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Insulators. Tests on indoor post insulators of organic material for systems with nominal voltages greater than 1 kV up to but not including 300 kV
Applicable to post insulators of organic material for indoor service in electrical installations or equipment operating in air at atmospheric pressure on alternating current with a nominal voltage greater than 1 000 V up, but not including, 300 kV, as defined by range I of IEC 60071-1, and a frequency not greater than 100 Hz.
Composite insulators are not covered by this standard.
To define the electrical and mechanical characteristics and to prescribe methods of testing and acceptance criteria.
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