Flexible Rogowski Coils CT RNC Series

ARNOWA Flex Series is a flexible current transducer based on Rogowski principle, particularly suitable for measurement in combination with 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/or weight.


Product Description


  • 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


  • Calibrated to 0.5%
  • 8mm section easy to install
  • Lower zero drift down to 0.1mV


  • Measuring devices, lab instrumentation
  • Power monitoring & control systems
  • DC ripple measurement
  • Harmonics and transients monitoring
  • Power meter, Power analyzer sensor


Coil length from 30 to 300 cm
Coil diameter 8 ±0.2 mm
Fastening bayonet holder
Material thermoplastic UL94-V0
Output level (RMS) 85mV/1 kA,100mV/kA@50Hz Calibrated
Coil resistance from 300 to 2000 Ω
Positioning error better than ±1% of reading
Working voltage 1000 VRMS CAT III 600 VRMS CAT IV pollution degree 2
Test voltage 7400 VRMS / 1 min
Connection cable Type 2 x 0.15 mm + shield
Length on request
Operating temperature from -30°C to +80°C
Storage temperature from -40°C to +80°C
Protection degree IP67
Safety Standards EN61010-1, EN61010-031, EN61010-2-031, EN61010-2-032