Auto Hexta Transformer units operate at a 50/60 Hz frequency and is ready to meet the highest level of efficiency in electricity needs. There are various sizes of auto transformers, ranging from 1KVA to 1000KVA to suit any needs. Hexta offers the dry type transformer that not only requires minimal maintenance, but also ensures an environmentally safe and long lifespan. Being a ISO9001 Certified company, Hexta transformers guarantee the best durability and quality with a 2-year standard warranty and extended options available.


An auto transformer is an electrical transformer with one winding that acts as part of both the primary and secondary winding. The winding can have multiple taps where each tap along the winding corresponds to a different load voltage. However, for best performance, a single tap is highly recommended. The voltage source and the electrical load are connected to two taps, in which one of the taps at the end of the winding is a common connection to both circuits. 

An auto transformer is an economical and compact means of connecting electrical equipment to a power supply or a different voltage. Typical applications of auto transformers are motor loads of industrial machinery, electric heating and air conditioners. Features

  • Primary & Secondary Voltage options available
  • Low Iron Losses
  • Low Copper Losses
  • Low Noise
  • Display Output : Voltmeter Analogue & Pilot Lamp RST
  • No Fan required, Convention Cooled
  • Insulation class E
  • Protection class IP00 & IP11
  • Easy & fast installation
  • Small footprint
  • ISO9001 Quality Certification
  • 2 Years Warranty with extended options

Primary / Secondary Voltage Options

Single or Multiple tap options

Below is a diagram of a three phase transformer with single and multiple taps. Electric current can flow from primary to secondary or secondary to primary.

All Hexta Trafo are manufactured according to the SPLN standard. Hexta Trafo built with and according to the ISO 9001:2015 quality management standards.

Hexta Trafo also helps the customer with safety. We use our own quality system, which can be adapted to the wishes and requirements of the customer.


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Jawa Barat - INDONESIA

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(021) 2925-5900, 2925-5905 (Hunting)

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