Ps Office Dc Power Supply Unit; General Description - Tadiran Telecom Coral IPx Office Installation And Hardware Reference Manual

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Coral IPx Office Installation Manual

PS Office DC Power Supply Unit

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General Description

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The PS Office DC card's component side power supply unit provides internal
operating voltages for the Coral IPx Office main unit and expansion unit. The PS
Office DC operates from a nominal input of –48VDC, typically supplied by an
external 48VDC rectifier or stationary battery plant. Actual input may vary from
–40VDC to –56VDC, allowing operation:
From a battery power source while the batteries are charged at an equalized
charge rate
Under power failure, until the batteries are completely discharged
PS Office DC Front Panel
Figure 7-6 displays the front panel of the PS Office DC. The components positioned
on the front panel are described in the following table:
Feature
Power Switch
Handle
Right and Left
Removable Screws
Description
Turns the unit ON or OFF.
WARNING!
Contact with live wires in the power supply unit could
cause shock, burn, or death. Do not remove the power
supply from the IPx Office system when the power
switch is turned ON and power is connected.
Used to pull the unit out of the card cage.
Used to secure the unit to the cage. These screws also
ground the unit to the cage and safeguard the unit against
malfunction.
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Power Supply