Rex Power Magnetics is a Canadian dry-type transformer design and manufacturing company
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Rex Power Magnetics

Rex Power Magnetics is a Canadian dry-type transformer design and manufacturing company, headquartered in Concord, Ontario (Greater Toronto Area). Since its humble beginnings in 1972, Rex has quickly emerged as a competitive and innovative supplier of high-quality CSA certified and UL listed power magnetic products for markets in North America and overseas. With over 270 employees, we offer a broad product line including custom dry-type transformers, reactors, other magnetic devices, and related components and services. We distinguish ourselves from the competition by our focus on continual product improvement, responsiveness, and customer service.

Global Certifications B
Responsive Customer Service
Quality Management
Quality Management B
Global Certifications A

Featured products

Energy Efficiency Regulation Changes Effective Jan. 1 2010 (USA)

The DOE officials also advised in 2006 that efficiency standards for Medium Voltage Dry Type Distribution Transformers (Input voltage of 601 Volts to 34.5 kilovolts) are expected to come into effect around the year 2010. With the DOE Final Rule published Oct.12 2007 these new efficiency levels for Medium Voltage Transformers come into effect on January 1, 2010. The regulations already in effect for Low Voltage Distribution Transformers remain unchanged.
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The table below summarizes these amended or new regulations and their effect
in Canada and the USA.

IN CANADA
IN USA

LOW VOLTAGE

Input Voltage
600 Volts or less
Output Voltage
600 Volts or less
60HZ

15 to 833 kVA I phase
15 to 7500kVA III phase
Per C802-00
In effect since Jan 1 2005

As of Jan 1 2010
NO CHANGE

15 to 833kVA I phase
15 to 2500kVA III phase
Per DOE Final Rule April 27 2006
In effect since Jan 1 2007

As of Jan 1 2010
NO CHANGE

MEDIUM VOLTAGE
Input Voltage
601 Volts to 34.5k volts
Output Voltage
600 Volts or less

60HZ

Same as above
In effect since Jan 1 2005

Amended as of Jan. 1 2010
  - Harmonized with US DOE
  - Efficiency levels increased
  - Up to 7500kVA

Cost increase impact

NEW
Required as of Jan. 1 2010
Per DOE Final Rule Oct. 12 2007

15 to 833 kVA I phase
15 to 2500kVA III phase


Cost Increase Impact

Exemption Differences
Tap Ranges Drive

No Tap exemptions
Not Exempted

More than + / - 10%
Exempted

Other Transformers also exempted:
Auto, Instrument, Machine Tool (control), Rectifier, Converter, Non-ventilated, Sealed, Grounding, Regulator, Special Impedance, Welding, Uninterruptible power supply, underground mining, Testing, Furnace, encapsulated, Not 60 HZ, Drive with more than 2 output windings or over 1500amps, rewound or rebuilt.