REPAIR/MAINT OF TRANSFORMER AND ALL CONNECTED WORKS AT MIL STN KOTA

Amount

M&L for disconnecting of defective transformer (indoor/outdoor type) 11KV/433 volts copper/ Aluminium wound from power mains and dismantling the same from 2/4 pole structure/ platform mounted and transporting the same to authorised workshop and opening the transformer cover, draining out of transformer oil and keep safely for reuse after filtration, assembling, removing of the burnt parts ie tape, paper insulating strings etc gently and carefully, washing of the dust, rust and dirt from all parts including taking out HT/LT leg coil core tank and cooling tubes, painting the inner side tank by zinc chromate paint and preparing the same for re-assembling after carrying out required repair and installation on existing 2/4 pole structure/ platform with necessary fixing arrangement including connecting up electrically, commissioning and testing all as directed by Engineer-in-Charge and specified in particular specification of the following capacity :-

(a) 50 KVA to 200 KVA capacity

(b) 250 KVA to 500 KVA capacity NOTE: (i) Repair cost is deemed to be included in the quoted rate; and Unserviceable items required to be replaced shall be measured and paid separately. (ii) The burnt transformer oil will be contractor property & any new oil will be measured and paid separately under respective item. (iii) The coils and the oil shall be inspected for repair/replacement by department rep.

Supply only of burnt /defective HT & LT copper coil with new made out of super enamelled high quality copper wires of matching size to the existing one complete all as specified and directed

Supply only HT tap changer of suitable size with tapping arrangement 2.5% to 7.5% and one normal tapping including connecting up with HT coil and testing of transformer 11/0.415 kV capacity up to 500 KVA complete all as specified and directed

Servicing over hauling including greasing of HT Tap chnager and with tapping arrangement 2.5% to 7.5% and one normal tapping including connecting up with HT coil and testing of transformer capacity up to 500 KVA complete all as specified and directed

Supply only drain out oil outlet valve of any type & size suitable for outdoor/ indoor transformer type of complete all as specified and directed

Supply only synthetic rubberised cork sheet gasket 1/4" thick suitable for main body top cover of transformer Capacity up to 500 KVA complete all as specified and directed

Supply only transparent type silica gel breather assembly of suitable size of transformer capacity upto 200 KVA connected to air column with conservator tank complete all as specified and directed

Supply only transformer oil temperature gauge 0 - 100 graduated Analogue dial type complete all as specified and directed

M&L for Dismantling and opening transformer tank cover removing of worn out transformer oil tank gasket and supply, fixing of new rubberized gasket sheet 6.0 mm thick and to be pasted using gasket adhesive for the following transformer including refixing the top cover with conservator tank for transformer capacity up to 200 KVA complete all as specified and directed

M&L for Dismantling and opening transformer tank cover removing of worn out transformer oil tank gasket and supply, fixing of new rubberized gasket sheet 6.0 mm thick and to be pasted using gasket adhesive for the following transformer including refixing the top cover with conservator tank for transformer above 200KVA and upto 500 KVA complete all as specified and directed

M&L for replacement of defective/ cracked HT porcelain bushing of suitable (Set of three) size for transformer upto 500 KVA including washers of good quality complete all as specified and directed

M&L for replacement of defective/ cracked LT porcelain bushing (set of four) of suitable size of transformer upto 500 KVA including washers of good quality complete all as specified and directed

M&L for replacement of defective/ worn out HT bush rod (set of three) made out of copper with brass nuts and washers of required length including connecting up with HT coil of transformer upto 500 KVA complete all as specified and directed

Replacement of defective/ worn out LT bush rod (set of four)made out of copper with brass nuts and washers of required length including connecting up with LT coil of transformer upto 500 KVA complete all as specified and directed

Supply and filling as in replacement of silica gel inside the breather and fixing properly with transformer complete all as specified and directed

Cutting off worn out aluminium cable terminal lugs from the LT cable, S&F of new aluminium cable lugs of suitable size and reconnecting the cable with transformer, terminal stud including dressing of cable, excavation & surface dressing after providing sand cushioning and brick protection complete all as specified and directed

M&L for Dehydration /filtration of transformer oil existing transformer installed at site with portable plant to improve the dielectric strength 50 KV at 2mm electrode gap including testing of dielectric strength after dehydration and filtration at site complete all as specified and directed.

Supply & filling of transformer oil in transformer installed in situ at site for toping up the level of oil having dielectric strength 40-60 KV during filling after initial filtration conforming to IS-335 complete all as specified and directed. MAKE- POWER / INSOLE / UNIVERSAL / SAVITA NOTE: Transformer oil shall be supplied in sealed container and empty barrel of transformer oil will be deposited by contractor in E/M store yard.

M&L for preparation of old surfaces, removing, cleaning of oil, grease etc. and painting with two coats of synthetic enamel paint of grey colour by spray complete all as specified and directed of following capacity transformer :- Note:- The painting of transformer shall be carried out in situ ie. on four pole structure or in substation at different places.

(a) Up to 200 KVA capacity

(b) 200 KVA to 500 KVA capacity

M&L earthing complete as per electrical plate No 3 of MES SSR Part-I with galvanised steel earth plate electrode 600 mmx600mmx6mm, buried directly vertically in ground in a pit depth not less than 2.25 metres below ground level with top edge of earth plate at a depth not less than 1.5 metre below normal ground level connected to and including galvanised iron or steel earth strip 25mm x 4mm by means of bolts, nuts check nuts and washers of galvanised iron or steel. Earthing strip shall be protected by galvanised iron or steel pipe 40 mm bore light grade and connected to continuous earth wire on pole / test point. Watering pipe shall be 20 mm bore GI medium grade. The earthing shall be of inclusive of excavation & earth work in any type of soil, charcoal, salt, funnel PCC pit and RCC cover complete all as specified & tested complete. NOTE:- (i)The concrete pit shall be made in PCC 1:3:6 type C-1, using 12.5mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover shown in electrical plate No 3 of MES SSR Part-I shall be provided. Reinforcement in RCC cover shall be of 8mm dia TMT bars laid @150mm c/c both ways (ii) Quoted shall include the cost of 7.5 metre GI pipe for protection of earth wire. (iii) Quoted shall include cost of 7.5 metre earth lead wire. (iii) Quoted shall include cost of 7.5 metre earth lead wire. (iv) Earth electrode shall be surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides.

M&L earthing complete as per electrical plate No 3 of MES SSR Part-I with galvanised steel earth plate electrode 600 mmx600mmx6mm, buried directly vertically in ground in a pit depth not less than 2.25 metres below ground level with top edge of earth plate at a depth not less than 1.5 metre below normal ground level connected to and including galvanised iron or steel earth strip 32mm x 6mm by means of bolts, nuts check nuts and washers of galvanised iron or steel. Earthing strip shall be protected by galvanised iron or steel pipe 40 mm bore light grade and connected to continuous earth wire on pole / test point. Watering pipe shall be 20 mm bore GI medium grade. The earthing shall be of inclusive of excavation & earth work in any type of soil, charcoal, salt, funnel PCC pit and RCC cover complete all as specified & tested complete. NOTE:- (i)The concrete pit shall be made in PCC 1:3:6 type C-1, using 12.5mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover shown in electrical plate No 3 of MES SSR Part-I shall be provided. Reinforcement in RCC cover shall be of 8mm dia TMT bars laid @150mm c/c both ways (ii) Quoted shall include the cost of 7.5 metre GI pipe for protection of earth wire. (iii) Quoted shall include cost of 7.5 metre earth lead wire. (iii) Quoted shall include cost of 7.5 metre earth lead wire. (iv) Earth electrode shall be surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides.

Supply, laying and commissioning XLPE insulated screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy duty) cable cross sectional area 95 Sqmm, 3 core with aluminium conductor 11000 volts grade IS-7098 marked, suitable for HT 11 KV (E) System laid in trenches/ ducts/ encased in GI pipe/ fixed to poles including jointing & testing and taking out unserviceable cable complete all as specified and directed

M&L for cable end termination, jointing kit for HT 11 KV (Earthed) grade cable for outdoor termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor complete all as specified and directed of following sizes :-

(a) 95 Sqmm x 3 core

(b) 120 to 185 Sqmm x 3 core

M&L for straight through, jointing kit for HT 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor complete all as specified and directed of following sizes :-

(a) 95 Sqmm x 3 core

(b) 120 to 185 Sqmm x 3 core

S&F in repairs lightening arrestor expulsion type complete with all fittings transmission class discharge capacity 30 KA suitable for 11000 volts complete all as specified and directed

S&F in repairs lightening arrestor expulsion type complete with all fittings transmission class discharge capacity 65 KA suitable for 33000 volts complete all as specified and directed

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in depth for foundation etc or for shafts, wells, cess pits, manholes, pier holes, laying cables erection of poles / struts/stays etc not exceeding 10 Sqm on plan, not exceeding 1.5 metre in depth and getting out in hard/dence soil complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25cm in any type of soil complete all as specified and directed.

Removing of excavated material (soil) to a distance not exceeding 50 metre and depositing where directed at a level not exceeding 1.50metre above the starting point complete all as specified and directed

M&L for sand cushioning to PVC underground cable with tibba sand and punning to provide a required cover complete all as specified and directed. Note:- Punned thickness shall be considered for payment purpose

Supplying and laying un-reinforced precast cable covers class HV, type I, flat, size 300mm x 180mm x 40mm complete all as specified and directed.

S&F for HT cables route indicator cast iron of suitable size along HT cable trench including painting and grouted in ground in PCC etc complete all as specified and directed.

S&F in repair galvanised steel tubing light grade for protection of underground cable on poles / walls under road crossing etc of following sizes:-

(a) 80mm bore

(b) 100mm bore

M&L for Rubberised insulation matting chequered size 1800x900x20 mm thick, heavy duty ISI marked & shall be of approved quality & make dully tested on 11 kV complete all as specified and directed

Supply & fix Disc type insulator, porcelain vitreous three in series ball & socket type for 33 KV working pressure complete all as specified and directed

Dismantling old existing MS cross arms of any type/shape complete all as specified and directed.

M&L for Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of aluminium paint complete all as specified and directed

M&L for anti-climbing device; spikes type fabricated out of M.S. bars (round, square and flat) including nuts, bolts, washers and welding in two halves made to shape to suit the cross section of the pole complete all as specified and directed.

M&L in replacement old Unserviceable HT Jumper existing Two Pole/four Pole Structure to bus bar to GOD 3 Nos with HT cable 95 sqmm not less than 3 mtr complete including connector and lugs of suitable size with provision of Nuts & bolts washer etc complete all as specified and directed

M&L for trench less boring of existing road/path for laying of GI pipe 100 mm bore size protection for UG cable including making good disturbed area/surface complete all as specified and directed

Schedule of Credit

K B Enterprises