STS-6000K-H1 Smart Transformer Station (Vietnam,
Duc Long Gai Lai)
Installation Guide
7 Connecting Cables
Issue 02 (2020-02-21)
Copyright © Huawei Technologies Co., Ltd.
45
7.3 Connecting an AC Input Power Cable
Requirements for OT/DT Terminals
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-to-aluminum wiring terminals, or
aluminum wiring terminals along with copper-to-aluminum washers.
Do not connect aluminum wiring terminals to the AC terminal block. Otherwise
electrochemical corrosion may occur, affecting the reliability of cable connections.
Comply with the IEC 61238-1 requirements when using copper-to-aluminum wiring
terminals, or aluminum wiring terminals along with copper-to-aluminum washers.
Do not mix up the aluminum and copper sides of the copper-to-aluminum washers. Ensure
that the aluminum side of the washer contacts the aluminum wiring terminal, and the
copper side contacts the AC terminal block.
Figure 7-4
Requirements for OT/DT terminals
