The IsoBlock I-ST is a 4 (four) channel module designed for high-quality isolated current measurements in the range from 1mA to 30 Amperes. The IsoBlock Current-ST module provides 1500V primary-to-secondary isolation, which allows users to monitor a miscellaneous of currents at different potentials. The compact form factor of the IsoBlock Current-ST module allows users to setup high channel density monitoring systems.
Three-Way Galvanic Isolation
Each channel of the IsoBlock module has a galvanic isolation from the input to the output that can eliminate large common mode voltages. In addition to that, each channel also has a protection stage at the input that guards it from surges.
Isolated Shunt Methodology
The IsoBlock Current-ST uses isolated shunt methodology to measure the current flowing through the input conductor. The input current is then obtained by amplifying the 50mV voltage drop across the shunt. This is followed by an anti-aliasing filter and a conditioning stage to output a ±10V signal.
Flux Gate Methodology
The IsoBlock I-FG-4C uses Flux-Gate methodology to measure the current flowing through the input conductor. This technique works by placing a toroid with a high number of turns (secondary) around the input current path (primary), while a close-loop circuitry controls the current through the secondary to null out the magnetic field inside the toroid. The input current is then obtained by multiplying the current from the control circuitry by the number of turns of the secondary. This is followed by an anti-aliasing filter and a conditioning stage to output a ±5V signal.