Non-Isolated Audible Frequency (AF) Track Circuit Device
It is a non-insulated track circuit device designed for AC or DC train section where there is electromagnetic interference (mainly generated from the harmonic wave of the electric line power supply). It detects the presence/absence of the train, does not carry a speed code.
A device used to return the electric wire return current to the 25KV 60Hz train section.
- Detecting the presence of trains to prevent accidents
- Achieve safe operation of trains by communicating the train speed and vehicle operation information to the locomotive
|Rated Current||Continuous rated current: more than AC 600A, Rated Current more than 1,000A For 2 min.
|Coil Impedence||3.0mΩ or less at AC 60Hz, 1.5mΩ or less at DC
At the corresponding track circuit frequency: 7.0Ω or more
|Installation||Installed with 1,500m inverval between stations by type|
|Type||A(1,699㎐), B(2,296㎐), C(1,996㎐), D(2,593㎐)|
|Size(㎜)||577(W) × 288(L) × 154.5(H)|