Zte ZXCBTS M190T, Руководство по установке

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Chapter
11 Hardware
Installation Check
11-3
2. The PGND cable of the micro-BTS adopts the olivine or yellow copper-core
cable with the cross-section area of 35mm
2
, which is connected to the indoor
PGND copper busbar reliably. The GND/BGND cable adopts the black
copper-core cable with the cross-section area of 25mm
2
. The -48V power cable
adopts the blue copper-core cable with the cross-section area of 25mm
2
. All
these cables are laid straight and connected reliably.
3. The grounding bus wire is directly connected to the indoor grounding busbar.
The cross-section area of the grounding bus wire is more than 50mm
2
.
4. Each terminal of the grounding copper busbar is connected with only one
device.
5. PGND cables and AC neutral cables are laid separately.
6. AC neutral cables are grounded independently in the power room.
7. The indoor grounding resistance is less than 5 ohm.
8. Each cable is marked correctly and clearly.
9. Power cables are not bundled with other cables but separately.
10. The surplus part of the grounding and power cables are cut.
11. The copper lugs at both ends of power cables and grounding cables are welded
or crimped well.
12. There is no joint (between two pieces of cables) for a piece of power cable or
grounding cable.
13. The grounding copper busbar is insulated from the wall, and the grounding path
is as short as possible.
14. The primary power supply is connected to the power terminal on the shelf
correctly.
15. The opening lug of power cables are welded or crimped firmly.
16. Power cables are well contacted with the copper lugs and sealed with adhesive
tape. The copper lugs are reliably connected with the power cabinet or BTS
shelf.
17. The power terminals on the top of the shelf are equipped with insulation tubes.
18. No power cable, grounding cable, trunk cable or RF cable is broken.