earthed switch meaning in English

避雷接地开关
接地开关

High - voltage alternating - current disconnectors and earthing switches
高压交流隔离开关和接地开关
Specifications for hv ac disconnectors and earthing switches
交流高压隔离开关和接地开关订货技术条件
Single - post earthing switch ; rated voltage 420 kv ; terminal and mounting dimensions , layout
单柱接地开关.额定电压为420kv .连端子和安装尺寸布
High - voltage switchgear and controlgear - high - voltage alternating current disconnectors and earthing switches
高压开关设备和控制设备.高压交流断路器和接地开关
High - voltage switchgear and controlgear - part 102 : alternating current disconnectors and earthing switches
高压开关设备和控制设备.第102部分:交流断路器和接地开关

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