Devices for train detection

Double rail track circuits are used for detecting track occupancy. The KO-3103 track circuits are supplied by a bi-phase voltage 2 x 220 V, 75 Hz with a 90° phase shift.

The KOA1 are double rail track circuits limited by insulated joints. They are used on lines electrified by 25 kV, 50 Hz or 15 kV, 16 2/3 Hz traction current systems, by direct current traction current system lines of 3 kV or by 1,5 kV or 0,75 kV and non-electrified lines.

The PZN-1 axle counter is a system used for detecting and counting axles of railway vehicles and then evaluating the occupancy of the track section. Each rail section is defined by up to 8 counting points. Each counting point can be joint for the previous and follow-up section (i.e. input and output).

The DT 075 C impedance bond is part of equipment of the double rail track circuits. It is intended to be used on electrified direct current traction current system lines of 3 kV, one phase traction current systems of 25 kV, 50 Hz and on lines with independent traction.

The DT 075 E impedance bond is part of equipment of the double rail track circuits. It is intended to be used on electrified direct current traction current system lines of 3 kV, one phase traction current systems of 25 kV, 50 Hz and on lines with independent traction.