Data concentrator for data collection from substation level peripheral devices and for communication protocol adaptation to control centre.

Basic card

  • Ethernet connection
  • RS-232 full modem signal
  • RS-422/485

Expansion card 1

  • Fiber-optic connection
  • Optically isolated RS-232
  • Optically isolated RS-422/485
  • Fiber-optic input for GPS

Expansion card 2

  • 8 x RS-232

Communication protocols towards to control centre
IEC 60870-5-101 Unbalanced & Balanced, IEC 60870-5-104

Communication protocols towards to substation
IEC 61850, IEC 60870-5-103, IEC 60870-5-101 Unbalanced, SPA-bus, IEC 62056-21 (IEC 1107), Modbus-RTU, Modbus-TCP

Configuration tool Telem-GWS for data concentrators


3G or 4G GPRS modem, router and RTU module with 1 or 4 Ethernet ports. Also used as standalone NTP server.


AS Martem Laki 25, 12915 Tallinn, Estonia
Phone: (+372) 639 7979 E-mail: martem [at] martem dot eu