Indian Institute Of Technology-IITB has published Tender For Providing Rising Main And Bus Bar Trunking / Cable Trays/ Cms For Oed, Mds And Aero Space Buildings In Iit Madras Premises. Submission Date for this Tender is 15-02-2023. Rising Mains Tenders in madras Tamil Nadu. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 08-Feb-2023 | Corrigendum | Financial Bid | 15-02-2023 |
| Sl. No. | Item Description |
| 1 | WIRING AND CONNECTED ACCESSORIES |
| 2 | Wiring for circuit/submain wiring along with earth wire with the following sizes of FRLS PVC insulated copper conductor, single core cable in surface /recessed medium class PVC conduit as required |
| 3 | 2 runs of 1.5 sq.mm and 1 run of 1.5 sqmm cable |
| 4 | 2 runs of 2.5 sq.mm and 1 run of 2.5 sqmm cable |
| 5 | 2 Runs of 6.0 sq.mm and 1 run of 6 sq.mm cable |
| 6 | Supplying and drawing of following sizes FRLS PVC insulated copper conductor single/ multi strand cablein the existingsurface/ recessed cable management system / casing capping/PVC /steel condiut as required. |
| 7 | 3 runs of 1.5 sq.mm |
| 8 | 3 runs of 2.5 sq.mm |
| 9 | 3 Runs of 6 sq.mm |
| 10 | Supplying and fixing of MK premium base & lid of NCT 1050type cable management system with required specials and accessories including end caps, flexible internal/external corners flat angles,Flat tee, joint cover wherever necessary with cable divider, required type of modular box etcas per the site requirements |
| 11 | DISTRIBUTION BOARDS |
| 12 | Supply, Installation, Testing and Commissioning of the following distribution boards shall be designed for 415V, 3Ph, 50Hz, 4 wire AC system sheet steel, dust and vermin proof suitable for wall mounting type (recessed) compartmentalized designed and fabricated as per standard OEM manufacture thickness CRCA sheet steel for main frame, folded sections and load bearing numbers , CRCA sheet steel for doors and covers with suitable knockouts for incoming and outgoing cable/ conduits provisions. body earthing terminals with powder coated painting , danger board,sign writing including minor civil works etc as required as per the technical specifications and schematic. |
| 13 | MAIN LIGHTINGDB |
| 14 | The double door type 6 Way TPN Compartmental Horizontal ( 7 Segment Phase Segregation ) MCB DB comprising of the following : |
| 15 | Incoming |
| 16 | 80A TPN 10kA MCB"C"Curve with all other required accessories – 1 No. |
| 17 | Outgoings |
| 18 | 63 A DP MCB – 3 Nos. as outgoing with 12 Nos 32 A SP MCB "C" Curve & 6 Nos 6A-10A SP MCB "C" Curve |
| 19 | With necessary tinned copperbusbars, interconnections, separate earth bus, separate neutral bus for each phases.The board shall be powder coated type fixed with concealed system in wall.The rate shall include necessary connected civil works like chipping, rough plastering etc. |
| 20 | SUB LIGHTING MCB DB |
| 21 | Double door type 8 Way SPNMCB DB comprising of the following : |
| 22 | Incoming |
| 23 | 32A DP MCB "C" Curve – 1 No. |
| 24 | Outgoings |
| 25 | 6A -10A SP MCB"D" Curve – 8 Nos. |
| 26 | POWER/AC/UPS MCCB DB |
| 27 | The double door type 12 Way TPN Vertical MCCB DB comprising of the following |
| 28 | Incoming |
| 29 | 125A 36kA 4P MCCB and all other required accessories – 1 No. |
| 30 | Outgoings |
| 31 | 63A TP MCB "C" Curve – 2 Nos. |
| 32 | 40A TP MCB "C" Curve – 2 Nos. |
| 33 | 16A TP MCB "C" Curve – 12 Nos. |
| 34 | With necessary tinned copper busbars, interconnections, separate earth bus & separate neutral bus.The board shall be powder coated type fixed with concealed system in wall.The rate shall include necessary connected civil works like chipping, rough plastering etc. |
| 35 | RISING MAIN, BUSBAR TRUNKING, TAP OFF BOXES,ETC. |
| 36 | Design, supply, Installation, testing & commissioning of Air insulated type following 3 phase 4 wire 400 V50 HzLT Aluminium busbar trunking system. The enclosure of thetrunkingshall befabricated out of Hot-galvanized sheet steel by atleast 0.8mm thickness and tested as per IEC62262. It shall be rigid and robust in construction , compact in size.Plug-in outlet with cover should be presentat regular intervals (1000mm) which ensures IP-55 as per IEC-529.All the run elements ( Straight Feeder, Elbows,etc ) are supplied complete with a factory fitted monobloc. The conductors should be spaced with plastic insulators reinforced with 20% Glass fibre. The insulators should have V1 self extinguishing degree (as Per UL94) and are in compliance with the incandescent wire test as per EN 60695-2-1. The rate should be inclusive of2 Nos. of 25 x 3 mm aluminium external earthing conductor through out the length and horizontal supportsor thread rod supports at 1200 mm interval ofthe BBT. |
| 37 | 315A 20kAAir insulated design bus trunking Indoor IP54. |
| 38 | End Feed unit with 4P 36A 250A MCCB with Rotarty handles and Spreader links along with On/Off/Trip indication lamps |
| 39 | 250A BBT End Cover |
| 40 | Plug in Box with 4P 36kA 63A MCCB with Rotary Handle and Spreader Links. |
| 41 | Plug in Box with 4P 36kA 125A MCCB with Rotary Handle and Spreader Links |
| 42 | Plug in Box with 4P 36kA 160A MCCB with Rotary Handle and Spreader Links |
| 43 | 400 A 30kAAir insulated design bus trunking Indoor IP54. |
| 44 | End Feed unit with 4P 36A 400A MCCB with Rotarty handles and Spreader links along with On/Off/Trip indication lamps |
| 45 | 400A BBT End Cover |
| 46 | Plug in Box with 4P 36kA 250A MCCB with Rotary Handle and Spreader Links. |
| 47 | Supplying and installation of following size of perforated painted with powder coating MS cable trays with perforation not more than 17.5%, in convenient sections , joined with connectors, suspended from the ceing or wall with necessary MS supports with painting including necessary civil works , bolts &nuts etc as required |
| 48 | 200 x 50 x 1.6mm |
| 49 | 300 x 50 x 1.6mm |
| 50 | 450 x 50 x 2mm |
| 51 | MV PANEL |
| 52 | Supply , Erection,Testing and commissioningof suitable size extendablefloor mounting cubical type followingLT Main Panel board suitable for 415V 3ph 4 wire 50Hz AC supply system fabricated in a compartmentalizeddesign from CRCA sheet steel of 2mm thick for frame works and cover with 3mm thick removable gland plate ,cleaning and finishing with 7 tank process for powder coating with siemens grey having extensible type TPN copper alloy busbar of suitable capacity as per the incomer ACB /MCCB/SDF ratingswith DMC/SMC busbar suppotrs with short circuit withstand capacity of 31MVA / 1Second , bottom base channel of 75mmX 50mm X 5mm. |
| 53 | BUS BARS |
| 54 | Bus bars will be electrolytic copper , air insulated , R,Y,B, N(Black) PVC sleeved capable of carrying full load currentfor all the 3 phases and neutral continiously. The current density of copper shall be designed for 1.2A per sqmm. The bus chamber should have proper air ventilators. |
| 55 | EARTHING |
| 56 | 2 separate run of 25 x 3 mm copper earth bus painted in green colour should be provided all along the panel and connected to the main grid. Interconnectios should be taken to metering chamber, MCCB"s, ACB"s, FSU"s etc sothat all current carrying components are effectively earthed. |
| 57 | ADDITIONALSCOPE OF WORK |
| 58 | The scope of work includes minor civil works like breaking of concrete floors ,construction of masonary trench ,and suitable MS "?" type channels for the proposed panel as per the instruction from the Engineer in Charge.The rate should be inclusive of removing of existing LTUG cable terminatinsup to 400 Sqmm from the panelor cable trench or excavated from earth . The cable should be re terminated ater completion of all the erection works.Necessary Panel drawings , QAP and GTP have to beapproved by the Engineer incharge before fabrication. |
| 59 | PANEL II (MSB) |
| 60 | Incomer |
| 61 | 630A TPN MCCB 36kA with micro processor based trip units ,front operated handle and with ON/OFF/TRIP indications-2 Nos . |
| 62 | Outgoing |
| 63 | 250A TPN MCCB 36kA with micro processor based trip units ,front operated handle and with ON/OFF/TRIP indications- 10Nos as out going |
| 64 | 630A copper bus bars for 3phases and neutral |
| 65 | 3 phase indication lamps with toggle switch-1set, microprocessor based digitalmulti function meter with communication port andthe facility for active and reactive power measurements -1set with required CTs and control fuses etc.Necessary Spreaders / extended copper bus bars of suitable rating with required holes should be provided for the cable and bus bar terminations.The handle should be pad lockable type in both ON/OFF positions.The work should be inclusive of providing interlocking arrangement for the 2 incomers and Bus couplerby providing 3 locks and 2 keys. |
| 66 | Removing of existingMV Panelsand4 or 3.5 Corealuminium armoured 6 sqmm to 240 sqmm LTUG Cable- Max 200mtrs ( approx)including all the cableend terminations and handed over to the Maintenace section in rolls as instructed by the Engineer incharge. The contractor should visit the site before coating. |
| 67 | LT UG CABLES AND TERMINATIONS |
| 68 | Supplying& Laying of following sizes PVC XLPE insulated alu. Conductor armored LTUG cable in a 40 mm to 100 mm dia HDPE DWC pipe in atrench of 50cm wide and 75cm depth including earth work excavation in all soils and sub soilsand back filling, consolidated in a regular interval of 25cm thick rammed and complying with standard specification. |
| 69 | 3.5c X 400 Sqmm Alu. AR. LTUG Cable |
| 70 | 3.5c X 150 Sqmm Alu. AR. LTUG Cable |
| 71 | Supply, Laying, Testing and Commissioningof the following sizePVC insulated and PVC sheathed/XLPE Power cable of 1.1KV grade Aluminium/Copper conductor armoured cables. Cables shall belaying on the cable trenches,cable tray,cable duct,and partially laid on wall/ceilingindoor/outdoor with suitable clamps & necessary fixing accessories etc. as required. |
| 72 | 3.5c X 240 Sqmm Alu. AR. LTUG Cable |
| 73 | 3.5c X 50 Sqmm Alu. AR. LTUG Cable |
| 74 | 4C x 4 Sqmm Cu. AR. LTUG Cable |
| 75 | Supplying and making end termination for following sizes aluminium / copper AR. LT UG cable using suitable brass compression gland ( single)with required Aluminium/ copper ferulles / socket and other jointing materials |
| 76 | 3.5c X 400 Sqmm Alu. AR. LTUG Cable |
| 77 | 3.5c X 240 Sqmm Alu. AR. LTUG Cable |
| 78 | 3.5c X 150 Sqmm Alu. AR. LTUG Cable |
| 79 | 3.5c X 50 Sqmm Alu. AR. LTUG Cable |
| 80 | 4C x 4 Sqmm Cu. AR. LTUG Cable |
| 81 | Earthing with copperearth plate 600x600x3mmthick including acessoriesand providing masonary enclosure with cover plate having locking arrangement and watering pipe of 2.7m long etc with charcoal / coke and salt as required. |
| 82 | Supplying and laying of following size earth flats at 0.50 mt below the earth including soldering/welding as required |
| 83 | 25 x 5mm GI strip |
| 84 | Removing of existing 1F and 3F circuit wirings from wall and relaying the same in the existing CMS ( without Pipe) or cable tray ( with existing PVC pipe) with necessary tags and end terminations. |
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