Current Transformer

Low voltage current transformers are intended for supplying measuring instruments and protection circuits of electrical power devices with operating voltage of 0.66kV and frequency of 50Hz Key features • Frequency 50HZ +/-1% • Rated input From 50A - 5000A • Measuring range 1%In - 120% In • Rated output 1A,5A • Accuracy class 0.2,0.5,1,0.2s,0.5s • Ratio voltage 0.72KV (AC) • Dielectric strength 3.0KV/50KV HZ/1min • Insulation resistance DC500V/100MΩ min • Rated short time thermal current (Ith) 50KA • Rated dynamic current 2.5 Ith • Thermal current > 60 …… • Rated security coefficient FS < 5 • Standard approval IEC 61869-1,2 • Case PA – ABS • Flame resistance UL66 • Bobbin PBT • Core CRGO Silicon steel - Losses 0.75 W • Ultrasonic construction • Operating temp (-5°C) to (+50°C) • Operating humidity 1M ≤ 90% • Relative humidity ≤ 95% 24H • Output connection Cooper terminal • Temperature rise limit of winding 20 °C