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roperties;Relays;Remote control switches;Specification (approval);Switchgear;Test apparatus;Test certificates;Testing;Time switches【摘要】: This International Standard applies to electromechanical air break contactors for householdand similar purposes provided with main contacts intended to be connected to circuits therated voltage of which does not exceed 440 V a.c. (between phases) with rated operationalcurrents less than or equal to 63 A for utilization category AC-7a and 32 A for utilizationcategories AC-7b and AC-7c, and rated conditional short-circuit current less than or equal to6 kA.The contactors dealt with in this standard are not normally designed to interrupt short-circuitcurrents. Therefore, suitable short-circuit protection (see 9.3.4) shall form part of theinstallation.This standard does not apply to– contactors complying with IEC 60947-4-1;– semiconductor contactors;– contactors designed for special applications;– auxiliary contacts of contactors. These are dealt with in IEC 60947-5-1.This standard states1) the characteristics of contactors.2) the conditions with which contactors shall comply with reference to:a) their operation and behaviour;b) their dielectric properties;c) the degrees of protection provided by their enclosures, where applicable;d) their construction;e) their electromagnetic compatibility characteristics.3) the tests intended for confirming that these conditions have been met, and the methods tobe adopted for these tests.4) the test sequences and the number of samples.5) the information to be given with contactors or in the manufacturer's literature.【中国标准分类号】: K31【国际标准分类号】: 29_120_99;29_130_20【页数】: 132P.;A4【正文语种】: 英语          | 欢迎光临 世界资料网论坛 (http://bbs.infoeach.com/) | Powered by Discuz! X2.5 |