Rogowski coilsand integrator

Rogowski coils are flexible sensors that are used for the detection and measurement of electric currents. The absence of an internal metal core allows the coil to have a flexible and lightweight structure so that it can be hanged on the measured conductor. This feature, moreover, allows to accurately measure the AC component, avoiding the\its saturation.

How do Rogowski coils work?

It is based on a simple principle: an “air-cored” coil is placed around the conductor in a toroidal fashion; the magnetic field produced by the current induces a voltage in the coil. The voltage output is proportional to the rate of change of current. This voltage is integrated, thus producing an output proportional to the current. The output voltage is proportional to the change in current, and after an operational amplifier integrator, is proportional to the value of the current itself.

Applications

ENERGY AUDITS: The energy service companies, starting from the energy diagnosis, identify the best possible interventions to optimize consumption. In order to carry out a diagnosis they need measuring instruments such as Algodue Rogowski coils.

RETROFITTING: Algodue Rogowski coils are often used in modifications / extension / upgrades of existing electrical installations as they are the best solution in different situations:

their compactness makes them ideal for limited or defined spaces as in electrical panels.
lightness and flexibility allow installation and suspension directly to the conductor, even in cases where these are irregular, bulky, or multiple.
installation cuts installation time down to 1/6 vs. compared to that of traditional current transformers.

ENERGY MONITORING: Through the measurement and analysis of electrical parameters it is possible to control and manage energy consumption and relative costs, obtaining an effective and concrete result in terms of yield and savings. Algodue Rogowski coils combined with a measurement instrument are the ideal solution for industrial environments (e.g., control systems supervision, individual machinery loading, very high current monitoring), and renewable energy innovation.

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