Cutler Hammer, Div of Eaton Corp Distribution Transformers Features and Benefits
Transformers
Distribution Transformers
9.5
Mini–Power Centers
Product Description
Note: The following pages
provide listings for most standard
transformer ratings and styles.
For other ratings or styles not
shown, or for special enclosure
types (including stainless steel),
refer to Eaton.
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Encapsulated design
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Suitable for indoor or
outdoor applications
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180°C insulation system
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115°C rise standard;
80°C rise optional
Application Description
A mini–power center
combines three individual
components into one NEMA
Type 3R enclosure: a main
breaker, an encapsulated
single-phase (Type EP) or
three-phase (EPT) dry-type
transformer, and a secondary
distribution loadcenter with
main breaker. Interconnecting
wiring is completed at the
factory. Mini–power centers
are used wherever there
is a 480 volt or 600 volt
distribution system and
loads requiring 208Y/120 volt,
three-phase or 120/240 volt
single-phase. Typical
installations include:
●
Industrial plant
assembly lines
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Plant expansions
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Test equipment
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Temporary construction
site power
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Sewage disposal plants
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Warehouses
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Car washes
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Parking lots
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Commercial buildings
Contents
Description Page
Motor Drive Isolation Transformers . . . . . . . . . . . . . . . . . . . 239
Mini–Power Centers
Standards and Certifications . . . . . . . . . . . . . . . . . . . . . . 248
Catalog Number Selection. . . . . . . . . . . . . . . . . . . . . . . . 249
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Technical Data and Specifications . . . . . . . . . . . . . . . . . . 251
Totally Enclosed Non-Ventilated Transformers . . . . . . . . . . . 252
Class I, Division 2, Groups C and D Transformers . . . . . . . . 255
Open-Type Core and Coil Assembly Transformers . . . . . . . . 258
Marine Duty Transformers . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Buck-Boost and Low Voltage Lighting Transformers . . . . . . 272
Medium Voltage Distribution Transformers . . . . . . . . . . . . . 301
Features, Benefits and Functions
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60 Hz operation
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Indoor/outdoor, NEMA 3R
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Primary main breaker
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Secondary main breaker
(Type BR plug-in and Type
BAB bolt-on feeder
breakers not included)
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All live parts enclosed
for personnel safety
●
Cover is hinged to prevent
removal and can be
padlocked
●
Cores are grounded with
a copper lead
●
Ground bar is supplied
to permit grounding of
individual secondary
circuits
●
Neutral bar is grounded
to case
●
Feeder circuits can be
easily added or changed
using Type BR plug-in
breakers and Type BR plugin and Type BAB bolt-on
●
Suitable for service
entrance
●
Wide range of
configurations available:
●
Aluminum windings
and plug-in loadcenter
chassis standard
●
Copper windings and
plug-in loadcenter
chassis also available
●
Copper windings and
bolt-on loadcenter
chassis available
●
Short-term overload
capability as required
by ANSI
●
Meet NEMA ST-20
sound levels
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Volume 2—Commercial Distribution CA08100003E—December 2010 www.eaton.com 247
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9.5
Standards and Certifications
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UL listed
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CSA certified
Industry Standards
All Eaton dry-type distribution
and control transformers are
built and tested in accordance
with applicable NEMA,
ANSI and IEEE Standards. All
600 volt class transformers
are UL listed unless
otherwise noted.
Seismically Qualified
Eaton manufactured dry-type
distribution transformers
are seismically qualified
and exceed requirements of
the Uniform Building Code
(UBC), International Building
Code (IBC) and California
Code Title 24.
Transformers
Distribution Transformers
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248 Volume 2—Commercial Distribution CA08100003E—December 2010 www.eaton.com
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