● If the external AC switch can perform earth leakage protection, the rated
leakage action current should be greater than or equal to 500 mA.
● If multiple SUN2000s connect to the general residual current device (RCD)
through their respective external AC switches, the rated leakage action current
of the general RCD should be greater than or equal to the number of
SUN2000s multiplied by 500 mA.
● Use a socket wrench and extension rod to connect the AC power cable. The
extension rod must be longer than or equal to 100 mm.
●
Sucient slack should be provided in the PE cable to ensure that the last cable
bearing the force is the PE cable when the AC output power cable bears pulling
force due to force majeure.
● Do not install third-party devices in the AC connection box.
● You need to prepare M8 OT terminals by yourself.
● If the AC MBUS is used, multi-core cables are recommended, supporting a
maximum communication distance of 1000 m. To use other types of AC power
cables, contact the Company's technical support.
Requirements for the OT or DT Terminal
● If a copper cable is used, use copper wiring terminals.
● If a copper-clad aluminum cable is used, use copper wiring terminals.
● If an aluminum alloy cable is used, use copper-aluminum transition wiring
terminals, or aluminum wiring terminals along with copper-aluminum
transition spacers.
● Do not connect aluminum wiring terminals to the AC terminal block. Otherwise
the electrochemical corrosion will occur and
aect the reliability of cable
connections.
● Comply with the IEC61238-1 requirements when using copper-aluminum
transition wiring terminals, or aluminum wiring terminals along with copper-
aluminum transition spacers.
● If copper-aluminum transition spacers are used, pay attention to the front and
rear sides. Ensure that the aluminum sides of spacers are in contact with
aluminum wiring terminals, and copper sides of spacers are in contact with the
AC terminal block.
SUN2000-(50KTL-ZHM3, 50KTL-M3)
User Manual 5 Electrical Connections
Issue 05 (2023-02-28) Copyright © Huawei Technologies Co., Ltd. 39
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