Uni-CastII

Cast Transformers112.53,000 kVA2.5V through 46 kV primary voltage120V through 600V secondary voltage

SD_UniCastII 6/29/06 2:46 PM Page 1

UNPARALLELED RELIABILITY

FOR CLEAN ENVIRONMENTS

Uni-Cast II Transformers

Schneider Electric is a recognized market

leader, offering a full range of distinctively

Square D-designed transformer products such

as the Uni-Cast II transformer. Like all of our

transformers, it is manufactured in ISO-regis-

tered facilities that use the industrys leading

manufacturing technology, ensuring products

of the highest quality and performance.

At Schneider Electric, we are committed to

excellence. Our Uni-Cast II 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, Cast-Coil Design

Uni-Cast II is a medium-voltage, cast-coil,

world-class distribution transformer. Cast-coil

transformers are designed to meet the demands

of higher operating voltage systems and extreme

environments. In fact, no other transformers

come close to the performance of Square D

premium cast-coil designs for severe operating

conditions where efficiency and dependability

are crucial.

For more information about Uni-Cast II

transformers or other products, please visit

www.us.SquareD.com or call 1-888-SquareD.

SD_UniCastII 6/29/06 2:46 PM Page 2

Ultimate Reliability

Uni-Cast II cast-epoxy unit substation-typetransformers are particularly suited for applica-tions requiring a dry-type transformer withsuperior performance characteristics. Thesetransformers provide the rugged durabilityneeded for harsh environments where chemicalfumes, dust or vibration may be present.

Superior Design

The Uni-Cast II construction features LV coilshermetically sealed in epoxy. They are woundwith epoxy pre-impregnated insulation. Afterthe coils are completed, they are baked to drythe moisture from the windings and cure theepoxy pre-impregnated insulation. This curingprocess binds the coils together to form solidwinding blocks. The ends of the coils are thensealed with epoxy for added protection.

The high-voltage coils are cast in epoxy in amold, using computer-controlled mixing andcasting process that ensures the absence ofvoids. The epoxy used in the casting process ismineral-filled epoxy that is UL-approved. Themineral-filled epoxy has been proven toenhance pure epoxy, increasing its thermal con-ductivity, mechanical strength, arc resistanceand adhesion to the conductor, as well aschanging its coefficient of thermal expansion tobe closer to that of the conductor material. Thewindings are also fiberglasss reinforced to pro-vide additional mechanical strength.

The core is manufactured from high permeabil-ity, cold-rolled, grain-oriented, silicon steel,utilizing a step-lap mitered core construction toensure optimum performance and minimalsound levels. Magnetic flux densities are keptwell below the saturation point.

Applications

Offered with round and oval core and coils,Uni-Cast II transformers provide the utmostspace-saving design.With superior dielectriccapabilities, Uni-Cast II transformers are thetransformers of choice for extreme applicationsrequiring the ultimate in reliability. Cost-efficient, they also offer quick installations, lowoperating costs and minimal maintenance.

Environmental Information

While intended for relatively clean environ-ments, the Uni-Cast II transformer is alsoreliable in harsher environments.

Using no fluids, the Uni-Cast II transformerposes no risk of fire or explosion. It is alsomoisture-proof and chemical-resistant. Its solidinsulation system is partial discharge-free (lessthan 20PC @ 120% operating voltage). Thetransformer also requires no special wastedisposal considerations.

When long-term dependability is a must, Uni-Cast II transformers are ideal, serving as excel-lent replacements for PCB-filled transformers.

SD_UniCastII 6/29/06 2:46 PM Page 3

Uni-Cast II Ratings112.53,000 kVA (fan cooling allows higher kVA ratings)Primary voltages: 2.5 to 46 kV Primary BIL: up to 250 kVSecondary voltages: 120V through 600VSecondary BIL: up to 30kVTemperature rise: 80/115 CISO 9001 registeredOptional UL and CSA certification

Special Design OptionsSeismic qualificationsSpecial sound requirementsSpecial altitude requirementsRetrofit designsHigher efficiency requirementsSpecial ambient conditions

Applicable StandardsIEEE C57.12.01 Standard general requirements for dry-type distribution and powertransformers including those with solid-cast and/or resin-encapsulatedwindings.ANSI C57.12.50Requirements for ventilated dry-type distribution transformers,1500 kVA single-phase and 15500 kVA three-phase, with high-voltage601-34,500 volts, low-voltage 120600 volts.ANSI C57.12.51Requirements for ventilated dry-type power transformers, 501 kVA and larger three-phase, with high-voltage 601-34,500 volts, low-voltage208Y/120-4160 volts.ANSI C57.12.55 Conformance standard for transformers dry-type transformers used in unit installations.IEEE C57.12.59 Guide for dry-type transformer through-fault current duration (ANSI).IEEE C57.12.70 Terminal markings and connections for distribution and power transformers.IEEE C57.12.80Standard terminology for power and distribution transformers (ANSI).IEEE C57.12.91 Test code for dry-type distribution and power transformers.IEEE C57.96Guide for loading dry-type distribution and power transformers (ANSI).IEEE C57.124-1991 Recommended practice for the detection of partial discharges and themeasurement of apparent charge in dry-type transformers (ANSI).

Document Number 7320BR0401R6/06 6/06

Schneider Electric North American Operating Division

200

6 Sc

hnei

der E

lect

ric. A

ll rig

hts

rese

rved

. jc

1415 S. Roselle RoadPalatine, IL 60067Tel: 847-397-2600Fax: 847-925-7500

1-888-SQUAREDwww.us.SquareD.com

SD_UniCastII 6/29/06 2:46 PM Page 4