Leyher Straße 69, 90763 Fürth


From 2003 to the present


net-line FW-40, net-line FW-50, net-line FW-5, net-line FW-5000


IEC 60870-5-101, IEC 60870-5-104, IEC 60870-5-103, Modbus RTU, Modbus TCP, Profibus DP, 3964R/RK512, IEC 61850

Since a manufacturer selection process in 2003, we have been supplying telecontrol stations for all the utilities of the Franconian transport and power generating company. The stations planned by infra fürth serve to monitor transformer stations, link substations, cogeneration plants, gas stations including gas regulator stations, carry out property protection tasks and EDP monitoring and link the water plant to the central control station.


In addition to the net-line FW-40 stations used in the past, in recent years net-line FW-50 and net-line FW-5 systems have been linked autonomously to two redundant net-line FW-4000 interfaces via both dedicated lines and dial-up links using IEC 60870-5-101. The two redundant interfaces are linked to the High-Leit XW control centre with protocol IEC 60870-5-104.

In the substations, a wide variety of links have been realised, such as Modbus RTU in cogeneration units, Modbus TCP for building services, Profibus DP and 3964R/RK512 links for automation technology in the water plant and biogas energy centre, and IEC 60870-5-103 connections to protective equipment.

Even large substations such as the Vacherstrasse substation with a total of 39 cells have been planned discretely; in this case a total of 15 IEC 60870-5-103 lines to the protective equipment has been realised with a net-line FW-5000.

In the local network stations, net-line FW-50 units are usually used, many local network stations also being equipped to switch the circuit breakers and isolators by double command.

Since 2012 infra fürth gmbh has realised renewable energy plants based on the net-line FW-5 small-scale telecontrol system. Installed in a lockable IP 65 compact wall-mounted housing with a UPS module and GPRS modem, 14 indications and 4 measured values (active and reactive power, current and voltage), in addition to the switching commands, are processed via a process connector and transmitted to the control centre by IEC 60870-5-104 via the GPRS link.

At the start of 2013, the Hätznerstrasse distribution station was realised as an IEC 61850 project with project support from Cologne. A net-line FW-50 station with IEC 60870-5-101 coupling to the control centre is connected to a total of 8 SIPROTEC combi units by FO ring via a RUGGEDCOM switch by IEC 61850. An advantage of this is the simple, familiar configuration environment with the setIT tool. Further IEC 61850 projects in the distribution station and substation field are planned for the future.

Our good cooperation could also be demonstrated by the fact that infra fürth gmbh provided the venue of the 2009 and 2012 telecontrol user days.