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High Frequency AC Current Probes and Rogowski Coils
How a Rogowski Coil works and what are the advantages
CWT LF low frequency wideband current probe 0.01Hz to 10MHz, tested at 10kV
The CWT LF current sensors are rugged clip around flexible coil wideband AC current probes with zero phase shift at the power frequencies - ideal for power measurement. The CWT LF uses Rogowski Coil technology for wide bandwidth and wide dynamic range for faithful conversion of measured current to an isolated voltage o/p waveform, intended for use with oscilloscopes, data loggers, DAQs and power analyzers
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CWT and CWTHF Rogowski AC Current Probe, Models 1A to 1,200kA, bandwidth 0.1Hz to 30MHz, 10kV
The CWT / CWTHF ac current sensors are rugged clip around flexible coil wideband AC current probes, using Rogowski Coil technology for wide bandwidth measurement and faithful conversion of current to voltage, intended for use in power conversion applications using DSO oscilloscopes, DAQ systems, transient recorders and power analyzers
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CWT Mini HF - Rogowski coil current sensing probe 1A to 300kA, 100mm or 200mm coil sizes, bandwidth 30MHz
The CWT Mini HF has an increased bandwidth to 30MHz, this ac current probe utilizes a patented high performance Rogowski Coil Sensor - at 3.5mm thin enough to fit in very confined spaces - often between the legs of a power semiconductor switching device
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CWT Mini 50HF - 50MHz Rogowski coil, ac current probe NEW
The CWT Mini 50 HF ac current probe is our latest high performance Rogowski Coil sensor with extended bandwidth, thin enough (typical cross section 3.5mm) to fit in very confined spaces - between the legs of high current power switching devices or even GaN applications
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CWT Mini Miniature AC Current Probe 17MHz
This original CWT Miniature AC current probe utilizes a compact Rogowski Coil sensor, thin enough to fit in very confined spaces - and between the legs of some power semiconductor switching device. Available in 2kV and 5kV ratings
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CWT Ultra Mini 1.7mm thick ac current probe 30MHz
The CWT Ultra Mini (CWTUM) ac current probe has the smallest Rogowski Coil sensor in the world at 1.7mm thickness. This is thin enough to fit around pins on some surface mount switching devices with minimal looping. The small sense coil easily fits between the legs of a T0220 semiconductor power switching device
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CWTUM-S Ultra Mini 1.2mm thick ac current probe 30MHz
The CWTUM-S Ultra Mini (CWTUM) ac current probe has the smallest Rogowski Coil sensor in the world at 1.2mm thickness. This is thin enough to fit around pins on some surface mount DPAK, SMT, TO220 switching devices with minimal looping. The small sense coil easily fits between the legs of a T0220 semiconductor power switching device
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CWTUM-F and CWTUMHF-F Ultra Mini 1.3mm sensor, ac current probe 30MHz
The CWTUM-F and CWTUMHF-S Ultra Mini ac current probes use a small Rogowski Coil 1.3mm dia sensor for measurement of HF ac currents in tiny spaces. The sensor is thin enough to insert around PCB tracks or fit around pins on surface mount D2PAK, SMT, TO220 power switching devices with minimal looping. The CWTUM-F miniature current sense coil conveniently easily fits between the legs of most power semiconductor switching devices
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CMC Rogowski current sensing probe is optimized for detection of common mode ac currents causing bearing spark erosion - detecting issues before failure occurs
Variable Frequency Drives (VFDs or VSDs) that are used to control AC motor speed and torque, produce large high frequency currents that may appear on the machine shaft or flowing from cables to ground - the CMC Probe enables analysis of this phenomenon. These currents are the result of capacitive coupling from motor windings to casings - where the drive PWM voltage is applied to the motor windings. The current flowing from windings to the shaft causes currents to flow through the motor bearings to ground. This spark erosion is detrimental and can be measured with the CMC Current probe
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I-Probe - IP520 Non-contact current probe 50MHz
The Powertek I-Probe IP520 is a non-contact, non-clamp current probe, allowing fast easy measurement of currents in component legs, PCB tracks and cables. It works by placing the insulated tip of the probe onto a PCB track. The current flowing in the track can be investigated and measured revealing any unwanted effects
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