Huawei SUN2000-2KTL-L1 User Manual page 41

SUN2000-(2KTL-5KTL)-L1
User Manual
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Additional Information
The SUN2000 provides the grounding detection function. This function is used to check
whether the SUN2000 is properly grounded before the SUN2000 starts, or check whether the
ground cable is disconnected when the SUN2000 is running. This function is only available
under limited conditions. To ensure the safe operation of the SUN2000, properly ground the
SUN2000 according to the connection requirements of the ground cable. For some power grid
types, if the output side of the SUN2000 is connected to an isolation transformer, ensure that
the SUN2000 is properly grounded and set Grounding inspection to Disable to enable the
SUN2000 to run properly. If you are not sure whether the SUN2000 is connected to such a
type of power grid, contact your dealer or Huawei technical support for confirmation.
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Procedure
Step 1 Crimp an OT terminal.
Issue 01 (2020-04-17)
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.
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The PE point at the AC output port is used only as a PE equipotential point, and cannot substitute for
the PE point on the enclosure.
 It is recommended that silica gel or paint be used around the ground terminal after the PE cable is
connected.
According to IEC 62109, to ensure the safe operation of the SUN2000 in the case of
ground cable damage or disconnection, properly connect the ground cable of the
SUN2000 and ensure that it meets at least one of the following requirements before the
grounding detection function becomes invalid:
− The PE cable is a single-core outdoor copper cable with a conductor cross-sectional
area of at least 10 mm
− 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 chassis.
In some countries and regions, the SUN2000 must have additional ground cables. 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 chassis.
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