1KVA 3 phase autotransformer

1KVA 3 phase autotransformer

1KVA 3 phase autotransformer has a rated capacity of 1kVA and can be used to step down any voltage to a usable range such as 277V to 120V/110V. Current input 1.5A, output 2.6A/2.8A, frequency 50/60Hz, using electromagnetic induction.

The primary and secondary windings of the dry-type autotransformer are insulated from each other, the output is stable, and the price is low.

1KVA 3-phase autotransformer is available in two materials: copper wire and aluminum wire. And can choose with or without shell.

1KVA three phase autotransformer manufacturers sell online.

The 1KVA 3 phase autotransformer has a rated capacity of 1kVA and can reduce any voltage to the required range, such as reducing the input voltage 380V to 220V or 200V.

1KVA 3 phase autotransformer input current 8A, output voltage 220V or 200V, output current 2.6A or 2.8A, frequency 50/60Hz.

The function of the dry-type three-phase autotransformer is to step down, and the primary and secondary windings are insulated separately.


Model SOB-1KVA
Phase 3 Phase
Capacity 1 kVA
Input Voltage AC 380V(optional)
Input Current 1.5A
Output Voltage (Optional) AC 220V, 200V(optional)
Output Current 2.6A (220V), 2.8A (200V)
Frequency 50Hz / 60Hz
Winding Material (Optional) Aluminum Wire, Copper Wire
Cooling Method Self-Cooling or Wind-Cooling
Working Efficiency ≥98%
Protection Grade IP21
Waveform Distortion No distortion (compared with output wave)
Insulation Resistance ≥ 150MΩ
Wiring Yn0
Electrical Strength Power frequency sinusoidal voltage 3000V lasts for 1 minute, no breakdown and flicker
Overload Protection Can withstand instantaneous 2 times the rated current
Moisture-Proof Type (Optional) Open type, sealed type
Ambient Temperature -20℃ ~ +45℃
Altitude ≤ 2500m
Relative Humidity 0-95%
Noise ≤35dB (within 1 meter)
Design Service Life 10+ years
Use Environment No explosion, rain and snow corrosion place, and no gas and conductive dust in the medium that can corrode metal and damage insulation
Weight 11 kg
Dimension 183*120*165 mm (without enclosure)

1KVA 3 phase autotransformer price:

The retail price of a 1KVA 3-phase transformer on the market is usually $500-900.

Here you will get exclusive preferential prices for transformer manufacturers.

Contact us now to get your 1KVA 3-phase transformer discounted price


1KVA three-phase autotransformer can be used in CNC production equipment, SMT, printing machine, EDM machine, automatic plug-in machine, precision measuring equipment, laser cutting machine, plastic molding machine, medical monitoring system, PCB drilling machine, laboratory equipment, Military Instrumentation Control Center, etc.

1KVA autotransformer advantages:

  • 1KVA three-phase autotransformer power is sufficient. The coil is made of insulated H-grade enameled wire, with small no-load current and low loss.
  • 1kVA dry-type autotransformer has built-in silicon steel sheet, which has good magnetic flux performance, high heat dissipation coefficient and low magnetic loss.
  • The autotransformer adopts electrophoresis technology fixture, with no burr on the edge, rounded corners to prevent collision and not easy to corrode.
  • Tin-plated copper tube terminals and rail-type wiring ports are convenient for wiring and ensure that the power-on overload capacity is improved to the extreme.

Wiring diagram of 1KVA 3 phase autotransformer:

The wiring method of the 3-phase autotransformer is the same, mainly the input and output 2 wiring ports, the following is the wiring diagram of the 1KVA 3-phase transformer

wiring diagram of the 1KVA 3-phase transformer



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