Rogowski coil


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Rogowski coil

[rə′gäv·skē ‚kȯil]
(engineering)
A device for measuring alternating current without making contact with the current-carrying conductor, which consists of an air-core coil placed around the conductor in a toroidal fashion so that the alternating magnetic field produced by the current induces a voltage in the coil.
References in periodicals archive ?
In [6] the principle of operation, productivity, limitations and development of current measurement technology using the Rogowski coil are considered and measures to improve the design of the integrator which allows for bandwidth up to 10 MHz are presented.
CTRC Current Transformers use the Rogowski coil as the first step in power monitoring.
Based on some critical parameters of a sensor such as: cost, bandwidth, sensitivity, saturation, linearity, operating temperature, footprints, integratability, flexibility, isolation and material technology, Rogowski coil has been considered as a favourite tool for current sensing purposes [3].
Although a Rogowski coil is conceptually simple, three major weaknesses limit the degree to which its accuracy approaches theoretical levels.
The second component, the handheld receiver, incorporates a display for signal-level readout and push-button controls connected to a transducer for cable identification or to a flexible Rogowski coil for phase/core identification.
The Rogowski coil generally consists of a toroidal, air-cored sensor that produces an output voltage which is proportional to the current waveform.
It must be noted that use of the Rogowski coil arrangement significantly improves sensitivity of the fault detection due to increased amplification rate with the harmonic number, what can be compared in Fig.
Pulse Electronics' di/dt current sensor, based on the Rogowski coil principle*, offered exceptional linearity over a wide current range.
The Rogowski coil principle states that a conductor carrying an AC current i(t) and passing through a helical coil induces a voltage across the coil that is proportional to the rate of change of the current (di/dt) in the conductor.
build on our technology leadership by investing for growth and product diversity in each product group, including 3-D antennas, switchable antennas and Rogowski coil sensor technology.
Based on the inherent advantages of a Rogowski coil, the Pulse product range has high-accuracy and exceptional linearity for electricity meters with unrivaled flexibility in size and shape.
The contract is for the supply of measurement equipment for the project Development of the research potential of the Institute of Laboratory of High Power Electrical Engineering, consisting of seven independent parts - Part 1 Software to analyze the quality of energy,- Part 2 Clamp Multimeter 5-500 A,- Part 3 Clamp Multimeter AC / DC 2 kA,- Part 4 Clamp Multimeter AC / DC 1 kA,- Part 5 Rogowski coil 30 cm, 2 mV / a, 3 kA,- Part 6 Rogowski coil 50 cm, 0.