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Technical Information1SAUMFC15003 May 2006

MFC150 - 14108 MFC150

Flexible Rogowski Coil

Suitable to Measure Currents from mAmps toHundreds of kAmps High Linearity Wide Dynamic Range Very Useful with Large Size or Awkward ShapedConductors or in Places with Limited Access No Danger from Open-Circuited Secondary Cannot be Damaged by Large Overloads Non-Intrusive, no Power Drawn from the Main Light Enough to be Suspended on the ConductorBeing Measured Coil Length up to 2 m on Request Totally Shielded General Description Benefits

MFC150 is a flexible current transducer based on Rogowskiprinciple, particularly suitable for measurement in combination with portable devices.MFC150 coils are available in different sizes and can besupplied according to customer’s design, with a length up to 2 meters, therefore they can be used in all those applications, in which traditional transducers are not fitting due to its size and/or weight.Due to its specific features, flexible Rogowski coil is anextremely confortable solution for current measurement and can be used in a number of cases where traditional current transducer is not the adequate solution.MFC150 coil is provided with a shield against the influence ofexternal magnetic fields, therefore it grants a stablemeasurement from low currents to hundreds of kiloamps.The Rogowski coils must be connected to an electronicintegrator for 90° phase shift compensation and frequency equalization.Our portable and panel meters can interface Rogowski coilsdirectly without the need of the external integrators. This is an advantage because there is no external boxes or any power supply with consequent ease of use.The particular features of the Rogowski coils combined withthe extremely flexible input programming of our portable meters, allow to carry out measurement by all applications. ••••• Due to its structure, flexible Rogowski coils allows toembrace conductors or grouped cables, which are large and difficult to reach, without any hazard. • • • The coil output gives a low voltage signal, therefore thereis no danger from open-circuited secondary. This makes Rogowski transducers extremely suitable for temporary measurements, for example in combination with portable analysers. Unlike traditional current transformer with magnetic core,the Rogowski coil is a non-intrusive transducer. Since it has no hard core, it draws no power from the main circuit carrying the current to be measured. The absence of magnetic core grants a wide frequencyresponse, up to hundreds of kHz. This make MFC150 particularly suitable for measurement of harmonic content and transients.

Applications

••••• Measuring devices, lab instrumentation • Power monitoring & control systems • DC ripple measurement • Harmonics and transients monitoring • Very high current monitoring
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