13 kHz track circuit generator
Type AV 13k
The 13 kHz track circuit unit is an electronic device built with printed circuit technology. It is used as a train detection element, mainly in level crossing protection equipment.
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Request a quoteThe AV13k unit contains the transmitter (generator) of a 13 kHz track circuit and the receiver electronics in a single housing suitable for outdoor installation. It is made in two versions: with normal and with shortened detection length.
The unit includes every component needed to form the track circuit; it only requires a power supply and can drive the specified track relay – or a device replacing it – directly. (When used in a release circuit, the MÁV standard circuit requires an additional external resistor in the feed branch.)
The unit is mechanically very robust: it is assembled in a two-part cast aluminium housing, with electronics built on printed circuit boards.
Advantages
- no insulated rail joints required
- can be superimposed on a 75 Hz track circuit – thanks to the large frequency difference the two do not interfere
- easy installation: transmitter and receiver share one housing
- connects directly to the track relay
Main parameters
- Supply voltage: 24 V DC
- Transmitter–receiver installation distance: 18 m
- Shunt sensitivity: 0.2 Ω
- Rail voltage at the receiver: 0.7 V rms
- Compatible track relay: XJ 1021/B (1000 Ω)
References
The most widely used train detection device on the lines of MÁV and GySEV: 8,000 units in operation, mostly in level crossing protection systems.
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