Install and Wire Telephone Power Supply
Important Warning for 1145B Power Supply
SI Installation and Upgrades
559
June 2004
Power Up and Test the Power Supply
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The following table describes the meaning of the power supply LEDs when lit.
1
Connect the AC power cord to the power supply and route the cord to an appropriate AC outlet
using the clips provided on the unit.
NOTE:
A maximum of four power supplies can be powered from one dedicated 100V-120V,
50/60 Hz, 20 amp feeder or 200V-240V, 50/60 Hz, 10 Amp feeder. Use only unswitched
receptacles.
2
Plug the cord into the outlet. This powers up the power supply.
3
Check AC operation of the 1145B Power Supply by monitoring the LEDs:
PASS: Green and yellow LEDs at front of the unit should be lit together. Green means the power
supply is providing power. Yellow means the battery is being charged. After the battery reaches
full charge (maximum of twenty hours), the yellow LED should go out.
FAIL: If either green or yellow LED is not lit after powering up, check the connections. Test the
AC outlet. If power is available and the AC power cord and connections are good, replace the
power unit.
4
Disconnect the AC plug on the power supply, this activates the DC supply.
5
Check DC (battery back-up) operation of the 1145B Power Supply by monitoring the LEDs:
PASS: The red and green LEDs should be lit together. Red means the power supply is on battery
back-up.
FAIL: If either green or red LED is not lit after disconnecting AC power, check the connections.
If the connections are good, replace the power unit or batteries.
6
Reconnect AC power to the power supply.
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Wire the 1146B Power Distribution Unit
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Wire endpoints to the1146B while power from the 1145B is on. A red LED lights if its associated circuit
is connected to shorted wiring or to a shorted terminal.
1
Install cross-connect jumpers to wire from the unit (the label shows polarity) to Pins 7 and 8 of the
appropriate information outlet. Route the wires through the clip provided on the unit. If a red LED
is on, see
Reset LEDs on Power Distribution Unit
on page 560. See
Figure 223, Typical Wiring to
a Terminal,
on page 560.
LED Color
Meaning
Green
Power Supply is providing power
Yellow
Battery is charging
Red
Power Supply is on battery reserve
