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| 1 | M&L for carrying out the repairs to transformer,step down,11/0.433 kV , 315 to 400KVA of make Volt Amp at existing position on platform after disconnection of HT/LT connections & earthing lead , opening of transformer cover plate, taking down of transformer oil to a level as required and kept in clean and dry container for re use at same time , repairing/overhauling to the defective parts/components including replacement of unserviceable parts as directed, making connection of the transformer after repair , topping of the tankwith the same transformer oil,dehydrated old oil with new oil as required/directed and testing the transformer all as specified and directed.NOTE The quoted rate shall be deemed to include labour component for all repairs/replacements, other elements etc to make the transformer fully functional and serviceable to the entire satisfaction of Engr in charge. However the payment for the items as included required ordered and executed shall be paid seperately, as supply only in relevant items. |
| 2 | M & L Vaccum dehydration with hot filteration plant of old transformer oil at different locations ,after filteration dielectric strength shall not be less than 55kV in 2.5mm gap electrode,complete all as specified and directed. Note:-The contractor shall submit necessary test report for dielectric strength before dehydration as well as after dehydration from CPRI/Govt Approved lab as per relevant IS. The contractor\"s quoted rate shall also be deemed to include for this element. Note- transformer oil after dehydration shall be measured and considered for the payment under the above item. |
| 3 | Supply only new transformer oil in non-returnable containers including testing of parameters from Govt authorised laboratory as per IS: 335:1993of any capacity at different locations,complete all as specified and as directed.Note- The dielectric strength of transformer oil shall not be less than 55kV in 2.5mm gap electrode. |
| 4 | Supply only 6mm thick synthetic bonded cork gasket sheet for top cover and primary/secondary bushes for 315 KVA Capacity of transformers complete all as specified and directed |
| 5 | Supply only procelain transformer bushing with bushing rod (studs) made out of brass/ gun metal with threading and of suitable length /size as per existing including metal rings, bolts, washers, rubber rings, etcfor HT primary side of existing 11/0.433 kV step down transformer of capacity 315/400 KVA complete all asspecified and as directed. |
| 6 | Supply only procelain transformer bushing with bushing rod (studs) made out of brass/ gun metal with threading and of suitable length /size as per existing including metal rings, bolts, washers, rubber rings, etcfor LT secondary side of existing 11/0.433 kV step down transformer of capacity 315/400 KVA complete all asspecified and as directed. |
| 7 | Supply only Oil temperature indicator with two mounting switch,3 meter capillary length, ranging from 0 to 150 degree C,alarm and trip mechanism suitable for existing 11/0.433 kV step down transformer of capacity 315 KVA and 400 KVA complete all asspecified and as directed. |
| 8 | S&F in repair of Lightning arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp of 11kv all as specified & as directed. |
| 9 | Supplying and laying in repair of synthetic Rubber insulated mats 2 mm thick and size 2m x 1m for voltage upto 3.3 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety complete all as specified & as directed. |
| 10 | Supplying and layingin repair of synthetic Rubber insulated mats 2.5 mm thick and size 2m x 1m for voltage upto 11 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety complete all as specified & as directed. |
| 11 | Surface excavation n exc 30mm deep and average 15cmdeep in soft/loose soil including sand and pebbles for removing vegetation and bushes and not exceeding 30cm depth in Power houses / sub station area all as specified & as directed. |
| 12 | S&F of Switch Air Break, Gang operated , triple pole,mechanically operated,mounted on insulator and steel frame, with manual operating mechanism worked from ground level including 25mm bore GI pipe heavy duty and handle arching horns and terminal connectors for ACSR conductors confirming to IS-1818/72 and 9921/85 with 3 isolators per pole, for current rating upto 400 amps incl dismantling of old unsv one complete all as specified and as directed |
| 13 | Materials and labour for earthing complete with copper plate electrode 600 mm x 600 mm x 3.15 mm thick, burried directly and preferably vertically in ground, earth pit not less than 2.25 Mtr deep below ground level with top edge of the plate not less than 1.5 m below ground level connetced with copper strip 20 X 3mm by means of nuts, bolts, check nuts and washers made of copper, earthing lead to be protected by galvanised iron pipe of 40 mm dia (medium grade) and other end connected to earthing test point or lightening arrestor or main controlling switch or as directed including providing funnel with 20mm dia(medium grade) bore galvanised iron pipe, wire mesh, charcoal or coke and common salt in alternate layer of 15cm (compacted thickness) all round the earth electrode, including necessary earth work in excavation, returning filling and removal of surplus earth upto a distance not exceeding 50 m etc all as shown on electrical plate No. 3 of MES Schedule Part-I(2009) PCC with suitable handleincluding testing on completion and dismantling of old unsv one complete all as specified and as directed. |
| 14 | Materials and labour for earthing complete with galvanised steel earth plate electrode 600 mm x 600 mm x 6mm thick, burried directly and preferably vertically in ground, earth pit not less than 2.25 Mtr deep below ground level with top edge of the plate not less than 1.5 m below ground level connetced with GI strip 32 X 6mm by means of nuts, bolts, check nuts and washers made of copper, earthing lead to be protected by galvanised iron pipe of 40 mm dia (medium grade) and other end connected to earthing test point or lightening arrestor or main controlling switch or as directed including providing funnel with 20mm dia(medium grade) bore galvanised iron pipe, wire mesh, charcoal or coke and common salt in alternate layer of 15cm (compacted thickness) all round the earth electrode, including necessary earth work in excavation, returning filling and removal of surplus earth upto a distance not exceeding 50 m etc all as shown on electrical plate No. 3 of MES Schedule Part-I(2009) PCC with suitable handleincluding testing on completion including dismantling of old unsv one complete all as specified and as directed. |
| 15 | S&F in repair of Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required for 20x3 copper strip using porcelain clit/post insulator including brazing if required & GI protection pipe of suitable size complete all as specified and directed. |
| 16 | S&F in repair of Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required for 32x6 GI strip using porcelain clit/post insulator including brazing if required & GI protection pipe of suitable size complete all as specified and directed. |
| 17 | Materials and labour for XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavyduty) with aluminium conductor, 11000 volts (Earthed) grade cross sectional area 95 sq. mm, 3 core including taking down of old unsv one all as specified & as directed. |
| 18 | Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in soft/ loose soil all as specified & as directed. |
| 19 | Returning, filling in, including spreading, levelling, watering and well ramming in layersnot exc 25 cm. in any type of soil all as specified & as directed |
| 20 | Removing excavated material n exc. 50m and depositing where directed at a level n exc. 1.5 m above the starting point in any typr of soil all as specified & as directed. |
| 21 | Material and Labour for dry river Sand filling in trenches including punning down consolidation in trenches for cable protection all as specified & as directed. |
| 22 | Supplying and laying reinforced precast concrete cable cover, class class HV, Type 1, flat, size 300mmx l80mm x 40mm as cable cover/ protection all as specified & as directed. |
| 23 | Note:- Schedule of credit (Sch \"A\") amount of Rs 16970.00 shall be deducted from the total quoted amount of BOQ. |
