remote control equipment - Indian Railways Institute of Electrical ...

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These two ATs feed the current required for the load connected between the OHE and the rail. Due to equal and opposite currents flowing in the OHE and the feeder the magnetic fields produced will neutralize causing no interference except the AT cell effect. Voltage regulation on the traction system is also better with the AT system. ********* 155
REGULATION FOR ELECTRICAL CROSSING OF RAILWAY TRACKS 9.0 Provision of the regulation for power line crossing of Railway Track, 1987 are given below. 9.0.1 Power line crossing up to and including 11kv require to be cabled and crossed underground 9.0.2 Power Line Crossings up to and including 33kv is recommended to be croosed through underground cables. 9.0.3 For overhead crossing of power lines, the minimum height above rail level to the lowest conductor including the guard wire shall be as given below. Voltage(kv) Minimum height above Rail level(m) above 11 to 66 14.10 above 66 to 132 14.60 above 132 to 220 15.40 above 220 to 400 17.90 above 400 to 500 19.30 above 500 to 800 23.40 9.0.4 The angle of overhead crossing shall be perpendicular to the track. In exceptional cases it may be permitted with a skew, the angle of deviation not exceeding 30 degree. In case it is likely to be more than this value the case should be referred to the Electrical Inspector to the government (Chief Electrical Engineer of the open Line Railway). 9.0.5 In view of high cost of modifications to Power Line Crossing and also difficulty in getting shut down of important transmission line crossings of tracks contemplated to be electrified Electrical inspectors to Government may approve crossings with lower heights provided the clearance between lowest conductor of the power line to the highest traction conductor under most adverse ambient temperature condition is as indicated below. Voltage(kv) Minimum clearance(m) 0 to 66 4.44 above 66 to 110 4.75 above 110 to 132 5.05 220 6.58 400 9.71 500 11.45 800 16.67 If power line crossing has guard wire minimum clearance from the guard wire to the highest traction conductonr should be 2 m 156
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PREFACE The book on "Power Supply I
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However transformers of capacity 13
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3. To keep the unbalance on the 3 p
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1.2 POWER SUPPLY FOR SIGNALLING 1.2
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locomotives and Electric Multiple U
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2.0 Supply System 2. POWER SUPPLY F
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figures. This charge should be real
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2.4 Scrutiny of Bills have a bearin
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c) Procedure to be followed in case
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In the territorial setup one Subord
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3.2.3 Over load Capacity of Tractio
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B. Insulation resistance will conti
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3.3. GUIDING NOTES ON MAINTENANCE 3
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f) Fully push home the wedges betwe
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eakers/interrupters should also be
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A detail history of every battery s
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light or bluish grey according to a
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(e) Overhaul, bench tests and calib
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3.5. FORTNIGHTLY MAINTENANCE 3.5.1.
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obstruction and also if the shock a
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2. Test a sample of oil for BDV. 3.
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3. Check if the terminations of the
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Fortnightly Schedule: a) Drain wate
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d) Measure the IR between auxiliary
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TRACTION DISTRIBUTION SCHEDULE OF M
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3.0 Inspection of Traction Sub-stat
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4.0 Switching Stations a) Switch Ya
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SI. No . APPLICATION AND INTERPRETA
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2.2 Oxidation Carbondioxide is the
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3.4 Pattern of generation of gases
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TABLE - I SOLUBILITY OF DIFFERENT G
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TABLE V ROGER'S METHOD OF DIAGNOSIS
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1.1 Schedules MAINTENANCE OF SF6 CI
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Point / Location Tripping Mechanism
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1.0 General Annexure 3.05 MAINTENAC
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1.5 Detailed Check Checking shall b
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DESIGN ASPECTS OF TRACTION SUBSTATI
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• Characteristics of the locomoti
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considerations enlisted in para 4.0
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xii) Load losses 135.0 kW xiii) Cur
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item Nominal System Voltage 66kV 11
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20 1250 1600 2000 245 31.5 1250 160
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i) Three post, centre post rotating
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etween live parts and different pot
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4.11.5 Design of grounding system 4
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4.12.2 BIL of various equipments us
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(d) High speed inter tripping relay
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The relay continuously monitors the
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SULFUR HEXAFLUORIDE(SF6) GAS 96 ANN
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5.0 POWER SUPPLY SYSTEM PROTECTION
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any one of the two sub-staion throu
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fault relay (132KV&25KV side) 4. ID
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Page 125 and 126: Just as the requirements of supervi
Page 127 and 128: The use of hermetically sealed comp
Page 129 and 130: The configuration used in Railway S
Page 131 and 132: This may be accomplished by several
Page 133 and 134: A typical example of commonly used
Page 135 and 136: 7.2.6.2The above sequence of messag
Page 137 and 138: 7.3 SCADA EQUIPMENT 7.3.1 General T
Page 139 and 140: 7.3.10 SCADA Software The operating
Page 141 and 142: systems are different, the basic fe
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Page 145 and 146: To combat interference, co-ordinate
Page 147 and 148: e = Er / R were introduced in the v
Page 149 and 150: It is seen that even if the lines a
Page 151 and 152: Fig. 8.3 Fig. 8.3 contains a family
Page 153 and 154: Typical Rail Current Distribution F
Page 155 and 156: 8.8 SUPPRESSION OF INTERFERENCE AT
Page 157: Magnetizing current is required to
Page 161 and 162: Kc is cable screening factor and it
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