6.3.2 Assembling the grid connectors
Step 1：
Switch off the miniature circuit-breaker or the switch of every energy sources and
secure it against being inadvertently switched back on.
Grounding conductor monitoring
The inverter is equipped with a grounding conductor monitoring device. This grounding conduc-
tor monitoring device detects when there is no grounding conductor connected and disconnects
the inverter from the utility grid if this is the case. Depending on the installation site and grid
configuration, it may be advisable to deactivate the grounding conductor monitoring. This is
necessary, for example, in an IT system if there is no neutral conductor present and you intend to
install the inverter between two line conductors. If you are uncertain about this, contact your grid
operator or AISWEI.
Safety in accordance with IEC 62109 when the grounding conductor monitoring is deactivat-
ed.
In order to guarantee safety in accordance with IEC 62109 when the grounding conductor
monitoring is deactivated, carry out the following measure:
• Connect an additional grounding that has at least the same cross-section as the con-
nected grounding conductor to the AC cable. This prevents touch current in the event
of the grounding conductor on the AC cable failing.
UM0035_ASW05-12kH-T2-T3_EN_V01_0523
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