Datasheet

RC150 or RC190
Flexible Rogowski Coil
Applications
Measuring devices, lab instrumentation
Power monitoring & control systems
DC ripple measurement
Harmonics and transients monitoring
Very high current monitoring
Benefits
Due to its structure, flexible Rogowski coils allows to
embrace conductors or grouped cables, which are large and
difficult to reach, without any hazard.
The coil output gives a low voltage signal, therefore there is
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 frequency
response. This make RC150 and RC190 particularly suitable
for measurement of harmonic content and transients.
Rogowski Coil
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General description
RC150 and RC190 are flexible current transducers based on Rogowski principle, particularly suitable for measurement in
combination with portable devices. RC150 and RC190 coils are available in different sizes and can be supplied according to
customer’s design, 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 an extremely confortable solution for current measurement and can
be used in a number of cases where traditional current transducer is not the adequate solution.
RC150 and RC190 coils are provided with a shield against the influence of external magnetic fields, therefore it grants a stable
measurement from low currents to hundreds of kA. The Rogowski coils must be connected to an electronic integrator for
90° phase shift compensation and frequency equalization. Our portable and panel meters can interface Rogowski coils
directly 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 with the extremely
flexible input programming of our portable meters, allow to carry out measurement by all applications.
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Main features
Suitable to measure currents from mA to hundreds of kA
High linearity
Wide dynamic range
Very useful with large size or awkward shaped conductors or in places
with limited access
No danger from open-circuited secondary
Not damaged by large overloads
Non-intrusive, no power drawn from the main
Thanks to its light weight, it can be changed on the measured conductor
Totally shielded
RC150 versions from Ø8 mm, output 100mV/1KA @ 50 Hz (yellow)
RC190 versions from Ø12 mm, output 333mV/1KA @ 50 Hz (red)