Huawei SUN2000 MAP0 Series - Connecting a PE Cable

5.3 Connecting a PE Cable
Precautions
D ANGER
● Ensure that the PE cable is securely connected. Otherwise, electric shocks may
occur.
● Do not connect the neutral wire to the enclosure as a PE cable. Otherwise,
electric shocks may occur.
NO TE
● The PE point at the AC output port is used only as a PE equipotential bonding point,
and cannot substitute for the PE point on the enclosure.
● It is recommended that silicone grease or paint be applied around the ground terminal
after the PE cable is connected.
● You can enable or disable phase-to-ground short-circuit protection on the app (choose
Settings > Feature parameters > Phase-to-ground short-circuit protection) to
address the situation in which a phase wire is short-circuited to PE. If this function is
disabled, the inverter detects the alarm and can connect to the power grid and generate
power normally. This function applies only to the SUN2000-5K-MAP0-ZH, SUN2000-6K-
MAP0-ZH, SUN2000-8K-MAP0-ZH, SUN2000-10K-MAP0-ZH, and SUN2000-12K-MAP0-
ZH.
Additional Information
The inverter provides the grounding detection function. This function is used to
check whether the inverter is properly grounded before the inverter starts, or
check whether the ground cable is disconnected when the inverter is running. This
function is only available under limited conditions. To ensure the safe operation of
the inverter, properly ground the inverter according to the connection
requirements of the PE cable. For some power grid types, if the output side of the
inverter is connected to an isolation transformer, ensure that the inverter is
properly grounded and then set Grounding Exception Detection to Disable so
that the inverter can run properly.
● According to IEC 62109, to ensure the safe operation of the inverter in the
case of PE cable damage or disconnection, properly connect the PE cable of
the inverter and ensure that it meets at least one of the following
requirements before the grounding detection function becomes invalid.
– If the PE terminal of the AC connector is not connected, the PE cable on
the enclosure must be a single-core outdoor copper cable with a cross-
sectional area of at least 10 mm
2
.
– Use cables with the same diameter as the AC output power cable and
ground the PE terminal on the AC connector and the ground screws on
the enclosure.
● In some countries and regions, the inverter must have additional ground
cables. In this case, use cables with the same diameter as the AC output
SUN2000-(5K-12K)-MAP0 Series
User Manual 5 Electrical Connections
Issue 01 (2024-05-13) Copyright © Huawei Digital Power Technologies Co., Ltd. 44