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- power frequency testing transformator 式频试验变压器
- Power frequency test 工频试验
- Impact in power frequency variation. 频率变化之影响。
- Using Portable power frequency electric quantity test instrument as co ntrolled equipments can measure and control equipments on-line by the pocket PC . 采用便携式工频电量测试仪作为受控设备,利用掌上电脑对受控设备进行在线测量和控制。
- power frequency testing 工频试验
- The test results in this paper show that ZnO arrestor unit with a series gap for transmission lines is able to cut off power frequency current quickly before the circuit breaker operate. 试验研究证实:氧化锌限流元件串联放电间隙能够在断路器动作之前,快速截断工频续流。
- Multifunction for frequency test, period test, crystal oscillation test and frequency calculation. 多功能设计,具测频,测周期,测晶振及计数功能。
- Multifunction for frequency test, period test, crystal oscillation test, frequency calculation and 13M output test. 多功能设计,具测频,测周期,测晶,振计数及特有13M输出测试功能。
- Then the parameterand implement frame of variable frequency test system are dis cussed. 对变频试验系统的参数和实际组件进行了讨论。
- The disconnector shall operator at the power frequency short circuit while MOA's failure under the abnormal conditions. 避雷器带脱离的目的是当避雷器在异常情况下发生故障损坏时,工频短路电流使脱离器工作,脱离器接地端自动脱开,使故障的避雷器与系统脱离,并表明故障避雷器更换。
- Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies (10. 固体电绝缘材料在工业电源频率下的介电击穿电压和介电强度的试验方法(10。
- A review on the study on power frequency electromagnetic field hazards to organisms. 工频电磁场生理危害的研究进展。
- The New Techniques Development of High Voltage High Power Frequency Converter of ABB Co. ABB高压大功率变频器的最新技术发展
- This paper intends to introduce a method of frequency test of various circuits of type 8031 SCP and its application in the comprehensive figure display instrument of tower cranes. 本文介绍8031单片机多路测频的一种方法及其在塔吊综合数显仪中的应用。
- When the frequency changer has malfunction, power frequency is adopted, and the motor speed is nonadjustable. 万一变频器出现故障时,可工频驱动,转速不可调。
- It is pointed out that the power frequency electromagnetic field is inductive field,but not radiation field. 对输变电工程工频电磁场、无线电干扰进行了理论分析,指出输变电工程工频电磁场是感应场,而非辐射场。
- Ultra- low Frequency Test of HV Power Cable 高压电力电缆超低频试验
- The average EEG(AEEG) increased while the average mean power frequency (MPF) and comprexity of EEG decreased in muscle fatigue. 肌肉疲劳过程中平均脑电值(AEEG)均值增加,平均功率频率值(MPF)和脑电信号复杂度[C(n)]均值下降,该现象广泛分布于整个大脑皮层;
- Review neutral line potential shift protecto,rdepict mostly index of power frequency overvoltage 、 undervoltage and electric surge protection. 通过对中性线电位偏移保护器的回顾,简述了中性线电位保护器的设计思想和工频过、欠电压保护的主要指标。
- The principle of arc-suppression coil with three phases and five columns,and theory of power frequency extinguishing arcing were introduced. 介绍了三相五柱式消弧线圈的工作原理,单相电弧接地过电压的工频熄弧理论。
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries