Carte de batterie de résérve flottant
48 Vdc Input to -48 Vdc

The Plug-in Power Supply Card operates from a floating input of 48Vdc and delivers a -48Vdc output to power either a Teleline Isolator 5-card Shelf or the 8-card Shelf.

The Plug-in Power Supply Card (751319MC) will not work with older Model shelves, whose Model number ends in /13.

Product Number CLEI Code Description Download Documents
751319MC NPUPAAAAAA Plug-in Power Supply Card Floating 48 Vdc Input to -48 Vdc Output Specifications Installation Guide

Carte de secours de batterie Floating 48 Vdc Input to -48 Vdc Sortie

Two Plug-in Power Supply Cards may be installed in the 5- or 8-card Teleline shelf for redundancy. Each card is capable of providing the power required by a fully loaded shelf. When two cards are available, the load is shared by the two cards. If one of them fails, the other one takes over the full load without interruption of power.


  • The card’s input voltage is 48Vdc. Power inputs are isolated from Station ground.
  • The card provides 1500Vdc isolation between the supply input and backplane output
  • For redundancy, insert two plug-in power supply cards in the shelf. If one card fails, the other takes over the full load
  • A “Power In” LED and a “Power Out” LED allow easy assessment of power supply functionality

The plug-in power supply can be housed in the 5-card Shelf (751112/15), the 8-card Shelf (751109/15), or in many of our High Voltage Interface (HVI) pre-configured units.


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