. /.   WORLD TRADE  
ORGANIZATION  G/TBT/N/MEX/177 
7 August 2009 
 (09-3833) 
Committee on Technical Barriers to Trade Original:   Spanish 
  
 
NOTIFICATION 
 
The following notification is being circ ulated in accordance with Article 10.6. 
 
1. Member to Agreement notifying:  MEXICO
 
If applicable, name of local government involved (Articles 3.2 and 7.2):  
2. Agency responsible:   Secretaría de Energía  (Ministry of Energy) 
Name and address (including telephone and fax numbers and e-mail and website 
addresses, if available) of  agency or authority designated to handle comments 
regarding the notification shall be  indicated if different from above: 
Comité Consultivo Nacional de Norma lización de Instalaciones Eléctricas
(National Advisory Committee on Electri cal Installation Standardization) 
Secretaría de Energía  (Ministry of Energy) 
Insurgentes Sur 890, 8o piso 
Colonia del Valle, Delegación Benito Juárez 
Código postal 03100 
México, Distrito Federal, México Tel.: 5000-6126 Fax: 5000-6140 E-mail: lortiz@energia.gob.mx 
Website: http://www.energia.gob.mx
 
3. Notified under Article 2.9.2 [ X], 2.10.1 [ ], 5.6.2 [ ], 5.7.1 [ ], other:  
4. Products covered (HS or CCCN where applicable, otherwise national tariff heading.  
ICS numbers may be provided in addition, where applicable):  Distribution 
transformers 
5. Title, number of pages and lang uage(s) of the notified document:  
PROY-NOM-002-SEDE-2007, Requisitos de se guridad y eficiencia energética para 
transformadores de distribución (Draft Mexican Official Standard 
PROY-NOM-002-SEDE-2007:  Safety and energy efficiency requirements for distribution 
transformers) (8 pages, in Spanish).  
6. Description of content:   The notified draft Standard lays down the minimum safety and 
energy efficiency requirements for distributio n transformers and the testing methods for 
verifying compliance with these requirements. 
The draft Standard applies to the following t ypes of domestically manufactured or imported 
distribution transformers intended for the end consumer and marketed in Mexico:  
pole-mounted, substation, pad-m ounted and submersible (in accordance with the definitions 
set out in section 3 of the Standard) which are self-cooled using insulating fluid.  It also applies to distribution transformers whic h are repaired, rebuilt or reinstalled. G/TBT/N/MEX/177 
Page 2  
 
  7. Objective and rationale, including the nature of urgent problems where applicable:   - 
8. Relevant documents:   Diario Oficial de la Federación  (Official Journal) of 17 June 2009.  
Available at:  http://www.dof.gob.mx  
9. Proposed date of adoption: 
Proposed date of entry into force: }The notified Standard will enter into force 180 calendar days after publication in the Official Journal. 
10. Final date for comments:   60 calendar days from publication of the draft. 
11. Texts available from:  National enquiry point [ X] or address, telephone and fax 
numbers, E-mail and website addresses,  if available, of other body:  
Dirección General de Normas de la Secretaría de Economía  
(General Directorate of Standards of the Ministry of the Economy) 
Tel.: (+52) 55 5729 9300, Ext. 43217 
Fax: (+52) 55 5520 9715 
Website: http://www.economia-noms.gob.mx/  
E-mail: normasomc@economia.gob.mx  
Text available at:  http://members.wto.o rg/crnattachments/2009/tbt/mex/09_2736_00_s.pdf