Autotransformers AJN/ATN

AJN Autotransformers single-phase
ATN Autotransformers three-phase

Autotransformer - is a transformer, which has a common part of the primary and secondary winding.

Use - there, where the galvanic separation of the primary and secondary winding is not necessary.

The advantages of autotransformer - the need of smaller transformer core, so it is possible to get savings of place and savings of funds.

The size of the autotransformer depends on the primary and secondary voltage ratio.

The example 1:

Let’s transform the wattage 1000 VA, transfer 250 V/220 V:

• The use of a normal transformer
  RJV 1, 1000 VA, 250///220V, price c. 145 Euro
• The use of the autotransformer
  AJN 100, 1000 VA, 250/220V, price c. 16 Euro

The example 2:

Let’s transform the wattage 6300 VA, transfer 3 x 460 V/3 x 400 V :

• The use of a normal transformer
  RTV 6,3, 6300 VA, 3 x 460 V///3 x 400 V, price c. 528 Euro
• The use of the autotransformer
  ATV 1, 6300 VA, 3 x 460 V/3 x 400 V, price c. 161 Euro

Each demand on the autotransformer needs to be discussed with the technical section, for each autotransformer it is necessary to perform calculation.