UNICLAD Transformers ( RED )
COIL SEALING AND CLADDING
Each coil follows a carefully controlled, six-stage process to produce the desired level of protection. This proprietary process includes oven drying to remove moisture, vacuum-pressure impregnation with a flexible varnish, and coil end sealing with a resin mixture.
A final outer-cladding mixture of varnish, resin and silica is applied to the entire coil assembly to provide a final protective seal against the environment.

TRANSFORMER FEATURES
RANGE
- Up to 15 MVA
- 35 kV voltage class
- 150 kV BIL
LOADING
- Designed to deliver rated current and MVA in all tap positions
SERVICE
- Indoor
BASIC IMPULSE LEVEL (BIL)
- Per ANSI standard
COILS
- Aluminum or copper conductor
- Circular construction
IMPEDANCE
- ANSI standard
PAINT
- ANSI 61 enamel on phosphatized surface
NAMEPLATE
- Metalized mylar
OTHER
- Provisions on base for lifting
- jacking and skidding
- stainless steel ground pads
OPTIONAL FEATURES
- Reconnectable windings
- Non-standard impedance
- Epoxy paint in your choice of color
- Fan cooling for increased MVA
- Available at 150ºC rise
- Outdoor, NEMA 3R enclosure
- TENV – For harsh environment
- Temperature Monitoring – Choose from coil winding temperature sensors and indicators, gauges or temperature controllers
- Terminations – Copper or aluminum bus with NEMA hole patterns and optional plating, flexible bus connection provisions also available
- Special flanged throats or custom air terminal chambers
UNICLAD® BENEFITS
- Impressive 3-year warranty
- Circular design above 750 kVA
- Copper conductor - aluminum available
- 1150ºC rise - 800ºC rise optional
- 2200ºC insulation class
- Distribution class kV BIL ratings
- 15 percent overload capacity without fans at 115º rise
- Self-extinguishing internal and external arc
- Partial discharge free to 120%
- Water submersion 24 hours
- Thermal shock - no cracks
- Humidity 100% for 48 hours
- Vibration 1.5 Gs
- Shock 30 Gs
PRODUCT RANGE
- Dry Type 15 MVA, 35 kV
- Uniclad® (encapsulated coils) – 15 MVA, 35 kV
- Liquid Filled - 300 MVA, 230 kV
- LTC Transformers - 300 MVA, 230 kV
- Voltage Regulators - 3-phase, 46 kV
- Drive Isolation – 50 MVA, 138 kV
- Traction Duty – 50 MVA, 138 kV
- Air Core Reactor – 15 kV


PRODUCTION TESTS
Routine in-house tests per ANSI C57.12.91 include:
- Ratio
- Polarity
- Phase Relation
- No-Load Loss
- Excitation Current
- Impedance
- Load Loss
- Applied Voltage
- Induced Potential
- Resistance
Witness testing is offered
and arranged according to
your schedule
TYPICAL INDUSTRIES
- Paper Mill
- Transit
- Steel Mill
- Mining
- Hospital
- Computer Center
SELECTED CUSTOMERS
- Alcoa
- PPG Industries
- Powell Electric
- Eaton Corp.
- Impulse NC, Inc.
- Long Island Railroad
- Consolidated Papers
- Georgia Pacific
- New York City Transit Authority
- GE Plastics
- Unocal Oil & Gas
- Reynolds Metals Co.
- Occidental Chemical Corporation
- Grand River Dam Authority
- City of Norfolk
- GTE Data Services
- Pratt & Whitney
- Westvaco Corp.