From: Richard Parker [mailto:richardparkerdc@gmail.com] 

Sent: Monday, December 19, 2011 10:11 PM 

To: Meyers, Aaron 

Cc: Tendulkar, Vijay (SISC); Timothy Ballo; Freeman, Jeremiah (CONTR); rick.anderson@faypwc.com; 

ScottB@lvmetals.com; john.caskey@nema.org; Corkran, Jerry L; Cymbalsky, John; 

adelaski@standardsasap.org; Teckman@nwcouncil.org; gbf1@pge.com; carlos.gaytan@ge.com; 

rgreeson@federalpacific.com; bruce.r.hirsch@bge.com; jhodge@howard.com; mhyland@appanet.org; 

dave.millure@metglas.com; snadel@aceee.org; wes.patterson@us.abb.com; Eric.Petersen@aksteel.com; 

Raymond.Polinski@atimetals.com; artrosenfeld@gmail.com; srosenstock@eei.org; rroy@nrdc.org; 

robert.saint@nreca.coop; chuck.simmons@pgnmail.com; kwinder@mleainc.com; mwaltner@nrdc.org; 

jerry.schoen@aksteel.com; Paul.Ryan@hitmet.com; BermanEconomics@gmail.com; 

ahofmann@publicpower.org; pkumar@publicpower.org; bsmith@federalpacific.com; 

greg.coulter405@gmail.com; jmauer@standardsasap.org; Cohen, Daniel; Jim.creevy@nema.org; 

jrossetti@mlgw.org; cabolduc@lbl.gov; kcoughlin@lbl.gov; Brian Coffey; Michael Rivest; 

gjrosenquist@lbl.gov; Caitlin Johnson; Zhimei Luo; Marchetti, Emily (CONTR); charlied@uus.org; 

DYoung@energy-solution.com; James.Lass@cleco.com; maheshsampat@bellsouth.net; 

phopkinson@hvolt.com; Matthew Nardotti; Raba, Jim; Savitz, Maxine (EMAB); 

tpetrosino@carolina.rr.com; chris.brown@cogentpowerinc.com; ted.johnstone@cogentpowerinc.com; 

frank.guilbault@cogentpowerinc.com; ned.efbrush@gmail.com; dbrender@cda.copper.org; 

chad.kennedy@us.schneider-electric.com; eduardorobles@eaton.com; thomas.patzner@us.schneiderelectric.com; carlosgsiqueiros@eaton.com; chad.kennedy@schneider-electric.com; Hyland, Mike; Caskey, 

John; Robert Greeson; thomas.patzner@schneider-electric.com; Kennedy, Irene (SISC); 

scott.may@siemens.com; Robert Carmichael; Christopher Lau 

Subject: Re: LVDT Working Group on Data Center Transformers 

Aaron, 

Thanks for catching this. I would like to refer your question to Dan Cohen for a more definitive 

answer, but my instinct would be that it should be possible (and not terribly difficult as a legal 

matter) to limit the exclusion to dry-type transformers. 

Richard 

On Mon, Dec 19, 2011 at 6:49 PM, Meyers, Aaron <Aaron.Meyers@cooperindustries.com> 

wrote: 

Dear Mr. Parker, 

Medium-voltage liquid-filled transformers are often used in data center 

applications and therefore, defining a "Data Center Transformer" as a 

three-phase low-voltage dry-type distribution transformer is potentially 

damaging. Would it be possible to either modify the definition to 

recognize other types of data center transformers but state that the 

exemption only applies to the low-voltage dry type variety? Another 

alternative might be to define it more specifically as a Low-Voltage Dry 

Type Data Center Transformer? Thoughts? Comments? 

Thanks and Best Regards, 

Aaron 
-----Original Message----- 

From: Tendulkar, Vijay (SISC) [mailto:vijay.tendulkar@onyxpower.com] 

Sent: Sunday, December 18, 2011 1:54 PM 

To: Richard Parker 

Cc: Timothy Ballo; Freeman, Jeremiah (CONTR); 

'rick.anderson@faypwc.com'; 'ScottB@LVMetals.com'; 

'john.caskey@nema.org'; Corkran, Jerry L; Cymbalsky, John; 

'adelaski@standardsASAP.org'; 'Teckman@nwcouncil.org'; 'gbf1@pge.com'; 

'carlos.gaytan@ge.com'; 'rgreeson@federalpacific.com'; 

'bruce.r.hirsch@bge.com'; 'jhodge@howard.com'; 'mhyland@appanet.org'; 

'dave.millure@metglas.com'; 'snadel@aceee.org'; 

'wes.patterson@us.abb.com'; 'Eric.Petersen@aksteel.com'; 

'Raymond.Polinski@ATImetals.com'; 'artrosenfeld@gmail.com'; 

'srosenstock@eei.org'; 'rroy@nrdc.org'; 'robert.saint@nreca.coop'; 

'chuck.simmons@pgnmail.com'; 'kwinder@mleainc.com'; 'mwaltner@nrdc.org'; 

'jerry.schoen@aksteel.com'; 'Paul.Ryan@hitmet.com'; 

'BermanEconomics@gmail.com'; 'ahofmann@publicpower.org'; 

'pkumar@publicpower.org'; 'bsmith@federalpacific.com'; 

'greg.coulter405@gmail.com'; 'jmauer@standardsasap.org'; Cohen, Daniel; 

Meyers, Aaron; 'Jim.creevy@nema.org'; 'jrossetti@mlgw.org'; 

'cabolduc@lbl.gov'; 'kcoughlin@lbl.gov'; 'brian.coffey@navigant.com'; 

'richardparkerdc@gmail.com'; 'mrivest@navigant.com'; 

'gjrosenquist@lbl.gov'; 'caitlin.johnson@navigant.com'; 

'zhimei.luo@navigant.com'; Marchetti, Emily (CONTR); 'charlied@uus.org'; 

'DYoung@energy-solution.com'; 'James.Lass@cleco.com'; 

'maheshsampat@bellsouth.net'; 'phopkinson@hvolt.com'; 

'matthew.nardotti@navigant.com'; Raba, Jim; Savitz, Maxine (EMAB); 

'tpetrosino@carolina.rr.com'; 'chris.brown@cogentpowerinc.com'; 

'ted.johnstone@cogentpowerinc.com'; 

'frank.guilbault@cogentpowerinc.com'; 'ned.efbrush@gmail.com'; 

'dbrender@cda.copper.org'; 'chad.kennedy@us.schneider-electric.com'; 

'eduardorobles@eaton.com'; 'thomas.patzner@us.schneider-electric.com'; 

'carlosgsiqueiros@eaton.com'; 'chad.kennedy@schneider-electric.com'; 

'Hyland, Mike'; 'Caskey, John'; 'Robert Greeson'; 

'thomas.patzner@schneider-electric.com'; Kennedy, Irene (SISC); 

'scott.may@siemens.com'; 'Robert.Carmichael@navigant.com'; 

'Christopher.Lau@navigant.com' 

Subject: LVDT Working Group on Data Center Transformers 

Dear Mr. Parker and respected all others, 

 I still have problems with E-Mail and I hope 

this communications reaches all of you. Mr. Ballo is kind enough to bail 

me out of my E-Mail problems and help me out with my not so good 

proficiency in Microsoft Word editing. Without lot of help from Mr. 
Patzner and Mr. Ballo, DCT definition document could not have been 

finished in timely manner. I wish, I will get to work every day with 

young gentlemen like Mr. Patzner and Mr. Ballo. Further, the comments 

raised in the meetings by various individuals were very helpful in 

formulating the final documents. On behalf of DCT subcommittee, I extend 

my appreciation to all those who participated in the DCT definition 

discussions. 

 I have checked the intent and the wording of the 

final document submitted by Mr. Ballo on December 16th, 2011, and this 

document as written meets my approval. I trust that this document 

developed by the DCT subcommittee will meet the approval of all those 

concerned. 

 WISH YOU ALL HAPPY HOLIDAYS AND HAPPY, PEACEFUL, 

HEALTHY AND BRIGHT NEW YEAR 2012. 

With Kind Regards, 

V. B. Tendulkar 

-----Original Message----- 

From: Timothy Ballo [mailto:tballo@earthjustice.org] 

Sent: Friday, December 16, 2011 10:09 PM 

To: Freeman, Jeremiah (CONTR); 'rick.anderson@faypwc.com'; 

'ScottB@LVMetals.com'; 'john.caskey@nema.org'; 

'jerry.corkran@cooperindustries.com'; Cymbalsky, John; 

'adelaski@standardsASAP.org'; 'Teckman@nwcouncil.org'; 'gbf1@pge.com'; 

'carlos.gaytan@ge.com'; 'rgreeson@federalpacific.com'; 

'bruce.r.hirsch@bge.com'; 'jhodge@howard.com'; 'mhyland@appanet.org'; 

'dave.millure@metglas.com'; 'snadel@aceee.org'; 

'wes.patterson@us.abb.com'; 'Eric.Petersen@aksteel.com'; 

'Raymond.Polinski@ATImetals.com'; 'artrosenfeld@gmail.com'; 

'srosenstock@eei.org'; 'rroy@nrdc.org'; 'robert.saint@nreca.coop'; 

'chuck.simmons@pgnmail.com'; 'kwinder@mleainc.com'; 'mwaltner@nrdc.org'; 

'jerry.schoen@aksteel.com'; 'Paul.Ryan@hitmet.com'; 

'BermanEconomics@gmail.com'; 'ahofmann@publicpower.org'; 

'pkumar@publicpower.org'; 'bsmith@federalpacific.com'; 

'greg.coulter405@gmail.com'; 'jmauer@standardsasap.org'; Cohen, Daniel; 

'Aaron.Meyers@CooperIndustries.com'; 'Jim.creevy@nema.org'; 

'jrossetti@mlgw.org'; 'cabolduc@lbl.gov'; 'kcoughlin@lbl.gov'; 

'brian.coffey@navigant.com'; 'richardparkerdc@gmail.com'; 
'mrivest@navigant.com'; 'gjrosenquist@lbl.gov'; 

'caitlin.johnson@navigant.com'; 'zhimei.luo@navigant.com'; Marchetti, 

Emily (CONTR); 'charlied@uus.org'; 'DYoung@energy-solution.com'; 

'James.Lass@cleco.com'; 'maheshsampat@bellsouth.net'; 

'phopkinson@hvolt.com'; 'matthew.nardotti@navigant.com'; Raba, Jim; 

Savitz, Maxine (EMAB); 'tpetrosino@carolina.rr.com'; 

'chris.brown@cogentpowerinc.com'; 'ted.johnstone@cogentpowerinc.com'; 

'frank.guilbault@cogentpowerinc.com'; 'ned.efbrush@gmail.com'; 

'dbrender@cda.copper.org'; 'chad.kennedy@us.schneider-electric.com'; 

'eduardorobles@eaton.com'; Tendulkar, Vijay (SISC); 

'thomas.patzner@us.schneider-electric.com'; 

'carlosgsiqueiros@eaton.com'; 'chad.kennedy@schneider-electric.com'; 

'Hyland, Mike'; 'Caskey, John'; 'Robert Greeson'; 

'thomas.patzner@schneider-electric.com'; Kennedy, Irene (SISC); 

'scott.may@siemens.com'; 'Robert.Carmichael@navigant.com'; 

'Christopher.Lau@navigant.com' 

Subject: LVDT Working Group on Data Center Transformers 

All, 

Attached is the product of the LVDT work group tasked with coming up 

with a regulatory approach for low-voltage dry-type transformers 

intended for use in data center applications. Our intent was to 

identify a set of criteria capable of distinguishing data center 

transformers from more typical LVDT units, recognizing the significant 

variation that exists even within the universe of data center 

transformers. We settled on three principal criteria: (1) a nameplate 

designation; (2) a maximum inrush current limit; and (3) any two other 

design attributes from a checklist of potential features. 

The standards recommended are EL0 - retaining the 2010 standard levels 

as is. 

The attached presents a short-term fix, but a long term solution to 

better address these units may need to include an effort to develop a 

testing protocol that better reflects the unique loading profiles of 

data center transformers, so that a future efficiency standard for these 

units can better achieve real-world energy savings. 

Tom Patzner and Vijay Tendulkar deserve the vast majority of the 

credit/blame for the content of the attached. We look forward to 

discussing the proposed approach on Tuesday's call. 

Thanks. 

-Tim Ballo 
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