IT-Type Closed Loop

Current transducers IT type

Operation principle

It closed loop

IT current transducers are high accuracy, large bandwidth transducers which do not use Hall generators. The magnetic flux created by the primary current (lp) is compensated by a secondary current. The zero-flux detector is a symmetry detector using two wounded cores connected to a square-wave generator. The secondary compensating current is an exact representation of the primary current.

Features:

Very high global accuracy
Very low noise on the output signal
Linearity < 1 ppm
Low cross-over distortion
High temperature stability
Wide frequency range