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Integrated Parametric Current Transformer

Non-intercepting DC current measurement

100 times more precise than Hall effect devices

High resolution, high robustness to discharges

Damage level: 100kA, 4/10µs discharges – DC, unlimited


DC to 4 kHz  


± 1mA to ± 5A  


< 10µA

A useful property of Magnetic Current Sensors is that the vector sum of all currents passing through the aperture is measured. Any source-to-load leakage or breakdown current within the sensor bandwidth can be measured in  amplitude and phase if all cables to the load are passed through the sensor. The source may be a battery, an ac single- or multi-phase line, or a multi-phase ac line from a motor drive. The load may be a complete system like an automobile, an ac to dc inverter, or a variable speed motor. This measurement of unbalanced, leakage, or breakdown current may be useful for production test or alternatively for long-term system condition monitoring.

Return ground currents, DC and AC

Leakage current, DC and AC

Sum of low currents

Small difference of high currents

Low current at high voltage

Power tube electrode current

Electrostatic corona discharge

Electrochemically induced currents

Standby systems charging currents


Full scale range

Any value from ±1mA to ±5A,
factory preset


DC up to 4kHz, depending on range


±10V bipolar, buffered, 20 mA max
stands permanent short circuit


<10μA (1s integration)

Linearity error

<0.1% FS

Absolute accuracy

± 0.5% FS

Large aperture 82mm

Accuracy independent of

conductor position