G/TBT/N/ECU/482  
11 June 2020 
(20-4160) Page: 1/3 
Committee on Technical Barriers to Trade  Original:  Spanish  
 
  NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6.  
 
1. Notifying Member : ECUADOR  
If applicable, name of local government involved (Articles 3.2 and 7.2):  
2. Agency responsible:  
Servicio Ecuatoriano de Normalización , INEN (Ecuadorian Standardization Service)  
Calle Baquerizo Moreno E8 -29 y Diego de Almagro  
Tel.: (+593 -2) 3825960 to 90  
Website: www.normalizacion.gob.ec  
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:  
Subsecretaría de Calidad  (Under -Secretariat for Qua lity) 
Ministerio de Producción, Comercio Exterior, Inversiones y Pesca , MPCEIP (Ministry of 
Production, Foreign Trade, Investment and Fisheries)  
Address : Av. Amazonas entre Unión Nacional de Periodistas y Alfonso Pereira, Piso 8, 
Bloque amarillo  
Tel.: (+593 -2) 3948760, Ext. 2254 - 2272 
Email: puntocontacto -OTCECU@produccion.gob.ec ; puntocontactoOTCECU@gmail.com ; 
jmarino@produccion.gob.ec ; cyepez@produccion.gob.ec ; jsanchezc@produccion.gob.ec  
Website : www.industrias.gob.ec  
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) : Having a 
power handling capacity no t exceeding 650 kVA (HS 850421) ; Having a power handling 
capacity exceeding 650 kVA but not exceeding 10,000 kVA (HS 850422) ; Having a power 
handling capacity exceeding 1 kVA but not  exceeding 16 kVA (HS 850432) ; Having a 
power handling capacity exceeding 500 kVA (HS 850434)  
5. Title, number of pages and language(s) of the notified document : Proyecto de 
Segunda Revisión del Reglamento Técnico Ecuatoriano PRTE I NEN 141  (2R) "Requisitos de 
seguridad y eficiencia energética para transformadores de distribució n" (Draft second 
revision (2R) of Ecuadorian Technical Regulation PRTE INEN No. 141 "Safety and energy 
efficiency requirements for distribution transformers") (16 pages, in Spanish)  G/TBT/N/ECU/482  
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  6. Description of content : The notified Ecuadorian Technical Regulation establishes the 
requirements to be met by distribution transformers, prior to the marketing of domestic 
and imported products, with the aim of protecting human safety and the environment, and 
preventing deceptive practices.  
It applies to the fol lowing products:  
1. Pole-mounted, substation, pad -mounted, submersible and dry -type distribution 
transformers.  
2. Single -phase transformers having a power handling capacity between 3 kV A and 167 
kVA, with a medium -voltage insulation class not exceeding 34.5 kV a nd low -
voltage insulation class not exceeding 1.2 kV.  
3. Three -phase transformers having a power handling capacity between 15 kV A and 
2,000 kV A, with a medium -voltage insulation class not exceeding 34.5 kV and low -
voltage insulation class not exceeding 1.2 kV . 
7. Objective and rationale, including the nature of urgent problems where 
applicable : Prevention of misleading practices ; consumer protection ; protection of human 
health and safety ; protection of the environment.  
8. Relevant documents:  
Normative references:  
1. ISO/IEC 17025 :2017, General requirements for the competence of testing and 
calibration laboratories;  
2. ISO/IEC 17050 -1:2004, Conformity assessment - Supplier's declaration of 
conformity - Part 1 : General requirements;  
3. ISO/IEC 17067 :2013, Conformity assessment - Fundamentals of product certification 
and guidelines for product certification schemes;  
4. ISO 2859 -1:1999+Amd 1:2011, Sampling procedures for inspection by attributes - 
Part 1 . Sampling schemes indexed by acceptance quality lim it (AQL) for lot -by-lot 
inspection;  
5. Mexican Official Standard NOM -002-SEDE/ENER -2014:2014, Requisitos de seguridad 
y eficiencia energética para transformadores de distribución ; 
6. Ecuadorian Technical Standard NTE I NEN 2110  (1R):2013, Transformadores . 
Definic iones; 
7. Ecuadorian Technical Standard NTE I NEN 2111  (2R):2013, Transformadores de 
Distribución . Pruebas eléctricas ; 
8. Ecuadorian Technical Standard NTE I NEN 2112  (1R):2013, Transformadores . 
Devanados y sus derivaciones . Requisitos ; 
9. Ecuadorian Technical Standa rd NTE I NEN 2114  (2R):2004, Transformadores 
monofásicos de corriente sin carga, pérdidas y voltaje de cortocircuito ; 
10. Ecuadorian Technical Standard NTE I NEN 2115  (2R):2004, Transformadores de 
distribución nuevos trifásicos . Valores de corriente sin carga, pérdidas y voltaje de 
cortocircuito ; 
11. Ecuadorian Technical Standard NTE I NEN 2116  (1R):2013, Transformadores . 
Impedancia y pérdidas con carga ; 
12. Ecuadorian Technical Standard NTE I NEN 2120 :1998, Transformadores . 
Requisitos ; 
13. Ecuadorian Technical Standar d NTE I NEN 2126  (1R):2013, Transformadores . 
Límites de calentamiento ; 
14. Ecuadorian Technical Standard NTE I NEN 2128  (1R):2013, Transformadores . 
Requisitos de funcionamiento en condiciones de altitud y temperatura diferentes de G/TBT/N/ECU/482  
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  las normalizadas ; 
15. Ecuadorian Te chnical Standard NTE I NEN 2130  (1R):2013, Transformadores . Placa 
de características ; 
16. Ecuadorian Technical Standard NTE I NEN 2139  (1R):2013, Transformadores 
monofásicos . Accesorios ; 
17. Ecuadorian Technical Standard NTE I NEN 2140  (1R):2013+Corrigendum 1:2014, 
Transformadores monofásicos . Accesorios ; 
18. Ecuadorian Technical Standard NTE I NEN 2683 :2014, Transformadores de 
distribución monofásicos tipo pedestal, auto refrigerados . Requisitos ; 
19. Ecuadorian Technical Standard NTE I NEN 2684 :2013, Transformadores de 
distribución trifásicos tipo pedestal, autorefrigerados . Requisitos ; 
20. Ecuadorian Technical Standard NTE INEN -IEC 60076 -3:2019, Transformadores de 
potencia . Parte 3 : Niveles de aislamiento, ensayos dieléctricos y distancias de 
aislamiento en el aire . 
Notification history:  
1. G/TBT/N/ECU/181  
2. G/TBT/N/ECU/181/Add.1  
3. G/TBT/N/ECU/181/Add.2  
4. G/TBT/N/ECU/181/Add.3  
9. Proposed date of adoption : 60 days from the date of notification  
Proposed date of entry into force : 180 days from the date of adoption  
10. Final date for comments : 60 days from notification  
11. Texts available from : National Enquiry Point [X] or address, telephone and fax 
numbers and email and website addresses, if available, of other body:  
Contact and/or National Enquiry Point:  
Subsecretaría de Calidad  
Ministerio de Producción, Comercio Exterior, Inversiones y Pesca  (MPCEIP)  
Address : Av. Amazonas entre Unión Nacional de Periodistas y Alfonso Pereira, Piso 8, 
Bloque amarillo  
Tel.: (+593 -2) 3948760, Ext. 2254 - 2272 
Email: puntocontacto -OTCECU@produccion.gob.ec ; puntocontactoOTCECU@gmail.com ; 
jmarino@produccion.gob.ec ; cyepez@produccion.gob.ec ; jsanchezc@produccion.gob.ec  
www.normalizacion.gob.ec  
https://members.wto.org/crnattachments/2020/TBT/ECU/20_3693_00_s.pdf