CWT APPLICATIONS

The CWT is suitable for measuring AC currents ranging from a few 100 milli-amps to hundreds of kA at frequencies from below Hz to several MHz. These "clip-around" transducers are non-intrusive, easy to insert in confined spaces, have an isolation capability up to 10kV and are not damaged by over-current surges. They can be used for measuring current waveforms with very rapid switching transients, or current pulses, or merely sinusoidal or quasi-sinusoidal currents.

PEM's CWT Rogowski current transducers have been used throughout the world in numerous applications such as:

• Monitoring current waveforms in semiconductor switches
• Development and servicing of power electronic equipment.
• Pulsed Power Projects - measuring capacitor discharge or current in magnetic accelerators
• Large magnitude currents - welding applications / motor drives / generators / HVDC
• Stray currents in machine shafts
• Measuring high frequency sinusoidal currents - Induction heating and high frequency power measurements
• Power quality measurements - Harmonic current measurements for EMC
• Measuring small AC currents in the presence of large DC currents
• Fault monitoring or circuit breaker interuption currents even monitoring lightening strikes