Canada's Energy Efficiency Regulations

March 2005

Notice to Manufacturers of Dry-type Transformers

The Energy Efficiency Regulations for Dry-type Transformers came into effect on January 1, 2005. Pursuant to the Energy Efficiency Act, Natural Resources Canada has the authority to enforce the Energy Efficiency Regulations, including Regulations for Dry-type Transformers.

Based on requests from dealers, we are of the view that clarification is required for one of the exclusions to the scope of products covered under the regulation. Paragraph j) of the definition of dry type transformers excludes transformers "in which the highest voltage tap is greater than the lowest voltage tap by more than 10%". There is potential that the wording is ambiguous and may be used as a loophole to avoid compliance.

For greater clarity, NRCan interprets this exclusion to apply to dry-type transformers where the tap range is greater than 10% of the nominal voltage. This is consistent with the Canadian Standards Association document C802.2 which excludes transformers with "tap ranges greater than 10%".

For example, a 600V transformer with tap ranges of 630 to 570V (60V tap range or 10% of nominal voltage) is considered a regulated product.

NRCan believes that the intent of the Regulations has been clear and consistent and NRCan intends to enforce them on that basis.

To avoid any ambiguity, NRCan is in a process of amending the Regulations to not only clarify the current exclusion, but to also raise the level to 15%. NRCan intends to eliminate the tap range altogether in a subsequent amendment.

Ontario and New Brunswick have similar legislation that references the CSA Standard C802.2. NRCan will work with our provincial partners to ensure that these standards are met.