Induction Heating

In industrial induction heating applications a current sensor is often used to monitor both current amplitude and zero-crossing detection, typically providing the feedback signal to a voltage-fed medium frequency inverter. Measured currents range from 500A to 10,000A and the frequency varies from a few hundred Hz to 10’skHz. The phase error of the measurement needs to be tightly controlled for accurate zero crossing detection. The RCTi has a very small and highly predictable phase error over this frequency range and fits the application perfectly due to its easy installation, high reliability and small size.

Additionally Rogowski probes are useful for diagnostic work in developing and maintaining induction heating coils and power converters, where fast switching frequencies, or hf resonance demand higher frequency performance than the RCTi.