Whether you need advanced design and high performance built to spec or a cost-efficient solution for multiple applications, ELSCO is a leading provider of power transformers for every commercial or industrial need. We carry two types of power transformers for you to consider.

What’s the difference between the different types of transformers?

ELSCO Transformer Options

ELSCO
Transformer Options

What’s the difference between the different types of transformers?

Whether you need advanced design and high performance built to spec or a cost-efficient solution for multiple applications, ELSCO is a leading provider of power transformers for every commercial or industrial need. We carry two types of power transformers for you to consider.

Benefits of Dry Type Transformers

ADVANCED DESIGN

100% Copper-wound, round coil, disc wound, slotted comb with sheet wound secondary, step lap mitered core with lower flux density..

HIGH EFFICIENCY PERFORMANCE

Exceeds Energy Star and DOE energy efficiency standards , and meets the latest NEMA, ANSI and IEEE standards.

COST EFFECTIVE

Reduces utility and maintenance costs due to increased energy efficiency and superior design.

QUIET OPERATION

The combined effect of our precision hand-wound coils, completely varnishing the whole unit, and the step lap mitered core with lower flux density ensures minimal noise and vibration once installed.

EXTENDED LIFE

Superior quality materials, superior design and expert craftsmanship deliver long-standing performance.

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Benefits of Padmount Transformers

PROVEN

Provide safe, reliable power output in public space.

COST-EFFICIENT

Lower costs for installation upfront and promote increased savings.

FLEXIBILITY

New, reconditioned, or custom-built options are available for every application.

CUSTOMIZABLE

From one to 1000 units, we build to spec for commercial, utility or retail locations.

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Dry Type

  • Typically dry types go indoors due to the high flashpoint, non-flammable Nomex insulation.
  • Dry types can also be installed outdoors in a specially designed outdoor enclosure to keep any blowing rain/wind/snow out of the enclosure.  Our chief engineer always says a dry type transformer installed outdoors is only as good as the enclosure it’s in.
  • Can be either round coil or rectangular coil – round coil is a better design for cooling and short circuit strength.
  • Can be either disc or layer wound – disc wound is better for cooling.
  • Degree C rise can be either 80 degree C, 115 degree C, or 150 degree C rise. 80 degree C runs the coolest and lasts the longest because insulation breakdown is what shortens the life span of a transformer, which is almost always caused by heat either thru overloading or harmonics.
  • Standard dry type warranty is one year – ours is an industry best 5 years.
  • Dry type transformers are typically part of a line up with HV gear on one side and LV breakers on the other.
  • Elsco can do custom bus work for direct plug and play retrofit.

Padmount

  • Green color.
  • Lockable doors up front.
  • Cable in from underneath the front compartment.
  • HV & LV bushings both on the front side of the tank behind the lockable doors and separated by a steel HV-LV barrier.
  • Tamperproof and stand alone (not part of a line-up).
  • Outdoors applications.  You will see then behind restaurants or malls.

Unit Substation

  • Gray color
  • HV & LV bushings on 180 degree opposite sides. Front side is where the gauges are. HV on left side and LV on complete opposite right side.
  • Will have either full height terminal chamber, partial height air terminal chamber or throat covering the bushings.
  • Usually part of a line-up with HV & LV gear on either side.
  • Can be stand alone.
  • Can be either outdoors application or indoor application with high flashpoint, less flammable fluid.

Station Type

  • Gray color
  • HV bushing top or cover mounted.
  • LV bushings can be either top/cover mounted or side mounted.
  • Outdoor applications.
  • Due to exposed live parts, should be behind a lockable fenced in area.
    Typically stand alone.

For more information about ELSCO Transformers visit

Benefits of Pre-Owned Transformers

We maintain an updated inventory of both pre-owned copper- wound dry type and oil filled transformers. All units undergo a thorough certification process before we make them available for rent or purchase. This is a cost-effective way for your organization to access a reliable unit for a shorter period or temporary need.

In the event of an emergency

Whether you need a dry type transformer or a padmount transformer
in the event of an emergency, we’ve got you covered 24/7.

To access our emergency replacement transformer program.

Submit RFQ