Attention:
The bus bar shield must be correctly reinstalled over the -48 V dc return bus bars to
protect against injury while servicing the power distribution panel.
5.
Ensure that the following steps are performed when connecting the dc power source.
a.
At -48 V dc power source, turn off any -48 V dc power sources that will be connected to the
power distribution panel.
b.
After the -48 V dc power sources are turned off, be sure there is a tag or label over the power
source switches or fuses (lock-out/tag-out) to indicate that the power source is turned off
intentionally.
Note:
Ensure that any oxidation on the copper bus bars is removed.
c.
If this is a raised-floor installation and you are working at the back of the rack, route the power
cables up the rack's right side.
d.
Ensure that the external -48 V dc power cable is connected correctly to the -48 V dc bus bar.
e.
Ensure that the external -48 V dc return cable is routed correctly and installed on the return bus
bar.
1
-48 V dc power cable and return power cable
2
Power distribution panel
3
Front of rack
4
-48 V dc power cable and return power cable
Figure 15. Routing the power cables
20
Installing into a rack
Summary of Contents for 0551
Page 1: ...Power Systems Rack rack features and installing systems or expansion units into a rack ...
Page 2: ......
Page 3: ...Power Systems Rack rack features and installing systems or expansion units into a rack ...
Page 8: ...vi Installing into a rack ...
Page 12: ...2 Installing into a rack ...
Page 34: ...24 Installing into a rack ...
Page 118: ...108 Installing into a rack ...
Page 126: ...116 Installing into a rack ...
Page 130: ...120 Installing into a rack ...
Page 148: ...138 Installing into a rack ...
Page 164: ...154 Installing into a rack ...
Page 174: ...3 Close the front rack door 164 Installing into a rack ...
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Page 182: ... Printed in USA ...