CWT Range of AC Current Probes

The CWT Rogowski current probe is suitable for measuring AC currents ranging from a few 100 milliamps to hundreds of kA from below 1Hz to >10MHz.

CWT

CWT Standard

The CWT is a state-of-the art wide-bandwidth ac current probe with typical bandwidths in the range < 1Hz to 16MHz.

  • Robust coils in lengths from 300mm to >1m
  • Insulation Voltage 10kV peak
  • Current Ratings 30A to 600kA

CWT Mini / MiniHF

The CWT Mini & MiniHF are state-of-the art wide-bandwidth ac current probes with typical bandwidths in the range < 1Hz to 30MHz.

  • Two Miniature Coil Sizes (3.5mm or 4.5mm)
  • Insulation Voltage 2kV or 5kV peak
  • Current Ratings 30A to 120kA
  • Screened Coil Versions Available

CWT Ultra Mini

Maximum coil cross section of 1.7mm fits through the legs of a TO-220 semiconductor device. Bandwidth: fH(-3db) 30MHz

  • Coil Size (Max. 1.7mm Cross Section)
  • Insulation Voltage 1.2kV peak
  • Current Ratings 30A to 6kA
CWT LF

CWT LF – Low Frequency AC Probe

Extended low frequency cut-off to enable measurements of long duration pulses (10’s ms) such as capacitor discharge.

  • Available with Standard or Mini Coil
  • Insulation Voltage 2kV, 5kV or 10kV peak
  • Current Ratings 60A to 300kA

Overview

These clip-around probes are non-intrusive, easy to install in confined spaces, have an isolation capability of up to 10kV and are not damaged by over-current surges.

The CWT is ideal for power electronic development work because it combines the easy-to-use thin, flexible, clip-around coil with an ability to accurately replicate fast switching current waveforms be they sinusoidal, quasi sinusoidal or pulsed.