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9 Checking the Cabinet Installation
NO
Requirement
1
The cabinet components are installed correctly. The cabinet door shall have no
distortion. The boards can be plugged and unplugged without difficulty.
2
The cabinet is installed correctly without flake-off or damage.
3
The cabinet is installed reliably, satisfying the quakeproof requirements in the
project file.
4
The cabinet installation site complies with the project file.
5
All cable apertures are sealed well, including apertures for power cables, ground
cable, optical cable, and external subscriber cables.
6
The external positive lead and positive lead of battery are correctly and reliably
connected to the power system.
7
The protective cap on the wiring terminal of the battery is intact.
8
None of the cables has damage, fracture, or joint on the cable.
9
The power cable and ground cable adopt a whole segment of copper core. The
cable has no joint in the middle or scratch on the skin.
10
The cross sectional area of the power cable and that of the ground cable comply
with the project file, satisfying the power distribution requirements of the cabinet.
11
Optical fiber headers and board optical ports to be used are protected with
protective caps. If necessary, clean them in compliance with Huawei regulations.
12
Cables outside the cabinet are buried underground if possible. If they are routed
through the cabling rack, the lightning proof measures shall be adopted.
13
The cabinet is grounded properly and the ground resistance is smaller than 10
ohms.
14
An electrical leakage protective device is installed on the power supply side of the
site. If such a device does not exist, it is recommended to install this device.
15
An all-polarity disconnection device is installed on the power supply side of the
site. If such a device does not exist, it is recommended to install this device.
16
The inner cabinet is clean and neat, and free of redundant sundries. Ensure that
the air intake vent and air exhaust vent of the device are not blocked by any
object.
73
Method
Observe and try out
Observe
Observe
Observe
Observe
Test with a multimeter
Observe
Observe
Observe
Observe
Observe
Observe
Test with the ground
resistance test
equipment
Observe
Observe
Observe
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