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Autotransformers

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PROTECTION AMONT / AVAL

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Single phase autotransformers application

Single phase autotransformer is composed of  an usual magnetic core but has only one winding, which is common to both primary and secondary circuits. On the contrary to isolating transformers, this product can’t isolate because it doesn’t have galvanic isolation between the primary and the secondary winding.

Product description

Thanks to performant, reliability components and our know-how, we master single phase autotransformers according to your specific requirements.

Each product is individually controlled and each batch is delivered with its control report.

Coupling / Connection

According to the transformer power, using screw, transformer terminal block with self-rising clamping plates or linergy passthrough terminal block to connect the transformers.

Wye/single phase connection with neutral point as standard coupling for three to single phase isolating transformers.

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Conformities

Products conform to IEC 61558-2-13 up to 2 kVA and IEC 6007611 from 2,5 kVA.

Marking CE,

Products suitable to EMC, Reach and RoHS 2

General caracterisitics

  • Primary voltage : 230V - 400V
  • Secondary voltage : 230V-400V
  • Power : From 0,16 to 25 kVA
  • Frequency : 50/60 HZ
  • Lifting hooks from 15kg
  • Dry type transformers with self-cooling system
  • Isolation voltage between windings and ground : 3000V
  • Heating class : H (operating temperature 45°C)
  • Available with IP23 housing, without housing or other on request
  • Atlitude : up to 1000m

Harmonics

Circé calculates harmonics in order to have a power supply maximal rate of 5 to 6% (including 2% for even ranks).

DC component : 0%

Rank 1 : 100% (fundamental)

Available options

Circé has standard option range which can be extended according to your need:

  • Rolling bears
  • RAL colour choice on housing
  • Thermal sensor
  • Low induction transformers
  • Cable gland
  • Reinforced insulation
  • Upstream & downstream protections
  • Silent blocs
  • Housing types
  • Tap ranges
  • Electrostatic screen
  • Arresters

Specific demands

Circé produces single phase autotransformers according to your specifications. Circé customer relationship is based on our listening skills and advice.

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