Traction Rolling Stock - Indian Railways Institute of Electrical ...

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Leg I A I = 704 cm 2 (Regulating transformer) Leg II A II = 1295 cm 2 {Fixed ratio main Leg III A III = 704 cm 2 transformer} FIG 1.2.1 Leg flux diagram Leg I carries the winding of the regulating transformer stepping down the voltage of the overhead system to a value permissible for the equipment. The series winding A 32 ... A 33 has 80 turns. Cross sectional area = 27.45 mm 2 The main winding A0 ...... A 32 has 960 turns Cross sectional Area = 27.45 mm 2 According to the above, the complete winding of the regulating transformer has: N 1 = 80 + 960 = 1040 turns According to the actual position of the tap changer. The active number of turns varies from Pos. 0,1,2,3,4....... 28,29,30,31, 32. NR = 0, 30,60, 90, 120....... 840,870,900,930,960 turns. In addition to the winding of the regulating transformer leg I carries the electrically separated winding a0...al of the auxiliary circuits also. This winding has 18 turns. Cross sectional area = 248 mm 2 The legs II and III carry the primary and secondary windings of the main transformer. The induction effect of the winding of leg III on the winding of leg II varies according to the position of the tap changer. The design of the two legs is similar, the difference being in the cross sectional area only. The primary windings of both legs are connected in series and each leg has
Np = 288 turns The beginning of the primary windings is led to the terminal A34 and is connected through the tap changer with the tapings A0 to A32 of the regulating transformer. The end of the winding is permanently connected to A0 internally Conductor cross Sectional area = 4 7 = 28 sq. mm - Auto winding 3.8 5.5 sq. mm.- Primary winding The secondary windings (motor winding) are composed of two branches. a3..... a4 and a5..... a6 Each branch has two sections connected in series, each having Ns = 12 on both legs II and III Conductor cross area = 3.8 5.5 mm 2 (Primary and Secondary winding) 1.2.2 BRIEF DATA OF POWER TRANSFORMER Type : HETT 3900 Supplier : NGEF, CROMPTON GREAVES,BHEL
Page 2 and 3: PREFACE The book on "Traction Rolli
Page 4 and 5: A.C. LOCO EQUIPMENTS 1.1: ROOF EQUI
Page 6 and 7: Fig.1.1.3
Page 10 and 11: Voltage Primary output : Primary ma
Page 12 and 13: y the main shaft through gear arran
Page 14 and 15: Base load … 500 ohms,300W (12nos.
Page 16 and 17: 1.4.6 Over-voltage Over -voltage in
Page 18 and 19: 2.3 BOGIE COMPONENTS Bogie of a loc
Page 20 and 21: Fig. 2.5. Primary and secondary sus
Page 23: 2.8 BOGIE OF WAG/7 This is a 3 axle
Page 26 and 27: Fig. 1. Single Reduction Gear Drive
Page 31 and 32: FIG.3.6 ROTOR HOLLOW SHAFT DRIVE
Page 34 and 35: 5. POWER CONTROL AND AUXILIARY CIRC
Page 36 and 37: Permanent field weakening resistanc
Page 38 and 39: 5.4.1 Arno converter (CVAR) The sin
Page 40 and 41: pantographs 1 and 2 are lowered. Po
Page 42 and 43: the tap changer comes to a standsti
Page 44 and 45: d) The tap changer GR must be at po
Page 46 and 47: 5.7.3.1 Control of transformer tap
Page 48 and 49: VE2. The limit contacts of 61-62 fo
Page 50 and 51: With multiple unit operation the ma
Page 52 and 53: elay Q48. If the wheels on one bogi
Page 54 and 55: 5.9.1.4 Lamp LSGR (Green) Tap chang
Page 56 and 57: cabs are controlled by means of the
Page 73 and 74:
6. AIR COMPRESSOR 6.0 INTRODUCTION
Page 75 and 76:
6.3 COMPRESSOR DETAILS Model : TRC
Page 77 and 78:
1) Type & Make : 1) Northey Type 25
Page 79 and 80:
one shaft to the other, and maintai
Page 81 and 82:
7. BRAKE SYSTEM OF ELECTRIC LOCOMOT
Page 83 and 84:
y the driver’s vacuum brake valve
Page 87 and 88:
7.2 DUAL BRAKE SYSTEM ON ELECTRIC L
Page 89 and 90:
is run to maintain vacuum in the sy
Page 91 and 92:
1. MR equalising pipe 2. BC equalis
Page 97 and 98:
7.2.11 Gauges There are five gauges
Page 99 and 100:
akes. e) When Driver makes an emerg
Page 101 and 102:
train. Failure of the orange lamps
Page 104 and 105:
8. MAINTENANCE, AND OVERHAUL SCHEDU
Page 106 and 107:
e made to increase the interval bet
Page 108 and 109:
8.5.2.6 Battery: Check and record b
Page 110 and 111:
cab 1 a) Raising of pantograph. b)
Page 112 and 113:
d) Check containers of batteries fo
Page 114 and 115:
Section E4 Carry out following: a)
Page 116 and 117:
f) Inspect all resistance, includin
Page 118 and 119:
) Check capacitor of headlight stab
Page 120 and 121:
8.11.4.12 Speedometers- Calibration
Page 122 and 123:
8.15.3 One copy of the certificate
Page 124 and 125:
to eliminate the possibility of fir
Page 126 and 127:
invariably be a member of the inqui
Page 128 and 129:
Two capacitors of 0.05 microfarads
Page 130 and 131:
Notch 18 T3 and T8 closed, connecti
Page 132 and 133:
These machines are capacitor start
Page 134:
The main lighting circuits are fed
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Traction Rolling Stock - Indian Railways Institute of Electrical ...

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