SCHEDULE B1 TECHNICAL SPECIFICATION FOR REROFITTING OF 415 V AIR CIRCUIT BREAKER UKAI THERMAL POWER STATION

Transcription

1 SCHEDULE B1 TECHNICAL SPECIFICATION FOR REROFITTING OF 415 V AIR CIRCUIT BREAKER AT UKAI THERMAL POWER STATION Signature And seal of Bidder Page 1 of 42

2 INDEX SL. CONTENT DESCRIPTION PAGE NO NOS. 1 SECTION I TECHNICAL SPECIFICATION 3 2 SECTION II ANNEXURES 25 3 SECTION III TECHNICAL SCHEDULES 31 Signature And seal of Bidder Page 2 of 42

3 SECTION I: TECHNICAL SPECIFICATION CONTENTS Sr. No. DESCRIPTION PAGE NO INTENT OF SPECIFICATION SCOPE EXPERIENCE & QUALIFYING REQUIREMENT OF BIDDER SCHEDULE OF REQUIREMENT STANDARDS GENERAL TECHNICAL REQUIREMENTS SPECIFIC TECHNICAL REQUIREMENTS AND PRINCIPAL 13 PARAMETERS TESTS INSPECTION DURING MANUFACTURING QUALITY ASSURANCE PLAN PERFORMANCE GUARANTEE DEVIATIONS DOCUMENT SUBMISSION DRAWINGS/DATA/DOCUMENTS TO BE SUBMITTED BY 21 BIDDER ALONGWITH THE BID DRAWINGS/DATA/DOCUMENTS TO BE SUBMITTED BY 21 SUCCESSFUL BIDDER DEMONSTRATION PACKING AND TRANSPORTATION TRAINING SUPERVISORY INSTALLATION & COMMISSIONING SCHEDULES GUARANTEE FOR MAINTENANCE SPARES AND 24 SERVICES Signature And seal of Bidder Page 3 of 42

4 SECTION : I : INTENT OF SPECIFICATION : This specification is intended to cover design, engineering, manufacture, assembly, inspection and testing at manufacturer's works, packing & forwarding, supply, delivery at Power House site, installation and commissioning of Amp. 415 V Electrically Operated Draw out Type Air Circuit Breaker in place of existing old Tata Merlin & Gerin make Air circuit breakers at GSECL Ukai Thermal Power Station Stage-I as specified hereunder & as given in the schedule of requirements : All Annexure appended to this specification shall form part of this specification and supplement the requirement specified herein. The specification shall be read and construed in conjunction with the drawings and annexure to determine the scope of work and terminal points : Necessary modification, for co-ordination/matching of new 415 V Air Circuit Breaker to suit the requirements of existing breaker, Bus Bars, etc. shall be covered under scope of contract : It is also intended to include complete operation check, tests to confirm suitability of new breaker both technically as well as dimensionally to existing breaker and system for adoption as well as performance and this will be the complete responsibility of the bidder : The bidder shall visit the site and get him acquainted with the actual requirements of tender prior to quoting rates. No claims for inadequate description of the scope shall be entertained at a later date : It is not the intent to completely specify all details of design and construction herein. Nevertheless, the equipment and installation shall conform to high standards of engineering design and workmanship in all respects and shall be capable of performing continuous operation in a manner acceptable to the Purchaser. Reliability, availability and maintainability are of the utmost importance to the Purchaser in the design of the equipment described herein. Signature And seal of Bidder Page 4 of 42

5 : SCOPE : The scope of supply shall include but not limited to supply of Air Circuit Breaker. The supply includes 12 (Twelve) Nos Amp. Air circuit breakers as specified in specification with all required accessories and fitting arrangement : Shifting of ACBs as per requirement from Ukai TPS store to Switchgear panel where retrofitting is required to be carried : The scope includes preparation and furnishing of installation, commissioning instructions and maintenance manual. Preparation and furnishing softcopy as well as hardcopy of four sets of all types of as built drawings including schematic, internal external cable connection drawings, wiring schedules, circuit breaker data sheet etc : The scope of supply shall include supply of wires, lugs, sleeves, connectors, screws, nut bolts, plate, channel, gasket, Switches, LED Indications, fuses, contactors etc. required for retrofitting and other accessories which are necessary for satisfactory operation of breaker though not individually or specifically mentioned herein : The scope includes disconnection of existing control, indication, annunciation, CT, PT connections from panels and removal of existing breakers etc : The scope includes cut outs for proper installation of new breaker on existing panels, supply of plate for installing new breaker and fixing of it and blanking the open space on existing panel by plates, gasket etc. Replacement / modification of bus bar if required for incoming and out going connection which includs supply also : The scope includes wiring/terminations to include existing interlocks, permissive, indication, local and remote annunciation, Protection & Metering equipments, contact multiplications, grounding etc and also additional wiring required if any at the time of commissioning. Adoption of under voltage release, protection and metering circuit, auto change over circuit etc. as per requirement : The conducting IR Value measurement, drop test, contact resistance,commissioning tests etc. of breaker and Checking /testing of circuit breaker operation with protection relays, interlocks- permissive, etc. and furnishing of test certificates. Signature And seal of Bidder Page 5 of 42

6 : Any defects arises in circuit breaker or circuit breaker operation found defective during testing at site shall be replaced free of cost, which include transportation also : Replacement / Modification of fix contacts of bus bars wherever necessary including all other works to complete it : The retrofitting job work should be completed during shutdown : GSECL will provide following facilities to the successful bidder at the time of work execution a) Required electrical power supply for drilling / welding / cutting etc. free of cost b) Residing facilities to technician & supervisors at Company s Hostel on chargeable basis as per company s rule if demanded so on availability basis : The scope includes training to site engineers : Any other works which could not be specified above but are necessary to complete the job shall be the responsibility of the bidders : The work covered in specification shall be carried out with sufficient skilled manpower. Damage if any occurs during execution of job to any equipment, recovery shall be made from contractor s bill : Successful bidder will execute/plan the work as per instruction of Chief Engineer or his representative : The successful bidder/party will be solely responsible for any fatal/non fatal accident which occurs to their person during execution of work or stay at Ukai : Payment shall be made for actual quantities of work executed and based on joint measurement basis : The decision of Chief of power station will be final and binding for any major / minor site constraints those may arise during execution of work : If the work found not satisfactory or non progressive, purchaser will take action deemed fit to see that work be completed in time at party s risk and cost. Signature And seal of Bidder Page 6 of 42

7 : EXPERINCE & QUALIFYING REQUIREMENT OF BIDDER : The bidder shall be original equipment manufacturer (OEM). The offered Circuit Breaker have to be designed, manufactured and tested as per relevant IS/IEC with latest amendments : The bidder should clearly indicate the quantity and Single Value Contract executed during last FIVE (5) years, for the offered equipment. Bidder should have executed one single contract during last five years for the quantity equivalent to tender / bid : The minimum requirement of manufacturing capacity of offered type, size and rating of Circuit Breaker shall be as per Annexure-I. The bidder should indicate manufacturing capacity by submitting latest updated certificate of a Chartered Engineer (CE) : Breaker offered shall be in service for a minimum period of Three (3) years and satisfactory performance certificate from utilities like State Electricity Corporations, NTPC, PGCIL etc. in respect of this should be submitted. The details shall be submitted in Schedule 5 for Performance and Experience Detail : Breaker offered shall have type test certificates from accredited laboratory (accreditation based on ISO/IEC/Guide 25/17025 or EN by the national accreditation body of the country where the lab is located.) as per IS/IEC/Technical specification, not older than FIVE (5) years from the date of opening of technical bid : The bidder shall guarantee for supplying maintenance spares and services as well as repairing of relays for a period of the life expectancy of 25 years. Signature And seal of Bidder Page 7 of 42

8 : SCHEDULE OF REQUIREMENT : The requirement of Air Circuit Breaker to be supplied against this specification and their required deliveries are given in Annexure II (SCHEDULE OF REQUIREMENT AND DESIRED DELIVERIES) : Delivery instructions shall be issued to the successful bidder after placement of orders and after inspection and testing of Air Circuit Breaker at manufacturer s works STANDARDS: : Unless otherwise specified elsewhere in this specification, all equipment and materials shall be designed, manufactured and tested in accordance with the latest revisions of Indian Standards or British Standards and International Electro-Technical Commission (IEC) Standard available at the time of placement of order. The supplier shall submit the copies of the relevant standards applicable to the relay : Equipment meeting with any other standard, which ensures equal or better quality, may be accepted. Where the equipment conforms to any other standard, the salient points of difference between the standards adopted and the above standards shall be clearly brought out in the tender. A certified copy of such standard in English version shall be submitted along with the bid : A list of applicable Standards is given in Annexure III GENERAL TECHNICAL REQUIREMENTS LABEL : The circuit breaker shall also be provided tag/label at all accessories of the breakers like connectors, switches, motors, U/V release, coils springs etc. corresponding to drawing.these tags/labels shall be mounted directly by the side of the respective equipment / accessories and shall not be hidden by the equipment wiring : Labels shall be made of Aluminum anodized plate P.V. Castings or permanent type. Labels shall have white letters on black background. All equipment / accessories shall be given standard abbreviation numbers with name of device, corresponding to the ones shown in the panel internal wiring and circuit breaker manual. Signature And seal of Bidder Page 8 of 42

9 : Internal Wiring : All wiring shall be carried out with 1100V grade single core multi strand flexible copper conductor wires with HRPVC insulation and shall be flame retardant, vermin and rodent proof. The current carrying capacity of wire shall be adequate for the duty assigned to it considering short circuit condition and shall have sufficient flexibility to facilitate proper termination at any location. Color coded wires (red, yellow, blue, black) shall be used for CT, The copper conductor used for internal wiring be one 2.5 Sq mm per lead : The wire numbers shown in the wiring diagram shall be in accordance with IS375/BS152/BS156. All wires directly connected to trip circuit breaker or devices shall be distinguished by addition of a red colored or lettered ferrule. Number 6 and 9 shall be used with proper marking conforming certainty of 6 and 9 Number from all directions : Panel wiring shall be securely supported, neatly installed by lacing and tying, readily accessible and connected to equipment terminals and terminal blocks. Flame retardant, plastic wiring channels/troughs with strap on plastic covers shall be used for this purpose. Sufficient space in channel for modification of wiring shall be kept : Wire termination shall be made with solder less crimping type of tinned copper lugs which firmly grip the conductor. Insulation sleeves shall be provided at all the wire terminations. Engraved core identification plastic ferrules, marked to correspond with panel wiring diagram shall be fitted at both ends of each wire. Ferrules shall fit tightly on the wire and shall not fall off when the wire is disconnected from terminal blocks : The bidder shall be responsible for the completeness and correctness of the internal wiring and for the proper functioning of the connected equipment : Earthing : Earthing strips with suitable guide connector for draw out circuit breaker shall be provided such that it maintains proper earthing contact at all position of the circuit breaker : Looping of earth connections which would result in loss of earth connection to other devices when the loop is broken shall not be permitted. However, looping of earth connections between equipment to provide alternative paths to earth bus shall be provided. Signature And seal of Bidder Page 9 of 42

10 : Terminal blocks : Terminal blocks shall be 1100 V grade, 45 amps rated, one piece moulded, complete with insulated barriers, stud type, melamine housing brass terminals, washers, brass nuts and brass lock nuts and identification strips. Markings on the terminals strips shall correspond to wire number on the wiring diagrams. Not more than 2 wires shall be connected to any terminals : All spare contacts and terminals of the circuit breaker shall be wired up to terminal blocks in the panel with distinguished ferrule numbers : Molding materials shall be self extinguishing or resistant to flame propagation, substantially non hydroscopic and shall not carbonized when tested for tracking. The insulation between any terminal and frame work between adjacent terminals shall with stand test of 2kV RMS for one minute. The molding shall be mechanically robust to withstand handling while making terminations : Easily removable Protective transparent plastic covers for placing over the live parts of the terminal blocks shall be provided invariably : Painting : All sheet steel work shall be phosphated in accordance with the following procedures and in accordance with IS; 6005 `Code of Practice for phosphating iron and steel : Oil, grease, dirt and swart shall be thoroughly removed by emulsion cleaning : Rust and scale shall be removed by pickling with dilute acid followed by washing with running water, rinsing with slightly alkaline hot water and drying : After phosphating, through rinsing shall be carried out with clean water followed by final rinsing with dilute bi-chromate solution and oven drying : The phosphate coating shall be sealed by the application of two coats of ready mixed, stowing type zinc chromate primer. The first coat may be `Flash dried while the second coat shall be stowed. Signature And seal of Bidder Page 10 of 42

11 : After application of the primer, two coats of finishing synthetic enamel paint shall be applied, each coat followed by stowing. The second finishing coat shall be applied after completion of tests. The plate and all modified fabrications shall have colour confirming to shade of existing panel : Each coat of primer and finishing paint shall be of a slightly aesthetically pleasing appearance free from dirt and uneven surface : The paint thickness shall be microns for powder coating Mounting : The breaker shall be mounted such that removal and replacement can be accomplished individually without interruption of service to adjacent equipment/door conforming all safety interlocks as per IS and IEC : CIRCUIT BREAKER : The circuit breaker shall confirm to the requirements of IS: / IEC &2, EN 60947, CEI EN and shall respect EC directives Electromagnetic Compatibility Directive (EMC) N.89/336 EEC or other applicable standards : The Circuit breaker shall be suitable for efficient and reliable continuous operation described in the specification : All Circuit Breaker shall be suitable for operation, at 50 Hz +/- 5%, and 415V +/- 10% AC voltage with adequate thermal capacity for continuous operation : The circuit breaker shall be capable of rapid and smooth interruption of currents under all conditions, completely suppressing all undesirable phenomena even under the most severe and persistent short circuit conditions : Main contacts shall have ample area and contacts pressure for carrying the rated current and the short time rated tripping current of the breakers without excessive temperature rise which may cause pitting or welding. Contacts shall be adjustable to allow for wear and shall be easily replaceable and shall have a minimum of moveable parts. It shall be designed such that no maintenance shall be required under normal condition of use. Signature And seal of Bidder Page 11 of 42

12 : The temperature rise and maximum temperature on any part of the circuit breaker, while in service under continuous full load conditions shall not exceed the permissible limits of temperature rise as specified in the IEC- 694:1996 publication for alternating current circuit breakers with bolted type silver plated bus bars, jumpers & riser ends. Gaskets shall be of a material which will not deteriorate under service conditions. Metallic compression steps shall be provided for compressible gasket : The circuit breaker shall be suitable for rapid closing and tripping. The breaker opening and closing operations shall be obtained from compressed spring charging mechanism. The mechanism for spring charging shall be motor operated with facility for manual, charging when required. It shall be suitable for re-closing once. Spring operated mechanism shall be complete with opening spring, closing spring and all necessary accessories to make the mechanism a complete unit. Each mechanism shall be designed to have a continuous sequence of circuit breaker opening and closing operations, to be obtained by control switch. Operating mechanism shall be operated by local / remote electrical control : The Circuit breaker shall be with position and door interlocks, Test - service position micro switches/ limit switches, required No. of Auxiliary contacts, isolating contacts, closing and shunt releases, spring charge motor, safety interlocks, barriers, Mechanical Indicators, Push buttons etc. required for safe and reliable operation : Mechanical indicators to show the close or open position of the contacts shall be provided. Operating handle shall be provided for charging the operating mechanism : All MS parts of breakers and ferrous parts such as hangers, supports, bolts & nuts shall be hot dip galvanized as per IS:2629 (latest edition) with zinc platting & olive green passivation. The material for spring shall be rust proof : The circuit breaker along with the operating mechanism shall be mounted on a telescopic rail, to facilitate withdrawal, whenever required : Working parts of the operating mechanism shall be of corrosion resisting material, bearing which requires grease shall be equipped with pressure type grease fittings. Bearings pins, bolts, nuts and other parts shall be adequately pinned or locked to prevent loosening or changing adjustment with repeated operation of breaker. Breaker wheels shall be provided with Signature And seal of Bidder Page 12 of 42

13 ball bearings. Manufacturer shall indicate or mark the critical settings and gaps to be maintained, undisturbed for satisfactory operation of breaker by RED marks and shall mention it on name / rating plate : all circuit breakers and their drawings shall have phase indications as R- Red, Y-Yellow and B-Blue or equivalent : All not used terminal shall also be provided with screws washers, lugs etc as for used terminal : It shall be possible to discriminate ACBs with downstream ACB / MCCB / MCB wherever required : It shall be Interchangeable with identical type and rating without disturbing any wiring or contact configuration etc : SPECIFIC TECHNICAL REQUIREMENTS AND PRINCIPAL PARAMETERS : The Circuit breaker shall be air break type, 3 Pole, electrically operated, draw out type (EOD) : The operating mechanism must be stored energy type with operation by means of chargeable springs fitted with anti pumping facility. The springs charging shall be by means of geared motor and also manually by activating the front lever. The operating mechanism shall be of the Open/Close/Open stored energy type : The circuit breaker shall be mechanically and electrically trip free : The mechanical indicators on the front panel of the circuit breaker shall indicate ON, OFF Spring Charged and Spring Discharged status conditions : The ACB shall be provided with separate Position limit Switches having 2 N/O and 2 N/C contacts for both SERVICE and TEST position : The circuit breaker shall be provided with arc chutes which shall be removable at site without using any tool and without removing the breaker from panel. They shall be design to permit rapid dispersion, cooling and extinction of arc. Signature And seal of Bidder Page 13 of 42

14 : Connection/disconnection mechanism/inter locks : The ACB shall be provided with mechanical interlocks which will prevent sliding of breaker from SERVICE to TEST position or vice versa unless it is OFF : The ACB shall be provided with mechanical interlocks which will prevent closing of breaker unless it is in SERVICE to TEST position : It shall be possible to disconnect the breaker without having to open the door : The door opening shall not be possible unless breaker is in TEST or ISOLATE position. The door opening shall not be possible with circuit breaker in the connected position : Unless the door is closed, the sliding of breaker from TEST to SERVICE position shall not be possible : All accessories of circuit breaker like U/V release, shunt release, closing coil etc shall be accessible from the front side of circuit breaker.it shall be possible to connect all auxiliary wiring from the front of the circuit breaker : Access to control circuit of circuit breaker shall be from front side : In case U/V release is de-energized, CB contacts shall not attempt to move in case a closing command ( either manual or electrical) is applied : All electrical auxiliaries shall be installable on site without requiring special tool : The mechanical life & electrical life of circuit breaker shall be specified without replacement of the main contacts/arcing contacts and arcing chambers : All circuit breaker shall have total segregation between power and front shield using double insulation so as to guarantee maximum operational safety : All the circuit breaker in the range shall have the same height and depth : No safety clearance shall be required around draw out circuit breakers. Signature And seal of Bidder Page 14 of 42

15 : The Principal Technical Parameters Sr. No. Parameters GSECL Ukai Thermal Power Station Amp. ACB 1 Name of Manufacturer L&T / SIEMENS / ABB / CGL / Schneider / C&S 2 Type of Circuit Breaker ACB Draw Out type 3 Conforming Standard IS: , IEC , EN & GB No. of Poles 3 5 Rated Operational Voltage Ue 415 ± 10% 6 Rated Continuous Current at 40 C ambient temperature. In 2500 Amp. 7 Rated Frequency 50 Hz ± 5% 8 Rated Insulation Voltage Ui 1000 V 9 Rated Impulse withstand voltage Uimp 8 KV 10 Making capacity (ka peak), Icm up to 415 ± 10% voltage 143 ka 11 Rated service short circuit breaking capacity Ics up to 415 ± 10% voltage 65 to 80 ka rms 12 Rated Ultimate short circuit breaking capacity Icu up to 415 ± 10% voltage 65 to 80 ka rms 13 Rated Short time withstand current and short time delay Icw for 1 Sec. up to 415 ± 10% voltage 65 ka rms, 1 sec. 14 Utilization Category B 15 Breaker Closing Time ms Breaker Opening Time ms Allowable No. Of Operations -cycle Mechanical Operation (Minimum) Electrical Operation (Minimum) Auxiliary control circuit voltage 220V DC Limits of voltage for satisfactory operation of the following devices as %age of normal voltage 19 (a) Spring Charge Motor 85 to 110 % (b) Closing Coil 85 to 110 % (c) Shunt trip coil 70 to 110 % 20 Service Temperature Up to 70 C 21 Minimum No. of Auxiliary contacts required 8NO + 8NC 22 Degree Of Protection IP 30 Signature And seal of Bidder Page 15 of 42

16 : TESTS : Type test : The circuit breaker offered shall have type test certificates from accredited laboratory (accreditation based on ISO/IEC/Guide 25/17025 or EN by the national accreditation body of the country where the lab is located.) as per IS/IEC/Technical specification, not older than FIVE (5) years from the date of opening of technical bid : The type test reports for following shall be submitted by the bidder for type and rating of equipment offered. The bidder shall also submit type test reports for tests other then indicated below but mentioned in IS/IEC (a) Dielectric Properties (b) Temperature rise (c) Short time withstand current (d) Short circuit breaking capacities (e) Operational Performance capability. (f) Overload Performance (g) Tripping Limits and Characteristic : The purchaser reserves the right to demand repetition of some or all the type test in the presence of the purchaser s representative. For this purpose the bidder may quote unit rates for carrying out each type test. For any change in the design/type already type tested and extra cost in case. If the equipment has not been type tested earlier, the entire type test as per relevant standards shall be carried out by the successful bidder in the presence of purchaser s representative without any extra cost. Signature And seal of Bidder Page 16 of 42

17 : Acceptance and routine tests : All acceptance and routine test as stipulated in the relevant standards shall be conducted at the place of manufacturer in presence of Purchaser s representative without any extra cost : Immediately after finalization of the programme of type/ acceptance/ routine/ testing the supplier shall give two weeks advance intimation to the purchaser to enable him to depute his representative for witnessing the tests : No equipments shall be dispatched before all tests and inspection have been carried out unless otherwise instructed by the purchaser : INSPECTION DURING MANUFACTURING : The inspection may be carried out by the purchaser at any stage of manufacture. The successful bidder shall grant free access to the purchaser s representative at a reasonable time when the work is in progress. Inspection and acceptance of any equipment under this specification by the purchaser shall not relieve the supplier of his obligation of furnishing equipment in accordance with the specifications and shall not prevent subsequent rejection if the equipment is found to be defective : The supplier shall keep the purchaser informed well in advance, about the manufacturing programme so that the arrangement can be made for inspection : The purchaser reserves the right to insist for witnessing the acceptance routine testing of bought out items. Signature And seal of Bidder Page 17 of 42

18 : QUALITY ASSURANCE PLAN : The bidder shall invariably furnish along with his offer the quality assurance plan adopted by him/his sub-supplies in the process of manufacturing all major equipment/component : Precaution taken for ensuring usage of quality raw materials and subcomponents shall be stated in the quality assurance plan : The bidder should specifically express their consent to accept additions, revisions to their quality assurance plan to meet the purchaser s requirements if needed. The final quality assurance plan to be adopted, with mutual consent, shall be decided after discussion with successful bidder : PERFORMANCE GUARANTEE : All equipment supplied against this specification shall be guaranteed for a period of 18 months from the date of receipt at the destination store center and 12 Months from the date of installation. However any engineering error, omission, wrong provision, equipment failure etc., if found during actual commissioning of the equipment shall be attended by the supplier free of cost : DEVIATIONS No deviations to this specification shall be acceptable unless specifically indicated in the offer in the relevant schedule. All deviations shall be clearly spelt out by the Bidder and the price implications thereof. Bidder must furnish List of Technical Deviations mentioning the specification clause nos. against which deviations have been sought for. Compliance with this specification will be taken for granted in absence of any specific mention of deviations in the said list of deviations. Any implied deviation or any deviation mentioned elsewhere in the offer shall not be considered. GSECL at their discretion will decide regarding acceptance of deviation looking to standard and project requirement. Signature And seal of Bidder Page 18 of 42

19 : DOCUMENT SUBMISSION : All drawings/documents / Test Reports submitted by supplier shall be having sufficient detail to indicate the type, size, arrangement, weight (as applicable),the external connections, fixing arrangements required, the dimensions required for installation and interconnections with other equipment and materials, clearances and spaces required between various portions of equipment and any other information specifically requested : Drawings / Documents / Test Reports submitted shall be signed by responsible representatives of the Bidder and all drawings shall be of A-3 size. (297mmX420 mm ) All dimensions on drawings shall be in Metric Units, unless otherwise specified. The details in the drawings shall be in English language only : In addition to the information provided on drawings, each drawing shall carry a revision number, date of revision and brief details of revisions carried out. Wherever any revision is carried out, correspondingly revision number must be updated. All revisions carried out shall be highlighted on the drawing and a separate sheet furnished stating the reasons for such revision. A note stating drawing is generally revised is not acceptable : Drawings submitted by the Bidder for approval will be checked / reviewed by the Purchaser and comments, if any, on the same will be conveyed to the Bidder. It is the responsibility of the Bidder to incorporate correctly all the comments conveyed by the Purchaser on the Bidder s drawings. The drawings, which are approved with comments, are to be resubmitted to the Purchaser for purpose of records. Such drawings will not be checked / reviewed by the Purchaser to verify whether all the comments have been incorporated by the Bidder. If the Bidder is unable to incorporate certain comments in his drawings he shall clearly state in his forwarding letter such noncompliance along with valid reasons and justification : Any work performed or material ordered by the Bidder prior to receipt of drawings stamped Approved with comments as noted by the Purchaser shall be at the risk of the Bidder. After print of any drawing has been returned Approved, the Bidder may release the parts covered by the drawing, for production / construction. Signature And seal of Bidder Page 19 of 42

20 : Reproducible, where called for in the Drawing Submission Schedule, shall be submitted after the approval of drawings. These should be of good quality and capable of producing clear and legible prints : Upon completion of the installation, the Bidder shall furnish a complete set of drawings on reproducible tracing film on which the Bidder shall make in a neat and accurate manner, a complete record of all changes and revisions to the original design, as installed in the completed work. These drawings shall be submitted to the Purchaser : Drawings prepared by the Bidder and approved by the Purchaser shall be considered as a part of the Contract Specification. However, examination and approval of the drawings by the Purchaser shall not relieve the Bidder of his responsibility for engineering, design, workmanship, materials and construction under the Contract : If, at any time before the completion of the work, changes are made necessitating revision of approved drawings, the Bidder shall make such revisions and proceed in the same routine as for the original approval : The drawing and documents which are not subject to approval shall be stamped FOR INFORMATION. However, the Purchaser shall reserve the right to comment : The Bidder shall prepare and submit to the Purchaser, operation and maintenance manuals in accordance with the Purchaser s requirements and in sufficient detail, for the Purchaser to get familiarized with the equipment and to enable him to operate, maintain,dismantle,reassemble, adjust and repair the equipment in a safe and efficient manner. O&M Manual shall contain i) Vendor Contact Details ii) Storage Instruction iii) Erection & Commissioning Instruction iv) Operating Procedure /Instruction and Maintenance Schedule v) List of Bought out component & sub vendor s addresses vi) Technical Data Sheet vii) Leaflets of Bought Out component vii) Drawings etc : A separate section of the manuals shall be devoted to each size/ type of equipment and shall contain a detailed description of construction and operation, together with all relevant pamphlets, catalogues, Signature And seal of Bidder Page 20 of 42

21 drawings and a list of parts with procedure for ordering spares. Maintenance instructions shall include checking, testing and replacement procedures to be carried out to ensure trouble-free operation : All documents including drawings, data sheets, erection and commissioning manuals, O & M manuals shall be provided on electronic media viz. CD s. Each electronic media shall be of high quality and suitable for long-term storage. The reproduction from media shall be of good quality : DRAWINGS / DATA / DOCUMENTS TO BE SUBMITTED BY BIDDER ALONGWITH THE BID : As a minimum, the bidder shall furnish the following in two sets failing which the bids shall be rejected. (a) (b) (c) (d) (e) (f) (g) (h) (i) Typical general arrangement drawing of the equipment showing overall dimensions. Typical schematic drawing in respect of Air circuit breaker /scheme offered Catalogues for equipment and fittings & accessories Operation & Maintenance Manual. Schedules as per Section III. Quality assurance plan Type test reports of similar rating equipments offered. Experience certificates of supply of identical types of equipment List of sub-vendors for purchaser s approval : DRAWINGS / DATA / DOCUMENTS TO BE SUBMITTED BY SUCCESSFUL BIDDER : After issue of detailed purchase order, the successful bidder shall submit within four weeks, four sets of complete drawings along with detailed bill off material for approval. In normal practice, the documents submitted for the approval will be commented upon or approved if in order, within 15 days from the date of receipt of the same : Before dispatch of equipments to consignees, the supplier is required to submit sets of following drawings / documents in suitable files. There shall be such four sets per equipment and shall be forwarded to (a) Three Signature And seal of Bidder Page 21 of 42

22 sets to consignee before dispatch of equipment and ( b) One set with equipment a) Control schematics and wiring diagrams. b) Operation and maintenance manual. c) Commissioning manual. d) Catalogues for all bought out items. The manuals and test reports should be submitted in bound form suitable for long storage with the necessary information printed on the cover page as well as back for easy traceability. The documents not submitted in the above manner will not be accepted. All Erection, operation & maintenance manuals & drawings shall be furnished in reproducible form (CDs) also : DEMONSTRATION : During technical scrutiny of the bid purchaser may ask to give demonstration of offered circuit breaker. The bidder shall demonstrate the same free of cost within two weeks of intimation from purchaser for verifying its functions, features accuracies etc. The circuit breaker which don t meet requirements, don t function as per GTP will not be accepted : PACKING AND TRANSPORT : All equipment/material shall be suitably packed for transport, carriage at site and outdoor storage during transit. The contractor shall be responsible for any damage to the equipment during transit due to improper and inadequate packing. The cases containing easily damageable material shall be very carefully packed and marked with appropriate caution symbols i.e. `FRAGILE `HANDLE WITH CARE, `USE NO HOOK etc. The contents of each package shall bear marking that can be readily identified from the package list and packing shall provide complete protection from moisture, termites and mechanical shocks etc : Wherever necessary proper arrangement for attaching slings for lifting shall be provided and all packages clearly marked with gross weight, signs showing `UP and `DOWN sides of boxes, contents of each package, order no. and date, name of the plant of which the material in the package forms part of and any handling and unpacking instructions considered necessary. Any material found short inside the intact packing Signature And seal of Bidder Page 22 of 42

23 cases shall be supplied by the manufacturer/supplier without any extra cost : Bidder shall ascertain, prior to shipment, from concerned authorities, the transport limitations like weight and maximum allowable package size for transportation. Fragile material such as relay cases, Instruments and other glass material shall be carefully covered with shock absorbing protective materials, such as thermocol, silica gel or equivalent moisture absorbent material in small cotton bags shall be placed inside the packing wherever necessary : Each consignment shall be accompanied by a detailed packing list containing the following information. a) Purchase order reference. b) Name of consignee c) Details of consignment d) Destination e) Total weight of consignment f) Handling and unpacking instructions. g) Bill of materials indicating contents of each package h) Sign showing upper/lower side of the crate : TRAINING : The successful bidder shall be required to provide facility for in-plant training, at no extra cost to the purchaser s four engineers to be nominated by the purchaser for a period of three days at his works, where the equipment offered shall be manufactured. The training shall cover familiarization with manufacturing and assembly techniques, procedures of installation, testing, commissioning, operation, maintenance and trouble shooting on the circuit breaker : If the circuit breaker offered, is being designed and manufactured in collaboration with any other manufacturer, the supplier shall provide facilities for the in-plant training in the collaborators works : In case of training within India, the to and fro travel expenses, lodging and boarding charges as well as allowances for out of pocket expenses in Signature And seal of Bidder Page 23 of 42

24 respect of the trainees, shall be borne by the Purchaser. However, the supplier shall provide suitable facilities for lodging and boarding as well as to and fro transport to place of training from the hotel/guest house : The programme of the training shall be mutually discussed and finalized by the purchaser with suppliers : SUPERVISORY INSTALLATION & COMMISSIONING : The bidder shall depute their Engineer, technician to the site for carrying out the retrofitting work, testing and commissioning of circuit breaker, schemes etc., as per clause : SCHEDULES : The bidder shall fill in the schedules indicated in Section iv which form part of the bid specification and offer. If the schedules are not submitted duly filled in with the offer, the offer is likely to be rejected : GUARANTEE FOR MAINTENANCE SPARES AND SERVICES The bidder shall guarantee for supplying maintenance spares and services as well as repairing of circuit breaker for a period of the life expectancy of 25 years. Signature And seal of Bidder Page 24 of 42

25 SECTION : II ANNEXURES CONTENTS Sr. No. DESCRIPTION PAGE NO. I ANNUAL MANUFACTURING CAPACITY 26 II SCHEDULE OF REQUIREMENTS AND DESIRED 27 DELIVERY III LIST OF STANDARDS. 28 IV DETAILS OF EXISTING CIRCUIT BREAKER 30 Signature And seal of Bidder Page 25 of 42

26 ANNEXURE I ANNUAL MANUFACTURING CAPACITY Sr. No. 1 2 Product Annual manufacturing capacity (In multiple of bid quantity)_ Air Circuit breaker 5 Signature And seal of Bidder Page 26 of 42

27 ANNEXURE II SCHEDULE OF REQUIREMENTS AND DESIRED DELIVERY Sr. No. [1] [2] Description Of Material Supply of 415V, 2500 Amp, Air Circuit Breaker (ACB), 3- pole, Electrically Operated Draw Out (EDO) Type as per specification Retrofitting of above 415V, 2500 Amp, Air Circuit Breaker (ACB), 3-pole, Electrically Operated Draw Out (EDO) Type, in existing panel of TMG make LT Breaker Tender Qty. 12 Nos. 12 Nos. (Shall be furnished on line price bid) Signature And seal of Bidder Page 27 of 42

28 ANNEXURE: III LIST OF STNDARDS Sr.No. Standard Title no. 1. IS Specification for LV switchgear and control gear. (Part-1 to 4) 2. IS 375 Making and arrangement for switchgear, busbars, main connections and auxiliary wiring. 3. IS 2516 Alternating current circuit breaker 4. IS 3202 Code of practice for climate proofing of electrical equipment. 5. IS 3427 Metal enclosed switchgear and control gear 6. IS 4237 General requirement for switchgear and control gear for voltages not exceeding 1000V. 7. IS 8623 Specification for LV switchgear and control gear assemblies. 8 IS 4237 General requirements for switches and control gear for voltages not exceeding 1 kv. 9. IS 375 Marking and arrangements for switch gear, bus bars, main connections and auxiliary wiring. 10 IS 2147 Degree of protection for cubicles 11 IS 6875 Control switches (LV Switching devices for control and auxiliary circuits) 12 IS 5 Colour for ready mixed paints and channels. 13 IS 1554 Part-I, 1988 PVC insulated cables up to and including 1000 volts. 14 IS 9224 HRC Cartridge fuse links. Part- II 15 IS 6005 Code of practice for phosphating iron and steel 16 IS-5578 Guide for making of insulated conductors. 17. IS Guide for uniform system of marking and identification of conductors and apparatus terminals. 18 IS 4064 Normal duty air break switches and composite units of air break switches (Part I&II) and fuses for voltages not exceeding 1000A. 19 IS 2206 Fuses. 20 IS 694 PVC Insulated cable for working voltage up to & including 1100 volt. Signature And seal of Bidder Page 28 of 42

29 Latest IEC Standards: Sr.No. Standard no. Title Electromagnetic Compatibility type test: 1. IEC , Class-III, MHz burst disturbance 2. IEC , Class-III IEC , Class-III Electrostatic discharge Direct application Indirect application 3. IEC , Class-A Fast transient disturbance 4. IEC-, Surge immunity test 5. IEC , Class-A Power frequency immunity test 6. IEC , Class-V Power frequency magnetic field test 7. IEC Radiated electromagnetic field disturbance 8. EN Radiated electromagnetic field disturbance 9. IEEE/ANSI/C Radiated electromagnetic field disturbance 10. IEC Conducted electromagnetic field disturbance 11. IEC Radiated emission Insulation tests: 1. IEC Dielectric test Impulse voltage test Insulation resistance Environmental tests: 1. IEC Cold test, Storage test 2. IEC Dry heat test 3. IEC Damp heat test, steady state 4. IEC Damp heat test, cyclic CE compliance 1. IEC Immunity 2. IEC Emissive Test 3. EN Low voltage directive Mechanical tests 1. IEC Vibration 2. IEC Shock and bump 3. IEC Seismic Other 1. IEC Specification for LV switchgear and control gear. 2. IEC-337 & Energy meters, control switches (LV Switching devices for control and auxiliary circuits) 3. IEC Electrical heat transient bursts. 4. IEC 870 Communication Standards IEC-297 Part 1-3 Dimensions of mechanical structures of the 482.6mm (19) series. Signature And seal of Bidder Page 29 of 42

30 ANNEXURE-IV Details of Existing Circuit Breaker Make: Tata Merlin and Gerin Ltd. Type : DS 41 In : 2500 A Short time I therm : 50 ka 1 Sec. Breaking capacity : 70 ka Making capacity : 140 ka Electrically & mechanically operated spring charging mechanism Qty of Installation to replace :- 12 Nos. Condition :- Working Signature And seal of Bidder Page 30 of 42

31 SCHEDULES CONTENTS Sr. No. DESCRIPTION PAGE NO. 1.0 Prices and Delivery(Un priced) General Particulars of Bidder Guaranteed Technical Particulars Deviation from Technical Specifications Performance and Experience Details Largest Quantity order executed List of Documents submitted with the Bid. 42 Signature And seal of Bidder Page 31 of 42

32 SCHEDULE: 1 Prices and Delivery (This shall be furnished with the price bid filled in with prices and unpriced shall be furnished with the Technical bid) Sr. No. [1] [2] Description Of Material Supply of 415V, 2500 Amp, Air Circuit Breaker (ACB), 3- pole, Electrically Operated Draw Out (EDO) Type as per specification Retrofitting of above 415V, 2500 Amp, Air Circuit Breaker (ACB), 3-pole, Electrically Operated Draw Out (EDO) Type, in existing panel of TMG make LT Breaker QUANTITY IN NOS Offered Tender Qty. Qty. 12 Nos. 12 Nos. Signature And seal of Bidder Page 32 of 42

33 SCHEDULE - 2 GENERAL PARTICULARS OF BIDDER 1 Name of Bidder with registered office address 2 Bidder s proposal number and date 3 Telegraphic / Telex Address 4 Telephone No. 5 Fax No. 6 E Mail 7 Name and Designation of the Official of the Bidder to whom all reference shall be made 8 Project organisation chart showing staffing, furnished? 9 List of important personnel with brief curriculum vitae, furnished? Yes / No Yes / No Signature And seal of Bidder Page 33 of 42

34 SCHEDULE 3 GUARANTEED TECHNICAL PARTICULARS (TO BE FILLED IN BY THE BIDDER -FURNISH WITH TECHNICAL BID) Sr. No. The GTP is to be filled up in this format and, to be submitted in duplicate along with the offer. This is intended for speedy comparison of various bidders GTP. The Bidder shall fill in the particulars against appropriate items in respect of each rating and type of equipment offered in the broad categories listed below. GSECL - UKAI THERMAL POWER STATION Guaranteed Technical Particulars for 415 V Air Circuit Breaker Vendor s Data / Confirmation Particular 2500 Amp. ACB 1 Name of Manufacturer 2 Type - Designation Complete Model No. offered 3 Confirming Standard 4 No. of Poles 5 Rated Operational Voltage Ue 6 Rated Frequency 7 Rated Insulation Voltage Ui 8 Rated Impulse withstand voltage Uimp Insulation level of the breaker (a) One minute dry withstand voltage (KV rms) 9 (b) One minute wet withstand voltage (KV rms) (c) Impulse withstand test voltage (KV peak) Temperature (a). Ambient temperatures used for design º C 10 (b).maximum rise of temperature over ambient temperature (10- a) for current rating (0C) 11 Rated continuous Current at 40 C 12 Making capacity (KA peak), Icm( at voltage 13 Rated service short circuit breaking capacity Ics 14 Rated Ultimate short circuit breaking capacity Icu 15 Rated Short time withstand current and short time delay Icw for 1 Sec. 16 Utilization Category 17 Power loss at rated current, Watts Signature And seal of Bidder Page 34 of 42

35 18 Breaker Closing Time ms Breaker Opening Time ms 19 (a) On Fault (b) With Rated current 20 Contact Resistance 21 Rated operating duty Allowable No. Of Operations -cycle (a) Mechanical Operation 22 ( without maintenance) (b) Electrical Operation ( without maintenance) 23 Maximum No. Of Operations on fault without inspection Nos. of operations, the circuit breaker is capable of performing without replacing/reconditioning of contacts (a) At 50% rated current 24 (b) At 100% rated current (c) At 50% breaking capacity (d) At 100% breaking capacity Suitability for Isolation and safety interlocks with TEST, 25 SERVICE, ISOLATED position of the breaker YES /NO 26 Rated control circuit voltage of control device 27 Conforming IP code 28 Pollution degree / Material group CB Operation counter Provided as standard accessory 29 YES/NO Phase segregation barriers Provision available YES/NO 30 (a) between upper & lower power connection (b) Between phase Minimum clearance in air (a) Between phase (live parts) mm 31 (b) Between live part and earth mm (c) Centre distance between phase mm 32 No. of Auxiliary contact. Provision of Under Voltage Release YES/NO (a) Sensing of the Under Voltage release 33 (b) Setting range of the Under Voltage release (c) Closing interlock with U/V release (d) Other Features of the Under Voltage release Signature And seal of Bidder Page 35 of 42