Potrebujeme váš súhlas na využitie jednotlivých dát, aby sa vám okrem iného mohli ukazovať informácie týkajúce sa vašich záujmov. Súhlas udelíte kliknutím na tlačidlo „OK“.
Application of thyristors in railway technology - Measures for the prevention of functional disturbance in signalling installations
Automaticky preložený názov:
Aplikácia tyristory v koľajovej techniky - opatrenia na prevenciu funkčnej poruchy v zabezpečovacích zariadení
NORMA vydaná dňa 1.2.2004
Označenie normy: UIC 737-3-2ed.
Dátum vydania normy: 1.2.2004
Kód tovaru: NS-550387
Počet strán: 20
Približná hmotnosť: 60 g (0.13 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy UIC
Summary:
The electrical circuit of a traction current comprises, besides the traction vehicle, the substation, the overhead line, rails, track, ground and often an earth cable and a return conductor.
Signalling installations usually use the track as a transmission medium. It can therefore be exposed to interference, which may result in unsafe operation.
The signalling track circuits may use D.C. (not with D.C. traction) or A.C.
There are A.C. track circuits which operate with 25 - 400 Hz, sine-wave or modulated signal. Also pulsed track circuits, A.C. track circuits at 0,8 - 3 kHz (sine-wave, pulse- or frequency modulated A.C.) or A.C. track circuits at 8 -100 kHz are used.
Axle counters are also used.
Driving cab signalling via track circuits with discontinuous or continuous function exist. Also intermittent train control with resonant systems or carrier frequencies (4,5 - 27 MHz) are used.
In the second half of the leaflet, possible measures to improve the electromagnetic compatibility between the disturbance source and the disturbed object are listed. Measures can be made in the substation, in the track and in the traction vehicle. Also the design of the track circuits are dealt with.
Posledná aktualizácia: 2024-07-29 (Počet položiek: 2 339 192)
© Copyright 2024 NORMSERVIS s.r.o.