SPECIFICATIONS

· High linearity from 1A to 100kA

· 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

· Measurement uniformity at any position of the conductor inside the coil

· Excellent degree of rejection to the external current conductor

NRC is a flexible current transducer based on Rogowski principle, particularly suitable for measurement in combinationwith portable devices. NRC 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/orweight

Due to its specific features, flexible Rogowski coil is an extremely comfortable solution for current measurement and can be used in a number of cases where traditional current transducer is not the adequate solution. NRC coil is 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 DIN-RAIL and panel meters can interface Rogowskioils directly without the need of the external integrators. This is an advantage because there are 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.

What is a Rogowski coil?

Rogowski coils have been used for the detection and measurement of electric currents for decades. They are based on a simple principle: an “air-cored” coil is placed around the conductor in a toroidal fashion and 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.