When internal resistance is alarmed, the alarm lamp lights; when voltage is alarmed, voltage indicator lamp lights.
当出现内阻报警时报警指示灯亮，当出现电压报警时电压指示灯亮。
Install incoming disconnect switch, incoming current meter, voltage meter (switchable) and incoming voltage indicator light.
安装进线刀开关、进线电流表、电压表(可切换)和进线电压指示灯。
Install incoming disconnect switch, incoming current meter, voltage meter (switchable) and incoming voltage indicator light.
安装进线刀开关、进线电流表、电压表(可切换)和进线电压指示灯。
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