Outdoor Integrated AC Voltage and Current Sensors


HaslerRail has been serving the rail industry since 1887. With thousands of installations in service worldwide, we have built up broad, deep knowledge of energy metering and management for rolling stock. Our outdoor integrated AC voltage and current sensors are based on this experience.

Features / Benefits

  • Suitable for energy measurement
  • Current loop transmission for noise immunity
  • Optional multiple outputs
  • Compact and lightweight
  • Safe against internal arcs
  • Expert customer support
  • Worldwide after-sales service

Polifemo is an integrated voltage and current measurement transducer that is suitable for railway traction systems operating at nominal system voltages of 25 kV (50 Hz) and 15 kV (16.66 Hz). Polifemo is accurate enough to be used for the catenary Voltage Measurement Function (VMF) and Current Measurement Function (CMF) to EU standards for energy measurement on board rail vehicles. It is also suitable for rooftop installation.

Polifemo can be delivered as a stand-alone device for rooftop installation by car builders and operators. It can also be provided as part of Sécheron Hasler Group’s comprehensive Energy Management System, which also includes the REM102 Energy Meter with DHS and DCS.

All of our products are backed by HaslerRail experts, who provide recommendations and support throughout the project lifecycle, and Sécheron Hasler Group’s worldwide network of service locations for assistance throughout the product lifetime.

  • AC applications 15 kV (16.7 Hz) and/or 25 kV (50 Hz or 60 Hz)
  • Maximum permanent measured voltage 36 kV
  • Maximum peak measured voltage 51 kV
  • Impulse withstand voltage 170 kV
  • Overvoltage category OV4
  • 2 isolated analog outputs, current loop type
  • Bipolar Voltage output: 50mA at 25KV
  • Nominal primary current: upt to 1200A
  • Bipolar Current output: 100mA at IN
  • Accuracy class 0.5R
  • Auxiliary supply voltage 24 , 72, 110 VDC
  • Protection degree IP65
  • Outdoor installation
  • Connection: side (above roof cabling) or bottom (under roof cabling)
  • Height: 310 mm – Weight: 35 kg
  • Suitable for ambient temperature – 40°C to +70°C
  • Reference standards: EN 50463-2 / IEC 62888-2
  • Insulation material according to EN 45545-2
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