G/TBT/N/ECU/482/Rev.1  
8 April 2021 
(21-2906) Page: 1/3 
Committee on Technical Barriers to Trade  Original:  Spanish  
 
  
NOTIFICATION  
Revision  
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 Quality)  
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  
puntocontactoECU@gmail.com  
jmarino@produccion.gob.ec  
cyepez@produccion.gob.ec  
jsanchezc@produccion.gob.ec  
Website: www.produccion.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) : Liquid 
dielectric transformers having a power handling capacity not exceeding 650 kVA (HS 
850421)  
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 par a Transformadores de Distribución"  (Draft second 
revision (2R) of Ecuadorian Technical Regulation PRTE INEN No. 141 "Safety and energy 
efficiency requirements for distribution transformers") (15 pages, in Spanish)  G/TBT/N/ECU/482/Rev.1  
- 2 - 
  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 following products:  
• Pole-mounted, substation, pad -mounted, submersible and dry -type distribution 
transformers.  
• Single -phase transformers having a power handling capacity between 3 kVA and 
167 kVA, with a medium -voltage insulation class not exceeding 34.5 kV and 
low-voltage insulation class not exceeding 1.2 kV.  
• Three -phase transformers having a power handling capacity between 15 kVA 
and 2,000 kVA.  
7. Objective and rationale, including the nature of urgent problems where  
applicable : Prevention of deceptive practices and 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 pr oduct certification schemes.  
4. ISO 2859 -1:1999+Amd 1:2011, Sampling procedures for inspection by 
attributes - Part 1 : Sampling schemes indexed by acceptance quality limit (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 . 
Definiciones . 
7. NTE I NEN 2111  (2R):2013,  Transformadores de Distribución . Pruebas eléct ricas. 
8. NTE I NEN 2112  (1R):2013,  Transformadores . Devanados y sus derivaciones . 
Requisitos . 
9. NTE I NEN 2114  (2R):2004,  Transformadores monofásicos de corriente sin 
carga, pérdidas y voltaje de cortocircuito . 
10. NTE I NEN 2115  (2R):2004,  Transformadores de distribución nuevos trifásicos . 
Valores de corriente sin carga, pérdidas y voltaje de cortocircuito . 
11. NTE I NEN 2116  (1R):2013,  Transformadores . Impedancia y pérdidas con carga . 
12. NTE I NEN 2120 :1998,  Transformadores . Requisitos . 
13. NTE I NEN 2126 (1R):2013 , Transformadores . Límites de calentamiento . 
14. NTE I NEN 2128  (1R):2013,  Transformadores . Requisitos de funcionamiento en 
condiciones de altitud y temperatura diferentes de las normalizadas . 
15. NTE I NEN 2130  (1R):2013,  Transformadores . Placa de car acterísticas . 
16. NTE I NEN 2139  (1R):2013,  Transformadores monofásicos . Accesorios . 
17. NTE I NEN 2140  (1R):2013+Corrigendum 1:2014, Transformadores 
monofásicos . Accesorios . G/TBT/N/ECU/482/Rev.1  
- 3 - 
  18. NTE I NEN 2683 :2014, Transformadores de distribución trifásicos tipo pedestal, 
autorefrigera dos. Requisitos . 
19. NTE I NEN 2684 :2013,  Transformadores de distribución trifásicos tipo pedestal, 
autorefrigerados . Requisitos . 
20. 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:  
G/TBT/N/ECU/482  
9. Proposed date of adoption 60 days from notification or thereafter  
Proposed date of entry into force : Six months 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  
puntocontactoECU@gmail.com  
jmarino@produccion.gob.ec  
cyepez@produccion.gob.ec  
jsanchezc@produccion.gob.ec  
www.normalizacion.gob.ec  
https://members.wto.org/crnattachments/2021/TBT/ECU/21_2508_00_s.pdf