Dc leakage current sensor as a kind of typical current sensor, has been widely used at present, let's dc leakage current sensor principle, characteristics, application and matters needing attention and so on to talk with you.

Leakage current sensor installed on the dc circuit of positive and negative qualification round, when the device is running, each branch of sensor output signal of real-time detection, when the branch insulation is normal, equal current through the sensor, in the opposite direction, the output signal is zero; When the branch is grounded, there flow through the leakage current sensor, the output of the sensor is not zero. So by detecting sensor output signal of the various loops, you can judge the dc system grounding branch. The principle of line selection of high precision, not affected by the influence of distributed capacitance.

The characteristics of dc leakage current sensor

1, dc leakage current sensor is using magnetic modulation (or called flux-gate Flux Gate) technology, and the offset current generated by the internal square wave oscillator was carried out on the primary side current compensation, a balanced field, the output value accurately reflect the original VM side current, is mainly used for small dc current and differential current detection.

2, unibody design, unibody design dc leakage current sensor is adopted to replace the traditional way of shunt + transmitter and other components of the test way, small volume, convenient installation, avoid the because of the space structure is too small and in use of the problem.

Dc leakage current sensor applications in national security using standard, using the standard for all electrical equipment, there is a certain rigid requirements, dc leakage current sensor in the dc system is an indispensable important components, for dc leakage current test equipment, widely used in dc power transmission, electric storage test, dc panel, power supply, large medical equipment, photovoltaic equipment, wind power, communication base station in sectors such as goods, to feedback of the leakage situation of equipment, the first time after the original electric leakage protection will take relevant measures, in the first time to avoid the accident, the safe use and production operation.

Dc leakage current sensor using precautions:

1, connection when pay attention to the exposed conductive part terminals, as far as possible to prevent ESD, needs a professional construction experience of the engineers to the product for terminal operation. Power supply, input and output of each connecting wire must be properly connected, dislocation or reverse connect, otherwise may cause damage of product.

2, the product installation environment should be no conductive dust and corrosion.

3, products for internal debugging the installed potentiometer calibration, the user do not adjust.

4, violent vibration or high temperature may also lead to product damage, must pay attention to use occasion.