China's first low-voltage current transformer off-line

April 19, 2021

China's first low-voltage Current Transformer automated calibration line for metering was rolled off the line in Qinhuangdao, Hebei, and passed the project acceptance of the State Grid Expert Group. The off-line and promotion of the project is a technical revolution in the field of electric energy measurement for the national smart grid construction, and will end the history of domestic transformer manual survey.

Metering transformers are widely used in power systems for power consumption records, electrical energy transactions, and industrial load monitoring applications. They are important metering components used in China's current power system. According to the technicians, after the project is put into use, it is calculated according to 250 working days per year and continuous working hours of 7 hours per working day. The capacity of the new project certified transformers is 200,000 per year, which is the efficiency of the manual transformer testing transformers. 4 times or so. Compared with manual verification, automated new projects also increase the efficiency and accuracy of verification.

The metering low-voltage current transformer automatic verification system project is a new project developed by Hainer Electric Measurement Co., Ltd. in cooperation with the national smart grid strategy and developed in cooperation with the Tianjin Electric Power Company's energy metering center. From the initial design to the later implementation, it lasted 8 month.

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