共找到 2218 条与 基础标准和通用方法 相关的标准,共 148 页
接触点和连接件在预期寿命期间的良好性能取决于许多参数,其中某些参数是由其设计决定(如型式、材料、力等);另一些参数则由对其有影响的环境决定。考虑环境的影响,特别要注意大气中所含(通常含量很少)的污染物。在城市和工业大气中二氧化硫是最主要的污染物之一。
Basic environmental testing procedures for electric and electronic products--Guidance for sulphur dioxide test for contacts and connections
本标准适用于可能受到下述试验情况的所有电气和电子元器件。
Basic environmental testing procedures for electric and electronic products--Test T: soldering
确定产品在低温、低气压和湿热所组成的连续综合环境下的适应性。 本试验的对象是装在飞行器中没有温度控制和不增压区域的产品。
Electric and electronic products--Basic environmental test regulations for electricians--Test Z/AMD: The successive integrated low temperature/low atmospheric pressure/damp-heat method
确定含有硫化氢的大气对下面材料制成的接触点和连接件的接触特性的影响. 银或银合金: 有其它保护层的银; 用银或银合金覆盖的金属。 检查用上述材料做成的包式或卷式的连接件的紧密性和有效性。 在所有试验中,主要根据试验样品在含有硫化氢大气中暴露所引起的接触电阻的变化值进行性能评定.
Electric and electronic products--Basic environmental test regulations for electricians--Test Kd:The hydrogen sulfide method at the point of contact and the connecting element
确定含有二氧化硫的大气对贵金属制的或有贵金属镀层的接触点的接触特性的影响。但不包括银和某些银合金。 检查包式的或卷式的连接件的紧密性和有效性。 在所有试验中,主要根据在含有二氧化硫大气中引起的接触电阻的变化值进行性能评定。
Electric and electronic products--Basic environmental test regulations for electricians--Test Kc: The sulphur dioxide method at the point of contact and the connecting element
温度变化试验的目的,在于确定一次或连续多次的温度变化对试验样品的影响。而不适用于仅仅是考核高温或低温的影响作用的试验,即不用作评定在两种极端温度的稳定状态下工作时,产品的电气、机械性能或材料的性能变化。
Electric and electronic products--Basic environmental test regulations for electricians--Guidelines for temperature variation tests
本标准仅规定电工成套装置中的指示灯和按钮的统一使用颜色。
Colours of indicator lights and push-buttons used in electrical assembly devices
本标准系为在电工成套装置中以导线颜色来标志电路,或依电路去选择导线颜色的统一规定。
Colours of insulated conductors used in electrical assembly devices
本文件规定了低压开关设备和控制设备电压暂降及短时中断耐受能力的测试条件、测试接线及设备要求、测试方法等要求。 本文件适用于额定电压交流1000V及以下开关设备和控制设备的电压暂降及短时中断耐受能力测试。
Technical specifications for voltage sag and short interruption withstand capability testing of electrical equipment Part 2: Low-voltage switchgear and control equipment
Electrician Renewable Energy Terminology
General principles for evaluation of remanufacturability of electronic and electrical products
Electrician Energy Efficiency Terminology
General technical requirements of active voltage sag curing device up to 10 kV
Tesing rules of active voltage sag curing device up to 10 kV
Determination of certain substances in electrotechnical products. Disassembly, disjointment and mechanical sample preparation
Superconductivity. Residual resistance ratio measurement. Residual resistance ratio of cavity-grade Nb superconductors
International Electrotechnical Vocabulary (IEV) - Part 726: Transmission lines and waveguides; Amendment 7
International Electrotechnical Vocabulary (IEV) - Part 131: Circuit theory; Amendment 5
International Electrotechnical Vocabulary (IEV) - Part 715: Telecommunication networks, teletraffic and operation; Amendment 3
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