Toshiba Power Supply User manual

ß Mix and Match Modular kVA Sizes
ß Mix and Match New and Existing
Modules
ß Modules Can be in Separate Rooms
ß Simple Maintenance Scheme without
Transfers to Utility Power
ß Sequential Installation and Startup
ß Extended Battery Backup Time
in Blackouts
ß Higher Operating Efficiencies and
Reliability
UNINTERRUPTIBLE POWER SYSTEMS
Isolated-Redundant
UPS Systems

ISOLATED-REDUNDANT UPS SYSTEMS
*UPSISOREDUNDNT060301*
UPS ADJUSTABLE SPEED DRIVES MOTORS CONTROLS INSTRUMENTATION PLC
INDUSTRIAL DIVISION
13131 West Little York Road, Houston, Texas 77041
Tel [phone] Fax [phone]
US [phone] Canada [phone] Mexico 01(800)527-1204
www.toshiba.com/ind
Copyright 3/2006
Available Through:
Isolated-Redundant UPS Module
Oversized Redundant UPS Module
Toshiba’s Isolated Redundant UPS
System offers the ultimate in reliability,
maintainability and availability. This UPS
system delivers maximum design flexibility
that is unmatched by any other configured
UPS design.
An isolated-redundant UPS system allows
the user to never have critical loads
exposed or fed from the utility source, even
during UPS module failures or UPS module
maintenance. The principal behind this
system is that the critical load is divided
into separated, isolated segments, which
means that the failure of one segment
cannot affect the other load segments.
Reliability is maximized and common-
mode failure is minimized!
Each load segment can be a single, modular
UPS system. If a UPS load segment failure
causes a transfer to static bypass, the
static bypass source is another standby
UPS system.
In isolated redundant systems, the
standby UPS system is always ready to
support the critical load since it is on-line
and keeps its own battery plant charged.
A key requirement of this system is that the
standby UPS system must accept a 100% step load with minimal transient voltage. Toshiba’s
design can handle 100% step load without using the batteries and maintaining a less than
5% voltage distortion, making this UPS configuration the right choice for many customers.