GB/T 19519-2014
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 (English Version)

Standard No.

GB/T 19519-2014

Language

Chinese, Available in English version

Release Date

2014

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 19519-2014

Replace

GB/T 19519-2004

Scope

This standard specifies the definition, test methods and acceptance criteria of composite insulators (hereinafter referred to as insulators) for AC overhead lines. This standard applies to composite insulators for AC lines, substation suspension and tension, but these insulators may also be subject to compression or bending loads in some occasions, such as when used as interphase spacer bar insulators. Insulators consist of insulating mandrels, sheaths and end fittings. The load bearing mandrel is made of resin impregnated fiberglass, the sheath is made of polymer material and the end fittings are permanently mounted on the insulating mandrel. Part of this standard applies to hybrid composite insulators whose core rods are made of the same insulating material (such as porcelain, resin), see Chapter 7 for details. The ambient temperature of the insulator installation site is generally between -40 ℃ and +40 ℃. This standard does not apply to line post insulators. This standard does not include requirements for the selection of insulators for specific operating conditions.

GB/T 19519-2014 Referenced Document

• GB/T 1001.1-2003 Insulators for overhead lines with a nominal voltage above 1000V Part 1: Ceramic or glass insulator units for a.c.systems--Definitions,test methods and acceptance criteria
• GB/T 1001.2-2010 Insulators for overhead lines with a nominal voltage above 1000V.Part 2:Insulator strings and insulator sets for a.c. systems.Definitions,test methods and acceptance criteria
• GB/T 16422.1-2006 Plastics. Methods of the exposure to laboratory light sources. Part 1: General guidance
• GB/T 16422.2-2014 Plastics.Methods of exposure to laboratory light sources.Part 2:Xenon-arc sources*， 2014-07-08 Update
• GB/T 18851.1-2012 Non-destructive testing.Penetrant testing.Part 1:General principles
• GB/T 18851.4-2005 Non-destructive testing.Penetrant testing.Part 4:Equipment
• GB/T 21421.1-2008 Composite string insulator units for overhead lines with a nominal voltage greater than 1000V.Part 1:Standard strength classes and end fittings
• GB/T 22079-2008 Polymeric insulators for indoor and out door use with a nominal voltage >1000 V. General definitions, test methods and acceptance criteria
• GB/T 24622-2009 Guidance on the measurement of wettability of insulator surfaces
• GB/T 24623-2009 Radio interference test on high-voltage insulators
• GB/T 2900.8-2009 Electrotechnical terminology.Insulators
• GB/T 5169.16-2008 Fire hazard testing for electric and electronic products.Part 16:Test flames.50W horizontal and vertical flame test methods
• GB/T 6553-2003 Test methods for evaluating resistance to tracking and erosion of electrical insulating materials used under severe ambient conditions

GB/T 19519-2014 history

• 2014 GB/T 19519-2014 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
• 2004 GB/T 19519-2004 Composite insulators for a.c.overhead lines with a nominal voltage greater than 1000V---Definitions,test methods and acceptance criteria