The CWT ULTRA Miniature current probes utilize a Rogowski Coil current sensor thin enough (typical cross section 1.7mm) to fit between the legs of a T0220 semiconductor switching device. With a high frequency bandwidth up to 30MHz, the CWT ULTRA miniature is ideal for measuring steady state current, switching transients or pulsed currents between 300mA and 6000Apk in power electronic equipment. The CWT ULTRA miniature probe is a clip around flexible coil current probe, based on the Rogowski principle to achieve high bandwidth measurement and faithful conversion of current to voltage, intended for use with oscilloscopes, transient recorders, data loggers, power meters and power analyzers. All models are supplied with an 80mm length clip-around coil, ensuring easy current monitoring even where access is limited.
|CWT Ultra Mini specifications|
typ. (Hz) fL
|Phase lead at 1kHz
|HF (3dB) bandwidth
typ. (MHz) fH*2
|Coil Length 80mm|
|High Sensitivity Ranges of CWT .... measuring currents from 300mA|
*1Distributed around the fL (3dB) bandwidth.
*2The high frequency bandwidth is in part dependent on coil length. Contact Powertek for values of fH for other coil lengths.
Safe peak working voltage to earth. Coils are flash tested at 3kV/60Hz for 60 seconds. Information about the continuous use of coils at high voltage can be obtained from Powertek
For de-rating due to temperature cycling please consult Powertek
|Model / sensitivity:
CWT Ultra mini unit is supplied with bnc-bnc cable, 12-24Vdc input, 4 AA batteries, power adapter, user manual, calibration certificate and carry case.
|Range||Model||Denotes battery||Cable Length (m)||Coil circumference (mm)|
All CWT current probes are supplied with hard carry case, bnc-bnc cable, batteries, power adapter, user manual, statement of conformance & calibration certificate
If you have any queries regarding the CWT Ultra Mini or require specifications outside our standard ranges please do not hesitate to contact us.