Flexible rogowski coil – NRC series – 1000A to 6000A

SKU: N/A

R950.00R1,950.00

In stock

Product Description

NRC is a flexible current transducer based on the Rogowski principle, particularly suitable for measurement in combination with portable devices.

NRC coils are available in different size options. Select your required size in the dropdown box above.

MODEL NRC-100 NRC-150 NRC-300
Coil length 395mm 525mm 942mm
Window size 100mm 150mm 300mm
Reference rated current 1000A 3000A 6000A
Ratio
Calibrated:85±0.5mV/kA@50Hz
100±0.5mV/kA@50Hz
Uncalibrated:105±5mV/kA@50Hz

Direction for use

  • Calibrated to 0.5%
  • 8mm section easy to install
  • Easy to fix on bus bars and cables by cable ties
  • Lower zero drift down to 0.1mV
  • Can be installed without having to switch off power or disconnect power supply

Product Downloads

What is a Rogowski coils?

Rogowski coils have been used for the detection and measurement of electric currents. 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. By using precision winding techniques, especially developed for the purpose, the coils are manufactured so that their output is not influenced by the position of the conductor within the toroid, and to reject interference from external magnetic fields caused, for example, from nearby conductors. Basically, a Rogowski coil current measuring system consists of a combination of a coil and conditioning electronics.

They can be used in similar circumstances to CTs (current transformers) but for many applications they have considerable advantages:

  • Wide dynamic range.
  • High linearity.
  • Very useful with large size or awkward shaped conductors or in places with limited access.
  • Thanks to the structure without hard core, the coil can be easily manufactured according to the application or to the available space.
  • Unlike traditional current transducers, there is no danger from open-circuited secondaries.
  • They cannot be damaged by large overloads.
  • They are non-intrusive.
  • They draw no power from the main circuit carrying the current to be measured.
  • They are also light weight and in some applications are light enough to be suspended on the conductor being measured.

 

Direction for use

  • Calibrated to 0.5%
  • 8mm section easy to install
  • Easy to fix on bus bars and cables by cable ties
  • Lower zero drift down to 0.1mV
  • Can be installed without having to switch off power or disconnect power supply

Product Downloads

What is a Rogowski coils?

Rogowski coils have been used for the detection and measurement of electric currents. 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. By using precision winding techniques, especially developed for the purpose, the coils are manufactured so that their output is not influenced by the position of the conductor within the toroid, and to reject interference from external magnetic fields caused, for example, from nearby conductors. Basically, a Rogowski coil current measuring system consists of a combination of a coil and conditioning electronics.

They can be used in similar circumstances to CTs (current transformers) but for many applications they have considerable advantages:

  • Wide dynamic range.
  • High linearity.
  • Very useful with large size or awkward shaped conductors or in places with limited access.
  • Thanks to the structure without hard core, the coil can be easily manufactured according to the application or to the available space.
  • Unlike traditional current transducers, there is no danger from open-circuited secondaries.
  • They cannot be damaged by large overloads.
  • They are non-intrusive.
  • They draw no power from the main circuit carrying the current to be measured.
  • They are also light weight and in some applications are light enough to be suspended on the conductor being measured.

 

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