About WR Transformers

WR has two manufacturing facilities. Our original facility is located in south of Montreal in Saint-Alphonse-de-Granby, Québec. Our United States manufacturing facility is in Tomball, Texas, a suburb of Houston. Both facilities produce identical transformer product lines and have ISO/IEC 17025-certified testing labs.

Click here for more information on our locations.

Yes, both of our facilites – in the United States and Canada – are ISO 9001:2015 certified. See more about our facility and product certifications by clicking here.

WR transformers have been installed cross five continents and are used to support a wide range of industries including surface and underground mining data centers, pulp and paper, aluminum smelting and micro-networks. Other essential industries in which these transformers are used include hospitals, factories, schools, pharmacies, grocery stores and other applications requiring a secure and consistent, reliable energy.

VPI stands for Vacuum Pressure Impregnation, a process used by WR Transformers to remove air and moisture from voids in the windings/coils. This is achieved by impregnating the windings /coil with varnish or resin under vaccuum and positive pressure. This process provides additional mechanical strength that can resist vibration and short-circuit forces and provide the end-user with longer service life and lower overall maintenance. Blocking moisture, dust and other environmental factors from the windings and coil also helps prevent premature deterioration of the transformer’s performance.

A dry-type transformer is a type of electrical transformer that uses air instead of liquid (like oil) to cool its coils and core.

WR is one of the top transformer manufacturers of dry-type transformers, which play a crucial role in industrial operations due to their safety, efficiency and adaptability. Unlike oil-filled transformers, which use liquid coolant, dry-type transformers use air for cooling. Here’s why they’re particularly important in industrial environments:

Enhanced Safety

• No flammable liquids: Without oil or other flammable materials, dry-type transformers reduce fire risk significantly. This makes them suitable for environments where fire safety is a high priority, such as chemical plants or manufacturing facilities.
• Explosion resistance: There’s a much lower risk of catastrophic failure involving fire or explosions, which makes them ideal for indoor or densely populated industrial settings.

Minimal Maintenance

• Dry-type transformers have fewer moving or liquid parts, which reduces the likelihood of leaks and breakdowns.
• They are less prone to contamination and can be cleaned with minimal disruption to operations.

Environmental Friendliness

• Because they don’t use oil or toxic coolants, dry-type transformers are considered to be more eco-friendly and pose no risk of soil or groundwater contamination.
• They are often compliant with stringent environmental regulations, making them a good choice for green initiatives.

An electrical transformer for industrial applications is used to transfer electrical energy between two or more circuits through electromagnetic induction and step down the incoming power line voltage to meet specific power requirements.