球探手机比分

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  • [2016-01-29]
    1. What is the signal input of the three-phase digital voltmeter? Answer: Voltage, 0 ~ 450V, 100V after high voltage change, direct input current, 0 ~ 5A or 1A transformer input power factor table after voltage change: voltage 5 ...
  • [2016-01-22]
    First, the functional three-phase digital voltmeter is integrated to measure the current, voltage, active power, reactive power, frequency, power factor, active power, reactive power, voltage harmonics, current harmonics, zero sequence...
  • [2016-01-15]
    Now the state vigorously promotes energy-saving renovation projects in factories, buildings, hotels, and public buildings. In order to make energy saving and consumption feasible, energy consumption monitoring systems must be built first. Energy consumption monitoring system mainly over-measures water consumption, gas ...
  • [2016-01-08]
    In order to better implement the implementation of the smart grid and realize the automation of the power industry, a large number of digital multifunctional power meters must be applied. The following use cases of digital display multifunctional power meters are summarized here for the majority of design institutes ...
  • [2015-12-28]
    There are thousands of manufacturers of ammeters of various brands across the country, including pointer and digital display manufacturers. Are the pointers or digital display ammeters and voltmeters produced by these factories the same? Electricity...
  • [2015-12-21]
    I. Instrument accuracy China's electrical instrumentation is divided into seven levels of 0.1, 0.2, 0.5, 1.0, 1.5, 2.5, 5.0, this order is from high to low, ...
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