Emerson SAG581126000 Manuel D’Utilisation

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SAG581126000 
System Application Guide 
Spec. No. 581126000 (Model 700
NVBA
Issue AD, November 23, 2009 
 
Page 1 of 123 
 
This document is property of Emerson Network Power, Energy Systems, North America, Inc. and contains confidential and proprietary information owned by Emerson Network Power, Energy 
Systems, North America, Inc.  Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited. 
SYSTEM OVERVIEW
 
Description: 
+24V DC @ up to 4000 amperes Power System. 
This power system is designed to power a load while charging a negative grounded 
battery.  This power system is capable of operating in a batteryless installation or off 
battery for maintenance purposes.  The power system is designed for operation with the 
negative output grounded. 
The N
ET
S
URE
™ 700
NVBA
 DC Power System is a complete integrated power system 
containing rectifiers (PCUs), converters, intelligent control, metering, monitoring, and 
distribution.  This power system consists of the following components. 
•  Distribution Cabinet 
The system always includes a minimum of one Distribution Cabinet (one per bay), 
which provides DC distribution through fuses and/or circuit breakers. 
Four different sizes of Distribution Cabinets may be ordered to accept from one (1) to 
four (4) Distribution Bus Panel assemblies.  A variety of Distribution Bus Panel 
assemblies are available that provide combinations of load distribution, battery 
distribution, low voltage load or battery disconnect, manual battery disconnect, and 
dual voltage load distribution for use with -48V converters.  The Distribution Cabinet 
is factory mounted in the relay rack specified when ordered. 
Most of the distribution panels accept either TPS/TLS-type fuseholders or Bullet 
Nose-type circuit breakers.  TPH-type fuses and GJ/218-type circuit breakers are 
also available, in ratings up to 600 amps. 
•  Meter-Control-Alarm (MCA) Assembly 
The system contains one MCA.  The MCA 
controls the operation of the Rectifier 
Modules (PCUs).  The MCA also provides 
power system control, metering, 
monitoring, and alarm functions. 
•  Module Mounting Assembly 
The system contains one or more Module 
Mounting Assemblies (one per bay), each 
of which houses Rectifier Modules (PCUs) 
and optional DC-DC Converter Modules.  
Refer to PD588705100 (PD588705101, 
PD588705102, PD588705103, 
PD588705104) for more information. 
•  Rectifier Modules (PCUs) 
The system contains Rectifier Modules 
(PCUs), which provide load power, battery 
float current, and battery recharge current 
during normal operating conditions.  Refer 
to PD588705100 (PD588705101, 
PD588705102, PD588705103, 
PD588705104) for more information.