An autotransformer is a transformer with only one winding, that is, the output and input share a set of coils. Definition of coupling in auto coupling is electromagnetic coupling. When autotransformer is used as a step-down transformer, a part of the turns are drawn from winding as the secondary winding. When autotransformer is used as a step-up transformer, the applied voltage is only applied to a part of the turns of winding. According to structure, auto transformer can be divided into variable type and constant type. The common power phase numbers are 3-phase and single-phase. In step-down starters, the transformation ratio of an autotransformer is fixed, while the transformation ratio of a contact voltage regulator is variable. Compared with general transformers of the same capacity, autotransformers have the advantages of simple structure, less materials, small size, and low price.
3-phase autotransformer has 1 kVA rated capacity, for step down the voltage 380V to 220V/200V, current input 1.5A, output 2.6A/2.8A, frequency 50/60 Hz, electromagnetic induction. The primary and secondary windings of dry type auto transformer are insulated from each other, stable output, low price.
3-phase step down autotransformer for sale, good price. Rated capacity 5kVA, input voltage 380V (current 13A), output voltage 220V/200V (current 14A), frequency 50/60 Hz, copper/aluminum wire for selection. Dry type auto transformer, electromagnetic induction, the primary and secondary windings are insulated separately.
Buy dry type autotransformer at affordable price online. Power rating 15kVA, steps down the input voltage 3-phase 380V to 220V/200V output, input current 23A, output 39/43A, AC circuit 50Hz or 60 Hz, optional copper/aluminum wire. Dry type auto transformer supports self-cooling or wind-cooled, F insulation class winding.
3-phase autotransformer from professional manufacturer. Capacity rating 25kVA, designed to step down high voltage 380 volt to 220/200 volt, applicable AC circuit 50 Hz or 60 Hz, self-cooling or wind-cooled. Dry type auto transformer has copper/aluminum wire winding for selection, 98% high efficiency, competitive price.
Manufacturer price 3-phase autotransformer for sale online. Rated power capacity 30 kVA, primary input voltage 380 volts, secondary output voltage 220V/200V, AC circuit 50/60 Hz, optional copper/aluminum winding, supports self/wind-cooled, open type and sealed type versions are available.
Provide 3-phase autotransformer for sale online, ideal price. Power rating 45kVA, designed to step down high voltage 380 volt to 220/200 volt, used in AC circuit 50 Hz or 60 Hz, available self-cooling or wind-cooled. Winding of the dry type auto-transformer is copper or aluminum for selection, voltage customization is available, wide applications.
3-phase autotransformer uses copper or aluminum winding, rated capacity 75 kVA, steps down the primary voltage 380V to secondary 220/200V, frequency 50/60 Hz, self-cooling or wind-cooled. Winding of the dry type auto-transformer has ≥98% high efficiency, other input/output voltages are customizable.
ATO dry-type autotransformer for sale, economical price. Function is step down the input voltage 3-phase 380V to 220/200V output, power rating 100 kVA, rated frequency 50/60 Hz, winding material copper/aluminum, cooling mode self/wind-cooled, primary and secondary windings are isolated with each other.