External power supplies – May 2016

Technical bulletin on amending the standard

Webinar - June 2016

On April 30, 2016, Natural Resources Canada's Office of Energy Efficiency issued a Notice of Intent to align Canada’s Energy Efficiency Regulations (the Regulations) for external power supplies (EPS) with standards in the United States. This technical bulletin has been released to initiate the consultation process and to collect stakeholder views on the requirements being considered for EPS.

Input received during this stage of the process will inform the development of the Amendment 14 proposal.  In addition, the department will undertake a cost-benefit analysis using the best-available Canadian market data to assess the economic and environmental impacts of aligning these standards and to ensure Canadian consumers and businesses benefit from its implementation.

The Government of Canada intends to pre-publish a regulatory proposal in the Canada Gazette, Part I within approximately one year of this bulletin.

Background

EPS have been regulated in Canada since 2011, with the scope of the Regulations limited to single-voltage output EPS. On February 10, 2014, the United States Department of Energy (U.S. DOE) issued a final rule, which increased the stringency of the minimum energy performance standards (MEPS) for EPS and expanded the scope to include direct operation and high-voltage EPS.

Product description

External power supplies are devices that supply power to a variety of electronic products such as laptop computers, printers, cordless phones, etc.  An EPS converts electrical power into a form that is suitable for the end-use product (such as alternating current (AC) power from a wall outlet into lower voltage AC or into direct current (DC)).  EPS are in an enclosure with a separate cord and plug. Battery chargers are not included in this definition. Pending the outcome of Bill H.R. 4444 in the United States, EPS that are part of a power supply circuit, driver, or device that is designed exclusively to be connected to, and power solid-state lighting or ceiling fans using direct current motors may be excluded from this definition.

An indirect operation EPS cannot operate the end product without the assistance of a battery. Some class A EPS which operate at only one output voltage at a time (single-voltage) are considered indirect operation EPS. Currently regulated Class A EPS will remain regulated products. 

A direct operation EPS functions without the assistance of a battery. Natural Resources Canada (NRCan) is considering expanding the scope of the current Regulations to include high-power EPS, multiple voltage EPS and EPS that provide power for battery-charged motorized applications and for detachable battery packs.

Energy performance test procedure

NRCan is proposing that two acceptable standards be referenced as the energy performance test procedure:

  • United States Code of Federal Regulation (CFR) Title 10, Part 430, Subpart B, Appendix Z - Uniform Test Method for Measuring the Energy Conservation of External Power Supplies
  • CAN/CSA C381.1-[version TBD, update in progress] Test Method for Calculating the Energy Performance of External AC-DC and AC-AC Power Supplies

The CSA test procedure can be ordered from:

Canadian Standards Association (CSA)

Telephone: 1-800-463-6727
In Toronto, call 416-747-4044
Email: sales@csagroup.org
Website: http://www.shop.csa.ca

CSA energy efficiency standards are also available at no cost on their website. To access free standards you will first need to create an account to join the CSA Communities of Interest.

Energy performance standard

The current MEPS for Class A EPS, described in Table 1, would remain in effect.  Proposed MEPS to cover EPS that operate at single or multiple voltages or at higher power outputs are described in Table 2. 

Table 1: Proposed MEPS for indirect operation Class A EPS (aligned with U.S. DOE Code of Federal Regulations (CFR) Title 10 Section 430.32)
Nameplate output power (Po) Minimum average efficiency in active mode
(expressed as a decimal)
Maximum power in no-load mode (W)
(not applicable to security EPS)
 Po < 1 W  ≥ 0.5 × Po 0.50
1 W ≤ Po  ≤ 51 W ≥ 0.09 × ln(Po) + 0.5 0.50
51 W ˂ Po  ≤ 250 W ≥ 0.85 0.50

 

Table 2: Proposed MEPS for direct operation EPS (aligned with U.S. DOE Code of Federal Regulations (CFR) Title 10 Section 430.32)
Nameplate output power (Po) Minimum average efficiency in active mode
(expressed as a decimal)
Maximum power in no-load mode (W)
Single-voltage external AC-DC power supply, basic-voltage
Po ≤ 1 W ≥ 0.5 × Po + 0.16 ≤ 0.10
1 W ˂ Po  ≤ 49 W ≥ 0.071 × ln(Po) – 0.0014 × Po + 0.67 ≤ 0.10
49 W ˂ Po  ≤ 250 W ≥ 0.88 ≤ 0.21
Po  >  250 W ≥ 0.875 ≤ 0.50
Single-voltage external AC-DC power supply, low-voltage
Po ≤ 1 W ≥ 0.517 × Po + 0.087 ≤ 0.10
1 W ˂ Po  ≤ 49 W ≥ 0.0834 × ln(Po) – 0.0014 × Po + 0.609 ≤ 0.10
49 W ˂ Po  ≤ 250 W ≥ 0.87 ≤ 0.21
Po  >  250 W ≥ 0.875 ≤ 0.50
Single-voltage external AC-AC power supply, basic-voltage
Po ≤ 1 W ≥ 0.5 × Po + 0.16 ≤ 0.21
1 W ˂ Po  ≤ 49 W ≥ 0.071 × ln(Po) – 0.0014 × Po + 0.67 ≤ 0.21
49 W ˂ Po  ≤ 250 W ≥ 0.88 ≤ 0.21
Po  >  250 W ≥ 0.875 ≤ 0.50
Single-voltage external AC-AC power supply, low-voltage
Po ≤ 1 W ≥ 0.517 × Po + 0.087 ≤ 0.21
1 W ˂ Po  ≤ 49 W ≥ 0.0834 × ln(Po) – 0.0014 × Po + 0.609 ≤ 0.21
49 W ˂ Po  ≤ 250 W ≥ 0.87 ≤ 0.21
Po  >  250 W ≥ 0.875 ≤ 0.50
Multiple-voltage external power supply
Po ≤ 1 W ≥ 0.497 × Po + 0.067 ≤ 0.30
1 W ˂ Po  ≤ 49 W ≥ 0.075 × ln(Po)  + 0.561 ≤ 0.30
Po  >  49 W ≥ 0.86 ≤ 0.30

Effective dates

These Regulations will come into force six months after the date of publication in the Canada Gazette, Part II.

The energy efficiency regulations under consideration would apply to products manufactured on or after February 10, 2016.

Verification requirements

NRCan proposes to update the verification mark requirements. EPS must carry:

For the marking requirement, both marks may only be placed on the exterior of the product or on the exterior of the product’s package.

In both cases, the information to be reported in the energy efficiency report has been verified by a certification body accredited by the Standards Council of Canada to operate an energy efficiency certification program for the product.

Reporting requirements

Energy efficiency reports

The energy efficiency report required for EPS will include the following additional product specific information:

  • type of product
    • Class A
    • single-voltage external AC-DC power supply, basic-voltage
    • single-voltage external AC-DC power supply, low-voltage
    • single-voltage external AC-AC power supply, basic-voltage
    • single-voltage external AC-AC power supply, low-voltage
    • multiple-voltage external power supply
  • minimum average efficiency in active mode (expressed as a decimal)
  • maximum power in no-load mode (W)

The Regulations apply to products imported or shipped inter-provincially for sale or lease in Canada. This report must be submitted, by the dealer, to NRCan before the product is imported into Canada or traded inter-provincially for the first time.

Import reports

There is no change to import reporting.

Comments invited

The purpose of this bulletin is to provide stakeholders with technical detail required to comment on the requirements under consideration for EPS. 

Additional information on Canada’s Energy Efficiency Regulations including a current list of Standards Council of Canada accredited certification bodies can be found in the Department’s website.

We welcome your comments by June 30, 2016.  All correspondence should be forwarded to:

Office of Energy Efficiency

Natural Resources Canada
580 Booth Street
Ottawa, ON, K1A 0E4
E-mail: nrcan.equipment.rncan@canada.ca