Insulation system for motors working in ammonia coolant
适用范围:本标准规定了耐氨冷媒电机绝缘系统的组成、技术要求、试验方法和检验规则。本标准适用于1 000 V及以下耐氨冷媒电机绝缘,系统绝缘等级为B级或F级。其它有耐氨冷媒要求的电机产品也可参照执行。
发布日期:2019-12-30 实施日期:2019-12-30
发布日期:2013-01-22 实施日期:2013-01-22
发布日期:2014-02-26 实施日期:2014-02-26
Insulation Co-Ordination Part 2:Application Guide Second Edition
实施日期:1976-01-01
Altitude correction method for external insulation flashover voltage of high voltage power transmission projects
发布日期:2022-10-14 实施日期:2023-05-01
发布日期:2013-01-22 实施日期:2013-01-22
Amendment 1 - International Electrotechnical Vocabulary - Part 442: Electrical accessories
发布日期:2015-02-25 实施日期:2015-02-25
Corrigendum 1:Power installations exceeding 1 kV a.c. Part 1:Common rules
发布日期:2011-03-09 实施日期:2011-03-09
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements
适用范围:This part of IEC 61557 specifies the general requirements for measuring and monitoring equipment for testing the electrical safety in low voltage distribution systems with nominal voltages up to 1 000 ...
发布日期:2007-01-29 实施日期:2007-01-29
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth connectio...
适用范围:This part of IEC 61557 specifies the requirements applicable to equipment for measuring the resistance of earth conductors, protective earth conductors and conductors for equipotential bonding, includi...
发布日期:2007-01-29 实施日期:2007-01-29
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 7: Phase sequence
适用范围:This part of IEC 61557 specifies the requirements for measuring equipment applied to testing the phase sequence in three-phase distribution systems. Indication of the phase sequence may be mechanical, ...
发布日期:2007-01-29 实施日期:2007-01-29
实施日期:2002-03-20
Hinweisblatt ueber Isolierungskoordination. Anwendungshinweisblatt Insulation Co-Ordination Part 2:Application Guide (IEC 71-2:1976) (AMD 7533) March 15,1993 Guide sur la coordination de l'isolement. G...
实施日期:1979-01-01
发布日期:2013-01-22 实施日期:2013-01-22
发布日期:2014-02-26 实施日期:2014-02-26
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 2: Insulation resistance
适用范围:This part of IEC 61557 specifies the requirements applicable to equipment for measuring the insulation resistance of equipment and installations in the de-energized state. This second edition cancels a...
发布日期:2007-01-29 实施日期:2007-01-29
Insulation co-ordination. Part 1 : definitions, priciples and rules.
Low voltage three phase asynchronous motor for closed refrigeration compressor insulation specification
发布日期:2021-12-20 实施日期:2021-12-20
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing,measuring or monitoring of protective measures. Part 15:Functional safety requirements fo...
适用范围:IEC 61557-15:2014 specifies requirements related to functional safety and is based on the IEC 61508 standard series for the realization of Insulation Monitoring Devices (IMD) as specified in IEC 61557-...
实施日期:2014-02-12
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