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| 1 | NOTES :The bidders/contractorsare advised to read tender document & all corrigendum/ amendments and General conditions of contracts before entry/quoting the rates. |
| 2 | Supply, Installation, testing & commissioning floor mounted, 6.6 KV, 3 Ph, 50Hz indoor type Ring Main Unit (RMU) with 3 wayconsisting of 02 Nosas incoming motor operated load break switches (LBSs)(SF 6) and 01 Nooutgoing Vacuum circuit Breaker (VCB) with electrical closing and tripping along with disconnector and earthing switches with self powered O/C ,E/F relay (RS485) with Bus PT Metering module battery charger along with batteries required for Electrical operations of RMUwith over load and earth fault complete with necessary base frame for fixing switch gear in existing indoor substation and including compatible to SCADA system with all standard accessories as under and as per manufacturer\"s recommendation and complete all as per specified and as directed :- (i) The Package scope of work shall include design, manufacture, testing, delivery installation commissioning Ring Main Units capable of being monitored and controlled by the SCADA/DMS and also manually operated RMUs. This also includes supply of relevant 6.6 kV cable termination kits including the jointing as per this tender specification.Cont...... |
| 3 | (ii) Where relevant, the RMU scope of work shall be coordinated with the work to be carried out like providing of UG cable under the project’s other construction packages. (iii) Each RMU shall include its own power supply unit (including auxiliary power transformer, batteries, and battery charger), which shall provide a stable power source for the RMU. In case of remote operated RMUs, the same will be connected to the FRTU required will be procured by utility later.(iv) Each new RMU shall be equipped with main-line load break switches and a fault passage indicator (FPI). Furthermore, to protect each of its lateral / transformer feeders, it shall be equipped with a corresponding set of circuit breakers and self-powered numerical relays. The RMU shall include potential-free contacts so as to connect to SCADA/DMS via FRTUs in case of remote operated RMUs, so as to:(v) Monitor and control the open/closed status of the RMU circuit breakers and load break switches.(vi) Monitor the local/remote position of RMU manually-operated switches that can be used to enable and disable remote monitoring.(vii) Monitor the health of the power supply, which will include battery failure and low voltage indications.(viii) Monitor the open/closed status of RMU earthing switches. (ix) Monitor for low SF6 gas pressure indication in case of SF6 Breaker.(x) Monitor for circuit breaker relay operations.(xi) Monitor for indication of main-circuit fault detected by the RMU’s FPI.(xii)Power supply indications including battery failure and voltage alarms, (xiii) FPI reset control. Note :- (i) RMU shall be fixed on existing foundation , in case any existing foundation are not fitfor new equipment, same shall be construction by contractor as per manufacturers\" recommendation and cost of the same shall deemedto be included in the quoted rate. Accordingly bidder/ tenderer is advised to visit site before quoting his offer and nothing will be paid on this account. (ii) The earthing shall be measured and paid for under respective items of Schedule \"A\" |
| 4 | Supply , install, testing and commissioning ofindoor typevacuum circuit breakers Panel having oneVCBs, forcapacity6.6 KV, 400 Amp,3 Phase, 3 wire,50 Hz,having a fault level of 250 MVA at 6.6KV , 13.1 KA breaking capacitytotally enclosed singlebus bar for each phase, floor mounting, metal clad, Indoor extensible typeflush fronted,Draw out type,horizontal/vertical isolation typewith Electrical and Mechanical interlock and automatic safety shutter gear including padlocking arrangement, isolation plugs, assambly of 3 vaccum interrpupters, with epoxy support insulations and self - aligning finger type isolating contacts, truck having integral racking with necessary interlocks ( for insertion and withdrawal of VCB), manual and automatic motor charged independent closing/ tripping spring , trip free operating mechanism withclosing and tripping push buttons and mechanical breakere ,includinginbuild battry back up system & all standard fitting and accessories of following specification For Incoming, Out going and Bus coupler (A) Specification forVCBs(i)Bus bar chamber with 3 phase copper bus bar 1000 Amp rating duly insulated -01 set ( set of three). Cont.... |
| 5 | Cont...(ii)Electrical trip coil 110 V DC - 1 No (iii) Electricalshunt coil110 V DC – 01 No(iv) CT Chamber incorporating 3 Nossingle phase rasincast current transformer ratio 100/50/5-5 class 1.0 for metering & class 5P10 for protection and burdon 30 VA -1 Nos(v)3 Phase, 3 Limbdraw out type bus connected Epoxy potencial transformer, ratio 6.6 KV/√3/110V/√3 AC acuuracy 1.0, burdon 200 VA-01 No.(vi) Digital ammeter0 to 100 Amp,( 100% of CT ratio)for3 phase -01 No.(vii)Digital voltmeter rating 0 to12 KV, for 3 phase- 01 No(viii) DIGITAL Load manager for amps, volts, KW, KVA, KVAR, and PF type QUASER of Enercon/ L&T- 01 N, (ix)Three phase over current and earth fault relay digital numerical auxillary supply 20-110V AC/DC CT out put contacts 2 No + NC, rating-5, O/C Is= 20-200% in step of 5% E/F Os=5-80% in step of 5%. (x)Auxiliary relay with 4 N/O & N/C - 1Nos, (xi) TNC switch and LR swich - 1Nos ,(xii) Heat control switch- 1 Nos (xiii) RYB, ON/Off ,spring charged and discharged & VCB trip indications- 1 set , (xiv ) Spece heater with thermostate - 1 No, (xv)Operating counter - 1 No , (xvi) Rear cable box suitable for 185 Sqmm 3 core XLPE cable - 2 Nos, (xvii) Spring charging motor with starter 230 v Ac-1 NoNote :- (i) VCB shall be fixed on existing foundation , in case any existing foundation are not fitfor new equipment, same shall be construction by contractor as per manufacturers\" recommendation and cost of the same shall deemedto be included in the quoted rate. Accordingly bidder/ tenderer is advised to visit site before quoting his offer and nothing will be paid on this account. (ii) The earthing shall be measured and paid for under respective items of Schedule \"A\" |
| 6 | Material and labour for disconnecting the electrical cable connection from existing HT OCB of 800/400 Amp Capacity of any make and Size complete as directed. |
| 7 | M& L for Earthing of machinery/ equipment installed at power house /substation, usinggalvanised steelearth plate eletcrode 600 x 600 x 6.3 mm thickas buried directlyin ground (earth pit not less than 3mtrbelow normal ground level connected to galvanised earth strip of size 32x6 mmby means ofbolts nuts,check nuts and washersat complete etc all as shownin electrical plate No-3 of SSR part-1 connected to earthing test point all as specified or indicated including PCC pit in PCC(1:3:6)type CI cast iron frame 50mm thick pre cast RCC (1:1½ :3) nominal mix cover slab reinforced with 8mm dia mild steel barincluding necessaryexcavation earth work in soft/loose soil and disposal of spoil to a distance n.exc 50mtr and funnel with watering pipe wire mesh GI protectionpipe 40mm bore including testing complete all as specified and directed by Engineer-in-Charge. (Note - Earthing lead and GI protection pipe beyond 7.5 mtr shall be measured and paid deparately) |
| 8 | Supply and fixing Galvanised Ironstrip 32 mm X 6 mm complete with saddles and fixing screws for fitting the stripcomplete all as specified and directed by Engineer-in-Charge. |
| 9 | Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 6000 volts grade,3 core ofsize 120 sq mmcomplete all as specified and as directed. (From Main receiving station 2 to Substation No 01 and interconnection with Ring Main Units and From Main receiving station1 to Substation No 03and interconnection with Ring Main Units) |
| 10 | Excavation in trenches not exc. 1.50m wide and n.exc.1.5m in depth for foundation ofcable trenches/ pole and etc and getting out in soft/loose soil complete all as specified and as directed. |
| 11 | Removing excavated materials (soils) to a distance not exc. 50m and depositing where directed at a levelnot.exc. 1.5m above starting point complete all as specified and as directed. |
| 12 | Returning, filling in , including spreading, levelling, watering and well ramming in layers not exceeding 25cm in soft/loose soil complete all as specified and as directed |
| 13 | Material and labour for Sand cushioning to the full width of trenches for protection of cables including punning down complete all as specified. Note :- Thickness of sand cushioning shall be the thickness after punning down. |
| 14 | Supply and laying un-reinforced precast concrete cable cover, class HVP, Type 1 with peak, size 300mm x 180mm x 40mmlaid flat dry, in trenches with width of the brick laid to the axis the of cable for protection of cable complete all as specified and as directed. |
| 15 | Supply and fix cable jointing kit for 6 KV grade cable for in door termination, cold shrinktype, joint complete with jointing material and accessories suitable for 3 core XLPE of 120 Sqmm armoured, Al conductor cable offollowing size:- |
| 16 | Supply and fix cable jointing kit for 6 KV grade cable for straight through cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 120 Sqmm |
| 17 | Material and labour for HDPE Pipes100 mm dia PN 10 all as specified and as directed by Engineer -in -charge . |
| 18 | Material and labour for PCC 1:4:8 type D2 40 mm graded aggregateComplete as directed by Engineer -in -charge . |
| 19 | Material and labour forroad cutting /removing the hard Standing/Pathfor layingof cablesof any sizecomplete all as specified. |
