Cover - Train Lighting - Indian Railways Institute of Electrical ...

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Setting : Normal : 124V +/- 0.5 V at 19 Amp. And at 1500 RPM Facility available for setting: 120V,122V & 124V Load Current : 42 Amp (Maximum) Battery charging current: 24 Amp (Max.) 3.3 Main Components of ERRU : The main components of the ERRU are as follows • Terminal Box • Power Unit • Universal Voltage Controller (UVC) • Static Over Voltage Protection (OVP) • Emergency Field Extension with interface • High Reliable Components 1. Half Effect Sensor. 2. ISOPACK Power Diodes. 3.4 Detail of various components of Electronic Regulator (i) TERMINAL BOX : The terminal box of the ERRU is having terminals like the conventional two number DC+ and DC-. The wiring in the coach has to be modified as per the drawing No. ER25-050-RIV.2 for 25 kW and ER4.5-W-001 for 4.5 kW, enclosed GENERAL SERVICES : TRAIN LIGHTING 31
in the manual. The terminal box also contains an adopter terminal (female) for taking the control and sensing cable to the interface mounted inside the coach. (ii) POWER Unit: The Electronic Regulator is designed with Power unit and Universal Voltage control (UVC) unit, one power unit for all AC coach alternators i.e. 18 kW and 25 kW and another Power unit for non-AC coaches i.e. 4.5 kW Alternator. The Universal Voltage Controller Unit (UVC) is common for all the regulators of AC and non-AC coach alternators. The AC coach regulator can be used for 18 kW and 25 kW Alternator without any change in the setting. The regulator identifies the alternator and makes the setting according to the power of alternator. (iii) UNIVERSAL VOLTAGE CONTROLLER (UVC) (DRG. NO.:ER25-017): The UVC controls the field current to maintain the set output voltage of the alternator. The supply is given from one phase of the alternator and rectified using single-phase bridge and given to field coil and the power devices. The gate of the power devices is controlled by a micro controller, which is programmed with all data as per the requirements of the specification. The phase voltage is fed to the primary of the control transformer and the secondary tapings are fed to the power-supplying module. The micro controller gets the power and information through the A/D converter, multiplexer and isolation amplifier. The various date and characteristics of 4.5 kW, 18 kW and 25 kW Alternators are fed to the controller and stored. As the train starts moving or as the alternator is driven the micro controller automatically gets the information from the alternator and identifies the same. As the alternator is identified the setting of various parameters for the particular rating of the alternator are set and starts working as per the set parameters. Hall effect sensors are used for sensing the output load current and battery charging current. The battery charging current is set to limit the charging current as per the battery capacity. A bunch of leads through conduit are taken from the UVC to the terminal box and then to the interface box mounted inside the coach. GENERAL SERVICES : TRAIN LIGHTING 32
Page 2 and 3: PREFACE The book of “General Serv
Page 4 and 5: 1. SYSTEMS OF TRAIN LIGHTING 1.0 Tr
Page 6 and 7: Fig. 1.1 MID-ON-GENERATION In this
Page 8 and 9: 1.3 END-ON-GENERATION Rakes of Rajd
Page 10 and 11: Fig. 4 GAUGE FOR ALIGNMENT OF DYNAM
Page 12 and 13: HMTD Engineering CGL (Crompton Grea
Page 14 and 15: Fig. 7 Flux Density Distribution Cu
Page 16 and 17: GENERAL SERVICES : TRAIN LIGHTING 1
Page 18 and 19: amplifier. This enables magnetic am
Page 20 and 21: The schematic diagram of electrical
Page 22 and 23: FIG 12 Principle of operation The b
Page 24 and 25: Alternator data Output voltage Curr
Page 26 and 27: e sufficient to cause conduction of
Page 28 and 29: FIG. 14 GENERAL SERVICES : TRAIN LI
Page 30 and 31: FIG. 16 GENERAL SERVICES : TRAIN LI
Page 32 and 33: • Moulded Hall sensors for curren
Page 36 and 37: (iv) STATIC OVER VOLTAGE PROTECTION
Page 38 and 39: Note: • Emergency field extension
Page 40 and 41: DO’S : DON’TS : 1. Connect all
Page 42 and 43: 3.6 TROUBLE SHOOTING INSTRUCTIONS F
Page 44 and 45: 4. Battery current limit. 5. OVP is
Page 46 and 47: 4. BATTERIES 4.0 Conventional Lead
Page 48 and 49: The nominal voltage of a lead acid
Page 50 and 51: 4.4.9 The rating assigned to the ce
Page 52 and 53: purpose. Check up correct polarity
Page 54 and 55: 15. Record individual voltage of ce
Page 56 and 57: TABLE - II RELEVANT DATA FOR INITIA
Page 58 and 59: ody and result in leakages in servi
Page 60 and 61: Sulphate resulting in the negative
Page 62 and 63: Construction of VRLA Cell 1. Termin
Page 64 and 65: 5.7 MAINTENANCE The aim in maintena
Page 66 and 67: 5.12 The commutator surface should
Page 68 and 69: send defective fan to shop for atte
Page 70 and 71: magnets by sinking them further ins
Page 72 and 73: a. Ceiling light fittings in I, II&
Page 74 and 75: c) Replace switch covers and Rise c
Page 76 and 77: 7. MAINTENANCE SCHEDULES 7.1 SCHEDU
Page 78 and 79: In case the gap between two halves
Page 80 and 81: Do not change generator pulleys as
Page 82 and 83: 8. Check for loose connection in ba
Page 84 and 85:
K) REFRIGERATORS: 1. Check up DC co
Page 86 and 87:
9. Unit Exchange Spares (UES) shoul
Page 88 and 89:
GENERAL SERVICES : TRAIN LIGHTING 8
Page 90 and 91:
To reduce with number of power cars
Page 92 and 93:
iv) Over speed The high water tempe
Page 94 and 95:
9.0 INTRODUCTION 9. MID - ON - GENE
Page 96 and 97:
9.3 LOAD CALCULATION FOR MOG RAKE :
Page 98 and 99:
FORMATION KW AMPS SLR 1.6 7.6 7.6 7
Page 100 and 101:
10. FIRE HAZARDS 10.1: Excessive cu
Page 102 and 103:
(ii) Insulation resistance under fa
Page 104 and 105:
Sr. No. 1 Circuit Positive/ Negativ
Page 106 and 107:
following fire retardant paints are
Page 108 and 109:
8, Fan and Regulator +ve -ve 9. Lam
Page 110 and 111:
(SHEET-1) TROUBLE SHOOTING INSTRUCT
Page 112 and 113:
(SHEET III) ANNEXURE III If fault i
Page 114:
GENERAL SERVICES : TRAIN LIGHTING 1
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