The day before, quality inspection agency issued notice on the establishment of national power frequency measuring instrument measuring station license, which marks by the quality and Technical Supervision Bureau of Hunan province led the construction of the national power frequency measurement instrument metering station officially launched operations, but also marks China's electricity meter has frequency measurement legal place.
AQSIQ issued notice of authorization
For a long time, the detection of variable frequency power is a difficult problem in the field of engineering and academia. There are many difficulties in the measurement of frequency conversion power, such as non sine wave, non power frequency, irregular and so on. Calibration method of variable frequency power at home and abroad is incomplete, the frequency current verification and calibration of high voltage, high current, high power but no actual standard, traceability of passive follow, resulting in frequency measurement without censorship of the embarrassing situation.
Along with the two national standard "national power frequency measuring instrument measuring the formal operation station and was formally issued in 2016 JJF 1559-2016 frequency power analyzer calibration standard" and "JJF 1558-2016 measuring frequency transmitter calibration standard" power frequency, verification and calibration of actual standard, traceability, frequency measuring instruments can be passive without censorship the situation has completely resolved, the market competition order confusion will be comprehensive improvement. Conducive to promoting the upgrading of the electric measurement instrument industry, and promote the healthy development of frequency conversion energy saving technology.
The national formal operation of variable frequency power measuring instrument metering station, the end of a long time frequency electrical measuring instrument can only measure the power situation, the country station has become China so far only one frequency power measurement of the legal unit.