RDSO/SPN/199/2010 Rev. 1.1 LED Signal Lamps PDF

Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING lR;eso t;rs TECHNICAL SPECIFICATION FOR LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS (INTEGRATED) FOR...

Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING lR;eso t;rs TECHNICAL SPECIFICATION FOR LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS (INTEGRATED) FOR RAILWAY SIGNALLING SPECIFICATION NO. RDSO/SPN/199/2010 Revision: 1.1 Number of pages: 19 SIGNAL DIRECTORATE RESEARCH DESIGNS & STANDARDS ORGANISATION LUCKNOW-226011 Page 1 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING DOCUMENT DATA SHEET Designation Revision 1.1 RDSO/SPN/199/2010 Title of Document Technical Specification for LED Signal Lamps for Main Colour Light Signals (Integrated) for Railway Signalling. Authors Name: Rajneesh kumar Designation: Director/Signal/RDSO Approved by Name: Shri Mahesh Mangal Designation: Sr. Executive Director/Signal/RDSO Abstract This document specifies technical specification and inspection criteria for LED Signal Lamps for Main Colour Light Signals (Integrated) for Railway Signalling. Page 2 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING DOCUMENT CONTROL SHEET NAME ORGANISATION FUNCTION LEVEL Rajneesh Kumar RDSO Member Prepare Mahesh Mangal RDSO - Approve REVISION/AMENDMENTS Version Amendment Issue date RDSO/SPN/199/2010 (Draft) RDSO/SPN/199/2010 Rev. 1.0 Revision 1.0 11.4.2014 RDSO/SPN/199/2010 Rev. 1.1 Revision 1.1 15.4.2019 Page 3 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING TABLE OF CONTENTS Sl. No. Item Page No. 0 Foreword 5 1.0 Scope 5 2.0 Abbreviations Used 5 3.0 Terminology 6 4.0 General Requirements 7 5.0 Technical Requirements 7 6.0 Design Criteria 7 7.0 Design criteria for high speed line 10 8.0 Tests & Performance Criteria 11 9.0 Inspection Criteria 12 10.0 Information To Be Given By Purchaser 14 11.0 Scope Of Supply 14 12.0 Warrantee 14 13.0 Marking 15 14.0 Documentation 15 15.0 Packing 16 16.0 Infringement of Patent Rights 16 17.0 ISO Procedures 16 Page 4 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING Technical Specification for LED Signal Lamps for Main Colour Light Signals (Integrated) for Railway Signalling 0. FOREWORD 0.1 This specification is issued under the fixed serial number (Specn. No. will be give at the time of issue). 0.2 This specification requires reference to the following Indian Railway Standards / British Standards / International Standards specifications: i) RDSO / SPN / 144 / 2006: Safety and reliability requirement of electronic signalling equipment ii) STS/E/Relays/AC Lit LED Signal/09-2002: Tentative specification for universal plug-in type, tractive armature AC lamp proving relay (metal to carbon) for 110V AC LED signal lamp iii) IRS:S23: Indian Railway Standard specification for electrical and electronic based signalling and interlocking equipment iv) BS 1376:1974: Specification for colours of light signals v) CENELEC Standard EN 50126: Railway applications – The specification and demonstration of Reliability, Availability, Maintainability and Safety (RAMS) vi) CENELEC Standard EN 50129: Railway applications – Communication, signalling and processing systems – Safety related electronic systems for signalling vii) IEC 127: International Standard for miniature fuses 0.3 Wherever in this specification any of the above mentioned specification is referred to by number only without mentioning the year of issue, the latest issue of the specification is implied, otherwise the particular issue referred to is meant. 0.4 This specification is intended to cover the technical provisions and it does not include all the necessary provisions of a contract. 1.0 SCOPE 1.1 This specification covers the general and technical requirements of LED signal lamps for main colour light signals (Integrated) for railway signalling application in RE & Non-RE areas of Indian Railways. This specification also covers the general and technical requirements of LED signal lamps for main colour light signals for high speed lines. 2.0 ABBREVIATIONS USED RDSO: Research Designs & Standards Organisation Page 5 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING CENELEC: European Committee for Electrotechnical Standardisation IEC: International Electrotechnical Commission BS: British Standards RE: Railway Electrification ASM: Assistant Station Master MTBF: Mean Time Between Failure CLS: Colour Light Signalling ECR: Lamp Proving Relay LED: Light Emitting Diode UV: Ultra Violet OK: Okay PCB: Printed Circuit Board ABS: Acrylonitrile Butadiene Styrene NO/NC: Normally Open/Normally Close AC/DC: Alternating Current/Direct Current 3.0 TERMINOLOGY 3.1 The terminology used in this specification is covered by the definitions given in IRS: S 23. 3.2 The terms referred to in this specification but not covered in IRS: S 23, are defined below : Blanking & Non-Blanking failure modes of LED signal lamps- In blanking mode, an LED signal lamp shall extinguish when input current drawn by the current regulator falls outside specified limits of rated input current or illumination falls to a value which is not less than 40% of nominal illumination due to a failure or any other reason. In such case, current regulator should not draw input current more than 15 mA at maximum rated voltage to ensure dropping of AC LED ECR. In non-blanking mode, an LED signal lamp shall remain lit when input current drawn by the current regulator falls outside specified limits of rated input current or illumination falls to a value which is less than 40% of nominal illumination due to a failure or any other reason. In such case, input current drawn by current regulator shall be limited to less than 40 mA to ensure dropping of AC LED ECR. Limit on input current shall apply when illumination has deteriorated to a value which is not less than 40% of nominal illumination. Page 6 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING 4.0 GENERAL REQUIREMENTS 4.1 The minimum visibility distance of LED signal lamps for main colour light signals shall be 600 m. in clear daylight with peak sunrays at rated voltage. 4.2 LED signal lamps shall also be visible to a driver stopping at the foot of the signal. 4.3 LED signal lamps shall be designed as one single unit (integrated) and they shall fit in the existing colour light signal housings as per Table-I given below, as applicable or as specified by the Purchaser. A conceptual diagram of integrated signal lamp unit is given in Annexure-III. Main Signal Reference Drawing No. SA : 23002 S 23024 / M Table-I 4.4 LED signal lamps shall be used with AC LED ECRs as per STS/E/Relays/AC Lit LED Signal/09-2002 only. 5.0 TECHNICAL REQUIREMENTS 5.1 Colour Co-ordinates : Colour co-ordinates of LED Signal lighting Units shall be as follows: Red & Green: Class „C‟of BS: 1376 Yellow Aspect: Class „B‟ of BS: 1376 Colour co-ordinates graph as per BS: 1376 is given in Annexure I. 5.2 OPERATING PARAMETERS Operating parameters of various types of LED Signal lamps when used with AC LED ECRs shall be as per Table- II given below: Sl. No. Parameter Main Signal 1. Rated voltage at Input terminals of 110V +25 % LED Signal lamp 2 Current at rated voltage per unit at 110 to 150 mA (rms) * Input terminals of LED Signal lamp 3. Illumination measured at 1.5m from 150 LUX 175 LUX 150 LUX LED Signal Lighting Unit in axial –10% + –10% + –10% + direction at rated voltage 40% 40% 40% 4. Colour Red Yellow Green Table II Note: (i) *Input current shall be within the specified limits in all design conditions of lighting except for non-blanking failure mode. 6.0 DESIGN CRITERIA 6.1 LED SIGNAL LAMP 6.1.1 LED signal lamp shall be so designed that in all designed conditions of its lighting, except for failure in non-blanking mode, it should ensure pick up of ECR and input current drawn Page 7 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING should be more than specified maximum pick up current of ECR with ECR connected in circuit. 6.1.2 LED signal lamp shall remain lit or extinguish as per the Blanking or Non Blanking failure mode selected in the Current Regulator in case of deterioration of illumination or when input current falls outside specified limits of rated input current due to a failure or any other reason as stipulated in Cl.3.2. 6.1.3 LED signal lamps of Green aspect shall be configured in blanking mode and LED signal lamps of Red aspect shall be configured in non blanking mode. LED signal lamps of yellow aspects shall have selectable option for blanking and non-blanking. 6.1.4 Fluctuation in input voltage shall not result in latching of signal to Blanking/ non blanking failure mode. 6.1.5 The LED signal lamp shall not reflect sunlight/headlight of loco as it may give misleading aspect to the driver. 6.1.6 LED signal lamp shall not light upto 60 V. 6.1.7 Power factor of LED signal lamp shall be 0.8 or better. 6.1.8 Voltage total harmonic distortion over full operating voltage range shall be less than 20%. 6.1.9 Dispersion angle of LED signal lamp, measured as per Annexure II, shall be ≥ 4° and ≤ 10° at 50% power points. 6.1.10 Light from LED signal lamp, when projected on a white target at 1.5 m from LED signal lamp the target shall be uniformly illuminated within half power points and shall be free from dark circles. 6.1.11 The LED signal lamp shall work satisfactorily (Input current will remain in the limits as specified in Clause 5.2) in ambient temperature varying from -10°C to +70°C and a relative humidity upto 95%. at 40°C + 2°C as specified in RDSO/ SPN/144/2006. 6.1.12 Number of LEDs used should not be less than 60 for Red and Yellow, 30 for Green LED signal lamp. Variation from stipulated number may be considered based on merits of the design. 6.1.13 LED signal lamp shall have a display area of 125 mm + 1 mm diameter. 6.1.14 LEDs in the lamp shall be arranged in more than one array so that in the eventuality of failure of an array, whole unit does not become blank. LEDs in the arrays shall be interleaved so that effect of failure of any array is spread out. 6.1.15 It shall be ensured that LED signal lamp is lit and producing illumination while drawing current more than specified for blanked/extinguished signal. The method of achieving of the above shall be advised in detail. 6.1.16 Design shall be such that failure of a LED shall not vary illumination by more than 5 % of nominal illumination. 6.1.17 Sensing of illumination, if used, shall activate after LED signal lamp is completely lit to prevent hunting. Page 8 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING 6.1.18 Current regulation of current to LED arrays shall be within 2% for input voltage range as specified in Cl. 5.2. 6.1.19 Design shall be such that normally LEDs of a LED array are driven within average drive current range recommended by the LED manufacturer and in no circumstances LEDs of an array shall be driven by current more than the maximum current recommended by the LED manufacturer. Details of the same shall be submitted at type approval stage. 6.1.20 Power circuit and heat dissipating components shall be provided in a separate compartment in LED signal lamp with adequate heat dissipation arrangement through heat sink with fins. Current regulation circuit for LED arrays and LEDs shall be kept in a separate compartment with heat dissipation arrangement through heat sink. 6.1.21 Isolation or step down transformer with line filter cct. should be provided at input stage of LED signal lamp in failsafe manner to filter power surges. 6.1.22 At input stage of LED signal lamp two bridge rectifier ccts. in parallel with each limb having two diodes in series should be provided. Electrolytic capacitors should also be used in series-parallel combination to achieve failsafe redundancy. 6.1.23 Resistance used to dissipate power should be a series-parallel combination of standard SMD resistances or Aluminium encapsulated wire wound type to achieve failsafe redundancy and better heat dissipation. 6.1.24 LED signal lamp shall be provided with a curved transparent cover of UV stabilized polycarbonate material having a thickness of 2.5 mm ±.5 mm. 6.1.25 Body of LED signal lamp shall be made of industrial grade plastic like ABS or fibre glass. Metallic body parts may be used where these facilitate heat dissipation. LED signal lamp shall get fitted securely on the existing signal housings without any modification on them. 6.1.26 Parts of body of LED signal lamp as visible from front after fitting in CLS unit shall be black. Colour of the body of the LED signal lamp shall be that of the aspect displayed to indicate aspect colour for LED signal lamp. 6.1.27 Body of LED signal lamp shall fulfill IP-65 requirement as per international standard. 6.1.28 Four terminals of Phosphorous bronze shall be provided on back of the lamp. On inner two terminal MOV of 175V rating shall be provided. Outer terminals shall be marked as „input‟ terminals and used for input termination. 6.1.29 All LED signal lamps shall meet the requirements as mentioned in clauses 2.3, 2.5, 5.2 & 6 of RDSO /SPN/144/2006. 6.1.30 LEDs used in LED signal lamp shall be of high performance quality and from reputed manufacturers as stipulated by RDSO. The maximum junction temperature of a LED shall not be less than 100 deg. and epoxy used in the LED shall have UV inhibitors. 6.1.31 The electronic components, switches and connectors used shall be of Industrial grade and shall comply Cl. 5.1 of RDSO/ SPN/144/2006, as applicable. High life electrolytic capacitor with more than or equal to 8000 hours life and capacitance tolerance within ± 20% shall be used for power conditioning. The operating temperature rating of all Page 9 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING electrolytic capacitors used shall be more or equal to 105 deg.C. Coils/ transformers wherever used should be fire retardant and conform to „H‟ class. 6.1.32 Manufacturer shall maintain proper accountal of LEDs and other critical components being used. The record shall include various details like source of supply, procurement invoice no. & date, quantity, incoming rejection, lot-wise consumption etc. which may be verified by inspecting officials. 6.1.33 At least 10% LEDs and other critical components of every procured lot shall be tested before use to check electrical/optical characteristics as per LED manufacturer‟s data sheet. Lot-wise test record shall be maintained, which may be verified by inspecting officials. 6.1.34 Number of LEDs and their Part no. shall not be changed without prior approval of RDSO. 6.2 A rail mountable fuse terminal block with fuse link of 400 mA rating & a disconnect type terminal block as per RDSO specification No. RDSO/SPN/ 189/2004 (latest) and 175 V MOV shall be provided with a LED signal lamp. Terminal blocks shall be 3/4 conductor type (1/2 input and 2 output terminals) for terminating MOV on output side. Mounting rail of suitable length (12 inches length with supply of every 20 signal lamps or part thereof. 7.0 DESIGN CRITERIA FOR HIGH SPEED LINES (165 Kmph) 7.1 LED signal lamp shall have a display area of 200 mm + 10 mm diameter. 7.2 Number of LEDs used should not be less than 90 for Red and Yellow, 45 for Green LED signal lamp. Variation from stipulated number may be considered based on merits of the design. 7.3 The minimum visibility distance of LED signal lamps for main colour light signals shall be 1000 m. in clear daylight with peak sunrays at rated voltage. 7.4 Operating parameters of various types of LED Signal lamps when used with AC LED ECRs shall be as per Table- III given below: Sl. No. Parameter Main Signal 1. Rated voltage at Input terminals of 110V +25 % LED Signal lamp 2 Current at rated voltage per unit at 60 to 100 mA (rms) Input terminals of LED Signal lamp 3. Illumination measured at 1.5m from 300 LUX 300 LUX 300 LUX LED Signal Lighting Unit in axial –10% –10% –10% + direction at rated voltage + 40% + 40% 40% 4. Colour Red Yellow Green Table III 7.5 Rest design criteria and test criteria shall be same as that applicable for normal LED signal lamp. Note: (i) Above parameters are tentative and shall be refined after development of prototype. Page 10 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING (ii) This lamp is proposed to be fitted in the slot of outer lens in the CLS housing. Hence, CLS housing will also require modification for fitting the lamp and maintenance from the rear of the CLS housing. (iii) This will also require development of compatible ECR with fast to pick up and slow to drop feature in line with lighting time of the lamp. 8.0 TESTS & PERFORMANCE CRITERIA 8.1 LED signal lamp shall pass the climatic tests as per Sl. No. 1, 2, 3, 4, 5, 6, 7 & 12 of Cl. 9.3 of specification RDSO / SPN / 144 / 2006 as applicable for out-door track side electronic equipment upto & including 75 Kg. weight category. 8.1.1 LED signal lamp shall pass driving rain test as per Sl. No. 9 of Cl. 9.3 of specification RDSO / SPN / 144 / 2006. These units shall be tested after fixing in an enclosure similar to colour light signal housing without hood and with backdoor open. 8.1.2 After test as per every Sl. No. of Cl. 9.3 of specification RDSO / SPN / 144 / 2006, as specified above, no LED should fail; there should not be any damage in the unit or visual change in colour. Also input current and illumination will not change by more than ± 5% of original values and will be within specified values as per clause 5.2. After completion of all tests, colour co-ordinates shall remain within specified class as per clause 5.1. 8.2 Applied high voltage test for LED signal lamp: The lamp shall withstand for one minute without puncture and arcing a test voltage of 2000Volts rms applied between body and all AC line terminals looped together. (For testing with part of body which is used as heat sink, test voltage shall be 1500Volts rms) The test voltage shall be alternating of approximately sinusoidal waveform of any frequency between 50 Hz and 100 Hz. LED signal lamp should not glow during the test. 8.2.1 During type test, HV test should also be carried out on a lamp with body in open condition to observe sparking, if any generated during HV test. In case of sparking lamp should be treated as failed. 8.3 Insulation Resistance Test for LED signal lamp: This test shall be carried out- (a) Before the high voltage test (b) After the high voltage test (c) After completion of the climatic test The Insulation Resistance shall be measured between the body and the current carrying terminals looped together at a potential of 500 V DC. There shall not be appreciable change in the values measured before and after high voltage test and these values shall not be less than 100 Mega ohms. After completion of climatic test, the insulation resistance shall not be less than 10 Mega ohms for the equipment at a temperature of 40°C and relative humidity 60%. 8.4 Dispersion Angle test: This shall be measured as per Annexure II. 8.5 FAIL SAFETY Page 11 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING i) LED signal lamp shall be so designed that any short/open or any other defect in any of the component will not lead to unsafe / undesirable situation. ii) Spike protection shall be provided in the LED signal lamp. This shall be achieved by reliable means. iii) There shall never be any possibility of change in colour of signal light unit with variation in temperature, current, voltage and ageing to unsafe side i.e. in any usual / unusual circumstances. Red to Yellow or Green Yellow to Green Lunar White to Yellow or Green iv) LED signal lamp shall comply Cl. 3 & 4 of specification RDSO / SPN / 144 / 2006, as applicable. v) Fail safety validation shall be done by an independent agency which has credentials & experience for similar validations. Fail safety validation shall be done as per CENELEC standards EN 50126 & EN 50129 for Safety Integrity Level 4. 8.6 Burning in test: LED signal lamp shall be kept continuously ON for minimum 168 hrs. at 60 °C at rated voltage. There shall not be any difference in operating parameters before and after burning in test. 8.7 Thermal cycling and power cycling tests: All PCBs and power supply modules shall be subjected to thermal cycling and power cycling tests respectively as per Cl. 9.3 of specification RDSO / SPN / 144 / 2006. Proper test record having traceability to respective PCB/module shall be maintained by the manufacturer. 8.8 Calculation details of MTBF as per Part stress method shall be furnished by the manufacturer at the time of initial approval. 9.0 INSPECTION CRITERIA 9.1 TYPE TEST For type test, two prototype samples each of red, yellow and green aspects shall be subjected to following tests: (i) Visual inspection & dimensional check (ii) Colour co-ordinates (Clause 5.1) (iii) Operating Parameters (Clause 5.2, 7.4) (iv) Output current regulation of current regulator (Clause 6.1.18) (v) Compatibility with ECR (vi) Ambient temperature test (Clause 6.1.11) (vii) Climatic tests (Clause 8.1, 8.1.1, 8.1.2) Page 12 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING (viii) UV Stabilization test on cover (Clause 6.1.24) (ix) Effect of reflected light (Clause 6.1.5) (x) Visibility test (Clause 4.1, 4.2, 7.3) (xi) Fail safety (Clause 8.5) (xii) Applied high voltage test (Clause 8.2) (xiii) Insulation resistance test (Clause 8.3) (xiv) Minimum lighting voltage(Clause 6.1.6) (xv) Dispersion Angle test (Clause 6.1.9, 8.4) (xvi) Fluctuation in input voltage (Clause 6.1.4) 9.1.1 An open blown out model of offered LED signals shall also be submitted for initial type test. 9.1.2 Documents as per Cl. 14.0 shall be submitted alongwith samples. 9.1.3 Fail safety is not required for subsequent maintenance approvals provided there is no change in circuit design. 9.2 ACCEPTANCE TEST 9.2.1 Out of a lot, 20% of the samples shall be subjected to following tests: (i) Visual inspection & dimensional check (ii) Operating Parameters (Clause 5.2, 7.4) (iii) Minimum lighting voltage(Clause 6.1.6) (iv) Compatibility with ECR 9.2.2 Minimum five samples of each type / colour of aspects from those which have passed tests as per Cl. 9.2.1 shall be subjected to following tests- (i) Temperature severities test (Clause 6.1.11 except humidity) (ii) Colour co-ordinates (Clause 5.1) (iii) Insulation resistance test (Clause 8.3 (a)) (iv) Dispersion Angle test (Clause 6.1.9, 8.4) (v) Fluctuation in input voltage (Clause 6.1.4) Page 13 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING 9.2.3 Acceptance tests as per Cl. 9.2.2 (ii) to (v) shall be conducted after temperature severities test. Operating parameters, minimum lighting voltage and compatibility with ECR tests shall also be conducted after temperature severities test. 9.2.4 Failure in any of the tests is not acceptable. 9.3 ROUTINE TEST 9.3.1 Following routine tests besides other tests, as deemed fit to ensure quality, reliability and compliance of this specification shall be done by the manufacturer on all the lamps: (i) Thermal cycling & power cycling tests (Clause 8.7) (ii) Visual inspection & dimensional check (iii) Burning in test (Clause 8.6) (iv) Colour co-ordinates (Clause 5.1) (v) Operating Parameters (Clause 5.2, 7.4) (vi) Output current regulation of current regulator (Clause 6.1.18) (vii) Compatibility with ECR (viii) Insulation resistance test (Clause 8.3 (a)) (ix) Minimum lighting voltage(Clause 6.1.6) (x) Dispersion Angle test (Clause 6.1.9, 8.4) 9.3.2 Tests as per Cl. 9.3.1 (iv) to (x) shall be conducted after Burning in test. Proper record of routine tests shall be maintained by the vendor. 10.0 DESCRIPTION TO BE GIVEN BY PURCHASER (i) LED signal lamp- Red, green or yellow aspect (as required) for main colour light signal as per RDSO specification No. (No. will be given at the time of issue.) 11.0 SCOPE OF SUPPLY Scope of supply shall also include terminal blocks, fuse links and mounting rail as per Cl. 6.2. 12.0 WARRANTEE The vendor shall give a warrantee of 60 months for LED signal lamps as given below: 12.1 In case, LED signal lamps fail within 24 months of supply, vendor will jointly inspect the defective lamps with the railway after getting/telephonic/ written information from the railway. Defective lamps will be collected and replaced by the vendor free of cost by new Page 14 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING lamps within 45 days of information by the railway. New lamps will be supplied after RDSO inspection. 12.2 In case, railway does not inform the vendor about the defective lamps within 60 days of expiry of 24 months, vendor‟s liability will be limited to rectification of the defective lamps. 12.3 During rest of the warranty period, the defective lamps shall be sent by the railway to the vendor which will be rectified by the vendor and tested by the vendor for routine tests as per Clause 9.3.1 (ii) to (x). Rectified lamps will be returned by the vendor within 45 days of receipt of defective lamps alongwith their routine test reports. Rectification / replacement record and failure analysis of ALL rectified/ replaced lamps shall be maintained by the vendor and submitted to RDSO every quarterly. 13.0 MARKING 13.1 Clauses 12.1 and 12.2 of specification RDSO / SPN / 144 / 2006 shall be complied. 13.2 The words Indian Railway Property shall be engraved /embossed on every unit in letters of 5mm size (minimum) at a conspicuous place. 13.3 The anodized name plate shall be firmly attached to every unit and shall show the following information: (a) Name or trademark of the manufacturer (b) Serial number of the unit (c) Version No. of the unit* (d) RDSO‟s specification number (e) Name and aspect of the signal (f) Operating voltage- 110V AC (g) Month and year of manufacture *In case of an alteration in the design of a unit, new version number shall be assigned. 14.0 DOCUMENTATION Following documents shall be supplied- (a) Two copies of Installation and maintenance manual. This should also include following information: (i) Guaranteed performance data, technical and other particulars. (ii) Schematic block diagram showing mounting arrangement of various components & details of each type of assembled PCB. (iii) Details of Hardware e.g. schematic diagrams of the system circuits/ components, details for each type of assembled PCB and part list. (iv) Mechanical drawings of every unit (v) Part no. and manufacturer‟s data sheet of LEDs used (vi) Trouble shooting procedure alongwith test voltages and waveforms at various test points in the PCBs (vii) Details/procedure of Trouble shooting through HMU (viii) Dos & Don‟ts (Pocket size laminated cards) Page 15 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING (b) Pre-Commissioning check list 15.0 PACKING 15.1 All LED signal lamps shall be individually wrapped in bubble sheet and packed in individual card board boxes. The empty spaces shall be filled with suitable filling material.. Alternatively, these may be packed in thermocole boxes. The units shall be finally packed in a wooden case or card boxes of sufficient strength so that it can withstand bumps and jerks encountered in a road/ rail journey. 15.2 Every box shall be marked with code numbers, contents and name of manufacturer. The upside shall be indicated with an arrow. Boxes should have standard signages to indicate the correct position and precaution “Handle with Care‟‟ with necessary instructions. 15.3 The units and their sub assemblies shall be so packed as to permit convenient handling and to protect against loss or damage during transit and storage. 16.0 INFRINGEMENT OF PATENT RIGHTS Indian Railways shall not be responsible for infringement of patent rights due to similarity in design, manufacturing process, use of components used in design, development of manufacturing of LED signal and any other factor which may cause such dispute. 17.0 ISO PROCEDURES 17.1 All the provisions contained RDSO‟s ISO procedures laid down in Document No. QO-D- 8.1.11 Ver. 1.0 dated 12.09.2018 (“Vendor - Changes in approved status”) and subsequent versions/amendments thereof, shall be binding and applicable on the successful vendor/vendors in the contracts floated by Railways to maintain quality of products supplied to Railways. -----X----- Page 16 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING Annexure I BS 1376 : 1974 y x Chromaticity limits for signal colours Page 17 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING Annexure II Measurement procedure for Dispersion Angle 1. Light up the aspect at the nominal voltage on 110 V and place it on the test bench. 2. The Dispersion Angle shall be calculated by measuring the half intensity points of the dominant wavelength at 1.5 m from LED signal lighting unit in axial direction on both the sides and taking average of the distances, d1 & d2 in metres (d = (d1 + d2) / 2) 3. The half intensity, point is where half of the normal illumination at rated voltage falls. The Dispersion Angle shall be calculated using the formula -1 tan d – r = Ø/2 1.5 4. „r‟ is the distance from centre of the unit to the outer most LED provided in the unit. d1 d2 Ø/2 1.5 m Face r Ø/2 5. Dispersion Angle = Ø ……………x…………..x……………. Page 18 of 19  Specification No. RDSO/SPN/199/2010 Rev. 1.1 LED SIGNAL LAMPS FOR MAIN COLOUR LIGHT SIGNALS FOR RAILWAY SIGNALLING Annexure III Page 19 of 19