ELECTRIC POINT MACHINE NON TRAILABLE TYPE PDF 2025

Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. SPECIFICATION FOR ELECTRIC POINT MACHINE...

Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. SPECIFICATION FOR ELECTRIC POINT MACHINE NON TRAILABLE TYPE IRS: S: 24-2025 Pages: 26 Research Designs & Standards Organization Lucknow – 226 011 Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 1 of 26  Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. DOCUMENT DATA SHEET Designation Amendment IRS:S: 24-2024 Title of Document SPECIFICATION FOR ELECTRIC POINT MACHIN NON TRAILABLE TYPE. Authors: Name : Shri Dipu Shyam Designation: Executive Director/ Signal-II / RDSO Approved by Name: Shri Suresh Kumar Designation: Principal Executive Director/ Signal & Telecom,RDSO Abstract This document defines specification for Electric Point Machine Non Trailable Type. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 2 of 26  Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. DOCUMENT CONTROL SHEET NAME ORGANIZATION FUNCTION LEVEL Shri Dipu Shyam Designation: Executive RDSO Member Prepare Director / Signal-II Shri Suresh Kumar RDSO Designation: Principal Approving Authority Approve Executive Director/ Signal & Telecom, RDSO Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 3 of 26  Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. AMENDMENTS Version Chapter/ Amendment Effective date Annexure IRS: S-24/63 - FIRST ISSUE 1963 IRS: S-24/90 - Revision 1 1990 IRS: S-24/2002 - Revision 2 2002 IRS: S-24/2002 - Amendment 1 2005 IRS: S-24/2024 - Revision 3 2024 Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 4 of 26  Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. Amendment 1 (Details) Sl. Clause Amendment status Remarks 1. 0.2 1 Modified To clarify the foreword 2. 11.2 1 Modified Test load of 450 kg made common for both EPM. 3. 11.4 1 Modified Test load of 580kg made common for both EPM 4. 11.6 1 Modified Table modified as per new parameters 5. 15.10.2 1 Modified Test load of 450 kg made common for both EPM. 6. 20.1 1 Modified Tools added for maintenance. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 5 of 26  Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. TABLE OF CONTENTS S. No. Item Page No. 0 Foreword 7 1 Scope 8 2 Terminology 8 3 Sequence of operation 9 4 Rated voltage 9 5 General requirements 9 6 Machine case 11 7 Motor 13 8 Crank handle operation 13 9 Terminals 14 10 Wiring 14 11 Operating Characteristic 15 12 Manufacturer 15 13 Marking & Identifications 15 14 Finish 16 15 Inspection and Testing 16 16 Rejection 21 17 Packing 21 18 Warranty 21 19 Installation and maintenance manual 21 20 Tools & Accessories 22 Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 6 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. GOVERNMENT OF INDIA MINISTRY OF RAILWAYS (RAILWAY BOARD) INDIAN RAILWAYS STANDARD SPECIFICATION FOR ELECTRIC POINT MACHINE NON TRAILABLE TYPE IRS: S 24-2025 0 FOREWORD 0.1 This specification is issued under the fixed serial no. S 24, the final number indicates the year of original adoption as standard, or in case of revision the year of last revision. 0.2 This specification requires reference to the following Indian Railway Standard (IRS) and Indian Standard (IS) Specifications: (i) IRS: S 23 Electrical Signalling and Interlocking Equipment. (ii) IRS: S 37 Motors for Electric Point Machine. (iii) IS: 7381 Hand operated square drive socket wrenches. (iv) IS : 7991 Attachments for hand operated square drive socket wrenches. (v) IS : 7975 Driving parts for hand operated square drive socket wrenches. (vi) IS : 2028 Open jaw wrenches (spanners) (vii) IS/IEC 60034-5: 2000 (Indian Standard of Rotating Electrical Machines) 0.3 Whenever reference to any of the above mentioned specifications appears in the specification, it shall be taken as a reference to the latest issue of that specification. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 7 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 0.4 This specification is intended chiefly to cover the technical provisions and the provisions relating to supply of the materials and does not include all the necessary provisions of a contract. 1 SCOPE 1.1 This specification covers the requirements of Electric Point Machines (Non-Trailable Type) with internal locking for operation of points in Railway yard with following Types: a. Electric Point Machine: 143 mm throw b. Electric Point Machine: 220 mm throw c. Electric Point Machine with IP 67 Protection: 143 mm throw d. Electric Point Machine with IP 67 Protection: 220 mm throw 1.2 Vendor has to specify the option while applying for registration. 1.3 All the Clauses mentioned applies to all Options of Electric Point Machine as mentioned in item no. 1.1 above. Clauses which are specific to Electric Point Machine OR Electric Point machine with IP67 protection have been mentioned separately. 2 TERMINOLOGY 2.1 The terminology used in this specification is covered by the definitions given in IRS: S 23. 2.2 The terms referred to in this specification but not covered in IRS: S 23, are defined below : 2.2.1 ‘Electric Point Machine’- It is an electrically driven machine used for operation of points in railway yards (not IP 67 Protected Machine). 2.2.2 ‘Electric Point Machine with IP67 protection’ - It is Water & Dust - proof electrically driven machine used for operation of points in railway yards which are prone for waterlogging. 2.2.3 „Throw-Bar’- That part of the point mechanism, which provides the thrust for operation of points and to which the points driving rod is connected. 2.2.4 „Lock Slide’-That part of the point machine which has suitable notches in it for locking segment to effect locking of the points. 2.2.5 ‘Detector’- A device to prove the correct setting of points or correct setting and locking of points. 2.2.6 „Detector Slide’- That part of the point machine which controls the detector contactsand to which the detector rod is connected. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 8 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 2.2.7 „Time of Operation’- The time required for one complete sequence of operation as specified in clause 3.1. 2.2.8 „Right-hand Mounting’- A point machine which is fixed to the right of the track as seen while facing the points. 2.2.9 ‘Left-hand Mounting’- A point machine which is fixed to the left of the track as seen while facing the points. 2.2.10 „Stalling Load’- The load applied to the throw-bar which, when the clutch of the point machine is deliberately prevented from slipping, would just prevent the driving movement of the machine. 2.2.11 „Crank Handle’- An appliance by which electrically driven point machines may be manually operated at the site. 2.2.12 ‘Slipping Load’ – The load on throw-bar at which friction clutch of the point machine is adjusted in the factory to slip. 2.2.13 ‘Slipping Current’ - The current corresponding to “slipping load” at which friction clutch of the point machine is adjusted to slip. 3 SEQUENCE OF OPERATIONS 3.1 The machine shall operate in the following sequence: - a) Open the detection contacts b) Unlock the points c) Move the points d) Lock the points e) Close the detection contacts. 3.2 Operation (c) shall be completed to the full normal or full reverse position of the points, and operation (d) shall be completed before closing of detection contacts for respective position can take place. Unlocking of point shall start only after opening of detection contacts. 4 RATED VOLTAGE 4.1 The rated voltage of the machine shall be 110V DC. 5 GENERAL REQUIRIEMENTS 5.1 The machine shall be of robust construction, securely fixed and protected from unauthorized interference. 5.2 The water and dust shall not ingress into Electric Point Machine with IP 67 Protection and it shall be capable of functioning normally (including Crank handle operation) even after remaining in submerged condition. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 9 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 5.3 The machine shall be so designed that it can be stopped, reversed or obstructed at any point during operation without any damage. 5.4 The machine shall be so constructed that no movement of the mechanism shall result from vibration or external force applied to the mechanical connection. 5.5 The machine shall be suitable for either right-hand or left-hand mounting, and shall be so constructed that it can readily be converted at site from right-hand to left-hand mounting and vice-versa. 5.6 The motor cut-off contacts shall be housed in the mechanism case and so designed that they follow the movement of the mechanism and do not complete their operation until the locking mechanism has completed its function. 5.7 The locking of the points shall be achieved by means of a locking segment engaging in the locking slot of the lock slide. 5.8 The locking segment and the notch in the lock slide shall be of substantial size and shall have a substantial bearing surface between them in the locked position. 5.9 The entrance edges of the locking slot in the lock slide and the end face of the locking segments shall have square edges. Notches shall be cut to correct size and locking segments shall be made of hardened steel. 5.10 For Electric Point Machine with IP 67 Protection, necessary sealing arrangements is to be provided for detector slides, lock slides, drive rod, Cable Entry Points, Machine Fixing Holes, Drainage hole, Crank handle arrangement holes and Machine cover to prevent water or dust ingress in the machine. 5.11 The detector unit shall have sufficient number of contacts for proving the full normal and reverse positions of the detector slides and the corresponding locked position of the lock slide. It shall also prove the complete operation of the point machine and the complete movement of locking process. 5.12 Detection and motor cut-off contacts shall be housed in a transparent cover made of UV stabilized polycarbonate material. The sealing arrangement should be provided on the transparent cover and it should be dust proof and water proof. The position of the detection and motor cut off contacts shall be such as to avoid dropping of grease, oil during maintenance work. 5.13 Electrical contacts shall be of low resistance, quick acting, self-aligning and wiping type and shall conform to IRS: S 23. In addition to above, For Electric Point Machine with IP 67 Protection, contacts should be properly insulated by epoxy or water-resistant material till silver contact. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 10 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 5.14 Provision shall be made for proper and convenient lubrication of the moving parts of the machine, wherever necessary. 5.15 Exposed oil holes, cups and grease nipples shall be provided with weather-proof spring loaded covers. In addition to above, for Electric Point Machine with IP 67 Protection, Necessary sealing shall be provided for lubrication/ grease nipples to prevent water or dust ingress in the machine. 5.16 The design shall be such as to minimize condensation in the machine. 5.17 Clearance of not less than 12 mm shall be provided between any exposed current carrying parts and other metallic parts insulated therefrom. 5.18 With the exception of motor commutator, a surface leakage distance of not less than 6 mm shall be provided between any exposed current carrying parts and othermetallic parts insulated therefrom. 5.19 The insulating materials used shall conform to IRS: S 23 and shall not be injuriously affected by atmospheric conditions. 5.20 Dimensions of fixing arrangement of point machine shall be as per drawing No. RDSO / S 10800 for 143 mm stroke and RDSO / S 11000 for 220 mm stroke IRS point machine. 5.21 Following aspects shall be ensured in the design of Electric Point Machine with IP 67 Protection to achieve the compatibility with Electric Point machine. It should be able to replace Electric Point Machine by Electric Point Machine with IP 67 Protection (or vice-verse) by ensuring the followings. a) Existing Position and design of ground connection shall remain unchanged. b) Existing Position and design of P-Bracket shall remain unchanged. c) Position of Holes on P-Bracket for connecting ground connection shall remain unchanged. d) Existing Position and design of Clamp lock assembly and throw Rod of Machine shall remain unchanged. e) Existing Position and size of Machine fixing holes shall remain unchanged. f) Existing Point installation Layout drawing RDSO/S 3454 ALT-B (OR Latest) for Thick Web Switch (220 mm) and Layout drawing RDSO/S 3262-63 (OR Latest) for Overriding Switch (143 mm) shall remain applicable. 6 MACHINE CASE 6.1 a) For Electric Point Machine, the machine shall be enclosed in a strong metallic weather-proof machine case, designed for mounting on two sleepers. Each machine case shall be provided with removable cover/covers. The main cover/covers shall be equipped with suitable fastenings to enable the covers to be secured and locked. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 11 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. Suitable hole or holes with removable metal plugs shall be provided, at the base or the machine case, for drainingoff of the accumulated oil or water. b) For Electric Point Machine with IP 67 Protection, the machine shall be enclosed in a strong metallic weather and machine case with IP 67 Protection, designed for mounting on two sleepers. Each machine case shall be provided with removable cover/covers. The main cover/covers shall be equipped with suitable pressure mechanism fastenings to enable the covers to be secured and locked and to prevent water and dust ingress. Suitable Drain holes with removable sealing plugs for draining off the accumulated oil or water shall be provided to prevent ingress of water and dust. All the holes at base for fixing shall be protected against water and dust ingress. Machine case shall be so designed to accommodate all the rods (detector, Lock and Throw) with necessary sealing arrangements/gaskets to prevent ingress of Water and dust. Sealing Material to be used shall be as following: S. Location Sealing material to be used No. 1. Base mounting holes Viton or Silicon 2.. Drain plug Silicon or NBR (Nitrile Butadine Rubber) 3. Throw Rod arrangement NBR (Nitrile Butadine Rubber) 4. Lock Rod arrangement (LH/RH) NBR (Nitrile Butadine Rubber) 5. Detector Rod arrangement NBR (Nitrile Butadine Rubber) (LH/RH) 5. Grease nipple Viton/Silicone 6. Cable entry point. Cable gland for IP67 Protection 7. Crank handle arrangement Silicone/NBR (Nitrile Butadine Rubber) 8. Point Machine cover Silicone or EPDM (Ethylene propylene diene monomer) (Table No-1) Note: (i) Better sealing material (if any) can be used in place of material mentioned above. (ii) Condition of sealing material shall be checked before each Monsoon and replaced, if required. (iii) Sealing arrangement should be so sturdy so that it shall not get affected by Maintenance activities like opening of cover, replacement of ground connection, replacement of P-Bracket, replacement of Clamp lock assembly, replacement of Cable and maintenance in Crank Handle assembly etc. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 12 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 6.2 The machine case shall be provided with cable entries of ample size, conveniently located for access to terminals, equipped with suitable means for connecting flexible conduit and arranged to protect the cable from mechanical injury. The cable entries shall be suitable for either right-hand or left-hand mounting of the machine, and shall be so designed that the machine case will be weather-proof. In addition to above, cable gland shall be provided at cable entry holes of Electric Point Machine with IP 67 Protection to ensure protection against dust and water. Manufacturer shall supply cable gland for IP67 Protection as per the size of cable being used by Zonal Railways. 6.3 Electric Point Machine case shall be provided with an opening, for application of crank handle protected by an external metal weather-proof cover equipped with suitable fastenings for locking. 6.4 The design of Electric Point Machine with IP 67 Protection shall allow operation of crank handle with existing key and existing crank handle in submerged condition. Suitable sealing arrangement shall be provided to prevent ingress of dust and water. Crank handle arrangement of Electric Point Machine with IP 67 Protection shall be protected by an external weather and water proof cover for IP67 protection equipped with suitable fastenings for locking. 6.5 Electric Point Machine shall be so designed that it is capable of being mounted at a raised level on extended sleepers in flood prone areas. 6.6 The Dimensions of the machine shall be such that there is no infringement with the schedule of dimensions of Indian Railways when the machine is mounted on two sleepers. 7 MOTOR 7.1 Motor shall comply with the requirements of IRS: S 37-2022, Version 2.0 (Or latest) „Motor for Electric Point Machine‟. In addition to above, IP 67 motor as per IRS: S 37-2022, Version 2.0 (Or latest) should be used with Electric Point Machine with IP 67 Protection. 7.2 Motor shall form an integral part of the machine and shall be removable therefrom. 7.3 Motor terminal blocks shall be made of unbreakable material like PBT. 8 CRANK HANDLE OPERATION 8.1 The machine shall be so designed as to permit manual operation by use of a crank handle. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 13 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 8.2 The machine shall be provided with a crank handle cutout contact such that the crank handle cannot be inserted in the machine without isolating the motor circuit. This circuit shall not be capable of being reconnected until the crank handle has been withdrawn from the machine. 8.3 The crank handles shall be provided with different ward combinations with matching sockets on the machine, so that the crank handle having a particular ward combination can only operate point machines having matching sockets. Instead of crank handle, a key may also be provided with different ward combinations with matching sockets on the machine so that insertion of key of the particular ward only is possible in the point machine socket which will enable a common crank handle to be inserted in the machine. 8.3.1 Crank handle/key sockets on the machine shall be provided with detachable arrangements so that when the machine is taken out for maintenance purposes, the same crank handle/key ward can be used in the new machine, thus enabling the use of the same crank handle/key ward combination for that point. 9 TERMINALS 9.1 Terminals shall be M6 of nut type or as specified by the purchaser and shall conform to IRS: S 23. 9.2 Terminals shall be spaced not less than 20 mm and so located as to be easily accessible. 9.3 Terminals for external connections shall, as far as practicable, be located near the cable entry. Terminals of cable entry shall be of standard type. 9.4 Terminal shall be marked for identification purposes in accordance with the diagram of connections. 10. WIRING 10.1 Internal wiring shall be neatly arranged and shall conform to IRS: S 23. Color code and numbering of internal wiring shall be as per Figure 1. 10.2 The conductors for the internal wiring shall be insulated and shall be of tinned copper, stranded, having a cross-sectional area of not less than 2 sq. mm and not less than 3 strands. Both ends of each conductor shall be labeled and provided with an eyelet of a suitable type. These eyelets shall be crimped and soldered. 10.3 Where wire connections are provided at a common terminal, the same shall be capable of being disconnected readily for test purposes. 10.4 Wiring diagram with explanation, if any, in English, engraved on an anodized metallic sheet, shall be securely attached to the inner face of the cover of the machine and protected from the effects of lubricants and moisture. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 14 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 11. OPERATING CHARACTERISTICS 11.1 The machine shall comply with the appropriate operating data given in clause 11.6of this specification. 11.2 The machine shall be capable of operating between the limits of 75 percent and 125 percent of the rated voltage at 450 kg. test load. 11.3 The machine in locked position, shall be capable of withstanding a thrust of 9000 Kg. through the connections, so that in the event of trail through, the damage is confined to the connections between the machine and points. 11.4 The friction clutch of the machine shall be factory adjusted to slip at not exceeding 580 kg. load on throw bar. The clutch adjustment shall be sealed in the factory. The slipping load and slipping current shall be indicated on the name plate. 11.5 The point machine shall have a min. AC immunity level of 160 V or 400V (r. m. s.), 50 Hz. 11.6 Operating Data Throw Time of Current Current Test Test Slippin Stalling of point operation consumption consumption voltage load on gload load of EPM of EPM (DC) machine (Max.) throw (Min.) with IP 67 bar Protection 143 mm 4.0 sec.  4.5 Amp  5.5 Amp 110 V 450 Kg.  580 kg 1000 kg. ±2 220 mm 5.5 sec.  5.5 Amp  6.5 Amp 110 V 450 Kg.  580 kg 1000 kg. +4/-1 (Table No-2) 12 MANUFACTURE 12.1 The manufacturer shall ensure that in addition to all the provisions of this specification, the requirements of any drawings, and / or specifications referred to by the purchaser are fully complied with. 12.2 Workmanship, limits and fits, interchangeability and other general requirements shall be in accordance with IRS:S 23 wherever applicable. 13 MARKING & IDENTIFICATION 13.1 Marking and identification shall be done in accordance with IRS: S 23. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 15 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 13.2 The nameplate of the electric point machine shall have the following details, engraved on a metallic plate, affixed at a convenient place on the internal as well as external portion of the point machine. 1 Designed by RDSO 2 Manufacturer‟s name or trade mark 3 Type of Electric Point Machine 4 Serial No. 5 Year of manufacture 6 Rated Voltage (110V, DC) 7 Throw 8 Slipping Current 9 Slipping Load 14. FINISH 14.1 The finish of various parts of the machine shall conform to IRS: S 23. 14.2 Suitable protective coating shall be provided on detector contacts, crank handle contacts and motor. 14.3 The external portion of electric point machine shall be painted with anti-corrosive Black paint. The Cover of Electric Point machine with IP 67 Protection shall be galvanized/Stainless Steel. Base of the Electric Point machine with IP 67 Protection shall be galvanized (Cl. 13 of IRS S10) or painted with anti-corrosive Water-proof paint for water resistance. 15. INSPECTION & TESTING 15. 1 Inspection and tests shall be carried out to ensure that all the requirements of this specification and that of IRS: S 23 are complied with. 15.2 Type Test The following shall constitute type test and shall be conducted in the sequence givenbelow: - (a) Visual check (clause 15.12.1) (b) Operating voltage test (clause 11.2) (c) Applied high voltage test (clause 15.5) (d) Insulation resistance test (clause 15.6) (e) AC immunity test (clause 11.5) (f) Obstruction test (clause 15.11) Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 16 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. (g) Performance test (clause 15.7) (h) Life test (clause 15.10) (i) Dimensional check – Size of notches of lock and detector slides. (j) Dust Ingress Test for Electric Point Machine with IP67 protection: - This test shall be performed as per IS/IEC 60034-5: 2000, before water immersion test. Ingress of dust shall be totally prevented. The protection is satisfactory if there is no ingress of dust. (k) Water Immersion Test for Electric Point Machine with IP67 protection: - This test shall be performed as per IS/IEC 60034-5: 2000 to comply IP-67 protection. The lowest portion of the Machine shall be at least 1 m below the surface of the water. (i) Stage 1 Test - inside water: Machine should be operated for 20000 operations with 4 operations per minute inside the water for 96 hours. These number of operations shall be counted as part of Life test as per cl 15.10 of this specification. After above test, 10 operations of crank handle on both the directions should be done in fully submerged condition of point machine (water level may be reduced to practically operational level). There should not be water ingress and any deterioration in sealing material after the test. During this test, the machine should qualify the requirement as per clauses 2.2.2, 5.2, 5.10, 5.15, 6.2, 6.4 & 15.6 of this specification. (ii) Stage 2 Test - outside water: Machine should be operated for 60000 operations with 4 operations per minute outside water as per cl. 15.10 of this specification. There should not be any deterioration in sealing material after the test. (iii) Stage 3 Test - inside water: Machine should be operated again for 20000 operations with 4 operations per minute inside the water for 96 hours. These number of operations shall be counted as part of Life test as per cl 15.10 of this specification. After above test, 10 operations of crank handle on both the directions should be done in fully submerged condition of point machine (water level may be reduced to practically operational level). There should not be water ingress and any deterioration in sealing material after the test. During this test, the machine should qualify the requirement as per clauses 2.2.2, 5.2, 5.10, 5.15, 6.2, 6.4 & 15.6 of this specification. After above three stages of tests, sealing material should be replaced by Firm, if required and Machine shall continue to be tested for life test as per cl. 15.10. Condition of sealing material should be checked for every 100,000 operations thereafter and replaced by Firm, if required. After every 20,000 operations, maintenance and lubrication of the point machine shall be carried out in entire Life test as per cl. 15.10 of this specification. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 17 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 15.2.1 Only one point machine shall be tested for this purpose. The point machine shall pass all the type tests for proving conformity with this specification. If the point machine fails in any of the tests, the inspecting authority, at his discretion, may call for another point machine of the same type and rating and subject the same to all the type tests. No failure shall be permitted in the repeat test. 15.3 Acceptance Test: The following test constitutes the acceptance test and shall be conducted in thesequence given below: - (a) Visual check (clause 15.12.2) (b) Operating voltage test (clause 11.2) (c) Applied high voltage test (clause 15.5) (d) Insulation resistance test (clause 15.6) (e) AC immunity test (clause 11.5) (f) Performance test * (clause 15.7) (g) Dimensional check – Size of notches of lock and detector slides. (h) Water Immersion Test for Electric Point Machine with IP67 protection: - This test shall be performed as per IS/IEC 60034-5: 2000 to comply IP-67 protection. The lowest portion of the Machine shall be at least 1 m below the surface of the water. Machine should be operated for 5000 operations with 4 operations per minute inside the water for 24 hours. After above test, 5 operations of crank handle on both the directions should be done in fully submerged condition of point machine (water level may be reduced to practically operational level). There should not be water ingress and any deterioration in sealing material after the test. During this test, the machine should qualify the requirement as per clauses 2.2.2, 5.2, 5.10, 5.15, 6.2, 6.4 & 15.6 of this specification. Note: * Stalling load test shall be conducted on only one sampled point machine of alot. 15.3.1 The samples for acceptance test shall be selected as below. SAMPLING PLAN a) Lot : All the point machines of the same type manufactured by the same factory during the same period shall constitute a lot. b) Sample Size: The number of point machines selected at random for acceptance test shall constitute sample size. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 18 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. c) The lot size and sample size shall be as per the following table: S. No. Lot Size Sample Size 1 1-4 50 % (min 1) 2. 5-20 25 % (min 2) 3. 21-50 20 % (min 5) 4. 51-100 16 % (min 10) (Table No-3) Note: ( 1 ) If a lot consists of more than 100 point machines, the lot shall be divided into smaller lots consisting of the above lot sizes. (2) Sample Size for cl. 15.3 (h) of this specification for Electric Point Machine with IP67 protection shall be only one for each lot. 15.3.2 For acceptance of the lot, no sample shall fail in the acceptance test. 15.4 Routine Test: The following shall constitute routine test and it shall be conducted by the manufacturer on every point machine offered and the test result shall be submitted tothe inspecting authority during inspection. (a) Insulation resistance test (clause 15.6) (b) Performance test (clause 15.7) (c) AC immunity test (clause 11.5) 15.5 Applied High Voltage Test: 15.5.1 The insulation of an assembled point machine after snubbing diode, if any, is disconnected, shall withstand for one minute test voltage of 2000 V r. m. s. between all parts of electric circuits and other metallic parts insulated therefrom. 15.6 Insulation Resistance Test: 15.6.1 This test shall be made immediately after the applied high voltage test specified in clause 15.5, at a potential of not less than 500 V DC. 15.6.2 The insulation resistance shall be measured between individual insulated circuits and earth. The minimum value for each individual insulated circuit shall be not less than 10 Meg. Ohms. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 19 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 15.7 Performance test: Test shall be conducted to verify the following: (i) Operating characteristics (clause 11.6) (ii) Contact resistance (clause 15.8) (iii) Contact pressure (clause 15.9) These tests shall be conducted on a layout approved by the purchaser or his nominee. 15.8 Contact Resistance Test: The initial contact resistance of electrical contacts shall not exceed 0.03 ohm. The resistance shall be measured when the contact is carrying a direct current of 100 mA.At the end of the life test, the contact resistance shall not exceed 0.06 ohm. 15.9 Contact Pressure Test: The initial contact pressure of electrical contacts in closed position when measured very near the point of contact shall not be less than 275 gm. At the end of the life test, the loss in contact pressure shall not exceed 10 percent of the initial contact pressure. 15.10 Life Test: 15.10.1 The point machine shall be installed on an approved layout and it shall be operated continuously for one million operations at the rate of 4 operations per minute. After every 20,000 operations, maintenance and lubrication of the point machine shall be carried out. In addition to above, for Electric Point Machine with IP67 protection, Cl. 15.2 (k) of this specification should also be followed. 15.10.2 No damage to the point machine shall occur at the end of the test, and it shall becapable of hauling 450 kg test load on throw bar. 15.11 Obstruction Test: The point machine shall be tested for obstruction test as per Para 12.4.4 of SEM (2021 issue). With the test piece in, 1) the point machine shall not be able to complete its full operation. 2) the locking of the points shall not be effective. 3) the detection contacts shall not make. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 20 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 15.12 Visual Check 15.12.1 Visual Check for Type Test : The visual checks shall be carried out as laid down in IRS: S23. In addition, the detailed dimensional check and surface finish of all the parts, in reference to the drawings approved by the purchaser, shall be conducted. For such check the manufacturer shall submit three sets of the drawings of all the parts including their assembly drawings. 15.12.2 Visual check for Acceptance Test: The visual checks shall be carried out as laid down in IRS:S23. In addition, the detailed dimensional check and surface finish of some important parts, such as lock and detector slide, rack & pinion, detection contacts etc. as considered necessary by inspecting official, shall be conducted. It shall be ensured that material of all components of the point machine is as per approved drawings. Chemical test report and relevant documents in support of it shall be verified by the Inspecting officer and recorded in Acceptance Test Report. 16. REJECTION 16.1 The machine or any part thereof that does not comply with any of the requirements of this specification and / or of any other specification and / or of drawings as approved by the purchaser may be rejected. 17. PACKING 17.1 The packing shall be done in accordance with IRS: S 23. Each electric point machine shall be packed in a suitable wooden crate to protect it from any damageduring transit etc. 18. WARRANTY 18.1 The warranty of the Electric point machine shall be in accordance with the IRS specification No. IRS: S 23. 18.2 Warranty of the Electric Point Machine with IP 67 Protection shall be as per cl. 18 of IRS specification No. IRS: S 23. In addition to above, the warranty of all sealing materials shall be 36 months from the date of supply. 19. INSTALLATION AND MAINTENANCE MANUAL 19.1 A copy of installation and maintenance manual shall be supplied along with eachpoint machine. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 21 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 19.2 The manual shall include the following information: 1) General information about the point machine such as overall dimensions and weight of point machine, stroke of throw bar, and dimensions of fixing centers of throw bar, lock rods and detector rods, etc. 2) Installation procedure. 3) Testing and adjustment procedure for friction clutch, detector slide etc. 4) Maintenance and lubrication procedures and their periodicity. Grade of oil and grease to be used. 5) Procedure for replacement of parts and periodicity of routine replacement of parts. 6) Tools required. 20. TOOLS & ACCESSORIES: 20.1 The following set of tools in a suitable tool box shall be supplied along with everyset of eight point machines or less. i). Hand operated square drive socket wrenches of 12.5 mm driving square (short type) as per IS: 7381 for M8, M10, M12 & M18 threads. (One 250 mm long 12.5 mm square extension bar as per IS: 7991 along with compatible Tee handle Square drive as per IS: 7975 suitable for above socket wrenches shall also be provided. ii) Open jaw wrenches (spanners) for M10, M12, M20, M24 & M33 threads as per IS: 2028. iii) Adjustable Wrench. iv) Screw driver 300 mm long. v) Additional Tools required for Electric Point machine with IP67 protection for maintenance may be added as per requirement. 20.2 Junction box and two numbers of telescopic pipes of approved type shall be suppliedas an integral part of the point machine. 20.3 Ground connections and clamp lock shall be supplied along with the point machine on requirement from the purchaser as per latest drawing given below or as per their requirement- i) RDSO / S 3361 – 62 (60 kg., 52 kg. on PSC sleepers) ii) RDSO / S 3262 – 63 (52 kg., 90 R on wooden sleepers) iii) RDSO / S 3454 (60 kg. TWS with clamp point lock) iv) RDSO / S 3495 (60 kg. swing nose crossing with clamp point lock) Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 22 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. Annexure-1 Electric Point Machine drawings SN Drg. No 143mm Description Remark if any 1. S10800 Electric Point Machine 143mm 2.. S10801 *BASE 7. S10803 *Drive Rod 8. S10804 *Lock Rod Bracket RH 9. S10805 *Lock Rod Bracket LH RDSO S10806- *Lock Rod RH/LH 07(Alt-8) 10. S10808-09-09A-09B *Drive rod Cover plate/Lock rod cover Plate/Drive rod Rubber Gasket/Lock rod Rubber Gasket 11. S10810-11 *Detector rod LH/RH 12. S10812-13-14 *Detector Rod Bracket/Detector rod cover plate/ Detector rod rubber gasket 13. S10815-16 Main Gear ring/Segmental ring 14. S10817-18-18A-19 Segmental ring Assembly (Ring/Feredo Lining/Metal Piece/Metallic liner) 15. S10820 Segmental ring Assembly Ring/Feredo Lining/ Metal Piece /Metallic Liner) 16 S10821-22-23-24 Segmental ring Assembly(Locking plate-L/ Locking plate-R/Clamp/ RH Helical Spring) 17. S10825-26-27-28 Segmental ring Assembly (Collared Bush /Hex. Bolt /Pin for Bush /Spring Holder) 18. S10830-32 Segmental ring Assembly(Split Pin SPL)/ Main gear stopper 19. S10833-34 Main Gear Cover Top/ Bottom 20. S10835 * Main Gear assembly 21. S10836-37 Main Gear assembly(main Gear)/Gear Train (Driving Pinion) 22. S10838-39-40 Main Gear (Locking Pawl/ Washer/ cover top bush) 23. S10841-42-43-44 *Main Gear (Shaft/Rack Pinion /Lock Washer-A /Lock Washer-B) 24. S10845-46-47 Main Gear ( Bracket/Bush /Toggle Pin) 25. S10848A-48B Side cover complete for drive rod & Lock rod / Detector rod Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 23 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 26. S10848A-48B-48C- *Slide cover complete Flap/Pin 48D 27. S10849A-49B *Slide cover for drive rod & Lock rod/ Detector rod 28. S10850 Gear Box 29. S10851 Gear Box-(Base) 30. S10852 Gear Box-(Bracket) 31. S10853-54-55-56 Gear Box-(Shaft /Motor Pinion / Driving Gear /Intermediate Gear) 32. S10857-58-59-60 Gear Box-(Top Plate /Insulating sheet /Oil tube /Plug) 33. S10861-62-63-64 Gear Box-(Dowel Pin /Gasket /Pin /Bush) 34. S10865 *Cover assembly 35. S10866 *Cover assembly (Cover) 36. S10867-68 Intermediate Gear Bush /Gear Box Bracket- Bush 37. S10869 Gear Box Bracket 38. S10870 Gear Train 39. S10871-72-73-74 *Crank Handle Hole Lock(Base /Lid /Pin /Rubber Gasket) 40. S10875-76-77-78 *Key Hole Lock – Lid (cover) 41. S10880 *Key Box Assembly 42. S10881-82 Key Box Assembly (Base plate complete/Base Plate) 43. S10883-84-85-86 Base Plate complete(Spring Holder/lock lever spring/Lock lever/guide roller) 44. S10887-88-89-90 Sliding plate complete- guide pin/key box assembly(Lid for crank handle/Washer special/washer) 45. S10891-92-93-94 Base plate complete(Threaded stud- A/B/Guide pin for key/Stud for lock lever) 46. S10895-96-97-98 Key Box assembly- sliding plate complete/ sliding plate/ filler block/ contact strip 47. S10899-900-01-02 Key box assembly –supply cut off unit/ supply cut off unit(insulating plate/contact holder/contact spring) 48. S10903-04-05-06 Key Box assembly-Cover complete/(Cover/Key Plate „A‟/‟B‟) 49. S10907-7A-7B-7C Supply cut off unit-Insulating Bush/Key Box-Key/Cover-Key/Main gear assembly -Lid 50. S10908-09 *Cover assembly-Crank handle hole Lock/Key Hole lock 51. S10910 DC Point Motor 52. S10911 Contractor Unit assembly 53. S10912 Contractor Unit assembly-Base 54. S10913-14-15-15A Contractor Unit assembly-Contact Block/ Contact strip/Cover support Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 24 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. LH&RH 55. S10916-17-18-19 Contractor Unit assembly-(Pin/Square head Bush/-Spring/Threaded Bush) 56. S10920 Contractor Unit assembly-Transparent cover 57. S10921-22-23 Contactor unit assembly-(Holding pin assembly/Holding Pin/Pin for Nipple) 58. S10924A-24B Contact Unit Assembly- (Gasket/Stiffner) 59. S10925-26 Contactor unit assembly-Bracket assembly 60. S10927 Bracket assembly LH&RH contact assembly A 61. S10928 Bracket assembly LH&RH contact assemblyB 62. S10929-30 Bracket assembly LH (Bracket „A‟/ Bracket „B‟) 63. S10931-32 Bracket assembly RH (Bracket „A‟/ Bracket „B‟) 64. S10933-34-35-36 Bracket assembly LH&RH(Roller B/Roller A) 65. S10937-38-39-40 Bracket assembly LH&RH(Solid Pin) 66. S10941-42-43-44 Contactor unit assembly(Screw/Rivot) 67. S10945-46-47-48 Contactor assembly (Keeper B/Keeper A) 68. S10949-50-51-52 Contactor assembly „A;& „B‟(Block alt-2 for keeper/Washer A) 69. S10953-54-55-55A Contactor assembly „A;& „B‟(Lock alt-2 Washer/Insulating Bush/Silver contact/Oil Felt) 70. S10956 Oil felt arrangement 71. S10957-58-59-60 Key Hole Lock Lid support/Cover assembly Locking Pieace/Crank handle Hole Lock-Locking cam/Key 72. S10961-62-63-64 Cover Locking hook assembly 73. S10965-66-67- 68 Stopper/stopper Gasket/Cable hole rubber gasket 74. S10969-70-71 Pin/ Cover Latch Pin 75. S10973A-E-74-75 Crank handle 76. S10976-77-78-79 Crank handle –(wooden grip/Spindle/Roller Bush/Arm) 77. S10980A-E-81 *Cover Crank Handle Guide Plate/Washer 78. S3264-65-66 Model Layout Facing Point BG-Switch Extension Bracket/Insulation Plate R.H./Insulation Plate LH 79. S3271-74 Layout Facing Point BG-(Lock Rod for end/Lock rod ear end) EPM 220 mm 1. S11000 High Thrust Rotary Locking Type Point Machine 220mm Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 25 of 26 Document No. IRS: S: 24-2025 Revision-3.0 Date Effective: 08.01.2025 Document Title : ELECTRIC POINT MACHINE NON TRAILABLE TYPE. 2. S11001 *Base 3. S11003 *Drive rod 4. S11004 *Bracket RH 5. S11005 *Bracket LH 6. S11006-07 *Lock rod RH/LH 7. S11008 *Cover assembly 8. S11009 *Cover assembly-Cover (220mm Stroke) 9. S11010-11 *Detector rod LH/RH 10. S11012-13-14 *Main gear rack pinion/Drive rod cover plate/Rubber Gasket 11. S11015 *Slide cover complete (RH) 12. S11016 *Slide cover complete (LH) 13. S11017 *Slide cover (RH) 14. S11018 *Slide cover (LH) Clamp Lock 1. S 3396 Stock rail Bracket 2. S 3397 Tongue Rail Bracket 3. S 3398 Lock arm assembly RH 4. S 3399 Lock arm assembly LH 5. S 3400 Lock arm assembly 6. S 3401 Lock Arm 7. S 3402-03 Locking Bar assembly-Lock slide RH/ Lock slide LH 8. S 3405 Pin 9. S 3406 Lock arm assembly Bronze Bush 10. S 3436A-36B-37A- Layout 60KG (TWS) IRS Pt Machine 37B Detector Rod Long/Detector rod Short. 11. S 3454 Lay out 1 in 12 turnout BG 12. S 3456-57-58-59 Layout 60KG (TWS) IRS Pt Machine Lock Rod Short/Lock rod long 13. S 3460-61-62-63 Layout BG (TWS) IRS Point Machine(Drive rod/Drive rod Lug/Lock Bar assembly/Bush)) 14. SA-23756 Terminal Box 6 -way 15. S 3520 1 in 12 Layout at RDSO intranet 16. S 8912 Bush -B Note: Only Minor modification may be done, if required, in drawings marked with * in order to comply the functionality of Electric Point Machine with IP67 protection and specification clauses. Manufacturer shall submit their tentative drawing to RDSO for approval during manufacture of Prototype sample. Prepared By: Issued By: JRE/S&T Exe. Director / Signal-II / RDSO Page 26 of 26