General Purpose Transformers

Custom General Purpose Transformers (Power Transformers) are designed to provide system power

Products are available in:

  • Step-Up, Step-Down, or one to one for isolation
  • Single-phase and three-phase
  • 50, 60, 400Hz up to 20kHz
  • Multiple primary and/or secondary voltages accommodated (taps available)
  • Open frame or in NEMA rated enclosures
  • With or without circuit protection, EMO circuitry and other options
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Below are examples of some of the different models we have built for customers:

150kVA General Purpose Transformer with multiple taps QTE 6658 150kVA Open Frame Transformer 3PH, 50/60Hz Primary = 210/200/190Vrms Delta Secondary = 208Wye @ 416Arms 22kVA General Purpose Transformer QTE 9015 22kVA Open Frame Transformer 3PH, 50/60Hz Primary = 480/440Vrms Secondary = 380/219Vrms @ 33.5Arms Custom General Purpose Transformer with multiple taps QTE 9364 30kVA Open Frame Transformer 3PH, 50/60Hz Primary = 380Vrms Secondary = 208Vrms @ 83.3Arms 15kVA General Purpose Transformers QTE 9445 15kVA Stand Alone Transformer 3PH, 50/60Hz Primary = 180 - 480Vrms 4 Secondaries total, varying power levels 6.3kVA General Purpose Transformers QTE 9541 6.3kVA Open Frame Transformer 1PH, 50/60Hz Primary = 208Vrms Secondary = 208/230Vrms @ 28Arms 225kVA General Purpose Transformer with multiple secondary taps QTE 9808 225kVA Open Frame Transformer 3PH, 50/60Hz Primary = 480Vrms Delta Secondary = 340-520Vrms Wye

Standard Specification Ranges

General purpose or Power transformers are required in many instances to provide main AC power from the wall (often 480V) to equipment that may require a step-down to 208V or to some other voltage. Often, we design parts with universal voltage inputs for a company so that it is ready to ship to any country in the world and is ready to run at the local voltage provided to a facility and to the operational frequency of that region. Multiple devices may be powered by the transformer requiring a number of different output voltages or taps. The electrostatic shield in the units provides necessary isolation between primary and secondary and secondary to ground and input and outputs can all be furnished with circuit protection and/or other options. See our Turnkey Solutions page for more information.

Power Rating 50VA up to 1.5MVA
No. of Phases 1
Frequency 50/60Hz
400Hz up to 20kHz
Voltages Up to 600V Standard
For higher voltages, visit our high voltage transformer page.
Common Taps (Vrms) 180 | 200 | 208 | 220 | 240 | 260 | 280
380 | 400 | 440 | 480 | 500 | 600
Specific taps and ± can be accommodated
Other Options Enclosures
Circuit breakers
EMO switches
Low impedance
K-factor rating

Our General Purpose Transformers

Mag-Tran produces world-class, custom-designed and custom-manufactured General Purpose or Power Transformers. Designed conservatively for high performance, low temperature rise and conservative operation, our products have a long history of proving to be of high quality and extreme reliability.