Huawei Quidway S3900 Series Installation Manual

Installation Manual
Quidway S3900 Series Ethernet Switches Chapter 3 Installing the Switch
Huawei Technologies Proprietary
3-3
Caution:
Before powering on the switch, connect the ground wire.
3.2.2 Connecting the DC-Input Power Cord
＋－NULL＋－NULL
+: -48V working ground -: -48 to -60 V
NULL: reserved
Figure 3-3 DC-input power connector (partial)
Step 1: Connect one end of the chassis ground wire to the grounding screw on the rear
of the chassis and the other end to the ground as near as possible.
Step 2: Connect DC-input socket.
Screw 1
Screw 2
Screw 3
Cable 1
Dust-proof shield
Cable tie
Connector
Screw 4
Cable 2
Screw 1
Screw 2
Screw 3
Cable 1
Dust-proof shield
Cable tie
Connector
Screw 4
Cable 2
Figure 3-4 RPS DC-input connector
(1) As shown in Figure 3-4, first insert two cables into the appropriate holes through
dust-proof shield, and then fix the cables separately by using screws 1 and 2. Make
sure that the positive and negative ends of the cable are inserted appropriately and
accord with silkscreen on the holes.
(2) Fix the dust-proof shield by screws 3 and 4 by using a small flathead screwdriver,
see Figure 3-4.

Huawei Quidway S3900 Series Specifications

General

Brand	Huawei
Model	Quidway S3900 Series
Category	Switch
Language	English