LEM had introduced two fast precision high current sensors for ac, dc and pulsed currents: a 2MHz 1,500A type and 1ns 1,000A type. IN 1500-S is for measuring up to 1.5kA across a 2MHz (±3dB) bandwidth ...
Open-loop current sensors have a definite price advantage over closed-loop counterparts. While you can use them in drive applications where torque accuracy isn't demanding — such as pump and fan ...