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| 1 | M&L in replacement of outdoor end terminal joints cold shrinkable Suitable for HT 11000V (Earthed), XLPE insulated armoured Heavy duty under ground cable including joint kits and labour complete for making joints suitable for aluminium conductor cable of cross sectional area 120 Sqmm 3 Core complete all as specified and as directed. |
| 2 | Supply, laying , jointing and testing in replacement of HT XLPE cable 120 Sqmm 3 core, 11000 volt screened, PVC bedded \\"Earthed grade\\" insulated bedded, galvanised steel (Heavy duty) strip armoured with aluminium conductor 11 KV pressure earth system confirming to IS-7098(Part-I) 1977 and part-II of 1985 laid in pipe /ducts/trenches, under floor and road or fixedd to wall etc complete cross-sectional area of cable 120 sqmm 3 corecomplete all as specified and as directed. |
| 3 | S&F 80 mm bore galvanised iron pipe light grade with all fittings laid across road, in trenches or across PCC drain, along electric pole or floor/wall for cable protection with suitable size of MS clamps, nuts, botls and wahsers complete all as specified and as directed. |
| 4 | M & L for aluminium strip 25x3.15 mm with base insulators and screws etc fixed on wall/ floor for extension of earthing lead. Complete all as specified and as directed. |
| 5 | M&L Cross-arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washer, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated/ directed and applying two coat of aluminium paint over a coat of red oxide primer complete all as specified and as directed. |
| 6 | S&F in replacement 33 KV single phase out door oil cooled CT of ratio 100/5-5 Amp class 1.0 – 5P10 burden 15 VA insulation level 70 KV/170 KV as per IS-2705 complete all as specified and as directed. |
| 7 | S&F in replacement 33 KV single phase out door oil cooled PT of ratio 33 KV/rt 3/110V/rt 10V/rt 3 Class 0.5-3, Burden 50 VA – 50 VA, insulation level 70/170 KV., voltage factor 1.2 Cont and 1.9 for 30 Sec, conforming to IS-3156 complete all as specified and as directed. |
| 8 | S&F in repalement 33 KV 400 Amp isolator out door type, three phase, double break, centre rotating type suitable for manual operation. Each pole of isolator shall be provided with two sets of contacts to be poperated in series and the moving contact blades shall rotate in horizental plane and galvanised steel frame operating pipe of 25mm bore medium grade GI pipe suitable for operation while standing on ground for 3 phase complete all as specified and as directed. |
| 9 | S&Fin replacement lightning arrester expulsion type complete with all fitting transmission class, discharge cap 65 kilo amp 33000 volt complete all as specified and as directed. |
| 10 | Supply and laying synthetic rubber insulated mats 3 mm thick for voltage upto 33 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m complete all as specified and as directed. |
| 11 | Supply and laying in trenches or passing through pipe or layed on cable duct copper control cable of size 2.5 Sqmm 12 core PVC insulated armoured, electric cable with copper conductor 1100 volts grade complete all as specified and as directed. |
| 12 | Demolition of cement concrete of any description and in any position or not other wise spccificly provided for complete all as specified and as directed |
| 13 | M&L cement concrete 1:3:6 type C-2 using 40mm graded stone aggregates as in foundation, filling and mass concrete complete all as specified and as directed. |
| 14 | M&L 15 mm thick rendering in cement morter 1:4 on brick or concrete surface, surface finished even and faircomplete all as specified and as directed. |
| 15 | M&L Brick work with sub class 'B' bricks,old size brick, straight or curved on plan to any radius as in half brick wall, built in cement mortar 1:4 complete all as specified and as directed. |
| 16 | M&L for sand filling as in foundation of transformer including spreading and levelling complete all as specified and as directed. |
| 17 | Taking down existing BER Transformer of any type and capacity 3150 KVA from the existing platform including disconnecting all electric connections, transporting and depositing the Transformer to MES Store Yard including taking down Cable Box and demolition of existing platform of any size and description including use of necessary T & P and making good disturbed surfaces complete all as specified and as directed. |
| 18 | Supply , Installation , Commissioning of Outdoor type step down,copper wound, Power Transformer as per IS-2026 & IEC : 60076-1 :2000, 33/11KV, 3.15 MVA , ONAN, 3 phase , 50 Hz, double copper wound, core type with low loss, non ageing, high permeability, prime grade, CRGO core material M4 grade or better with BIS certification, perfectly insulated and clamped to minimise noise and vibration, Delta/star vector group DYn11, ON LOAD Tap changer on HV side to vary secondary voltage from (+) 5% to (-) 10% in 12 steps @ 1.25%. The OLTC shall conform to IS 8468/IEC 60214 (Part 1& 2). The 33KV bare condensor type bushing oil filled shall be provided and 11 KV cable box. Thermal sensors and necessary arrangment to get the data on SCADA on Modbus protocol shall be provided.The insulating oil shall be unused inhibited Type A, High Grade conforming to IS 335/ IEC-60396-2020. The transformer shall be designed with particular attention to the suppression of voltages especially the third and fifth harmonic so as to eliminate wave form distortion and any possibility of high frequency disturbances, inductive effects or of circulating currents, between neutral points of different transformer stations reaching such a magnitude as to cause to interference with communication circuits. The transformer shall have following accessories and fittings :- |
| 19 | (i) Double float Reed type Buchholz Relay(gas operated) with shut off valves at both ends, complying with IS:3637 , 50mm, with two pairs of electrically separated contacts, one pair for alarm and other pair for tripping.The angle of inclination shall be 3 to 7 degree,(ii) Oil temperature indicator 150mm diameter for top oil temperature indication with angular sweep of 270°. Range of temperature should be 0-150°C with accuracy of ±1.5% (or better) of full scale deflection, with alarm and trip contact.,(iii) Winding temperature indicator about 150mm diameter for measuring the hot spot temperature of each winding [HV, IV & Tertiary (if applicable)]. It shall have angular sweep of 270°. Range of temperature should be 0-150°C with accuracy of ±1.5% (or better) of full scale deflection, with electrical contacts for alarm and trip contacts.,(iv) Sheet steel weather proof Marshalling box of IP -55 construction and shall have following load disconnect switch for incoming power supply from auxiliaries, wiring and termination individualy for Buchholz relay alarm for main tank, winding temp high alarm, oil temp high alarm, tank oil level low alarm, tap change incomplete alarm, wiring and termination individually of remote trip alarm,winding temp high trip,oil temp high trip,Buchholz relay trip or sudden gas and sudden oil pressure relay trip , Cubicle illumination lamp with door switch and space heater with thermostat and ON/OFF switch.,(v) Magnetic oil level gauge with low level alarm contact.,(vi) Pressure release valve (PRV) with trip contacts., |
| 20 | (vii) Conservator with oil filling hole with cap and drain plug and with built in diaphragm to avoid direct air contact with transformer oil & diaphragm rupture detection relay.Conservator tank shall be provided with two separate compartments( with partition barrier). One for main transformer tank and other for OLTC compartment.(viii) Magnetic Oil level indicator 150mm dia with minimum level marking.,(ix) Thermometer pockets with thermometer.,(x) Silica gel breather with silica gel,(xi) Air Release plug.,(xii) Lifting Lugs,(xiii) Earthing terminals,(xiv) Bi-directional Rollers- 4No,(xv) Anodized aluminum rating and diagram plate.,(xvi) Top filter valve,(xvii) Bottom drain -cum- filter valve.,(xviii) Jacking lugs,(xix) Insulation level KV Peak- HV-325KV and LV- 75KV,(xx) Insulation level (power frequency with stand) HV- 140KV, LV-28KV(xxi) System fault level 31.5KA at 33KV,(xxii) Single float Bucholz relay/oil surge relay with alarm contact for OLTC,(xxiii) No load losses and load losses at rated voltage and frequency- Not more than 40 KW, |
| 21 | (xxiv) % Impedence at 75 degree centigrade at rated current and frequency - not more than 7.15,(xxv) For electrical operation of OLTC from local as well as remote, motor operated mechanism shall be provided. The tap changer shall be provided with over-current protection in order to prevent the tap-change operation during a short circuit. The Local OLTC Drive Mechanism Box shall house all necessary devices meant for OLTC control and indication. The diverter switch or arcing switch shall be designed so as to ensure that its operation once commenced shall be completed independently of the control relays or switches, failure of auxiliary supplies etc. To meet any contingency which may result in incomplete operation of the diverter switch, adequate means shall be provided to safeguard the transformer and its ancillary equipment. The current diverting contacts shall be housed in a separate oil chamber not communicating with the oil in main tank of the transformer and the chamber shall be designed to withstand the vacuum. It shall be complete with the following: (a) A circuit breaker/contactor with thermal overload devices for controlling the AC Auxiliary supply to the OLTC motor,(b) Emergency Push Button to stop OLTC operation(c) Cubicle light with door switch,(d) Anti-condensation metal clad heaters to prevent condensation of moisture(e) Pad locking arrangement (or locking arrangement suitable for long term operation) for hinged door of cabinet,(f) All contactors relay coils and other parts shall be protected against corrosion, deterioration due to condensation, fungi etc.(g) The cabinet shall be tested at least IP 55 protection class., |
| 22 | (xxvi) Remote tap changer control panel (RTCC),(xxvii) Automatic voltage regulator relay (AVR). It shall be supplied together with the timer and under voltage relay.Make: Siemens/ABB/BHEL/ Schneider(xxviii)Supplying, installation, testing and commissioning of indoor type control and relay panel for the protection and operational working of out door 33KV/11KV , 3.15 MVA transformer and 11 KV feeder all as directed and specified by E-in-Charge . It must be manufactured by OEM of transformer or its authorised system integrator (having type test report), made up of 2mm thick MS sheet, consisting of separate vertical stationary front panel with equipment mounted thereon & having wiring access from the rear. Each cubical assembly shall be provided with double leaf doors as rear having handles with built in locking facility.The height of the panel shall not be more than 2250 mm .The control & relay board shall be on panel at front. It is responsibility of the bidder to ensure that the equipment specification and unspecified complimentary equipment required for completeness of protection & control schemes be properly accommodated in the panels. Test of relays shall be carried out based in general guide lines specified . The drg of panel shall be submitted for Approval of GE along with drg of power transformer. It shall consists of not limited to following certain items but other items required for functional requirement of panel and its acessories |
| 23 | a. BCU C264 / Micom P3F Rack 4U, 80 TE, IP20 front bus mother board 80TE Power supply Vnom: 24 VDC and 230VAC / Nominal wetting voltage for 2 DI: 24 VDC - 2 serial ports CPU275 (Type 4), with 2*Ethernet RJ45, 128Mb FlashMem, 256Mb SDRAM, 50 ppm Oscill Front Face with LCD & LEDs (80TE) detachable up to 5m 16 DI 1 ms, 24 VDC 10 DO Board (8NO+2NO/NC)4I and 5U direct acquisition board from CT/VT Ration 5 or 10 Amp b. Numerical relay as IEC 61850 with following features:- Two winding differential , overload Protection with 3 Nos O/C elements with setting range (50-200%)of 1A, E/F protection with setting range (10-40%) of 1 A, REF protection, over flux protection over volatge and under voltage protection tripping logic disturbance recorder,LBB (Break failure protection) c. Supervision Relay - (AC Supply Supervision) 200ms |
| 24 | m. Multi function meter, CT/PT SEC: 1A/110V CT/PT Primary: User programmable Multi function meter 3phase 3 element 4 wire, Class: 0.5, CTR: user programmable/1A, PTR: user programmable/110V, comm: MODBUS via RS485 , auxilary voltage :(24 V) DC n. Analog Ammeter - 96 mm sq , Class :1.0 o. Voltmeter selector switch, 6 position (RY-YB-BR-RN-YN-BN) p. Auxillary Contractor 24 VDC, CAD32MD COIL :24 V DC contacts : 3 NO & 2 NC contact rating : 10 Amp q. Auxiliary Relay - with S/R contacts & H/R flag.Operating time<20ms. (4 Contacts ), Available ratings: 24 V DC Miniature relay, Auxillarycontacts: 4(C/O), Auxillary supply 24V DC r. Relay test block (s) LRS/LBB IN/OUT SWITCH LR-2P-20W-SP-LA-25A - TYPE: Stayput, 20 WAYS, 2 positions lockable at all positions, circuit label :local * remote, handle: Pistol , 4 + 4 Contacts, Non-Lockable selector switch 8 ways, 2 positions, stayput, with pistol grip handle t. Auxillary plug in type relays with change over contacts , high speed trip relay , MCBs, Electric hooter 24 V DC, Digital multi function meter to show three phase current and voltage, power factor, frequency, three phase energy with SCADA compatable, LED indicator lamps and with standard parameters. illumination lampwith ON/OFF with door switch, Space heater with thermostat and toggle switch, Earth bus and terminal blocks,Three pin 15A socket with ON/OFF switch complete all as specified and directed Please Enable Macros to View BoQ information |
| 25 | m. Multi function meter, CT/PT SEC: 1A/110V CT/PT Primary: User programmable Multi function meter 3phase 3 element 4 wire, Class: 0.5, CTR: user programmable/1A, PTR: user programmable/110V, comm: MODBUS via RS485 , auxilary voltage :(24 V) DC n. Analog Ammeter - 96 mm sq , Class :1.0 o. Voltmeter selector switch, 6 position (RY-YB-BR-RN-YN-BN) p. Auxillary Contractor 24 VDC, CAD32MD COIL :24 V DC contacts : 3 NO & 2 NC contact rating : 10 Amp q. Auxiliary Relay - with S/R contacts & H/R flag.Operating time<20ms. (4 Contacts ), Available ratings: 24 V DC Miniature relay, Auxillarycontacts: 4(C/O), Auxillary supply 24V DC r. Relay test block (s) LRS/LBB IN/OUT SWITCH LR-2P-20W-SP-LA-25A - TYPE: Stayput, 20 WAYS, 2 positions lockable at all positions, circuit label :local * remote, handle: Pistol , 4 + 4 Contacts, Non-Lockable selector switch 8 ways, 2 positions, stayput, with pistol grip handle t. Auxillary plug in type relays with change over contacts , high speed trip relay , MCBs, Electric hooter 24 V DC, Digital multi function meter to show three phase current and voltage, power factor, frequency, three phase energy with SCADA compatable, LED indicator lamps and with standard parameters. illumination lampwith ON/OFF with door switch, Space heater with thermostat and toggle switch, Earth bus and terminal blocks,Three pin 15A socket with ON/OFF switch complete all as specified and directed Please Enable Macros to View BoQ information |
