T/CES 081-2021 Insulation Test Methods - Part 1: General Test Methods

Scope

Scope: This document specifies the sample installation and testing methods for general insulators. This document is applicable to insulators such as bushings, post insulators, insulating jackets of electrical products, insulator strings and their components, etc. Main technical content: In order to improve the applicability of the standard, according to the classification of insulator products in testing practice, the series of group standards for "Insulator Testing Methods" are divided into three parts: — Part 1: General testing methods; — Part 2: Electrical testing methods; — Part 3: Mechanical testing methods. Among them, Part 1 specifies the sample installation and testing methods for general insulators, including bushings, post insulators, insulating jackets of electrical products, insulator strings and their components, etc. The test procedures and result judgments for appearance and size inspection, shape and position deviation inspection, porosity test, temperature cycle test, thermal shock test, locking pin operation test, zinc coating inspection, and hardness test are included; Part 2 specifies the general electrical testing methods for insulators, including pure porcelain bushings, post insulators, insulating jackets of electrical products, and electrical testing of insulator strings. The general conditions, specimens and their arrangement and installation for impulse voltage test, power frequency voltage test, DC voltage test, radio interference voltage test, visible corona voltage test, artificial pollution test, breakdown voltage test, power frequency arc test, and individual electrical test are specified; Part 3 specifies the sample installation and testing methods for mechanical testing of insulators, including bushings, post insulators, insulating jackets of electrical products, insulator strings and their components. The test procedures for bending load test, tensile load test, torsion load test, compression load test, electromechanical destructive

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