SAG581126000
System Application Guide
Spec. No. 581126000 (Model 700
NVBA
)
Issue AD, November 23, 2009
Page 1 of 123
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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.
