Huawei SUN2000L - Page 47

SUN2000L-(2KTL-5KTL)
User Manual
5 Electrical Connections
Issue 02 (2017-12-12)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
40
Do not connect any load between the SUN2000L and the AC switch.
Context
The SUN2000L can detect the grounding. This function is used to detect whether the
SUN2000L is properly grounded before starting the SUN2000L, or to detect whether the PE
cable is disconnected when the SUN2000L is working. This function is available only under
limited conditions. To ensure the safe operation of the SUN2000L, properly ground the
SUN2000L in strict accordance with the connection requirements for PE cables. For certain
types of power grids, if an isolation transformer connects to the output side of the SUN2000L,
you need to set OFF due to abnormal grounding to Disable (see 7.4.5.3 Feature Parameters
for details) after checking that the SUN2000L is properly grounded. Then the SUN2000L can
start normally. If you are not sure whether the SUN2000L connects to such a power grid,
confirm it with your dealer or Huawei technical support.

According to IEC62109, to ensure the safe operation of the SUN2000L in the case of PE cable
damage or disconnection, connect the SUN2000L PE cable according to the requirements described
in 5.2 Installing the PE Cable and ensure that the SUN2000L PE cable meets at least one of the
following requirements before disabling the grounding detection function.
The SUN2000L PE cable is a copper cable with a cross-sectional area of at least 10 mm
2
.
Use two cables that have the same diameter as the AC output power cable to ground the PE terminal
on the AC connector and the ground screw on the enclosure respectively (see 5.2 Installing the PE
Cable and 5.3 Installing the AC Output Power Cable for details).

Certain countries require an additional PE cable for the SUN2000L. In this case, use two cables that
have the same diameter as the AC output power cable to ground the PE terminal on the AC
connector and the ground screw on the enclosure respectively (see 5.2 Installing the PE Cable and
5.3 Installing the AC Output Power Cable for details).
Procedure
Step 1 Connect the AC output power cable to the AC connector.