Ac/Dc Trms 50 A Loop-Powered Current Transformer

The QI-50-I is an AC/DC current transformer which is galvanically isolated from the measuring circuit. The function and appearance of this device are very similar to a standard active CT, however it is able to measure the DC component and AC TRMS.

The transducer is loop-powered with current 4-20 mA so needs no direct power supply. It is the first loop-powered Hall effect transformer with 0.5% accuracy on the market.

AC/DC loop-powered current transformer TRMS, 0…50 A bipolar, analogue output 4…20 mA on loop, range set by dip-switch, ready for both vertical and horizontal DIN rail mounting.

 Features

• POWER SUPPLY Passive loop, 11…30 VDC, protections against polarity reversal and overtemperature.
• ABSORPTION Less than 3.5 mA
• DEGREE OF PROTECTION IP20
• ACCURACY CLASS 0.5% FS
• RESOLUTION 12 bit
• TEMPERATURE COEFFICIENT < 200 ppm/°C
• RESPONSE TIME 1000 ms
• HYSTERESIS 0.15% FS
• WORKING TEMPERATURE -15…+65°C
• TYPE OF MEASUREMENT RMS (monopolar) or DC
• RANGE ±50 Arms or ±25 Arms set by dip-switch
• CREST FACTOR 1.8
• BAND WIDTH DC or 20…2000 Hz
• ISOLATION 3 kV on bare wire
• OVERLOAD 2000 A pulse, 300 A continuous
• OUTPUT 4…20 mA