GB/Z 28818-2012
Selection guide for polymeric materials for outdoor use under HV stress (English Version)

Standard No.

GB/Z 28818-2012

Language

Chinese, Available in English version

Release Date

2012

Published By

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

Latest

GB/Z 28818-2012

Scope

This guiding technical document specifies the important material properties of polymer insulation materials for outdoor use, and lists the standard test methods with minimum requirements where applicable for the material. If there is no applicable standard test method, refer to the test method summarized in this guidance technical document. This guidance technical document applies to outdoor high-voltage polymer insulation materials with a system voltage higher than 1000V AC voltage, and also includes applications where the housing is an integral part of the equipment, such as in lightning arresters and cable terminals. The scope of this guidance technical document is limited to these materials. The performance of an insulator depends on several factors, such as the type of material, design, environmental conditions, etc. Therefore, when selecting materials, it is necessary to meet the following requirements, but this does not guarantee that the performance of the material is up to standard when used for outdoor insulation.

GB/Z 28818-2012 Referenced Document

• GB/T 1034-2008 Plastics.Determination of water absorption
• GB/T 1408.1-2006 Electrical strength of insulating materials-Test methods-Part 1:Tests at power frequencies
• GB/T 1410-2006 Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials
• GB/T 1411-2002 Dry,solid insulating materials--Resistance test to high-voltage,low-current arc discharges
• GB/T 16422.2-1999 Plastics--Methods of exposure to laboratory light sources Part 2: Xenon--arc sources
• GB/T 19466.2-2004 Plastics-Differential scanning calorimetry(DSC)-Part 2:Determination of glass transition temperature
• GB/T 22567-2008 Electrical insulating materials.Methods of test for determination of the glass transition temperature
• 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
• IEC 60250 Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including meter wavelengths
• IEC 60455-2:1977 Specification for solventless polymerisable resinous compounds used for electrical insulation. Part 2 : Methods of test
• IEC 61109 Insulators for overhead lines - Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1000 V - Definitions, test methods and acceptance criteria
• IEC 62217 Polymeric HV insulators for indoor and outdoor use - General definitions, test methods and acceptance criteria
• ISO 11359-2:1999 Plastics - Thermomechanical analysis (TMA) - Part 2: Determination of coefficient of linear thermal expansion and glass transition temperature
• ISO 34-1:2004 Rubber, vulcanized or thermoplastic - Determination of tear strength - Part 1: Trouser, angle and crescent test pieces
• ISO 4892-3 Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps*， 2016-02-01 Update
• ISO 4892-4:2004 Plastics - Methods of exposure to laboratory light sources - Part 4: Open-flame carbon-arc lamps

GB/Z 28818-2012 history

• 2012 GB/Z 28818-2012 Selection guide for polymeric materials for outdoor use under HV stress