To all Distribution Transformer stakeholders:

The Department of Energy thanks stakeholders for their participation in the distribution transformer energy

conservation standards Notice of Proposed Rulemaking (NOPR) September 27, 2006, public meeting and for

making it a successful meeting.

There were three requests made in the meeting which I am addressing in this message.

1) Stakeholders asked where the Department had published the actual percentage efficiency ratings for each of

the kVA ratings at all the trial standard levels (TSLs). These levels were published in the Environment

Assessment report posted in early August 2006 as part of the Technical Support Document (TSD):

(http://www.eere.energy.gov/buildings/appliance-standards/commercial/p dfs/transformer_tsd/env_assessment.pdf).

See Tables EA.3 through EA.10.

2) Stakeholders asked where the Department had published the no-load and load-losses (in watts) for each of

the representative units at each of the Candidate Standard Levels. These levels were published in Appendix 8E

of the TSD:

(http://www.eere.energy.gov/buildings/appliance standards/comimercial/pdfs/transformertsd/appendix_8e.pdf)

See Tables 8E.2.1 to 8E2.10

3) Stakeholders asked whether the Department had analyzed the relationship between transformer operating

temperature and lifetime. This issue was not raised as an issue in the Advance Notice of Proposed Rulemaking

in 2004, and therefore was not analyzed for the NOPR. The Department invites stakeholders to submit

comments on this issue.

The deadline for submitting written comments on the NOPR is October 18, 2006. You may submit comments,

identified by docket number EE-RM/STD-00-550 and/or Regulatory Information Number (RIN) 1904-ABO8,

by any of the following methods:

Federal eRulemaking Portal: http://www.regulations.gov. Follow the instructions for submitting

comments.

E-mail: TransformerNOPRComment@ee.doe.gov. Include docket number EE-RM/STD-00-550

and/or RIN 1904-AB08 in the subject line of the message.

Mail: Ms. Brenda Edwards-Jones, U.S. Department of Energy, Building Technologies Program,

Mailstop EE-2J, NOPR for Distribution Transformers Energy Conservation Standards, docket number

EE-RM/STD-00-550 and/or RIN 1904-ABO8, 1000 Independence Avenue, SW, Washington, DC,

20585-0121. Please submit one signed original paper copy.

Hand Delivery/Courier: Ms. Brenda Edwards-Jones, U.S. Department of Energy, Building

Technologies Program, Room 1J-018, 1000 Independence Avenue, SW, Washington, DC, 20585.

Telephone: (202) 586-2945. Please submit one signed original paper copy. All comments (electronic

and paper) should clearly identify the Docket number: EE-RM/STD-00-550 and/or RIN 1904-ABO8.

Sincerely,

Antonio Bouza

Building Technologies Program

U.S. Department of Energy

1000 Independence Avenue, SW

Washington DC 20585-0121

phone: 202.586.4563

antonio.bouza@ee.doe.gov

 EE-RM/STD-00-550 COMMENT 110.2

To all Distribution Transformer stakeholders: 

The Department of Energy thanks stakeholders for their participation in the distribution transformer energy 

conservation standards Notice of Proposed Rulemaking (NOPR) September 27,2006, public meeting and for 

making it a successful meeting. 

There were three requests made in the meeting which I am addressing in this message. 

1) Stakeholders asked where the Department had published the actual percentage efficiency ratings for each of 

the kVA ratings at all the trial standard levels (TSLs). These levels were published in the Environment 

Assessment report posted in early August 2006 as part of the Technical Support Document (TSD): . 

(http://www .eere.energy. gov /buildings/ appliance _ standards/ commerciai/pdfs/transformer _ tsd/ env _assessment. pdf). 

See Tables EA.3 through EA. 10. 

2) Stakeholders asked where the Department had published the no-load and load-losses (in watts) for each of 

the representative units at each of the Candidate Standard Levels. These levels were published in Appendix 8E 

of the TSD: 

(http://www . eere. energy. gov /buildings/appliance _ standards/ commercialipdfs/transformer _ tsd/ appendix _ 8e. pdf) 

See Tables 8E.2.1 to 8E2.1 0 

3) Stakeholders asked whether the Department had analyzed the relationship between transformer operating 

temperature and lifetime. This issue was not raised as an issue in the Advance Notice of Proposed Rulemaking 

in 2004, and therefore was not analyzed for the NOPR. The Department invites stakeholders to submit 

comments on this issue. 

The deadline for submitting written comments on the NOPR is October 18,2006. You may submit comments, 

identified by docket number EE-RM/STD-00-550 and/or Regulatory Information Number (RIN) 1904-AB08, 

by any of the following methods: 

Federal eRulemaking Portal: http://www.regulations.gov. Follow the instructions for submitting 

comments. 

E-mail: TransformerNOPRComment@ee.doe.gov. Include docket number EE-RM/STD-00-550 

and/or RIN 1904-AB08 in the subject line of the message. 

Mail: Ms. Brenda Edwards-Jones, U.S. Department of Energy, Building Technologies Program, 

Mailstop EE-2J, NOPR for Distribution Transformers Energy Conservation Standards, docket number 

EE-RM/STD-00-550 and/or RIN 1904-AB08, 1000 Independence Avenue, SW, Washington, DC, 

20585-0121. Please submit one signed original paper copy. 

Hand Delivery/Courier: Ms. Brenda Edwards-Jones, U.S. Department of Energy, Building 

Technologies Program, Room lJ-018, 1000 Independence Avenue, SW, Washington, DC, 20585. 

Telephone: (202) 586-2945. Please submit one signed original paper copy. All comments (electronic 

and paper) should clearly identify the Docket number: EE-RM/STD-00-550 and/or RIN 1904-AB08. 

Sincerely, 

Antonio Bouza 

Building Technologies Program 

U.S. Department of Energy 

1000 Independence Avenue, SW 

Washington DC 20585-0121 

phone: 202.586.4563 

antonio.bouza@ee.doe.gov