Chapter 5 Power Supply System Installation
5-5
Connect one end of the -48V grounding cable (black, 16 mm2) to the GND
wiring terminal on the filter of the cabinet, and the other end to the GND busbar
of the DC distribution cabinet.
Connect the Protection Earth wire (PE) (yellow green, 25 mm2): one end is
connected to the PE wiring terminal on the P power supply of the cabinet, and
the other end to the PE busbar of the DC distribution cabinet.
3. Intra-module cabinet cascading
In the same module, the GND wiring terminals of each cabinet should be
connected with each other via a shorted cable.
4. Precautions for connecting power cables
While fixing the lug at one end of the DC distribution frame, add the flat washer
and spring washer to make sure that the lug is reliably fixed and that the cable
and wiring bar are in good contact to minimize the contact resistance. For details,
see Fig. 5.3-4.
2
－
Plain washer
3
－
Nut
4
－
Bolt
5
－
Cable
1
－
Copper bar
6
－
Spring washer
Fig. 5.3-4 Connecting Power Cable (1)
When installing lugs, if two or more cables need to be installed on one wiring
post, the lugs should be crossed or installed in a back-to-back way, instead of
being overlapped. If they must be overlapped, they should be bent into 45
o
or
90
o
before installation. Note that the big lug should be put under the small one.
It is recommended to adopt this method in all the places where the lugs need to
be installed. For details, see Fig. 5.3-5.
Summary of Contents for ZXC10 BTSB I1
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