Procedure
Step 1 Slide an AC heater along the guide rails into the cabinet, and then tighten four M6x16 screws
on the panel until the tightening torque reaches 3 N·m, as shown in Figure 7-50.
Figure 7-50 Installing an AC heater
Step 2 Install a power cable for the heater, as shown in Figure 7-52.
1. Remove the cover plate from the junction box.
2. Route the power cable for the junction box into the TMC11H along the left, link the OT
terminal at one end of the cable to AC power input terminals labeled L and N in the junction
box in the TMC11H, as shown inFigure 7-51 .
Figure 7-51 Installing the power cable for the junction box in the TMC11H
3. Respectively connect the OT terminals on the brown, blue, and yellow and green wires at
one end of the power cable for the heater to the L0, N0, and PE wiring terminals in the
junction box.
4. Link the C13 connector at the other end to the power supply socket on the heater.
DBS3900 (Ver.B)
Installation Guide
7 Outdoor Scenario with DC Power Supply (BBU Installed
in a TMC11H)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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