PEM Rogowski coil CWTUMHF-F conductor diameter 1.7 mm type PCB MOSFET IGBT device test

The wide-band AC current probe with BNC output can be connected to most types of oscilloscopes or data acquisition devices.

The CWTUM-F (1.2 mm thickness) and the electrostatic shielded version, CWTUMHF-F (1.7 mm thickness), are an extension of the original CWT Ultra-mini.

From PEM, the novel mechanical construction can reduce the overall size of the Rogowski coil.

Therefore, the probe has minimal impact on the circuit under test, simplifying measurements in dense power electronics circuit areas.

Main Features:

• New “fork” structure, coil length 55mm.

• Wide operating temperature range: -40°℃ to 125°C.

• Current ratings from 60A to 12kA.

• Coil insulation rating 1.2kV peak.

• Peak di/dt capability up to 100kA/s.

• Thin version, 1.2mm cross-sectional diameter. HF (-3dB) 20MHz

• Shielded “HF” version, 1.7mm cross-sectional diameter. Excellent voltage withstand HF (-3dB) 30MHz

Applications:

• Switching current waveforms in power electronic circuits:

• MOSFET or IGBT devices, small sizes such as TO-220, D2PAK, and other SMT power devices

• Measuring power loss in semiconductor bond wires of power devices.

• Monitoring current in small inductors, capacitors, surge protection circuits, etc.

• Measuring small AC currents in the presence of large DC currents (for example, monitoring capacitor ripple)

• Development and diagnostics of power converters.

• Measuring high-frequency sinusoidal, pulse, or transient currents from power frequency to RF applications.