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2
Checking the installation of power cables
No.
1
All the power cables and PGND cables are copper-core cables.
2
There are no solder joints or connectors in the power cables and the PGND cables.
3
The extra length of power cables or PGND cables are truncated and are not coiled.
4
There is no breaking equipment such as switches and fuses in the electrical connection of the grounding
system.
5
The grounding bars and PGND bars are connected to the same grounding conductor.
6
The earth resistance is smaller than 10 ohms.
7
The OT terminals at both ends of the power cables or PGND cables are soldered or crimped securely.
8
The bare wires and OT terminals at the wiring terminals are tightly wrapped up with the insulating tape or
heat-shrinkable tubes.
9
All screws are fastened. The flat washers and spring washers are mounted. The spring washers are
placed between the flat washers and the screws.
10
The power cables and PGND cables connecting the PDB with the functional modules and the PGND
cables connecting the modules with the grounding bar are all correctly installed and in good contact.
11
The front and back doors are connected to the grounding bolts on the lower enclosure of the cabinet
using 6 mm greenish yellow cables. Two such cables are used for each door.
12
The power cables and PGND cables are bound separately from other cables.
13
Labels are attached at both ends of the power cables and the PGND cables.
14
The plastic cover plate on the top of the terminals of the PDB is installed correctly.
Item
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