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3 Phase Transformers


Our three-phase transformers are designed and manufactured to IEC60076 and IEC61558.

These are double wound isolation transformers for continuous duty, complete with earth screen between the primary and secondary windings. These types of transformers can be manufactured to meet specific standards.

  Primary Voltage To customer’s specification or 15KV
  Secondary Voltage To customer’s specification or 15kV Ratings
up to and including  2MVA 
Dry type and oil cooled options are available
  Frequency 50/60Hz or customer requirements
  Insulation Class B, F, H or C
  Insulation Resistance > 5 Meg Ω
  Dielectric Strength: Primary to Secondary > 38kV 
Primary to Earth > 38kV 
Secondary to Earth > 38kV
  Ambient Temperature 30°C or to meet customer requirements
  Duty Continuous duty at the rated kVA
  Core High grade electrical steel, securely clamped and tied
  Windings Grade 2 Polyester covered copper round wire
or Nomex covered copper strip
  Cooling Open transformers - AN enclosed ANAN fan cooling
can also be provided on special units
  Terminals Din Rail mounted, stud or copper bus bar according
to the current level
  Earthing Earth Screen between Primary and Secondary 
Windings with cable brought out and bonded
to the core and all steel metalwork
      Enclosures Sheet steel enclosures can be provided,
    standard and bespoke available
      Protection Fuses or circuit breakers can be fitted


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    3 Phase Transformer in Stainless Steel Enclosure IP55

    • Input 480V ± 10% Output 300V
    • Rating 145KVA
    • Frequency 50/60Hz
    • Class H
    • Vector Group Dyn11

    3 Phase Transformer in Stainless Steel Enclosure IP55