Custom Isolation Transformers

Stangenes Industries can meet your needs for devices which require electrical transfer, circuit protection, and power isolation. We achieve this by offering a nearly endless range of configurable custom isolation transformers. In addition to our custom isolation transformers, we also feature a number of standard constructions. Stangenes has a range of expertise in building isolation transformers with various primary and secondary voltage requirements, isolating voltage capabilities, kVA ratings, insulation media, as well as various sizes and weights to fit your setup.

We offer a full standard line of epoxy cast isolation transformers. The standard primary voltages ranging from 120V to 240V, isolation voltages of 30kVDC or 50kVDC, standard VA ratings from 100VA to 1000VA, and capacitance from 70pF to 140pF. Like our conventional isolation transformers, epoxy cast isolation transformers are also available in custom configurations. We look forward to working with you for your power isolation needs. Please contact Stangenes today for more information.

See Our Standard Products

Isolation Transformers Capabilities

General Information

Stangenes Isolation Transformers have been constructed in so many shapes and sizes that it is impossible to show them all at once. The following description represents a broad category, which can be reconfigured almost infinitely.

Industry Standards

ISO-9001-2015
International Organization for Standardization

High Voltage Isolation Transformers
Model No. SI Primary Voltage Secondary Voltage KVA Rating Isolation Voltage Medium
1240 A 240 V 120 V, 40 A
12 V, 660 A
12.7 80 kVDC AIR
6477 120 V, 240 V 120 V/240 V 0.5 150 kVDC EPOXY
2971 120 V 120 V, 8.3 A 1 150 kVDC SF6
1483 480 V 110 kV, 400 mA 44 150 kVDC SF6
5809 208 V 120 V, 83.3 A 10 200 kVDC SF6
1148 480 V 21 V, 170 A 3.5 250 kVDC SF6
7469 480 V 22 V, 370 A 8.2 270 kVDC SF6
5155 117 V 117 V, 8.5 A 1 300 kVDC OIL
7232 480 V 100 V, 150 A 15 300 kVDC OIL
4952 480 V 22 V, 300 A
175 V, 10 A
8.3 350 kVDC SF6
5424 120 V 120 V, 25 A 3 500 kV SF6
4149 480 V 60 V, 650 A 39 600 kV PULSE OIL
3666 20 V 20 V, 50 A 1 800 kV PULSE OIL

Notes:

  • May need small bias current through secondary for maximum rating.
  • Double shielded

Other standard and custom models available.

Epoxy Cast Isolation Transformers

All units are 50/60 Hz.

Model No. Primary Voltage Secondary Voltage VA Rating Capacitance Sec to Pri and Core Isolation Voltage Dimensions (inches) Wt. (lb.)
A B C
SIT 30-100 120 120 100 70 pF 30 kVDC 5 6 6.5 15
SIT 30-250 120 120 250 90 pF 30 kVDC 6 6 6.5 21
SIT 30-500 120/240 120/240 500 125 pF 30 kVDC 7 8 7.5 40
SIT 30-1000 120/240 120/240 1000 140 pF 30 kVDC 7 8.5 8.5 52
SIT 50-250 120 120 250 70 pF 50 kVDC 6 6.5 6.5 23
SIT 50-750 120 120 750 110 pF 50 kVDC 7 9 8.5 48
SIT 50-1000 120/240 120/240 1000 130 pF 50 kVDC 7 9.5 8.5 56