Current probe introduces electrostatic shielding
High-bandwidth and electrostatic shielding are characteristics of the CWTHF current probe, introduced by Power Electronic Measurements (PEM UK).
The probe, which offers higher frequency operation and improved E-field immunity, will be launched at PCIM Europe (7-9 May 2019).
The CWTHF has been added to the company’s CWT range of probes. These wideband probes use a novel electrostatic shielded Rogowski coil to provide immunity to interference from fast local dV/dt transients or large 50/60Hz voltages.
The probe measures faster current transient rise times, achieving a high frequency (-3dB) bandwidth of up to 30MHz for a 300mm coil. It can also handle a maximum current slope of over 100kA/µs. The probe has a robust, 8.5mm thick coil and a 10kV peak insulation voltage.
Suitable for a wide variety of applications, including power electronics development work in noisy, high-speed applications, EMC and power quality measurement in motor drives and traction, pulsed power measurements and even lightning strike currents, the probe is available in current ratings from 30A to 300kA, with coil circumferences of 300 to 1000mm as standard; wider circumferences are available on request.
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