Compared with the existing current transformer, the current sensor developed for current detection based on micro-magnetic basic sensor with high precision and wide range extends the measurement range by hundreds of times, and improves the precision to level nA. Current sensor is widely used in the field of smart grids, boosting the smart grids to develop in a systematic, networked and digitized direction. In terms of intelligent grid management and maintenance, it is no longer possible to make rapid and direct measurement and online monitoring of the quality and fault location of some power products by using traditional sensors, while direct measurement can be made by using intelligent sensors to measure product quality indicators and faults. Guochuang Intelligent micro-magnetic basic sensor is capable of collecting, processing and exchanging information, and is the combination of the integrated sensor with microprocessor. It is widely applied to power grid detection, real-time online monitoring, collection of power grid operation parameter, obtainment of equipment running status, and protection of the stable operation of power system, especially playing an important role in transformer substation automation, power equipment status monitoring and cable line fault monitoring and positioning.

The main application scenarios of Guochuang current sensor are as follows:

1) Real-time online non-contact measurement of railway track traction current and signal current;

2) Long-distance non-contact current test in power cable inspection;

3) Power cable leakage current test;

4) Non-contact online current test in the relay protection system of power lines;

5) Non-contact online current test in the power load balancing system;

6) High-power industrial electrical equipment control and safety protection system, etc.