Replacing A Disconnector - Huawei JUPITER-3000K-H1 Smart User Manual

JUPITER-(3000K, 6000K, 9000K)-H1 Smart
Transformer Station
User Manual
Figure 6-74 Removing the old ring main unit
Step 10 Install the new ring main unit in the MV room of the STS. (The installation
procedure is in the reverse order of the removal. Only text description is provided
here.)
1.
2.
3.
4.
Step 11 Check that cables are securely connected, the environment is clean and tidy, and
there are no foreign objects inside the STS. Then close the door of the STS.
----End
Power-On
Perform operations in the reverse order of the power-off operations.

6.8.20 Replacing a Disconnector

Context
If the disconnector in the LV room is faulty during maintenance, power it off and
replace it.
Power-Off
1.
2.
3.
Issue 02 (2023-09-30)
Place the new ring main unit on the base using a crane, and secure the ring
main unit to the base.
Move the ring main unit to the MV room of the STS using a forklift.
Tighten the screws at the bottom and top of the ring main unit.
Connect the ground cable of the ring main unit and cables of the secondary
room, and install AC power cable connectors.
(Optional) Shut down the UPS inverter 3UI. Perform this operation when the
UPS has been installed.
Ensure that the inverter or PCS is shut down and not energized.
Turn off the ACB (1QA) of LV PANEL A in the LV room.
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6 System Maintenance
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