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16
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5.3 The connec�on of the ground line
Good grounding is good for resis�ng surge voltage shock and improving EMI perfor-
mance.Therefore, before connec�ng AC, DC and communica�on cables, you need to ground
the cable firstly. For a single system, just ground the PE cable. For mul�ple machine systems,
all PE cables of the inverter need to be connected to the same grounding copper platoon to
ensure the equipoten�al connec�on. The installa�on of the shell ground wire is shown as
picture 5.11.
Warning:
Inverter has built-in leakage current detec�on circuit, If an external leakage
current protec�on device is connected, its opera�ng current must be greater
than 300 mA or higher, otherwise inverter may not work properly.
Pic 5.11The installa�on of the shell ground wire
