Today's solar inverter layout needs based on current sensor compact , low-cost and reliable ground current detection scheme . LEM whereby specially designed CT series sensors. Pure sine wave power inverter They are rated in the range of 100mA, 200mA and 400mA different current devices provide linear output 5 volts at rated current . At 80 % and 90 % of the rated current conditions , the response time of less than 20 milliseconds and 60 milliseconds. Using high-tech design ( " flux gate " ) is the key to accurately measure small dc or ac current especially under conditions of low offset or drift ; measure DC and AC currents up to 18 kHz . CT can be mounted on a PCB, the small size, light weight, there is a through hole for passing through the phase line . Mounted on the PCB CAS / CASR / CKSR closed-loop current sensor with the same flux gate technology ; can be isolated AC and DC current measurement , they cover the range of 6 to 50Arms rated , the highest rating of three times the value of the measurement , same frequency up to 300 kHz (+ /-3dB). According to the latest requirements of the inverter design trends they were specifically designed to improve the performance of the following areas: solar inverters common mode interference , temperature drift ( offset and gain ; Depending on the model , the maximum zero temperature drift of 7 to 30ppm / K), the response time ( less than 0.3 sec ) , the insulation level of the +5 volt supply and compact size .
没有评论:
发表评论