PEM Rogowski coil high-frequency high-sensitivity CWTHF30 type current probe 6000 A/30M

Since pioneering the broadband Rogowski current probe over 30 years ago, PEM Ltd. has continuously developed CWT and now developed shielded CWTHF to provide state-of-the-art broadband AC current measurement.

CWT and CWTHF combine the easy-to-use, thin, and flexible Rogowski coil with the ability to accurately replicate fast switching current waveforms—whether sine wave, quasi-sine wave, PWM, or pulse wave.

main features

• patented electrostatic shielded coil, offering excellent immunity to 50/60Hz voltage fields and fast voltage transients.

• Models cover a frequency range from 0.03Hz to 30MHz:

current

• ratings from 30A to 300kA.

• Peak di/dt capability up to 120kA/uS.

• Coil insulation grade: 10kVpk.

• 8.5mm (maximum) coil cross-sectional area diameter.

• Circuit load testing with only a few pHs.

• Standard coil lengths range from 300mm to 1000mm, with longer coil lengths available.

application

• Transient current measurement in power electronics switching circuits.

• Lightning measurement.

• Power converter development and diagnostics.

• High-frequency sinusoidal current, such as induction heating.

• Measurement of small AC currents (e.g., monitoring capacitor ripples) in

the presence of high DC currents

• , electromagnetic compatibility measurements in traction, motor drives, and power networks.

• Measuring fault current, or current in pulse power applications