1. Overview

The CWT PEM probe Mini50HF is a special version of the CWT MiniHF series. The CWT Mini50HF is optimized for faster switching devices such as SiC, with a high-frequency bandwidth of 50MHz (-3dB) and a 100mm coil, with a thickness of only 3.5mm (2kV peak damage) or 4. 5mm (5kV peak damage)CWT Mini offers two types of insulation voltages: peak voltage of 2kV, cross-sectional diameter of 3.5mm, peak voltage of 5kV, diameter of 4.5mm, with a high-frequency (-3dB) bandwidth of 20MHz.

2Main performance parameters:

(1) Peak current: 30A -300kA peak

(2) Output: ± 6.0V (full range)

(3) High frequency bandwidth (-3dB): 50MHz

(4) Accuracy (typical value): up to ± 0.2% at the center position of the coil

(5) Working temperature range: 0 ℃ to+40 ℃ (integrator); -40 ℃ to+125 ℃ (coil+lead)

(6) Coil length: 100mm

(7) Coil insulation: 2kV peak

(8) Coil diameter: 3.5mm

(9) Lead length: 1m (customizable length)

(10) Power supply: AA battery or 12V DC power adapter

3. Main features of CWT Mini50HF:

(1) Traceable calibration data (including certificates)

(2) Non contact measurement has no effect on the tested circuit

(3) No magnetic material means excellent linearity<0.05% reading

(4) Isolate DC current to test small ripple current on large DC currents

(5) The overcurrent range will not be damaged

4application

(1) The CWTMiniHF with a cutoff frequency of 50MHz and a high frequency (-3dB) has two main market advantages compared to the current CWTMini50HF:

Shielding (also known as "shielding") Rogowski coil (JP 6438963, RoW under application)

Optimized high-frequency (HF) performance

(2) The advancement of power semiconductors means that these switches can now:

Higher blocking voltage;

Faster switching time

Small size, operated at high temperatures

(3) The CWT PEM probe Mini50HF can be used to measure the current in power converters using these new power semiconductor technologies, especially in silicon carbide (SiC) devices, where a transient voltage ≥ 40V/ns with a rise time of 10 to 50ns needs to be replicated in the presence of dV/dt.

(4) CWTMini50HF still retains all the other advantages of our CWT Rogowski probe for Mini50HF tracking

Thin wire clamp around the coil, peak voltage 2kV. 3.5mm;

High temperature can reach+125 ° C

Almost zero insertion impedance

(5) CWTMini50HF isMeasurement in high-speed power and power electronics applications provides significant advantages.

5. Technical specifications