Series WKO-2C-B

Double core technology closed-loop current transformers for railway engineering


The current transducer WKO-2C-B with hall effect elements and double-core  technology has an extended frequency response up to 150 kHz and an accurate phase response. The WKO-2C-B guarantees an increased current measurement accuracy better than 0.3% in the whole frequency range: DC to 150 kHz.

A completely redesigned electronics ensures that the new C/L current transducer has better drift compensation and an extended temperature range from -40°C to 85°C.

Modular design

The current transformer has a modular design which allows a variety of mounting options. The cost-effective basic model consists of a housing with screw terminals, bushing for cable and holes for fixing. Optionally, the transducers are available with mounting kit for busbars, molex connectors and feets for horizontal or vertical mounting.

According to: 

  • EN 50178:1997
  • UL 94-V0
  • EN 50178
  • EN 50155:2007
  • IEC 61373:2010

Unique Selling Point

  • Fullfils the required railway engineering safety standards: EN 50178, EN 50155:2007 and IEC 61373:2010
  • Shock- and vibration tested according to IEC 61373:2010
  • High current measurement accuracy of 0.3%
  • Modular mounting plates providing universal mounting options
  • Lower sensitivity to external magnetic fields
  • Bidirectional and isolated current measurement up to ±750A current output
  • Modular mounting plates
  • REO double core technology
  • All materials manufactured using UL listed materials

Technical Data

  • Primary rated current : 500 – 2000 A
  • Measurement range : 0…3000 A
  • Frequency range : 120000 Hz