SPECIFICATION No. TI/SPC/PSI/ISOLTR/0130 MINISTRY OF rdso. DRAFT SPECIFICATION No. TI/SPC/PSI/ISOLTR/0130

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  • DRAFT SPECIFICATION No. TI/SPC/PSI/ISOLTR/0130

    RESEARCH DESIGNS AND STANDARDS ORGANISATION

    Effective

    From 21.03.2013

    TECHNICAL SPECIFICATION for

    25kV/72.5KV/123KV/145KV/245KV ac Single Pole , Double Pole & Triple Pole

    Motorized/ Manual OPERATED ISOLATORS FOR RAILWAYS ac TRACTION SUB-STATIONS

    Page

    1 of 51

    SPECIFICATION No. TI/SPC/PSI/ISOLTR/0130

    GOVERNMENT OF INDIA

    MINISTRY OF RAILWAYS

    Technical Specification

    for

    i. 25KV ii. 66KV iii. 123KV

    iv. 145KV v. 245 KV

    Motorized/Manual operated Isolators

    For Railway Electric Traction

    RESEARCH DESIGNS AND STANDARDS ORGANIZATION

    GOVERNMENT OF INDIA

    MINISTRY OF RAILWAYS

    LUCKNOW - 226 01

  • DRAFT SPECIFICATION No. TI/SPC/PSI/ISOLTR/0130

    RESEARCH DESIGNS AND STANDARDS ORGANISATION

    Effective

    From 21.03.2013

    TECHNICAL SPECIFICATION for

    25kV/72.5KV/123KV/145KV/245KV ac Single Pole , Double Pole & Triple Pole

    Motorized/ Manual OPERATED ISOLATORS FOR RAILWAYS ac TRACTION SUB-STATIONS

    Page

    2 of 51

    INDEX

    Clause Description

    1.0 Scope

    2.0 Climatic, Environmental & operating condition

    3.0 List of related specifications

    4.0 Rating, name plate details and other information

    5.0 Design and constructional features

    6.0 Locking

    7.0 Earth contact assembly

    8.0 Arcing horn

    9.0.9.1,9.2,9.3 Motor, Gear, Space heater, Terminal bock and Wiring

    10.0 Test

    11.0 Test Method

    12.0 Revalidation of type tests

    13.0 Bulk Manufacturing

    14.0 Technical data and drawing

    15.0 Installation, Testing and Commissioning

    16.0 Clause wise conformity, deviations etc.

    17.0 Warranty

    18.0 Training of Indian Railway’s engineers

    19.0

    Packing and Dispatch

    Annexure-A SCHEDULE OF GUARANTED PERFORMNCE DATA

    TECHNICAL AND OTHER PARTICULARS FOR ISOLAOR.

    Annexure-B following information shall be furnished by the manufacturer /supplier:

    Annexure-C Definition

    Annexure-D General arrangement of motorized isolator

  • DRAFT SPECIFICATION No. TI/SPC/PSI/ISOLTR/0130

    RESEARCH DESIGNS AND STANDARDS ORGANISATION

    Effective

    From 21.03.2013

    TECHNICAL SPECIFICATION for

    25kV/72.5KV/123KV/145KV/245KV ac Single Pole , Double Pole & Triple Pole

    Motorized/ Manual OPERATED ISOLATORS FOR RAILWAYS ac TRACTION SUB-STATIONS

    Page

    3 of 51

    1. SCOPE

    1.1 This specification applies to single pole double pole & triple pole

    motorized/manual operated isolators with earthling switch/without earthling

    switch as specified by purchases in the particular tender for outdoor use in

    25kV ac 50 Hz single phase/2x25kV AT Feeding System for overhead

    equipment (OHE), Traction Substations and Switching Stations. The

    Specification also applies to the operating mechanism of the Isolator and

    Earthling Switch. The Isolator shall be mounted on a mast/structure as

    required. The operation of isolators and supply of battery charger through a

    two core cable shall be possible from a remote location at more than 500 m

    .The status of isolators i.e. whether Close or Open shall be available at the

    station master chamber. This Specification supersedes following Specification:-

    Sl.No Specification No. Description

    1. ETI/PSI/41(1/73) 110kV,Double Pole and Triple Pole Isolators

    2. ETI/PSI/20(2/73) 132kV,Double Pole and Triple Pole Isolators

    3. ETI/PSI/20A(6/79) 132kV,Earthing Blade Assembly for Double

    Pole and Triple Pole Isolators

    4. ETI/PSI/20B(7/79) 132kv,Double Pole and Triple Pole Motor

    Operated Isolators

    5. ETI/PSI/50(8/79) 66kV,Double Pole and Triple Pole Isolators

    6. ETI/PSI/50A(8/79) 66kV,Double Pole and Triple Pole Isolators

    7. ETI/PSI/50B(4/80) 66kV,Double Pole and Triple Pole Motor

    Operated Isolators

    8. ETI/PSI/88(4/87) 220kV,Double Pole and Triple Pole Isolators

    9. ETI/PSI/122(3/89) 245kV/145kV/123kV/72.5kV Double Pole

    and Triple Pole Isolators

    10. ETI/PSI/133(8/89) 25kV,ac Double Isolators for 2x25kV AT

    Feeding System

  • DRAFT SPECIFICATION No. TI/SPC/PSI/ISOLTR/0130

    RESEARCH DESIGNS AND STANDARDS ORGANISATION

    Effective

    From 21.03.2013

    TECHNICAL SPECIFICATION for

    25kV/72.5KV/123KV/145KV/245KV ac Single Pole , Double Pole & Triple Pole

    Motorized/ Manual OPERATED ISOLATORS FOR RAILWAYS ac TRACTION SUB-STATIONS

    Page

    4 of 51

    11. ETI/OHE/16(1/94) 25kV,ac Single Pole and Double Pole

    Isolators

    12. TI/SPC/PSI/ISOLTR/1060.

    25kV,ac Single Pole and Double Pole

    Motorized Isolators

    1.2 Scope of supply

    The isolator shall be complete with all parts, fittings and accessories including mounting frame work, insulators, operating rod, operating mechanism box, battery, battery charger remote control box along with OPEN/CLOSE

    indication, cable size, insulators, motor operating mechanism and battery and charger necessary for its efficient operation. All such parts, fittings and

    accessories except cables shall be deemed to be within the scope of this specification, whether specifically mentioned or not. The isolator, single, double and triple pole, shall be supplied fully assembled on a suitable rigid

    frame. For double/triple pole isolators, the cross channels for mounting, shall also form part of supply and for type 1 A (SP) 24V, 40AH, battery& battery

    charger shall also part of supply. 1.3 The earthling switch (wherever provided) shall be of the manually operated

    type, complete with all parts, fittings and accessories including mounting attachment, operating rod/operating mechanism box etc. necessary for their

    efficient operation.

    2.0 Climatic, Environmental & operating condition 2.1 The isolator is intended to be used as outdoor line sectioning switches .the

    isolator shall be used in normally polluted atmosphere, subject to dust, smoke and effluents from chemical plants. It may also be used in coastal areas.

    2.2 Environmental Conditions

    S. No

    Parameters Value

    1. Maximum ambient air temperature

    550 C

    2. Minimum temperature of air in shade

    -5 0 C

  • DRAFT SPECIFICATION No. TI/SPC/PSI/ISOLTR/0130

    RESEARCH DESIGNS AND STANDARDS ORGANISATION

    Effective

    From 21.03.2013

    TECHNICAL SPECIFICATION for

    25kV/72.5KV/123KV/145KV/245KV ac Single Pole , Double Pole & Triple Pole

    Motorized/ Manual OPERATED ISOLATORS FOR RAILWAYS ac TRACTION SUB-STATIONS

    Page

    5 of 51

    3. Maximum relative humidity 100%

    4. Annual rainfall Ranging between

    1750 mm & 6250 mm

    5. Number of thunderstorm days per annum

    85 (Max)

    6. Number of dust storm days per annum

    35 (Max)

    7. Number of rainy days per annum 120 (Max)

    8. Maximum basic wind pressure 200 kgf/m2

    9. Altitude Not exceeding1000 m

    10. Pollution level Very Heavy as per IEC 815-1986 & IS 13134-1992

    2.3 The isolator shall be subjected to vibrations on account of trains running on

    nearby railway tracks. The amplitude of these vibrations, which occur with rapidly varying time periods in the range of 15 to 70 ms, lies in the range of

    30 to 150 microns with the instances peak going up to 350 microns. 3.0 List of related specifications

    3.1 The isolator and earthling switch shall, unless otherwise specified herein,

    conform to the latest version of the Indian Standards. Specifications/IEC recommendations/Research designs and Standards Organization (RDSO) specifications as indicated below and the Indian Electricity Rules, wherever

    applicable:

    S.No Standard no Description

    1. IS:1248 Electrical indicating instruments

    2. 1570(Pt.II) Carbon steels (unalloyed steels)

    3. IS:1651 Specification for stationary cell & batteries, leadacid type (with tubular +ve plates)

    4. IS:1652 Specification for stationary cells & batteries, .lead – acid type (with plante +ve plates)

    5. IS: 2071

    (pt. I & II)

    General definitions and test requirements and test

    procedures

    6. IS: 2108 Black heart malleable iron castings

    7. IS: 2419 Electrical indicating instruments

    8. IS: 2544 Porcelain post insulators for systems with nominal