rogowskicoil coil transformer current transformer Roche

Rockwell coil (Rogowski coil) current measurement known as coils, differential current sensor, is a homogeneous non-ferromagnetic material wound on the toroidal coil. The output signal is a current versus time differential. Through a voltage signal output from the integrating circuit, it can be true to the input current. Compared with conventional transformers with cores, Rockwell coil with a current real-time measurement, fast response, not saturated, almost no features of the phase error, so it can be applied to the relay, thyristor rectifier, inverter speed, resistance welding and other serious signal distortion occasions. Typical features: applies to MA mA range of current test, good linearity, wide bandwidth range, without the risk of secondary open circuit, over-current capability, easy to external electromagnetic interference, light weight low power consumption. Typical applications: Measuring motor inrush current, rectifier current measurement, insulator leakage current measurement, motor overload / short circuit protection, harmonic monitoring, converters, inverters, measuring leakage currents and breakers off current, high-voltage switch Cabinet protection system, calcium carbide furnace, furnace transformer secondary current measurement, capacitor discharge, the lightning current detection.