High Voltage Transformers

High Voltage Transformers designed to meet your specific needs.

High voltage transformers have input or output voltages that are significantly higher than common line voltages. These units are designed and tested to a higher dielectric test voltage than the operating voltage they are designed to produce.

High voltage isolation transformers are highly insulated from primary to secondary and secondary to ground. These units are used to isolate the high voltage components from the rest of a system.

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Examples

Below are examples of some of the different models we have built for customers:

MT-4931 100kVA high-voltage transformer 3PH, 60Hz Primary = 480Vrms L-L Wye ±5, 10% taps Secondary = 4,700Vrms L-L Delta @ 12.3Arms MT-4922 10kVA high voltage transformer 3PH, 60Hz Primary = 480Vrms Delta Secondary = 4,160Vrms Wye @ 1.39Arms MT-4893 432VA high voltage transformer 1PH, 60Hz Primary = 120Vrms Secondary = 7,200Vrms @ 0.06Arms MT-4888 50kVA high voltage transformer 1PH, 60Hz Primary = 2,400V Secondary = 240V MT-4816 3, 2,000kVA 3PH, 1,000-5,000Hz Primary = 120Vrms, 1PH Secondary = 5kVrms @ 0.4Arms MT-4732 35kVA high voltage transformer 3PH, 60Hz Primary = 200/220/240/260/280Vrms Secondaries = 5,931Vrms, 8,000VDC MT-4709 31kVA HV transformer 3PH, 60Hz Primary = 190/210/230/250/270Vrms Secondary = 8.1kVDC @ 3.8ADC MT-4667 1kVA high voltage transformer 1PH, 60Hz Primary = 25,000Vrns Secodary = 120Vrms @ 8.33Arms MT-4654 500kVA high voltage transformer 3PH, 60Hz Primary = 4,800Vrms Delta, ±2.5, 5% Secondary = 208/120Vrms Wye @ 462.6Arms MT-4513 5.8kVA high voltage transformer 1PH, 60Hz Primary = 2,300Vrms Secondary = 200/400, 220/440, 230/460Vrms MT-3991 2x 125kVA high voltage transformer 3PH, 400Hz ±10% Primary = 135V/270V L-L Secondary = 1,755/3510V L-L... MT-3819 750VA high voltage transformer 1PH, 60Hz Primary = 2,300Vrms Secondary = 120Vrms @ 6.25Arms

Standard Specification Ranges

High voltage transformers can be specified per output voltage and/or voltage isolation levels desired. Preferences for connection types, dielectrics and enclosure types can be accommodated.

Power Rating 50VA up to 1.5MVA
No. of Phases 1
3
Frequency 50/60Hz
400Hz up to 20kHz
Voltages Up to 250kVrms
Up to 350kVDC or pulse
Isolation Up to 250kVrms
Up to 350kVDC
Dielectrics Air
Oil: Mineral and silicone
Gas: Sulfur Hexaflouride and Freon
Epoxy: materials/techniques vary with required properties
Options: Enclosures (NEMA 1, 3, 3R, 4, 4X)
Sealed gas tank/pressure vessel per design requirements
Casters

Our High Voltage Transformers

Mag-Tran has a long history of providing high quality and dependable high voltage and high voltage isolation transformers. Our parts have been used by National Laboratories and Universities to isolate hot decks and to conduct experiments; medical equipment and food sterilization equipment manufacturers for linear accelerators; semiconductor equipment manufacturers; satellite uplink equipment manufacturers; AC power source and frequency inverter manufacturers; high speed rail projects.