NEMA C84.1-2016
电力系统和设备 额定电压（60 赫兹）

Electric Power Systems and Equipment - Voltage Ratings (60 Hertz)

被代替

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标准号

NEMA C84.1-2016

发布

2016年

发布单位

NEMA - National Electrical Manufacturers Association

替代标准

NEMA C84.1-2020

当前最新

NEMA C84.1-2020

 

 

适用范围

This standard establishes nominal voltage ratings and operating tolerances for 60Hz electric power systems above 100 volts. It also makes recommendations to other standardizing groups with respect to voltage ratings for equipment used on power systems and for utilization devices connected to such systems. This standard includes preferred voltage ratings up to and including 1200 kV maximum system voltage@ as defined in the standard. In defining maximum system voltage@ voltage transients and temporary overvoltages caused by abnormal system conditions such as faults@ load rejection@ and the like are excluded. However@ voltage transients and temporary overvoltages may affect equipment operating performance and are considered in equipment application. Purpose The purposes of this standard are to: a) Promote a better understanding of the voltages associated with power systems and utilization equipment to achieve overall practical and economical design and operation b) Establish uniform nomenclature in the field of voltages c) Promote standardization of nominal system voltages and ranges of voltage variations for operating systems d) Promote standardization of equipment voltage ratings and tolerances e) Promote coordination of relationships between system and equipment voltage ratings and tolerances f) Provide a guide for future development and design of equipment to achieve the best possible conformance with the needs of the users g) Provide a guide@ with respect to choice of voltages@ for new power system undertakings and for changes in older ones

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