Custom Built Isolation Transformers | Stangenes Industries

Stangenes isolation transformers are custom-built to meet the specific needs of each customer. Our team of engineers has extensive experience designing and building isolation transformers, and we can create a transformer that will meet the customer’s specifications.

In addition, Stangenes Industries, an isolation transformer supplier, offers a wide range of options for its isolation transformers, including different voltages, sizes, and windings. As a result, we can provide our customers with the perfect transformer isolation for their applications.

If you need an isolation transformer that is custom-built to your specifications, look no further than Stangenes Industries. Our isolation transformers are designed to meet the specific requirements of our customers.

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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

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
9994 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


  • 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.)
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

Types of isolation transformers

High Voltage Isolation Transformers

Isolation transformers are devices that provide safe electrical isolation between two circuits. At higher voltages this is important when isolation is needed between the power and the device for sensitive measurements and safety. High voltage isolation transformers are also useful in applications where the load is floating off the main circuit ground.

Stangenes Industries is the leading manufacturer of high-voltage isolation transformers. Our transformers are available in various shapes and sizes, and we offer a wide range of capabilities to meet the needs of our customers. We offer both standard and custom transformer designs, and our engineers are available to assist you in selecting the right transformer for your application.

High-voltage isolation transformers benefits:

  • It prevents electrical shock, making them ideal for use in medical equipment or industrial settings.
  • Protects delicate circuitry from damage, making them ideal for use in electronic devices.
  • Various shapes and sizes are available.
  • Offers standard and custom transformer designs.
  • Engineers are available to assist with selecting the right transformer for the application.

Epoxy Cast Isolation Transformers

Epoxy cast isolation transformers are used in many applications requiring electrical isolation. Isolation transformers are used to protect sensitive electronic equipment from voltage surges and spikes, to provide isolation between circuits, and to provide a safe transformer isolation barrier between low-voltage and high-voltage circuits. Epoxy cast isolating transformers are available in a wide range of sizes and configurations to meet the needs of any application.

Stangenes Industries, an isolation transformer manufacturer, offers a wide variety of epoxy cast isolation transformer products, each designed to meet the specific requirements of our customers. Our isolation transformer products are available in single-phase and three-phase models. We also offer a variety of accessories to help you customize your isolation transformer for your specific application.

Epoxy cast isolation transformers benefits:

  • Epoxy cast isolation transformers provide electrical isolation between circuits.

  • Isolation transformers protect sensitive electronic equipment from voltage surges and spikes.

  • Epoxy cast isolation transformers are available in a wide range of sizes to meet the needs of any application.

Your One-Stop Shop for All Your Isolation Transformer Needs

Isolation transformers are a necessary component in many electrical systems, and it’s crucial to select the right one for the job. We hope this has helped you understand the different types of isolation transformers and how to choose the best one for your needs.

Stangenes Industries’ isolation transformers are also available in various voltages and power levels. In addition, we offer a variety of options for mounting and wiring our isolation transformers.

Our team of experts can help you select the right isolation transformer for your application. We would be more than happy to answer any questions you may have and help you get started on the process of ordering your very own custom isolation transformer.

Whether you require a transformer for medical equipment, laboratory use, or another purpose, we can construct one that will suit your requirements.

If you have any questions or need assistance selecting an isolation transformer, we would be happy to help! Contact us today so that we can begin discussing your isolation transformer needs!