![Types of A.F.T.C. TI-21 (ABB) FTGS ( SIEMENS ) ALSTOM (DC-CODED) UM-7 SEF- FRANCE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],8-TYPES FTGS-46 ,[object Object],[object Object],[object Object],[object Object],FTGS-917 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],6-TYPES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],4-TYPES ,[object Object],[object Object],[object Object],[object Object],Next Stop 12-TYPES](https://image.slidesharecdn.com/aftcmyppt-100721131128-phpapp02/85/audio-frequency-track-circuits-1-320.jpg)
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AUDIO FREQUENCY TRACK CIRCUITS
- 3. ABB (T1 TYPE) A.F.T.C. Next HOME Back
- 5. TECHNICAL SPECIFICATION OF TI-21 + / - 5 mm MAX about centre of tunned area. 6. TRACK CIRCUIT EXTRIMITY 20 Mt. +/- 0. 5 Mt. 10. SEPARATION JOINT (TUNED AREA)LENGTH 1 Milli ohm maximum per connection. 9. TRACK CONNECTION RESSISTANCE Standard Nutral Relay 50 V DC. 8. RELAY 0.8 -- 1. 8 V 4.5 -- 7.5 V 7. TRACK FEED 1. LOW POWER MODE VOLTAGES 2. HIGH POWER MODE 1500 KHz TO 2600 KHz. Approx. 11. FREQUENCY RANGE -30 O TO + 70 O 5. TEMPARATURE RANGE 0.15 MAXIMUM 0.5 MAXIMUM 4. TARIN SHUNT 1. INSIDE TUNNED AREA 2. OUTSIDE TUNNED AREA 0.5 mho/km max. 3.BALLAST CONDUCTANCE 50 TO 250 M 200 TO 1100M (960 M) 600 TO 2000 M (1800M) 2.LENGTH 1. LOW POWER MODE 2. HEIGH POWER MODE .(END FEED) 3. HEIGH POWER MODE (CENTER FEED) 11OV,50 KHz OR 24 V DC 1.POWER SUPPLY Next HOME Back
- 7. BLOCK DIGRAM OF TI-21 END FEED AFTC TU- B TU- A Rx- B PSU Tx- A TU- A TU- B Rx- A PSU Tx- B Tx - END Tx - END Rx - END Rx - END 24 V DC 24 V DC 110 V AC/50 KHz +/- 7% I/P Tapping ( 5-0-95-105-110) O/P Volt. – 22.5 v to 30.5 V DC O/P Current – 4.4A(max) Ripple Volt-3 V PIP 50/.25 Sq.mm Cu Cable 350 Mt. Max. 10V to 11V AC (A,C,E,G) 15 V to 16 V AC (B,D,F,H) Voltage On Rail V -TX V –R X 0.8V-1.8V 4.5V – 7.5 V MODE Low Power Normal 0.5 – 0. 8 V 0.4 – 1.6 V 24 V DC 24 V DC 35 Sq mm Cu/its Eq. 50/.25 Sq.mm Cu Cable 30 Mt. Max. Next HOME Back
- 8. BLOCK DIGRAM OF TI-21 CENTER FEED AFTC TU- B Rx- B PSU TU- A TU- B Rx- A PSU Tx- B Tx - END Rx - END Rx - END 24 V DC 24 V DC 110 V AC ETU Tx- A Tx - END TU- A Rx- A PSU TRA TRA Rx - END Next HOME Back
- 9. AFTC END FEED WITH NO TRACK CIRCUIT ZONE TU TU 20 +/- 0.5 Mt. < 1 Mt. AFTC END FEED OTHER TYPE OF TRACK CIRCUIT ZONE OTHER T/CKT. Next HOME Back
- 10. Transmitter ABB MULTI- VIBRETOR MODU- LATOR O/P FILTER OSCILATOR 1 2 3 4 5 6 OUT-PUT AMPLIFIER MATCHING TRANSFORMER TO TU F+17 F+17 F+17 F-17 F-17 Modulation at 4.8 KHz O/P AMP Next HOME Back
- 11. RECEIVER- ABB 4a FILTER FILTER FILTER FILTER AMPLIFIER AMPLIFIER DEMODULATOR DEMODULATOR TIME DELAY RELAY DRIVE SEQUENTIAL AND GATE INPUT TRANSFORMER INPUT FROM TU OUT PUT RELAY 1 2a 3a 5a 6 4b 2b 3b 5b 7 Next HOME Back
- 14. Technical data-1 Next HOME Back
- 15. Technical data-2 Next HOME Back
- 16. FTGS STD CONFG. Next HOME Back
- 17. BLOCK DIGRAM SEIMEN’S AFTC FILTER AMPLIFIER TRANSMITTER RECEIVER Rx 1.2 RECEIVER Rx 1.1 RESPONCE LEVEL SETTING FILTER RECEIVER Rx 2.2 RECEIVER Rx 2.1 DE- MODULATOR DE- MODULATOR RELAY-2 RELAY-1 POWER SUPPLY +12 V;+5V DC T.U. T.U. CABLES Next HOME Back
- 18. Seimen’s A.F.T.C Maximum Effective Length Of Track Circuit. Range Of Influence For R B = 1.5 OHM X K.M. R B = 1.5 OHM X K.M. FTGS 917 REMOTE FEEDING Z A ST 917 M 917 ST 917 M 917 4.5 KM <= 1.0 OHM 300 M 750 M 350 M 950 M 4.5 KM <= 0.5 OHM 350 M 850 M 400 M 1000 M 6.5 KM <= 0.5 OHM 300 M 700 M 330 M 850 M REMOTE FEEDING Z A ST 917 M 917 W/K 917 ST 917 M 917 6.5 KM <= 0.5 OHM 600 M 1200 M 750 M 1500 M FTG S 46 ZA = PERMEETED AXLE SHUNT ST=STANDARD LAYOUT RB = SPECIFIC BALLAST RESISTANCE M = CENTER – FED –LAYOUT W/K = POINTS & CROSSING LAYOUT. Next HOME Back
- 19. TRACK VACANCY DETECTION Next Next HOME Back
- 20. Modulation And Coding Next HOME Back
- 22. SEPARATION JOINTS Next HOME Back
- 23. TRACK CONNECTIONS 9M 9M 3.2M 3.2M FTGS 46 6.7 M 1.75 M FTGS 917 FTGS 917 FTGS 46 S-BOND OF STEEL WIRE ROPE 16 mm DIA IN BET. TWO AFTC’S ALFA-BONDS OF GALVANISED STEEL WIRE ROPE 16 mm DIA AT THE END OF THE AFTC’S Next HOME Back
- 24. S-BOND ARRENGEMENT Next HOME Back
- 25. Track side Connection box Next HOME Back
- 26. Tx T.U. Next HOME Back
- 27. Rx T.U. Next HOME Back
- 28. Modulation Frame FTGS917 Next HOME Back
- 29. Modulation Frame FOR POINT T.C. Next HOME Back
- 30. Modulation Frame FOR X- ING T.C. Next HOME Back
- 31. Modulation Frame FTG S 46 T.C. Next HOME Back
- 32. Modulation Frame FTG S 46 - M T.C. Next HOME Back
- 33. Transmitter Board Next HOME Back
- 34. Filter & Amplifier Board Next HOME Back
- 35. Receiver - I Board Next HOME Back
- 36. Demodulator Board Next HOME Back
- 37. Receiver – II Board Next HOME Back
- 38. A.F.T.C. From :- PARDESHI SACHIN S. S.E./Sig/KYN SSE/Sig(M)/KYN Mumbai Div. C.R. India HOME Back