G/TBT/N/MEX/335  
 
7 December 2016  
(16-6703) Page: 1/2 
Committee on Technical Barriers to Trade  Original: Spanish  
 
  NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6.  
 
1. Notifying Member:  MEXICO  
If applicable, name of local government involved (Articles 3.2 and 7.2):   
2. Agency responsible:  Secretaría de Energía  (Ministry of E nergy ) 
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of  agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:   
Comisión Nacional para el Uso Eficiente de la Energía , CONUEE (National Energy Efficiency 
Commission ) 
Av. Revolución No. 1877, Colonia Loreto  
Delegación Álvaro Obregón  
Ciudad de México C.P. 01090  
Email: ybo.pulido@conuee.gob.mx  and norma.morales@conuee.gob.mx   
Pursuant to  the relevant law,  comments will be considered by the National Advisory 
Committee on Standardization for the Conservation and Rational Use of Energy Resources 
(Comité  Consultivo Nacional de Normalización para la Preservación y Uso Racional de los 
Recursos Energéticos , CCNNP URRE ).  
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):  External 
power supplies  
5. Title, number of pages and language(s) of the notified document:  Proyecto de 
Norma Oficial Mexicana PROY -NOM-029-ENER -2016, Eficiencia energét ica de fuentes de 
alimentación externa. Límites , métodos de prueba y marcado  (Draft Mexican Official 
Standard PROY -NOM-029-ENER -2016: Energy efficiency of external power supplies . Limits, 
test methods and marking ) (21 pages , in Spanish ) 
6. Description of content:  The use of external power supplies  (EPSs) that draw electricity 
from the mains has seen a sharp  increase  in recent years  and a standard is therefore 
required  to regulate both active -mode  and no-load-mode  electric power consumption , with 
a view to  reducing  such consumption  and thereby  helping to pre serve non-renewable 
natural resources . 
7. Objective and rationale, including the nature of urgent problems where 
applicable:  The purpose of the notified draft Mexican Official Standard is to establish the 
minimum active -mode energy efficiency levels  and maximum no-load-mode power limits, 
together with  the test methods for  assessing compliance with these values , and the 
minimum marking requirements for external power supplies  (EPSs) that are designed  to 
convert  alternating -current (AC) line voltage into a single  fixed direct -current (DC) output 
voltage at a time  with an output power not exceeding 250 W, as physically determined by 
their design ; that are  separate from the device that constitutes the primary load; and that 
are marketed, distributed or supplied  for the purpose of sale , either individually or as part 
of an end-use product , within the territory of the United Mexican States . Certain  EPS units 
are switch -selectable  and allow users to choose from mo re than one  output voltage . G/TBT/N/ MEX/335  
 
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  8. Relevant documents:   
 Mexican Official Standard NOM-008-SCFI-2002: Sistema general de unidades de 
medida  (General system of units of measurement ); 
 Mexican Official Standard NOM-024-SCFI-2013: Información comercial para empaqu es, 
instructivos y garantías de los productos electrónicos, eléctricos y electrodomésticos  
(Commercial information to be displayed on the packaging of and included in the 
instructions and guarantees for electronic, electrical and home electrical appliances ); 
 Mexican Official Standard NOM-032-ENER -2013: Límites máximos de potencia eléctrica 
para equipos y aparatos que demandan energía en espera. Métodos de prueba y 
etiquetado  (Maximum electrical power limits for equipment and appliances requiring 
standby pow er. Test methods and labelling ). 
9. Proposed date of adoption:  Not applicable  
Proposed date of entry into force: The notified draft Mexican Official Standard will enter 
into force 120 calendar days after its publication as a final Standard ; as from this d ate all 
external power supplies  covered by PROY -NOM-029-ENER -2016 must be certified on the 
basis of this Standard . 
10. Final date for comments:  60 calendar days as from  5 December 2016  
11. Texts available from:  National enquiry point [ X] or address, tele phone and fax 
numbers  and email and website addresses, if available , of other body:   
Secretaría de Economía  
Subsecretaría de Competitividad y Normatividad  
Dirección General de Normas  
Tel.: (+52) 55 5729 9100, Ext. 43217  
Fax: (+52) 55 5520 9715  
Email: normasomc@economia.gob.mx  and/or sofia.pacheco@economia.gob.mx   
Website: http://www.economia -noms.gob.mx/ ?P=144   
Text available at: 
http://www.dof.gob.mx/nota_detalle.php?codigo=5464009&fecha=05/12/2016   
https://members.wto.org/crnattachments/2016/TBT/MEX/16_5020_00_s.pdf