flexible rogowski coil current measuring coil differential current sensor

1) Suitable to measure currents from A to hundreds of kA.
2) High linearity.
3) The absence of magnetic core grants a wide frequency
response to be suitable for measurement of harmonic
content and transients.
4) Very useful with large size or awkward shaped conductors
or in places with limited access.
5) Non-intrusive, no power drawn from the main.
6) Not damaged by large overloads.
7) There is no danger from open-circuited secondary.