Welcome to the Jenstar Transformer Website. 
 
"Jenstar have been manufacturing Transformers for over 35 years. We stock
thousands of standard range transformers and can make non standard, even
one- offs, where many of our competitors cannot. Whatever your transformer
requirements, we are happy to offer a no obligation quote to meet your needs"

Jenstar Type ES.
 

Many times over the years we have been asked by customers

"What does ES stand for ?".
Originally it was shorthand for :

EPOXY RESIN ENCAPSULATED, SILICA SAND FILLED, HEAVY DUTY,
METAL CASED, NON-VENTILATED, AIR COOLED TRANSFORMERS.

After over 35 years and 600,000 + units in service, ES could now be said to stand for :-

 
 

ES

Every Size 50VA - 100kVA
ES Ever Sure 5 year Guarantee
ES Extra Strong The toughest
ES Extra Small Just compare dimensions
ES Extra Special Thousands of variations
ES European Standards We can meet all standards
ES Ex-Stock Hundreds ex-stock
ES Every Situation Std. IP54 - Weatherproof IP65
ES Excellent Service We offer technical advice free
ES Extra Savings Reasonable price and very efficient
ES Exceptionally Safe Think Ahead!!
   
  • A transformer correctly specified and designed to the standards is expected to safely supply its' rated continuous kVA capacity unattended for 20 years +
  • This is where the Jenstar Type ES non-ventilated, epoxy resin encapsulated, industrial transformer design is far Superior to the competition who offer an exposed core / coil design in cases which necessarily have ventilation openings for air to enter and exit while cooling the transformer.
  • Can open windings in cases with large air ventilating openings rated IP22 or less taking in unfiltered air with its dust, contaminants, and humidity be expected to work safely for over 20 years?  Having been supplying our ES design for over 35 years worldwide, Jenstar knows that a transformer core/coils encapsulated in epoxy resin in a heavy duty steel case IP54 rated will do this and back it with a 5 year guarantee.