HP ProLiant DL170e HP ProLiant DL170e G6 Server Maintenance and Service Guide - Page 148

Power bus bar system

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Power bus bar system The HP ProLiant DL170e G6 server uses the copper power bus bar system for power transferring, which efficiently reduces the power loss during the power transferring process from the power supply units to the system boards. The power bus bar link system consists of the following elements: • Big C bus bar pair: Transfer power from the bottom power backplane to the top power backplane • Bus bar links: Transfer power from the top power backplane to the top midplane • Small C bus bar pair: Transfer power from the top midplane to the bottom midplane The following figure shows the power bus bar link system structure with reference to the top/bottom power backplanes and top/bottom midplanes: Figure 165 Power Bus Bar Link System Structure Item 1 2 3 Description Small C bus bar pair (between the top midplane and the bottom midplane) Bus bar links (between the top midplane and the top power backplane) Big C bus bar pair (between the top power backplane and the bottom power backplane) To remove the bus bar links: Before removing the bus bar links, take steps as described in the section of "Pre-installation procedure". 1. Remove the power supply units as described in the section of "To remove the power supply". 2. Press the semi-circle shaped end of the plastic bus bar cover to release the bus bar cover from the midplane assembly. 3. Route up the semi-circle shaped end of the plastic bus bar cover and remove it from the hood bracket. Removal and replacement procedures 148

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Removal and replacement procedures
148
Power bus bar system
The HP ProLiant DL170e G6 server uses the copper power bus bar system for power transferring,
which efficiently reduces the power loss during the power transferring process from the power supply
units to the system boards.
The power bus bar link system consists of the following elements:
•
Big C bus bar pair: Transfer power from the bottom power backplane to the top power
backplane
•
Bus bar links: Transfer power from the top power backplane to the top midplane
•
Small C bus bar pair: Transfer power from the top midplane to the bottom midplane
The following figure shows the power bus bar link system structure with reference to the top/bottom
power backplanes and top/bottom midplanes:
Figure 165
Power Bus Bar Link System Structure
Item
Description
1
Small C bus bar pair (between the top midplane and the bottom midplane)
2
Bus bar links (between the top midplane and the top power backplane)
3
Big C bus bar pair (between the top power backplane and the bottom power
backplane)
To remove the bus bar links:
Before removing the bus bar links, take steps as described in the section of “Pre-installation
procedure”.
1.
Remove the power supply units as described in the section of ”To remove the power supply”.
2.
Press the semi-circle shaped end of the plastic bus bar cover to release the bus bar cover from
the midplane assembly.
3.
Route up the semi-circle shaped end of the plastic bus bar cover and remove it from the hood
bracket.