Emerson ACTURA Flex 48330 - Chapter 1 System Description

Chapter 1 System Description 1
ACTURA Flex 48330 Power System User Manual
Chapter 1 System Description
1.1 Abbreviation
AC Alternate Current
DC Direct Current
SCU Standard Controller Unit
BCU Battery Connection Unit
CSU Central Supervision Unit
HVSD High Voltage Shutdown
MCB Miniature Circuit Breaker
APFC Active Power Factor Correction
MFU Multi-Function Unit
1.2 Introduction
The ACTURA Flex 48330 Power system consists of 50A rectifiers, Control Unit,
Multi-Function Unit (MFU), rectifier shelf and BCU (optional).
The product is used in base station, small exchange station, satellite
communication, data communication, and so on, with a strong adaptability to power
network fluctuation.
This system is used as a power supply for telecom equipment with system nominal
voltage of -48V and positive terminal earthed.
1.3 Features
The DC power system is easy-to-operate, easy-to-install and easy-to-maintain. Its
main features are:
 Rectifier uses APFC technology and therefore its PF is up to 0.99;
 Wide AC input voltage range of 85~290V;
 Rectifier efficiency is at least 90%;
 Extra low EMI of rectifier and excellent EMC performance;