保接地 protective earthing ; safety earthing

接地保护 [电] ground protection ; ground fault protection ; Ground detection ; grounding protection

接地保护装置 ground fault protection ; earth fault protection ; [电] earth protective device

不接地保护 PU

保护性接地 protective earthing ; Protective ground

保护接地与中性线共用 PEN

保安接地网 protecting grounding network

保护接地和中性线 PEN

雷电保护接地 lightning protective ground

定子接地保护 Stator earth-fault protection ; stator ground protection ; stator ground fault protection ; fault protection