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STANDARD|COMPOSITE INSULATORS FOR MEDIUM VOLTAGE LINES(1)

COMPOSITE INSULATORS FOR MEDIUM VOLTAGE LINES STANDARD (1)

1 SCOPE
The aim of this document is to provide technical requirements for the supply of MV composite insulators to
be used in the MV lines of the distribution networks of Enel Group Distribution Companies, listed below:
 Enel Distribución Colombia Colombia
 Enel Distribución Peru Perú
 Edesur Argentina
 E-distributie Banat Romania
 E-distributie Dobrogea Romania
 E-distributie Muntenia Romania
 E-distribuzione Italy
 Endesa Distribución Eléctrica Spain
 Enel Distribución Chile Chile
 Enel Distribuição Ceará Brazil
 Enel Distribuição Rio Brazil
 Enel Distribuição Goiás Brazil
This document specifies the characteristics and tests that must be accomplished by the composite insulators
used in the medium voltage distribution network.
Additional prescriptions or integration of the main common part are reported in Local Sections with the same
corresponding clause or sub-clause number.
The local standards replaced by this standard appear in the local section.

2 REFERENCE LAWS AND STANDARDS
The list of reference laws and standards are mentioned below in this document.
2.1 Laws
Brazil
 NR-10 - Segurança em Instalações e Serviços em Eletricidade
Chile
 NSEG5. E.n.71 Reglamento de Instalaciones Eléctricas de Corrientes Fuertes.
Colombia
 RETIE, Reglamento Técnico de Instalaciones Eléctricas.
Peru
 Código Nacional de Electricidad – Suministro 2011.
Romania
 NTE 001/03/00 – Normativ privind alegerea izolației, coordonarea izolației și protecția instalațiilor
electroenergetice împotriva supratensiunilor
 NTE 003/04/00 – Normativ pentru construcția liniilor electrice aeriene de energie electrică cu
tensiuni peste 1000 V
Spain
 R.D. 614/2001, de 8 de junio, sobre disposiciones mínimas para la protección de la salud y
seguridad de los trabajadores frente al riesgo eléctrico.
 R.D. 337/2014, de 9 de mayo, por el que se aprueban el Reglamento sobre condiciones
técnicas y garantías de seguridad en instalaciones eléctricas de alta tensión y sus Instrucciones
Técnicas Complementarias ITC-RAT 01 a 23.
 R.D. 223/2008, de 15 de febrero, por el que se aprueban el Reglamento sobre condiciones
técnicas y garantías de seguridad en líneas eléctricas de alta tensión y sus instrucciones
técnicas complementarias ITC-LAT 01 a 09.
2.2 Standards
The following standards are needful for the application of this Global Standard.
- CIGRE 33-204. Considerations on the design of composite suspension insulators based on
experience from natural ageing testing and electric field calculations.
- IEC 60071-1. Insulation co-ordination - Part 1: Definitions, principles and rules.
- IEC 60071-2. Insulation co-ordination - Part 2: Application guide.
- IEC 60383-1. Insulators for overhead lines with a nominal voltage above 1000 V - Part 1: Ceramic or
glass insulator units for a.c. systems - Definitions, test methods and acceptance criteria. (Zinc
Coating Test).
- IEC 60383-2. Insulators for overhead lines with a nominal voltage above 1000 V - Part 2: Insulator
strings and insulator sets for a.c. systems – Def, test methods and acceptance criteria.
- IEC 60587. Electrical insulating materials used under severe ambient conditions - Test methods for
evaluating resistance to tracking and erosion.
- IEC 60695-11-10. Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame
test methods.
- IEC 60815-1. Selection and dimensioning of high-voltage insulators intended for use in polluted
conditions - Part 1: Definitions, information and general principles.
- IEC 60815-3. Selection and dimensioning of high-voltage insulators intended for use in polluted
conditions - Part 3: Polymer insulators for a.c. systems.
- IEC 61109. Insulators for overhead lines - Composite suspension and tension insulators for a.c.
systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance
criteria.
- IEC 61621. Dry, solid insulating materials - Resistance test to high-voltage, low-current arc
discharges.
- IEC 61466 -1. Composite string insulator units for overhead lines with a nominal voltage greater than
1000 V - Part 1: Standard strength classes and end fittings.
- IEC 61466 -2. Composite string insulator units for overhead lines with a nominal voltage greater than
1000 V - Part 2: Dimensional and electrical characteristics.
- IEC 61952. Insulators for overhead lines - Composite line post insulators for A.C. systems with a
nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria
- IEC 62631. Dielectric and resistive properties of solid insulating materials.
- IEC TS 62073. Technical Specification: Guidance on the measurement of wettability of insulator
surfaces.
- IEC 62217. Polymeric HV insulators for indoor and outdoor use - General definitions, test methods
and acceptance criteria.
- ISO 1461. Hot dip galvanized coatings on fabricated iron and steel articles -- Specifications and test
methods.
- ISO 34-1. Rubber, vulcanized or thermoplastic -- Determination of tear strength -- Part 1: Trouser,
angle and crescent test pieces.
- ISO 37. Rubber, vulcanised or thermoplastic. Determination of tensile stress-strain properties
- ISO 868. Plastics and ebonite - Determination of indentation hardness by means of a durometer
(Shore hardness)
- ISO 1183-1. Plastics - Methods for determining the density of non-cellular plastics - Part 1:
Immersion method, liquid pyknometer method and titration method
- IEC/TR 62662 Guidance for production, testing and diagnostics of polymer insulators with respect to
brittle fracture of core materials (and its Spanish transposition to UNE-CLC/TR62662 IN)
2.3 Local standards
See local section
3 SERVICE CONDITIONS
......to be continued

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