Chapter 4 - Power Supplies; Introduction; Features; Dimensions And Weight - Nortel Meridian 1 Option 11C Compact Technical Reference Manual

Chapter 4 — Power supplies

Introduction

Features

Dimensions and weight

Power Supply features

Voltage

This chapter describes the Meridian 1 Option 11C Compact NTMW11AC
Power Supply unit and the operation of the Power Fail Transfer Unit (PFTU).
The NTMW11 Power Supply measure approximately 12.5 in. (305 mm)
high, 5 in. (127 mm) wide and 10 in. (245 mm) deep, and weighs
approximately 12 lb (5.5 kg).
The NTMW11 Power Supply has the following features:
• A current limiting circuit which limits the surge of current on the input
line when the system is first switched on.
• Generation of a system line transfer signal.
• Differential mode and common mode EMI filtering of input.
The NTMW11 Power Supply provides +5.1, +8.5, +15, -15V, -150V, -52V
and filtered -48V.
There is a 1.0 second start-up delay on the +5V rail.
Meridian 1 Option 11C Compact
Page 39 of 136
Technical Reference Guide