Industry News

Things You Need Know When Using High-precision Current Sensors

Views : 921
Update time : 2021-12-14 18:01:45
HANGZHI high-precision current sensor is a current measurement and control component based on fluxgate technology, which can accurately convert the large DC current passing through the sensor into a small current that is convenient for measurement. It is a current measurement component that is two orders of magnitude higher than the limit measurement accuracy of the Hall current sensor. It is widely used in various fields of DC system, such as new energy vehicles, medical equipment, aerospace, instrumentation, rail transit, DC power supply, etc. So, what are the matters needing attention when using high-precision current sensors?
 
There are 7 items regarding precautions related to the use of the high-precision current sensor and the measured current shown as follows:
 
1. The measurement method of the sensor: Whether the measured current waveform is DC, AC, AC/DC or pulse current, etc., the output current of the sensor and the measured current have a proportional transformation relationship.
2. The measured current must be below the specified range of the selected sensor, and the maximum shall not exceed 120% of the rated range;
3. When the measured current exceeds 120% of the rated current range of the sensor, the sensor output will be automatically protected. At this time, the output current and the measured current are no longer in a proportional transformation relationship. When the measured current drops below the rated current, the sensor outputs back to normal;
4. When the measured current wire winds multiple turns on the sensor, the measured current of the sensor is the current value per turn multiplied by the number of turns;
5. Try to pass the measured current line through the center of the sensor hole
6. When the measured current is a high-voltage line above 10KV, the insulation between the current line and the aperture should be paid attention to;
7. When measuring the current of the ultra-high voltage transmission line, an isolation transformer can be used for isolation to form an equipotential body between the sensor and the power supply, and the sensor output is converted into an optical signal for transmission.
 
Related News
Read More >>
HANGZHI Mid-Year Summary Meeting HANGZHI Mid-Year Summary Meeting
Jul .31.2022
On July 23, 2022, HANGZHI ushered in the mid-year summary meeting.
Selection Principles of Inverters in Industrial and Commercial Power Plants Selection Principles of Inverters in Industrial and Commercial Power Plants
Jul .14.2022
The principle of inverter selection is to reduce the system cost of equipment, increase the power generation of the system, etc.
Why does the Photovoltaic Inverter Generate Leakage Current? Why does the Photovoltaic Inverter Generate Leakage Current?
Jul .07.2022
HANGZHI RIT series leakage current sensor can closely monitor the leakage current in the photovoltaic system according to the requirements of photovoltaic standards.
New Trends in Electrochemical Energy Storage Technologies New Trends in Electrochemical Energy Storage Technologies
Jun .19.2022
New products and technologies such as large cells, high voltage, and water-cooled liquid cooling are gradually on the stage, and the energy storage system continues to evolve towards large capacity.