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Pad-Mount
Small Power Transformers
75 kVA through 20,000 kVA
5 kV through 46 kV primary voltage
120V through 25 kV secondary voltage
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Pad-Mounted Transformers
Schneider Electric is a recognized market
leader, offering a full range of distinctively
Square D®-designed transformer products such
as the pad-mounted transformer. Like all of
COMPACT
AND
TAMPERRESISTANT
our transformers, it is manufactured in ISOregistered facilities that use the industry's leading manufacturing technology, ensuring products of the highest quality and performance.
At Schneider Electric, we are committed to
excellence. Our pad-mounted transformers are
built and tested to stringent Square D brand
specifications, and meet or exceed applicable
ANSI/IEEE, CSA and NEMA standards.
These transformers may be UL, cUL
or FM labeled upon request.
Medium-Voltage, Liquid-Filled
Pad-mounted, liquid-filled transformers
provide medium-voltage, world-class power
distribution. Pad-mounted transformers use
a choice of either mineral oil or less-flammable
seed-oil based fluid.
For more information about pad-mounted
transformers or other transformers, please visit
www.us.SquareD.com or call 1-888-SquareD.
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Flexibility and Strength
Commercial Applications
Three-phase, pad-mounted transformers
provide compact, tamper-resistant protection
for underground power distribution systems.
Offering flexibility, excellent mechanical
strength and dependability, these transformers
are ideal for commercial applications in public
access areas where safety is a concern.
Pad-mounted transformers are ideally suited
for apartment buildings, schools, hospitals,
shopping centers, commercial buildings and
industrial sites.
These transformers are completely factoryassembled and shipped as one piece. Standard
liquid-filled sizes range from 75 to 5,000 kVA
with primary ratings from 2,400V to 46,000V.
Space-Saving, Protective Design
Meeting modern design requirements for
flexibility, pad-mounted transformers use
a rectangular core and coil design. Designed
to save space and energy, they provide high
efficiency with low operating costs.
Because the bolts, hinges, screws and fasteners
are not accessible in these self-contained units,
their tamper-resistant construction prevents
entry by unauthorized personnel. This construction also eliminates the need for protective
fencing or vaults, allowing for visually pleasing
installation in locations that are accessible to
the general public.
Environmental Information
The sealed-tank construction of pad-mounted
transformers ensures that the gas-plus-oil
volume remains constant within industry
standards.
Certified PCB-free, the transformer insulating
fluid meets or exceeds requirements of appropriate standards. Mineral oil is primarily used
in outdoor applications. When flammability is
a concern, such as with indoor applications,
or in areas of heightened environmental sensitivity where any insulating fluid spill could
require expensive cleanup procedures, lessflammable seed-oil based fluid, a fully
biodegradable, environmentally friendly
dielectric fluid, is the fluid of choice.
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Pad-Mounted Transformer Ratings
75–20,000 kVA
2.5 to 46 kV primary
120°C insulation temperature limit
Temperature rise: 65° C
ISO 9001 registered
Optional UL and cUL certification
Special Design Options
Special sound requirements
Special altitude requirements
Retrofit designs
Higher efficiency requirements
Special ambient conditions
55/65° C rise
Applicable Standards
©2006 Schneider Electric. All rights reserved.
jc
IEEE C57.12.00™
Standard general requirements for liquid-immersed distribution,
power and regulating transformers (ANSI).
IEEE C57.12.34™
Requirements for pad-mounted, compartmental-type, self-cooled,
three-phase distribution transformers; 2,500 kVA and smaller: high
voltage, 34,500 GrdY/19,920 volts and below; low-voltage, 480 volts
and below.
ANSI C57.12.28
Standard for pad-mounted equipment — enclosure integrity.
IEEE C57.12.70™
Standard for terminal markings and connections for distribution
and power transformers.
IEEE C57.12.80™
Standard terminology for power and distribution transformers.
IEEE C57.12.90™
Standard test code for liquid-immersed distribution power, and regulating transformers and guide for short-circuit testing of distribution and
power transformers (ANSI).
IEEE C57.13™
Requirements for instrument transformers.
ANSI/IEEE 386
Separable insulated connector systems for power distribution
systems above 600V.
ASTM D877
Test method for dielectric breakdown voltage of insulating
liquids using disk electrodes.
NEMA AB1
Molded case circuit breakers.
NEMA TR1
Transformers, regulators and reactors.
CAN/CSA-C88-M90
Electrical power systems and equipment.
1-888-SQUARED
www.us.SquareD.com
Schneider Electric – North American Operating Division
1415 S. Roselle Road
Palatine, IL 60067
Tel: 847-397-2600
Fax: 847-925-7500
Document Number 7230BR0401R6/06
6/06