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GenPro
Power Services
P.O.
Box 1116
Rapid City, South Dakota 57709-1116
Sales Contact:
Toll Free: 888.861.8984
Ph: 605.341.6160
Fax: 605.341.9791
Contact
Us
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| ZENITH ZTSD DELAYED
TRANSITION SERIES
AUTOMATIC TRANSFER SWITCH |
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Description
When large motors,
uninterruptible power supply (UPS) systems and/or transformers make
up the bulk of the load, delayed transition transfer switches offer
ideal protection.
The ZTSD Series provides an
adjustable time delay in the centered "off" position. This delay
allows motors to coast down and transformers to decay, meaning
inductive loads may be re-energized after transfer with only normal
inrush starting currents.
These switches, which are
strongly recommended by major UPS manufacturers, are ideal for
pumping stations, sewage treatment plants, hospital X-ray equipment
or wherever the load makes a delay desirable. The ZTSD Series allows
a UPS system sufficient time to recognize a power failure and
transfer to batteries, acknowledge the return of power and thereby
reduce any transfer anomalies.
The ZTSD Series incorporates
all the important features of the standard ZTS Series in a unique
design that includes specific operational properties. The
performance, operating capabilities, ratings, UL listings, withstand
current values and available options are identical to those of the
ZTS Series.
Features and Benefits
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Adjustable, time delay in centered "off" position to meet
specific installation requirements
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High
close-in and withstand capability
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Temperature rise test per UL 1008 conducted after overload and
endurance tests in unventilated enclosure - exceeds UL
requirements
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Available in ZTSD (utility-generator), ZTSDU (utility-utility),
ZTSDG (generator-generator) and ZTSDM (manual) configurations
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Mechanically interlocked center-off position for load decay
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Electrically operated, mechanically held by a simple,
over-center mechanism
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Segmented silver tungsten alloy contacts with separate arcing
contacts on 600 amps and above
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Arc
quenching grids, enclosed arc chambers and wide contact air gap
for superior source-to-source isolation on all units
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Control circuit disconnect plug and drive inhibit switch for
safe maintenance
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Components accessible for inspection and maintenance without
removal of the switch or the power conductors
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Mechanical indicator and contact chamber cover designed for
inspection, safety and position designation
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Product Scope
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Ratings 40 to 4000 amperes
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2, 3
or 4 poles
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Open
type, NEMA 1, 3R, 4, 4X and 12
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Available to 600 VAC, 50 or 60 Hz
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Suitable for emergency and standby applications on all classes
of load, 100% tungsten rated through 400 amperes
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UL
1008 listed at 480 VAC
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CSA
C22.2 No. 178 certified at 600 VAC
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IEC
947-6-1 listed at 480 VAC
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Corporate Headquarters
GenPro
Power
Services
2121 Rand Road, PO Box 1116, Rapid City, SD
57709-1116
Ph: 605-341-6160 Fax:
605-341-9791
www.genpropower.com
© 1997-2008 GenPro Power
Services - All Rights Reserved
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