Rex Power Magnetics

08/26/2026

We just expanded our free transformer calculator suite to 9 tools! ⚡

Size a transformer, convert kW/HP to kVA, estimate fault current, check K-factor and harmonic losses, compare payback on efficiency upgrades, and more — all online, no sign-up needed.

Check it out: rexpowermagnetics.com/resources/calculators

04/09/2026

Cold impacts more than just transformer startup - it seriously threatens performance and lifespan.

To help you prepare for harsh winters, we've put together a guide with clear temperature thresholds, proven recommendations, and real-world tips to protect your transformers from low ambient conditions.

Check out the guide here 👉 https://www.rexpowermagnetics.com/knowledge-hub/low-ambient-temperature-considerations-for-dry-type-transformers/

03/24/2026

Cold weather doesn’t just affect transformer performance, it compromises reliability long before the unit is even energized. Below are 5 critical low ambient risks every specifier and installer should know.

❄️ Insulation Brittleness/Cracking Risks
❄️ Material Contraction/Mechanical Stress
❄️ Condensation/Moisture Issues
❄️ Reduced Flexibility/Handling Concerns
❄️ Storage/Energization Limits

Learn more about these risks and how to prevent them here 👇
https://www.rexpowermagnetics.com/knowledge-hub/low-ambient-temperature-considerations-for-dry-type-transformers/

03/04/2026

Ever spec'd a transformer and paid for it later?

Most transformer failures don't start in the field - they start during sizing and selection. Undersized capacity, ignored load characteristics, overlooked harmonics, and improper cooling assumptions: these oversights add up fast.

Swipe for the most common pitfalls we see.

For the practical guide and how to avoid them, check the link 👇
https://www.rexpowermagnetics.com/knowledge-hub/transformers-design-how-to-size-and-select-a-transformer/

02/19/2026

Sizing a transformer right means reliable performance, better efficiency, and lower long-term costs. Get it wrong? You risk overheating, early failure, or overspending.

Swipe through for the full 5-step process most engineers rely on.

See the full breakdown here 👉 https://www.rexpowermagnetics.com/knowledge-hub/transformers-design-how-to-size-and-select-a-transformer/

10/28/2025

Harmonics quietly shorten transformer life - unless you plan for them.

Our latest Knowledge Hub article explains what the K-Factor really means and how K-rated transformers keep your systems reliable and efficient.

Read more here 👉 https://www.rexpowermagnetics.com/knowledge-hub/understanding-the-k-factor-of-transformers-and-harmonics/

10/22/2025

Thermal overloads, electrical stress, and mechanical vibration often start small - but overtime, they erode transformer reliability. Our featured article explains the mechanisms behind failure and outlines proven strategies for long-term protection.

Learn about them here 👇
https://www.rexpowermagnetics.com/blog/transformer-failures-causes-faults-and-prevention-tips/

10/14/2025

Struggling to find the perfect transformer for your power needs?⚡

As the heart of your electrical system, the right transformer ensures lasting efficiency and reliability - but making the choice can be daunting.

Our latest insights simplify it all, guiding you through voltage requirements, environmental conditions, and more, so you can choose the ideal transformer with confidence.

Discover the insights here 👇
https://www.rexpowermagnetics.com/blog/how-to-pick-the-ideal-transformer-for-your-power-system/

03/18/2025

This past year has been one of transformation and expansion! From major facility upgrades to cutting-edge automation, we’re investing in the future to better serve our customers.

🏭 60,000 sq. ft. expansion at 85 Basaltic Road
⚙️ New equipment & automation to boost efficiency
📈 Increased production capacity & reduced lead times
🇨🇦 Proudly manufacturing high-quality transformers in Canada

We’re ready for what’s next—2025 will bring even more advancements!

There is a lot happening at Rex! A number of specialized machines have come online, and our dedicated "Standards" factory is fully up and running. We have al...

09/15/2023