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This part of IEC 60383 applies to insulator strings and insulator sets comprising string insulator of ceramic, glass, or polymeric material for use on .AC and DC overhead power lines with AC voltage greater than 1 000 V and a frequency not greater than 100 Hz and DC voltage greater than 1 500 V. It also applies to insulator strings and insulator sets comprising RTV coated insulators and hybrid insulators.
It also applies to insulator strings and insulator sets of similar design when used in substations.
It also applies to other types of assemblies, such as horizontal V assemblies and jumper support insulators.
The object of IEC 60383-2 is to prescribe standard electrical test procedures and acceptance criteria to verify the defined characteristics of insulator strings and insulator sets.
These tests and characteristics are intended to give a common base to designers, purchasers and manufacturers of overhead lines, insulators and line equipment when definition, evaluation or verification of the electrical characteristics of such equipment is required. Since this test is classified in type test, they are normally only when the design is changed. The results of type tests are recorded as evidence of compliance with design requirements. There is no time limit for the validity of certificates for electrical type tests.
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