PEM CWT Ultra Mini Strömprob

Equipped with an extremely thin, clip-around coil (1.6mm cross-section).

The CWT Ultra-mini (CWTUM) has an extremely thin, clip-around coil of typically 1.6mm cross section. With such a thin coil it is possible to access even the most difficult to reach parts of a power electronic converter with negligible disruption to the circuit under test.

The CWT Ultra-mini is a wide-band AC current probe with BNC output to connect to most types of oscilloscope or data acquisition devices.

Features

• Wide operating temperature -40°C to +125°C.
• (-3dB) bandwidth from a few Hz to 30MHz.
• Loads the circuit under test by only a few pH.
• Coil insulation 1.2kV pk.
• Standard coil length (circumference) of 80mm. Longer coil lengths readily available.
• 1.7mm (max) cross section diameter. 
• Peak di/dt capabilities up to 100kA/μs. 
• Current ratings from 30A pk to 30kA pk. 

Applications

• Switching current waveforms in power electronic circuits: MOSFET or IGBT devices as small as TO-220 or TO-47.
• Measuring power losses in semiconductor bond wires in power devices.
• Monitoring currents in small inductors, capacitors, snubber circuits, etc.
• Measuring small AC currents in the presence of large DC currents (e.g. monitoring capacitor ripple).
• Power converter development and diagnostics.
• Measuring high frequency sinusoidal, pulsed or transient currents in power frequency to rf applications. 

Standards and Approvals

• CE marked
• Complies with EMC EN61326-1
• Complies with IEC 61010-1; IEC 61010-2-032
• PEM Ltd is certified to the ISO9001:2015 standard