Make sure the ground terminal of the DC power supply is grounded.
确保直流电源的接地端是接地的.
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BACK JUMPER A WIRE FROM GROUND TERMINAL # 4 TO GROUND TERMINAL # 5 IN DLC.
在DLC上把一根跳线从地端 # 4回放至地端 # 5.
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HSE ensure that: all the circuits will install leakage protection, pre - ground terminal and earthing.
HSE保证: 电路各房均安装漏电保护器 、 接地端子和预制备接地桩.
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