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STS-(3000K, 6000K)-H1 Smart Transformer Station Installation Guide
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Connecting Cables to an SACU

Connecting Cables to an SACU

  • The installation position of an SACU is reserved outside the MV room.
  • The cables of the SACU have been reserved on auxiliary transformer side in the MV room before delivery.
Table 7-2 SACU cable labels

Cable Type

STS End (Preinstalled)

SACU End

PE cable

XXX-PE:4-SACU-PE

XXX-SACU-PE-PE:4

Three-phase AC power cable

Route 1:

XXX-3X1:1:2-SACU:L1-1

XXX-3X1:2:2-SACU:L2-1

XXX-3X1:3:2-SACU:L3-1

XXX-3X1:4:2-SACU:FE01

Route 2:

XXX-3X1:5:2-SACU:L1-2

XXX-3X1:6:2-SACU:L2-2

XXX-3X1:7:2-SACU:L3-2

XXX-3X1:8:2-SACU:FE02

Route 1:

XXX-SACU:L1-1-3X1:1:2

XXX-SACU:L2-1-3X1:2:2

XXX-SACU:L3-1-3X1:3:2

XXX-SACU:FE01-3X1:4:2

Route 2:

XXX-SACU:L1-2-3X1:5:2

XXX-SACU:L2-2-3X1:6:2

XXX-SACU:L3-2-3X1:7:2

XXX-SACU:FE02-3X1:8:2

RS485 communications cable

XXX-3X1:9:2-SACU:9

XXX-3X1:10:2-SACU:10

XXX-3X1:PE:2-SACU:PE

XXX-SACU:9-3X1:9:2

XXX-SACU:10-3X1:10:2

XXX-SACU:PE-3X1:PE:2

Single-phase AC power cable

XXX-3FB3:2-SACU:L

XXX-3FB3:4-SACU:N(L)

XXX-3X1:PE:1-W5:SH

XXX-SACU:L-3FB3:2

XXX-SACU:N(L)-3FB3:4

XXX-W5:SH-3X1:PE:1

Note: XXX indicates the cable number, which is for reference only.

  1. Install an SACU.

    Figure 7-15 Installing an SACU

  2. Connect a PE cable.

    Figure 7-16 Connecting a PE cable

  3. Connect three-phase AC power cables.

    • For the SACU that houses one potential induced degradation (PID) module, connect the three-phase AC power cable to the FU01 switch, and the functional earthing (FE) cable to FE01 on the FE bar.
    • For the SACU that houses two PID modules, connect the three-phase AC power cable of the first route to the FU01 switch, and the corresponding FE cable to FE01 on the FE bar. Connect the three-phase AC power cable of the second route to the FU02 switch, and the corresponding FE cable to FE02 on the FE bar.
    • Do not reversely connect the cables to FE01 and FE02.
    • This document describes how to connect three-phase AC power cables for the SACU that houses two PID modules. For details about how to connect a three-phase AC power cable for the SACU that houses one PID module, refer to the way of connecting the first route of the three-phase AC power cable.
    Figure 7-17 Connecting three-phase AC power cables

  4. Connect an RS485 communications cable.

    Figure 7-18 Connecting an RS485 communications cable

  5. Connect a single-phase AC power cable. Insulate the unused cable terminals and bind them in the cable holder.

    Figure 7-19 Connecting a single-phase AC power cable

  6. Connect an IMD cable.

    Figure 7-20 Connecting an IMD cable

  7. Use firestop putty to seal the cable hole in the container.
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Updated: 2019-12-05

Document ID: EDOC1100115701

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