HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 100: HIGH-VOLTAGE ALTERNATING-CURRENT CIRCUIT-BREAKERS (IEC 62271-100:2003, MOD)
This Malaysian Standard is applicable to a.c. circuit-breakers designed for indoor or outdoor installation and for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 000 V.
It is only applicable to three-pole circuit-breakers for use in three-phase systems and single-pole circuit-breakers for use in single-phase systems. Two-pole circuit-breakers for use in single-phase systems and application at frequencies lower than 50 Hz are subject to agreement between manufacturer and user.
This standard is also applicable to the operating devices of circuit-breakers and to their auxiliary equipment. However, a circuit-breaker with a closing mechanism for dependent manual operation is not covered by this standard, as a rated short-circuit making-current cannot be specified, and such dependent manual operation may be objectionable because of safety considerations.
This standard does not cover circuit-breakers intended for use on motive power units of electrical tract
Published
• (none) / (none) / (none)
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24/07/2019
298
NSC 05 - Generation, Transmission & Distribution of Energy
