Northern Telecom Meridian 1 PC Console Interface Unit, Installation And Maintenance Manual

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Installing the hardware Page 21 of 220
Meridian Companion Installation and Maintenance Guide
Figure 8 : RPI unit
ATTENTION!
The RPI unit should have the dc backup power supplied by
a UL listed UPS.
The UPS should have an output voltage rating of 44 to 50 V dc,
with a maximum fault current limit of 6 A to protect the RPI’s
output wiring. Otherwise, it may be necessary to use class 1
wiring.
ATTENTION!
The RPI units must always be installed inside a building.
The ac outlet powering the RPI unit should be installed near the
equipment and should be easily accessible.
The length of the RPI cord, from the outside surface of the unit to
the plug, should be a minimum of 4
1
/
2
ft and a maximum of 15 ft.