2 Introduction
2.1. General Information
Power Plants from APC have unique features that make them easy to install, maintain, and upgrade. The rectifier units are modular and truly “hot-pluggable” into the shelf assembly without any separate ac wiring. All system settings are made from the system control unit that provides monitoring and control functions for each component of the system as well as alarm listings for system diagnosis and maintenance.
The APC Model MX28B is a modular stand-alone + 24 Vdc power plant. It is configurable in such a manner that it will support most typical applications within the specified current ranges (400 amperes) without special application engineering or assistance. Distribution is included for up to 24 plug-in circuit breakers. These circuit breakers can be 1 to 100 amps, with 60-100 amp breakers requiring two positions and a circuit breaker adapter kit. An optional low voltage disconnect (LVD) can be provided on either the battery or the load side. An MX28B is shown in Figure 2.1-1. A system wiring diagram is shown in Figure 2.1-2.
Figure 2.1-1 MX28B-400 +24 Vdc Power Plant (with circuit breaker cover removed)
MX28B400 +24 VDC User’s Manual | Page 2 |
