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1)  over-current at power frequency
工频过电流
2)  industrial frequency current
工频电流
1.
From the experiment result,the system could revert current wave and precisely measure the amplitude of industrial frequency current.
设计出以罗哥夫斯基线圈为传感器,加有相位比较环节的工频电流测量系统。
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3)  power frequency overvoltage
工频过电压
1.
During the restoration of black-out in the power system,the power frequency overvoltage caused by the capacitive effect of a non-loaded long overhead lines and the switching overvoltage by closing non-loaded long overhead lines are important factors to establish the restoration scheme.
在电力系统发生大停电事故后的恢复过程中,控制启动方案中的重要因素即充电空载长线路时的工频过电压与合闸空载长线路时的操作过电压,分析了电压源换流器直流输电(VSC-HVDC)技术用于联网的优势,及由空载长线路电容效应引起的工频过电压与合闸空载线路引起的操作过电压的形成机理;提出利用联网的VSC-HVDC抑制空载长线路工频过电压与操作过电压的概念以及相应的过电压控制策略与系统并建立了联网的VSC-HVDC启动空载线路的数学模型。
2.
The power frequency overvoltage of unloaded line because of the capacity effect is studied,and the effect of eliminating power frequency overvoltage using shunt reactors is analyzed.
讨论了空载线路在电容效应下产生的工频过电压,并对并联电抗器抑制工频过电压的作用进行了理论分析。
3.
The results show tha t the power frequency overvoltage and switching overvoltage are all within the limita-tion of design criteria if the line is around200km,so it needs no speci al means to limit these overvoltages except some shunt reactors added on the lin e.
建立了一个110kV长线供电系统模型,用软件EMTP对该系统进行了工频过电压和操作过电压的计算。
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4)  power frequency over-voltage
工频过电压
1.
Analysis of power frequency over-voltage for unloaded lines by using PSCAD/EMTDC
基于PSCAD/EMTDC软件的空载线路工频过电压分析
2.
The power frequency over-voltage,the secondary arc current,and the recovery voltage of the lines with different tower types and various phase order arrangement are studied under different system operational modes.
介绍了几种塔型结构、相序布置在不同系统运行方式下的线路工频过电压、潜供电流和恢复电压的研究情况,分析了塔型和相序变化对工频过电压和潜供电流的影响,并提出了结论和建议。
3.
The ZnO varistor is tested for the performance of the clamping voltage and power frequency over-voltage withstanding time.
对氧化锌压敏电阻器的限制电压和工频过电压耐受时间的试验测试,结果表明,相同型号的氧化锌压敏电阻器,其限制电压越高,则耐受工频过电压的时间越长。
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5)  current shock withstanding
耐工频电流
1.
In order to ensure the requirement of the current shock withstanding feature measurement in the PTCR producing flow, this paper has mentioned the research of multiple-channel automated current shock withstanding tester for PTCR.
为满足PTCR生产中耐工频电流冲击特性测试的要求,研制了多工位PTCR耐工频电流冲击特性测试仪。
6)  high power frequency current
工频大电流
补充资料：儤工
1.服劳役超过法定数量的佣工。
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