From: Brian Coffey

Sent: Friday, September 23, 2011 12:32 PM

To: Matthew Nardotti

Subject: FW: Distribution Transformers Committee reques ted areas for the DOE to Investigate before

final rules are selected.

______________________________________________________________ Brian Coffey | Senior Consultant | Energy | Navigant Consulting, Inc.

1801 K Street NW | Suite 500 | Washington, DC 20006

+1.202.481.7521 Office

From: Millure, Dave [ mailto:Dave.Millure@metglas.com ]

Sent: Friday, September 23, 2011 12:19 PM

To: Kenneth Winder; Rosenstock, Steven

Cc: Richard Parker; Corkran, Jerry L; Caitlin Johnson; rick.anderson@faypwc.com ; tballo@earthjustice.org ; ScottB@lvmetals.com ; john.caskey@nema.org ; john.cymbalsky@ee.doe.gov ; adelaski@standardsasap.org ; Teckman@nwcouncil.org ; gbf1@pge.com ; carlos.gaytan@ge.com ; rgreeson@federalpacific.com ; bruce.r.hirsch@bge.com ; mhyland@appanet.org ; snadel@aceee.org ;
wes.patterson@us.abb.com ; Eric.Petersen@aksteel.com ; Raymond.Polinski@atimetals.com ; rroy@nrdc.org ; robert.saint@nreca.coop ; chuck.simmons@pgnmail.com ; mark.stoering@xcelenergy.com ; cabolduc@lbl.gov ; kcoughlin@lbl.gov ; Brian Coffey; gjrosenquist@lbl.gov ; Michael Rivest; Jerry Hodge;

jrossetti@mlgw.org ; Jim.creevy@nema.org ; Meyers, Aaron; Daniel.Cohen@hq.doe.gov ; jmauer@standardsasap.org ; greg.coulter405@gmail.com ; bsmith@federalpacific.com ; pkumar@publicpower.org ; Trujillo, Antonio; Phil Hopkinson; ahofmann@publicpower.org ; BermanEconomics@gmail.com ; Ryan, Paul; jerry.schoen@aksteel.com ; mwaltner@nrdc.org ; chad.kennedy@us.schneider-electric.com ; eduardorobles@eaton.com ; vijay.tendulkar@onyxpower.com ; carlosgsiqueiros@eaton.com ; thomas.patzner@us.schneider-electric.com ; Marusinec, Richard M;

Schneider, Jeffrey A; Loomans, Michael T; Poole, Raymond L; Moore, Jack C; Smith, Jennifer

Subject: RE: Distribution Transformers Committee reques ted areas for the DOE to Investigate before

final rules are selected.

Dear Mr. Winder



### Comments about the effects of transformer loading on a distribution pole : We look forward to

seeing the basis for your statements below concerning pole loading.



### Comments about Amorphous core transformers : As for your brief comments that attempt to cast

doubt on durability of amorphous

‐ core transformers, please be advised that there are over 2 million

amorphous distribution transformers installed worldwide and popularity is increasing. I assume that

you are saying that you have test data before installation and identically

‐ measured test da ta on the

same units after some time in service or in storage. Your claims are counter to our experience, and I

believe that if you are to make such claims about higher “failure” rates, it is incumbent upon Moon Lake

Electric to disclose those data and we look forward to seeing th em. Amorphous cores have been tested

in both field tests and in accelerated aging tests and the conclusion is that core loss will not increase

over the lifetime of any transformer with the accelerated aging predicting no core loss increase for

hundreds of years. Again, we look forward to seei ng details of your analysis incl uding a comparable

“steel

‐ core” analysis and a definition of what you term as “failure.”Best regards

Dave Millure

Metglas Inc. (most likely provider of the amorphous metal for your 1,700 amorphous transformers)

From: Kenneth Winder [ mailto:kwinder@mleainc.com ]

Sent: Thursday, September 22, 2011 7:36 PM

To: Rosenstock, Steven

Cc: Richard Parker; Corkran, Jerry L; Caitlin Johnson; rick.anderson@faypwc.com ; tballo@earthjustice.org ; ScottB@lvmetals.com ; john.caskey@nema.org ; john.cymbalsky@ee.doe.gov ; adelaski@standardsasap.org ; Teckman@nwcouncil.org ; gbf1@pge.com ; carlos.gaytan@ge.com ; rgreeson@federalpacific.com ; bruce.r.hirsch@bge.com ; mhyland@appanet.org ; Millure, Dave;

snadel@aceee.org ; wes.patterson@us.abb.com ; Eric.Petersen@aksteel.com ; Raymond.Polinski@atimetals.com ; rroy@nrdc.org ; robert.saint@nreca.coop ; chuck.simmons@pgnmail.com ; mark.stoering@xcelenergy.com ; cabolduc@lbl.gov ; kcoughlin@lbl.gov ; Brian Coffey; gjrosenquist@lbl.gov ; Michael Rivest; Jerry Hodge; jrossetti@mlgw.org ; Jim.creevy@nema.org ; Meyers, Aaron; Daniel.Cohen@hq.doe.gov ; jmauer@standardsasap.org ; greg.coulter405@gmail.com ; bsmith@federalpacific.com ; pkumar@publicpower.org ; Trujillo, Antonio; Phil

Hopkinson; ahofmann@publicpower.org ; BermanEconomics@gmail.com ; Ryan, Paul;

jerry.schoen@aksteel.com ; mwaltner@nrdc.org ; chad.kennedy@us.schneider-electric.com ;

eduardorobles@eaton.com ; vijay.tendulkar@onyxpower.com ; carlosgsiqueiros@eaton.com ;
thomas.patzner@us.schneider-electric.com ; Marusinec, Richard M; Schneider, Jeffrey A; Loomans,

Michael T; Poole, Raymond L; Moore, Jack C; Smith, Jennifer

Subject: Re: Distribution Transformers Committee reques ted areas for the DOE to Investigate before

final rules are selected.



### On 9/22/2011 5:11 PM, Kenneth Winder wrote:

Mr. Parker and others,

Below are comments for the modeling, studies and considerations to help in this negotiated

Rulemaking process.

Comments about the effects of transformer loading on a distribution pole : A statement of

record was made in the September Rulemaking Committee meeting that vertical weight on a pole

(from a transformer) can be ignored.

I believe this is incorrect and have found some engineering data and calculations concerning the

effects of the application of transformers as a tran sverse and vertical load on a pole. It sets forth

the calculation methods of the fo rces involved and eventu ally arrives at allo wable loads that can

be attached to a distribution pole of various heights and classes. The work shown and

conclusions reached in that paper need to be modified to represent an amorphous core

transformer since that type of tr ansformer is larger physically and is offset further from the pole

than the calculations found, they need to be recalculated for the amorphous transformer

application.

I believe this information should become part of the public record. I need to look further into

any copyright on the information be fore it can be sent to the group.

### Comments about Amorphous core transformers : We have reviewed th e failure of pole-mounted

amorphous core transformers over a twenty year period for our utility. We purchased over 1,700

of them during the early to mid-1990's. We have looked at the amorphous transformers

purchased compared to those that are still in service (includes those that are on the warehouse

docks and in the field). We have tried to simila rly compare the same for steel-core transformers.

Failure rates appear to differ signi ficantly (higher for Amorphous core units). Is this represented

properly in the DOE/Navigant model?

Kenneth A. Winder

Moon Lake Electric Assn., Inc.

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