護器并能自動記錄電纜護層保護器在過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.