短路保护电器 SCPD ; [电] short-circuit protective device
电弧故障保护电器 AFDD
过电流保护电器 Overcurrent protective devices
电涌保护器 SPD ; surge protective device ; Voltage surge protectors ; Protectors ; surge protector
保护继电器 [电] protective relay ; [电] keep relay ; BHJ ; CSPC
漏电保护器 RCD ; GFCI ; PRCD ; ALCI ; earth leakage protective device
短路保护电器SCPD short circuit protected electrical devices
保护电容器 [电] protective capacitor ; capacitor for voltage protection ; protective condenser ; capacitor
保护电器在低压配电系统中占有重要地位。
Protection apparatus plays an important role in the low-voltage electrical distribution systems.
在电流过大或设备有故障时，能自行熔断以切断电路的保护电器。
In the current is too large or equipment failure on their own to cut the fuse protection of electrical circuits.
分析了TT和TN系统的接地故障保护和保护电器及其应用条件。
The earth fault protection and protective electric devices of TT and TN system and the application conditions were analyzed.
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