Type B Vital Relays - Alstom

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Theory of Operation A C E G A' + LOCAL - LOCAL - LOCAL + LOCAL + LOCAL - TRACK + TRACK - B TRACK D - TRACK + F TRACK H + LOCAL - - LOCAL + - LOCAL + + LOCAL - + TRACK - + TRACK - - TRACK + - TRACK + LOCAL CURRENT TRACK CURRENT TRACK CURRENT LAGS LOCAL CURRENT BY 90° A B C D E F G H A' Figure 2–46. Local and Track Current Cycles At A and A', the local current is at a positive maximum value and the track current is zero. The local winding is producing all the magnetic lines of force and their paths are shown by the dotted lines. P1457, Rev. Nov/07 2–48 <strong>Alstom</strong> Signaling Inc.
Theory of Operation In each snapshot, notice the solid arrow, which is accentuated merely for reference and not because the lines of force are concentrated in that particular path. Compare the position of this arrow in snapshots B, C, D, and E. See how the arrow moves across the whole length of the air gap, cutting through and across the vane, much the same as the magnetic lines of force of the permanent magnet in Figure 2–45. All the other arrows do the same. Here, then, is the counterpart of the moving permanent magnet, except that, in this case, the magnetic structures are stationary, and the alternating current produces the magnetic flux motion. For the relay to produce maximum torque with the minimum power input, the local and track current must be out of step by a quarter of a cycle or 90 degrees. Track relays, under adverse track conditions, may require a phase-shifting device inserted in the local phase to approximate the ideal current relationship. Figures 2–47 and 2–48 show the parallel and series hookup of local and track windings, while Figure 2–49 shows relay and plugboard wiring along with some vane relay supporting components. PARALLEL HOOKUP LO1– 14 T1– 64 LO2– 13 LO1+ 12 T2– 63 T1+ 62 LO2+ 11 61 HEAVY LINES ARE PLUGBOARD WIRING T2+ T = TRACK WINDING LO = LOCAL WINDING Figure 2–47. Parallel Hookup of Windings P1457, Rev. Nov/07 2–49 <strong>Alstom</strong> Signaling Inc.
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Type B Vital Relays Copyright © 19
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LIST OF EFFECTIVE PAGES P1457, Type
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PREFACE NOTICE OF CONFIDENTIAL INFO
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ABOUT THE MANUAL This manual is int
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MANUAL SPECIAL NOTATIONS In the Als
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Topic TABLE OF CONTENTS Page 1. SEC
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Topic TABLE OF CONTENTS (CONT.) Pag
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Description LIST OF FIGURES (CONT.)
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Description LIST OF TABLES Page Tab
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General Description 1. SECTION 1 -
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General Description 1.2.2. Identifi
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General Description 1.2.3. Relay Pr
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General Description 1.2.4. Mounting
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General Description The registratio
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General Description 1.2.7.2. Test T
Page 33 and 34: General Description 16 26 36 46 56
Page 35 and 36: General Description 1.2.10. Relay C
Page 37 and 38: Theory of Operation 2. SECTION 2 -
Page 39 and 40: Theory of Operation 2.2. RELAY CONT
Page 41 and 42: Theory of Operation 2.2.2.1. Contac
Page 43 and 44: Theory of Operation 2.2.2.3. Heavy-
Page 45 and 46: Theory of Operation 2.2.3. Coils A
Page 47 and 48: P1457, Rev. Nov/07 2-11 Alstom Sign
Page 49 and 50: Theory of Operation 2.3. BIASED-NEU
Page 51 and 52: Theory of Operation 2.4. DC LINE RE
Page 53 and 54: Theory of Operation S NO VOLTAGE N
Page 55 and 56: Theory of Operation R N NORMAL CONT
Page 57 and 58: Theory of Operation 2.4.4. Microchr
Page 59 and 60: Theory of Operation 2.4.4.2.2. Appl
Page 61 and 62: Theory of Operation Group Space- Fr
Page 63 and 64: Theory of Operation 2.4.4.3.1. Appl
Page 65 and 66: Theory of Operation 2.5. DC SPECIAL
Page 67 and 68: Theory of Operation (FRONT VIEW) 1E
Page 69 and 70: Theory of Operation 2.5.4. Switch-O
Page 71 and 72: Theory of Operation TRACK CIRCUIT E
Page 73 and 74: Theory of Operation 2.5.6. Code Rat
Page 75 and 76: Theory of Operation 2.5.7. Code-Fol
Page 77 and 78: Theory of Operation Figure 2-38. VT
Page 79 and 80: Theory of Operation Figure 2-41 sho
Page 81 and 82: Theory of Operation VANE CONTACTS P
Page 83: Theory of Operation EDDY CURRENT IN
Page 87 and 88: Installation 3. SECTION 3 - INSTALL
Page 89 and 90: Installation Table 3-2. B Relay Ins
Page 91 and 92: Installation Table 3-2. B Relay Ins
Page 93 and 94: Installation Table 3-3. Microchron
Page 99 and 100: Installation Table 3-5. AC Microchr
Page 101 and 102: Installation Table 3-5. AC Microchr
Page 103 and 104: Preventive Maintenance 4. SECTION 4
Page 105 and 106: Preventive Maintenance 4.3. PREVENT
Page 107 and 108: Preventive Maintenance Table 4-2. T
Page 109 and 110: Preventive Maintenance Table 4-3. V
Page 111 and 112: Preventive Maintenance 4.5. ELECTRI
Page 113 and 114: Preventive Maintenance 4.5.1. AC Li
Page 115 and 116: Preventive Maintenance 4.5.3. Biase
Page 117 and 118: Preventive Maintenance 4.5.5. Code
Page 119 and 120: Preventive Maintenance 4.5.7. Micro
Page 121 and 122: Preventive Maintenance 4.5.9. Polar
Page 123 and 124: Preventive Maintenance 4.5.11. Swit
Page 125 and 126: Troubleshooting 5. SECTION 5 - TROU
Page 127 and 128: Troubleshooting Table 5-1. Troubles
Page 129 and 130: Troubleshooting DC RELAY DOES NOT R
Page 131 and 132: Troubleshooting AC VANE RELAY DOES
Page 133 and 134: Troubleshooting MICROCHRON II TIMER
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Corrective Maintenance 6. SECTION 6
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Corrective Maintenance Table 6-2. B
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Corrective Maintenance Table 6-2. B
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Corrective Maintenance Table 6-4. T
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Corrective Maintenance NOTE For det
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Corrective Maintenance 6.4.4. Curre
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Corrective Maintenance 6.5. MECHANI
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Corrective Maintenance Table 6-10.
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Corrective Maintenance 6.5.2. Mecha
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Corrective Maintenance 6.5.3. Micro
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Parts Catalog 7. SECTION 7 - PARTS
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Parts Catalog 7.4. B1 BIASED-NEUTRA
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Parts Catalog Table 7-2. B1 Neutral
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Parts Catalog 7.5. B1 CODE-RESPONSI
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Parts Catalog 46F Figure 7-3. B1 Co
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Parts Catalog Table 7-3. B1 Code-Re
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Parts Catalog Table 7-3. B1 Code-Re
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Parts Catalog 7.7. B1 ELECTRONICALL
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Parts Catalog Table 7-4. B1 Slow Pi
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Parts Catalog Table 7-5. B2 Neutral
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Parts Catalog 7.9. B2 BIASED-NEUTRA
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Parts Catalog Table 7-6. B2 Biased-
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Parts Catalog Table 7-7. B2 Vane Re
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Parts Catalog 7.11. B2 AC VANE RELA
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Parts Catalog Table 7-8. B2 Vane Re
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Parts Catalog Figure 7-10. B2 Code
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Parts Catalog Table 7-9. B2 Code Ra
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Parts Catalog Table 7-9. B2 Code Ra
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Parts Catalog FRONT VIEW 1 2 3 4 5
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Parts Catalog Table 7-10. B2 Microc
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Parts Catalog 7.14. B2 AC MICROCHRO
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Parts Catalog Table 7-11. B2 AC Mic
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Parts Catalog 7.15. TYPE VTB POLAR-
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Parts Catalog Table 7-12. VTB Polar
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Parts Catalog Table 7-12. VTB Polar
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P1457, Rev. Nov/07 7-51 Alstom Sign
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P1457, Rev. Nov/07 7-53 Alstom Sign
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Parts Catalog MARKED END OF MAGNET
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Parts Catalog NOTE 1 When ordering
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Parts Catalog , 3B 31 E 25A 25B 30
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Parts Catalog Table 7-16. B Relay P
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Parts Catalog Table 7-16. B Relay P
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Parts Catalog 7.18. B RELAY REGISTR
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Parts Catalog Table 7-17. B Relay R
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Relay Engineering Data (ED) sheet L
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Glossary B. APPENDIX B - GLOSSARY B
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Glossary Overpressure - • Dead We
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Tools and Kits C. APPENDIX C - TOOL
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Tools and Kits 1 A B AAR CRIMP TOOL
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Tools and Kits C.3. SHOP TEST RACK
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Tools and Kits The vane relay test
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FOR QUESTIONS AND INQUIRIES, CONTAC
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Type B Vital Relays - Alstom

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