Analysis on the Influence of Connecting Potential Transformer Secondary Polarity Wire on Electric Energy Meter's Measurement 电压互感器副边极性接线对电能表计量影响分析
The Influences and Analyses about PT Secondary Voltage Drop Caused by Energy Meter's Neutral Point Virtual Connection 电能表中性点虚接对电压互感器二次压降的影响分析
This paper presents an optical fiber liquid level meter for tanker applications, which is composed of an optical fiber liquid level sensor, an optical fiber temperature sensor, and a secondary meter. The operating principles of the sensors are described briefly. 光纤油轮液位测试仪由光纤液位传感器、光纤温度传感器及二次仪表组成,本文简要地叙述了光纤液位传感器、光纤温度传感器的工作原理。
It finally puts forward the conditions under which voltage shall be measured regarding the operation of the secondary pressure plate, points for attention out the operation of secondary pressure plate, and recommends the use of high-resistance multi meter. 最后提出二次压板操作哪些情况应该测电压、二次压板操作的注意事项等,推荐用高内阻电压表测量电压。
All of them can be used as secondary standard Rontgen meter and in protection dose measurement. 上述电离室可作次级标准伦琴计和防护剂量测量用。
The secondary meter can be provided with direction decisive circuit so as to avoid errors due to any position movement. 为使其误码率为零,二次仪表采用了可以防止任何位置晃动所引起误差的判向电路。
It is very convenient for the field operators and can be used as a secondary meter in mining industry, the petroleum chemical industry, the metallurgical industry. 该仪器体积小、功能强、精度高,可以广泛适用于电力系统及相关行业继电保护和计量专业、工矿企业、石油化工、冶金企业的二次回路检查。
Secondary loop includes current transformer, voltage transformer, secondary wiring, electronic energy meter and burden monitoring units. 二次回路主要由电流互感器、电压互感器、二次回路、电能表及负荷监控单元组成。
By theoretical deduction of the measuring formula of the break ratio of the secondary harmonic wave, we get the methods of choosing the meter and the corresponding computing formula as well as the setting of the constant value of quick-acting acts times of the difference current. 本文通过对二次谐波制动比的测量公式的理论推导,从推导过程中得出怎样选用仪表和对应的计算公式及差电流速动动作倍数定值设定。
Problems about voltage drop test in secondary circuit of potential transformer with electronic energy meter load 以电子电能表为负载的电压互感器二次回路压降测试的有关问题
Analyzes the existing of the secondary voltage loss for the voltage transformer, makes the export voltage of voltage transformer be the same with the terminal voltage of the Watt-hour meter to get the more correct measurement result, and there also is an example in the paper. 针对不同情况通过采用不同的压降补偿方法,使电压互感器出口电压与电能表端子电压一致,从而使计量更加准确,并以一个实例作说明。