USER GUIDE
PF-2223-1
3-Phase 22.5kW Power System
PF-2223-1-UG-01
Page 5 of 12
June 2015
The Power Shelf slides into a 21-inch OCP rack and is supported in the rack by shelf support brackets. If the
Shelf Support Brackets are not already installed in the rack, follow instructions “Shelf Support Brackets
Installation” on page 5 to install the brackets.
Before the Power Shelf is installed into the rack, Linking Bus Bars are loosely installed on the rear of the
Power Shelf; they are tightened after the Power Shelf is mounted into the rack. Follow instructions
“Linking Bus Bar Installation” on page 5 to install linking bus bars.
Shelf Support Brackets Installation
The weight of the power shelf is supported in the rack by two Shelf Support Brackets. Each bracket is held
in place by four M6 x 12mm self-threading screws.
To Install the Shelf Support Brackets:
1.
Place a Shelf Support Bracket in the correct position in the rack and loosely attach it to the shelf
with four M6 screws.
2.
Place the other Shelf Support Bracket in the correct position in the rack and loosely attach it to the
shelf with four M6 screws.
3.
Torque all Shelf Support Bracket screws to 6.1 N-m (4.5 ft-lbs).
Linking Bus Bar Installation
Linking Bus Bars are installed, but not tightened, to the output power connectors on the rear of the Power
Shelf before it is mounted into the rack. After the Power Shelf is installed in the rack, the other ends of the
Linking Bus Bars are connected to the rack bus bars and their bolts are tightened then. Linking Bus Bars
may be color coded: red for +12V and black for ground.
Caution
If the Linking Bus Bars are color coded, ensure that they are installed on the correct bus
that corresponds with its color.
To Install Linking Bus Bars to the Power Shelf:
1.
With four M8 x 15mm SEMS bolts, install a Linking Bus Bar to an output power bus bar on the
Power Shelf, but do not tighten the bolts. These bolts will be tightened later after the Power Shelf
is mounted into the rack.
2.
Install the remainder of Linking Bus Bars to the bus bars on the Power Shelf, but do not tighten the
bolts. The Power Shelf is now ready to be installed into the rack.
Power Shelf Installation
After the Shelf Support Brackets are installed into the rack and the Linking Bus Bars are installed on the
rear of the Power Shelf, it can be installed into the rack.
WARNING
To prevent risk of electrical shock to personnel, ensure that power is not activated inside
the rack while installing equipment. Use a DMM to test any potentially live wires and
verify that electrical power is turned off to the rack.
