Low-voltage switchgear and controlgear assemblies - Part 2: Power switchgear and controlgear assemblies
适用范围:IEC 61439-2:2011 defines the specific requirements of power switchgear and controlgear assemblies (PSC-ASSEMBLIES) as follows: - ASSEMBLIES for which the rated voltage does not exceed 1 000 V in case o...
发布日期:2011-08-19 实施日期:2011-08-19
发布日期:2016-09-30 实施日期:2016-09-30
发布日期:2015-12-14 实施日期:2015-12-14
发布日期:2014-05-14 实施日期:2014-05-14
STANDARD TEST METHOD FOR DISSIPATION FACTOR (OR POWER FACTOR) AND RELATIVE PERMITTIVITY (DIELECTRIC CONSTANT) OF ELECTRICAL INSULATING LIQUIDS
适用范围:<p><span class="italic"><span class="italic">Dissipation Factor (or Power Factor)</span>8212;</span>This is a measure of the dielectric losses in an electrical insulating liquid when used in an alterna...
实施日期:2008-11-01
实施日期:2012-02-29
Direct acting indicating analogue electrical measuring instruments and their accessories. Part 5 : special requirements for phase meters, power factor meters and synchronoscopes.
Industrial electroheating equipment. Test methods for infrared emitters
发布日期:2014-10-31 实施日期:2014-10-31
Standard Practice for Preparation of Insulating Paper and Board Impregnated with a Liquid Dielectric
适用范围:<p><span class="italic"><span class="italic">Dissipation Factor and Relative Permittivity</span>8212;</span>Knowledge of these properties is important in the design of electrical equipment such as cabl...
实施日期:1999-05-10
实施日期:2011-12-31
发布日期:2015-12-01 实施日期:2015-12-01
发布日期:2016-09-30 实施日期:2016-09-30
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