Electrostatic screening probes boost accuracy

The probes boost immunity to local dV/dt transients while maintaining a small size, flexibility, and 3dB bandwidth of up to 30MHz for a 100mm coil, says the company. The coil is only 4.5mm thick with 5kV insulation voltage, and can handle maximum current slope of 70kA/µs.

The probes can be used to measure complex current waveforms in equipment such as UPS circuits, SMPS and variable-speed drive inverters to counter high field strengths, or manage the high speeds and high blocking voltages of SiC for higher probe bandwidth and better common-mode immunity.

The probes deliver the advantages of a Rogowski coil, says the company and include zero insertion impedance, freedom from flying leads, isolated measurement, high peak-current rating, and the ability to measure small AC currents in the presence of large DC current.