Railway Electric Traction Specifications
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Questions and Answers

What type of transformer is specified by ETI/PSI/78?

  • Three-phase oil filled transformer
  • Small scale rectifier transformer
  • Single-phase dry type transformer
  • Single-phase booster transformer (correct)

    • Which voltage rating is associated with the dry type cast resin transformer mentioned in ETI/PSI/80?

  • 50 kV
  • 10 kV
  • 240 V
  • 25 kV (correct)

    • Which item is classified as obsolete?

  • ETI/PSI/14(1/86)
  • ETI/PSI/13(3/85)
  • ETI/PSI/19(7/85)
  • ETI/PSI/11(12/81) (correct)

    • What is the voltage rating of the booster transformer mentioned?

    <p>25 kV</p> Signup and view all the answers

    For what application is the 3.3 MVA transformer in ETI/PSI/83 designed?

    <p>DC traction sub-station</p> Signup and view all the answers

    What type of lightning arrestor is referenced in ETI/PSI/82?

    <p>Metal oxide gapless type</p> Signup and view all the answers

    Which of the following has been superseded by ETI/PSI 134(8/89)?

    <p>ETI/PSI/18(8/75)</p> Signup and view all the answers

    What is the application of ETI/PSI/15(10/73)?

    <p>Transformers for 25 kV/240 V</p> Signup and view all the answers

    Which of the following transformers is listed as oil-filled?

    <p>280 KVA 25 kV single phase conventional transformer</p> Signup and view all the answers

    Which item includes a specification for double pole and triple pole isolators?

    <p>ETI/PSI/20B(7/79)</p> Signup and view all the answers

    What type of transformer is ETI/PSI/15A(7/82)?

    <p>LT supply transformer</p> Signup and view all the answers

    What is the Ah rating of the lead acid batteries specified in ETI/PSI/21(6/81)?

    <p>400 Ah</p> Signup and view all the answers

    What type of conductor is specified for overhead/railway traction in the document?

    <p>Cadmium copper conductor</p> Signup and view all the answers

    What is the ratio mentioned for three pulley type regulating equipment?

    <p>3:1 Ratio</p> Signup and view all the answers

    Which of the following is associated with a nominal voltage of 220 kV?

    <p>Solid core cylindrical post insulator system</p> Signup and view all the answers

    What type of insulators is used for the 25 kV single phase 50 Hz overhead traction line?

    <p>Polymer insulators</p> Signup and view all the answers

    What is the main function of the interlock mentioned in ETI/OHE/52?

    <p>Controlling ac traction switchgears</p> Signup and view all the answers

    Which of the following refers to the discharge/earthing pole assembly for 25 kV ac traction?

    <p>ETI/OHE/51</p> Signup and view all the answers

    What equipment type is referred to in ETI/OHE/64?

    <p>Solid core cylindrical post insulator system</p> Signup and view all the answers

    Which item relates to the specifications for an 8 wheeler OHE Inspection Car?

    <p>ETI/OHE/59</p> Signup and view all the answers

    What is the purpose of the contact wire mentioned in ETI/OHE/56?

    <p>Overhead traction</p> Signup and view all the answers

    What component is described as a ‘Phase break’ in the document?

    <p>Short neutral section assembly</p> Signup and view all the answers

    Which specification number corresponds to the annealed standard copper conductor for jumper wire?

    <p>ETI/OHE/3(1/83)</p> Signup and view all the answers

    What type of coating is mentioned for steel masts and tubes used on 25 kV AC OHE?

    <p>Hot dip zinc coating</p> Signup and view all the answers

    Which specification deals with solid core porcelain insulators for 25 kV 50 Hz overhead lines?

    <p>ETI/OHE/15(9/91)</p> Signup and view all the answers

    Which of the following options is labeled as withdrawn?

    <p>RE/OHE/28(3/72)</p> Signup and view all the answers

    What is specified by ETI/OHE/44(7/78)?

    <p>PVC hand rail covering</p> Signup and view all the answers

    Which specification relates to splices and ending clamps?

    <p>RE/OHE/10(3/66)</p> Signup and view all the answers

    What type of material do ETI/OHE/18(4/84) specifications refer to?

    <p>Steel and stainless steel bolts, nuts, and washers</p> Signup and view all the answers

    Which specification is related to hard drawn grooved copper contact wire for AC electric traction?

    <p>ETI/OHE/19(2/92)</p> Signup and view all the answers

    What is specified by RE/OHE/23(9/61)?

    <p>Pull lifts</p> Signup and view all the answers

    What is the voltage rating of the lead acid batteries specified for remote control equipment?

    <p>24 V</p> Signup and view all the answers

    Which ETI/PSI number corresponds to the standard for electrical distribution systems in stations?

    <p>ETI/PSI/44</p> Signup and view all the answers

    Which type of equipment is covered under ETI/PSI/36?

    <p>Current transformer</p> Signup and view all the answers

    What voltage rating do the lightning arrestors from ETI/PSI/42 and ETI/PSI/39 hold?

    <p>96 kV and 60 kV</p> Signup and view all the answers

    Which ETI/PSI standard pertains to telemetering equipment for 25 kV AC traction?

    <p>ETI/PSI/47</p> Signup and view all the answers

    What type of isolators is mentioned in ETI/PSI/50B?

    <p>Motor operated</p> Signup and view all the answers

    Which reference specifies potential transformers with a voltage rating of 66 kV?

    <p>ETI/PSI/56</p> Signup and view all the answers

    What does ETI/PSI/31 specify standards for?

    <p>Drawings for power supply installations</p> Signup and view all the answers

    Which equipment is outlined to be supervised by ETI/PSI/37?

    <p>Battery chargers</p> Signup and view all the answers

    Which document supersedes ETI/PSI/42 regarding lightning arrestors?

    <p>ETI/PSI/137(8/89)</p> Signup and view all the answers

    What is the voltage rating of the Double pole & triple pole motor-operated isolators referenced in ETI/PSI/20B?

    <p>132 kV</p> Signup and view all the answers

    Which specification number refers to the Lightning Arrester, Valve type 42 kV?

    <p>ETI/PSI/19(7/85)</p> Signup and view all the answers

    Which of the following specifications has been classified as obsolete?

    <p>ETI/PSI/13(3/85)</p> Signup and view all the answers

    What is the Ah rating of the lead-acid batteries specified in ETI/PSI/25(6/81)?

    <p>200 Ah</p> Signup and view all the answers

    Which of the following reference numbers corresponds to the Control & relay board for railway traction sub-station?

    <p>ETI/PSI/27(6/87)</p> Signup and view all the answers

    Which document has been superseded regarding the Lightning Arrestor, 120KV?

    <p>ETI/PSI137(8/89)</p> Signup and view all the answers

    What is the KVA rating of the transformers specified by ETI/PSI/15A(7/82)?

    <p>100 KVA</p> Signup and view all the answers

    What is the primary function of the insulating transformer oil purification plant referenced in ETI/PSI/62?

    <p>To remove impurities from electrical insulation oil</p> Signup and view all the answers

    Which piece of equipment is designed for use in railway traction sub-stations as stated in ETI/PSI/66?

    <p>Single pole SF-6 circuit breakers</p> Signup and view all the answers

    In ETI/PSI/75, what type of capacitor is mentioned for enhancing the railway system's performance?

    <p>Single phase series capacitor</p> Signup and view all the answers

    What is the capacity of the shunt capacitor equipment specified in ETI/PSI/67?

    <p>100 kVAR</p> Signup and view all the answers

    Which specification number refers to the control and relay panel board for ac traction sub-stations?

    <p>ETI/PSI/65</p> Signup and view all the answers

    Which specification number corresponds to the hot dip zinc coating on steel masts used in overhead equipment?

    <p>ETI/OHE/13(4/84)</p> Signup and view all the answers

    Which item refers to the specification for aluminum alloy sections used in overhead equipment?

    <p>ETI/OHE/21(9/74)</p> Signup and view all the answers

    What material is specified for use in solid core porcelain insulators for 25 kV 50 Hz overhead lines?

    <p>Porcelain</p> Signup and view all the answers

    Which specification mentions stainless steel wire rope for use in overhead equipment?

    <p>ETI/OHE/14(7/86)</p> Signup and view all the answers

    Which specification relates to the hard drawn copper catenary used for work under construction?

    <p>ETI/OHE/37(12/73)</p> Signup and view all the answers

    Which specification includes references to galvanized steel wire?

    <p>ETI/OHE/36(12/73)</p> Signup and view all the answers

    Which item is classified as withdrawn according to the specified details?

    <p>ETI/OHE/44(7/78)</p> Signup and view all the answers

    Which specification covers the application of splices and ending clamps?

    <p>RE/OHE/10(3/66)</p> Signup and view all the answers

    In the specifications, which type of wire is specifically identified for use in the 25 kV AC electric traction?

    <p>Copper wire</p> Signup and view all the answers

    Which specification number is associated with Aluminum OHE wire?

    <p>ETI/OHE/54(2/85)</p> Signup and view all the answers

    What is the function of ETI/PSI/3(8/75)?

    <p>Lightning arrestor, 7.5 kV</p> Signup and view all the answers

    Which specification is not applicable for OHE mast painting?

    <p>ETI/C/1(1/80)</p> Signup and view all the answers

    Which specification is noted as obsolete?

    <p>ETI/PSI/4(9/79)</p> Signup and view all the answers

    What type of materials are referenced in ETI/OHE/55(4/90)?

    <p>Bimetallic (Al-Cu) strip</p> Signup and view all the answers

    ETI/C/4(5/88) is related to what kind of specification?

    <p>Cold roll formed mast</p> Signup and view all the answers

    Which specification describes the rating of potential transformers?

    <p>ETI/PSI/8(12/79)</p> Signup and view all the answers

    What type of wire is detailed under ETI/OHE/101 (8/83)?

    <p>Grooved aluminum wire</p> Signup and view all the answers

    What does the specification ETI/PSI/4(9/79) deal with?

    <p>Interruptors</p> Signup and view all the answers

    What is indicated by the remarks section for ETI/C/3(5/83)?

    <p>Specification for zinc coating</p> Signup and view all the answers

    What is the voltage rating specified for the double pole and triple pole isolators in ETI/PSI/50?

    <p>66 kV</p> Signup and view all the answers

    Which document outlines the standards relevant to selective frequency level meter analyzers?

    <p>ETI/PSI/38</p> Signup and view all the answers

    Which specification pertains to earthing blade assemblies for isolators?

    <p>ETI/PSI/50A</p> Signup and view all the answers

    What is the voltage rating for the lightening arrestors mentioned in ETI/PSI/43?

    <p>60 kV</p> Signup and view all the answers

    Which specification number refers to potential transformers rated at 132 kV?

    <p>ETI/PSI/35</p> Signup and view all the answers

    Which item describes telemetering equipment specifically for 25 kV AC traction?

    <p>ETI/PSI/47</p> Signup and view all the answers

    Which ETI/PSI document has been superseded by ETI/PSI 137?

    <p>ETI/PSI/42</p> Signup and view all the answers

    What type of equipment is defined in ETI/PSI/44?

    <p>Color light signalling supply</p> Signup and view all the answers

    Which specification covers the standards for single pole vacuum circuit breakers?

    <p>ETI/PSI/46</p> Signup and view all the answers

    Which document outlines standards for drawings related to power supply installations?

    <p>ETI/PSI/31</p> Signup and view all the answers

    Study Notes

    List of Specifications and Drawings for Equipments and Materials for Railway Electric Traction

    • RDSO Specifications: Chapter I, Section I covers overhead equipment.

    Conventional Overhead Equipment (OHE)

    • Copper Conductors: Annealed standard copper for jumpers, conductor, busbars, and other components.
    • Steel Components: Steel tubes, clamps, and other structural elements. Hot dip zinc coating is used for corrosion resistance.
    • Insulators (Porcelain): Solid core porcelain insulators for 25 kV 50 Hz overhead lines.
    • Insulators (Metal): Stainless steel bolts, nuts, and washers. Single and double pole isolators.
    • Other Materials: Aluminum alloy sections and tubes used for various components of the overhead system. Stainless steel wire rope used for support. PVC covering on handrails. Withdrawn items (obsolete or superseded by other specifications): Pull lifts, sectioning insulators, etc.

    Miscellaneous

    • Cadmium Copper Conductors: Used for overhead railway traction.
    • Discharge/Earthing Poles: Assembly for 25 kV AC traction.
    • Interlocks: For AC traction switchgears.
    • Principles for OHE Layout: Layout plans and sectioning diagrams for 25 kV AC traction.
    • Copper Wire Rods: Continuous cast hot rolled electrolytic copper wire.
    • OHE Inspection Car: Specifications for 8 wheeler cars for inspections.
    • Insulators (Polymer): Polymer insulators are part of the 25 kV/50 Hz overhead traction line specification.
    • Glass Insulators: Toughened glass insulators are used.
    • Earthing Codes: Codes for bonding and earthing components of the 25 kV AC traction system.
    • Aluminum OHE Components: Specifications for aluminum overhead equipment, including grooved contact wire and conductor wire of a specific dimension.
    • Civil Engineering Specifications: Standards for OHE construction, including specifications for painting, concrete, and other materials.
    • Power Supply Installations: Specifications, including battery chargers for 110-volt batteries (40 Ah), lightning arrestors (7.5 kV), and potential transformers (25 kV). Superseded items also listed. Specific information for 25kV AC/DC systems. Substation details.
    • Drawing Standards: Standards for drawings for power supply installations and other parts of the OHE.
    •  Electrical Components: Detailed specification for various electrical components like transformers, circuit breakers, and other related items.
    •  Power Supply Specifications: Data for power supply (25kV AC system), including battery chargers, lightning arrestors, interruptors, boosters, and other related items.
    •  Drawing Modifications and Features: Various modifications, and specifications for drawings related to OHE and power supply components.

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    Railway Electric Traction - RDSO Specifications PDF

    Description

    This quiz covers the specifications and drawings for equipment and materials used in railway electric traction. It includes details on overhead equipment, materials like copper, steel, and porcelain insulators, along with obsolete items. Test your knowledge on railway technologies and standards.

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