REPAIR AND MAINTENANCE OF HT LINE, VCBs, HT CONTROLLING DEVICES ALONGWITH MISC ITEMS UNDER GE NAGROTA

Amount

Filteration, dehydration of transformer oil as drained out from power transformer of Capacity 6.3 MVA 33/ 11 KV to make the oil fit for reuse by improving its dielectric strength not less than 55 KV. Dielectric strength of oil below 55 KV shall be replaced with new oil (new oil for toping/or for replacement shall be measured and paid separately under appropriate item of sch 'A') here-in-after.

Supply, treating (dehydrating), filling new transformer oil in transformers for topping up levels or for replacement of unfit oil. New oil having dielectric strength not less than 55 KV and shall be conforming to IS 335.

Taking out old breathers from transformer, supplying and fixing new breather duly filled with activated agent i.e silica gel for transformer of capacity 6.3 MVA.

Calibration to indoor Panel of 33/11 KV transformer by checking the connections, relays on control panel and at VCB side complete for proper functioning of the breaker .

Checking of protective devices on control panel such as differential relay, overload and earth fault relays including checking their wiring connections in the control panel for its proper functioning, testing complete all as specified and directed.

S& F of 3 phase digital type Volt Meter 0- 12 KV class 0.5 to match the ratio of existing CTs as per make on site complete as specified and directed by Engineer in Charge.

Calibration to HT VCB 11 KV 3 phase 800/630 amp 250 MVA installed at main power house after disconnecting the main supply incoming panel for repairs and replacement of unserviceable parts and refixing the same after repair and testing on full load from OEM or authorised dealer (Cost of spare parts and other job works will be paid under respective items) complete all as specified and directed :- Note :(a) Rates are deemed to include the cost of all tools, material and labour required for dismantling taking out and assembling of VCB with replacement of worn out nuts and bolts, gaskets, 'A' grade greasing and oiling of moving parts and refixing the same (b) Rates are deemed to include the cost of material and labour required to make alternative arrangement to bypass the electric supply through the HT panel or other HT line to avoid long period of shut down of electric supply.

Calibration to HT RMU (1 incoming + 3 outgoing) SF6 VCB type 11KV 3 phase 630 amps outdoor/indoor type installed at sub stations after disconnecting the main supply incoming panel for repairs and refixing the same after repair and testing on full load from OEM or authorised dealer (Cost of spare parts and other job works will be paid under respective items) complete all as specified and directed :- Note :(a) Rates are deemed to include the cost of all tools, material and labour required for dismantling taking out and assembling of VCB with replacement of worn out nuts and bolts, gaskets, 'A' grade greasing and oiling of moving parts and refixing the same (b) Rates are deemed to include the cost of material and labour required to make alternative arrangement to bypass the electric supply through the HT panel or other HT line to avoid long period of shut down of electric supply.

Opening the VCBRMU 11KV 3 phase, 800/630 amp, 250 MVA and replacing the single phase burnt motor of VCB with appropriate size of motor complete all as directed.

Repair/replacement of motor charging gear of VCBRMU 11KV 3 phase, 800/630 amp complete all as directed.

Repair/replacement of lifting lock in and out of VCB/RMU 11KV 3 phase, 800/630 amp complete all as directed.

Replacement of burnt trip coil assembly 24 V DC of VCB/RMU 11KV 3 phase, 800630 amp complete

Replacement of burnt closing coil assembly 24V DC of VCB/RMU 11KV 3 phase, 800/630 amp complete

Replacement of burnt wiring including cut out switches of VCB/RMU 11KV 3 phase, 800/630 amp complete

Replacement of TNT switch of VCB 11KV 3 phase, 800 amp complete all as ditected

Supply and fixing in replacement outdoor, 33KV potential transformer (33KV, 1 phase, multi rato, multi core) consisting hot dipped electro plated galvanised chanel iron base complete all as specified and directed

Supply and fixing in replacement outdoor, triple pole, gang operated switch rotating type switches horozontal mounting consisting of hot dipped electro plated galvanised channel iron base with drop out fuse having 9 Nos of insulators 33KV, copper/copper alloy tinned contacts, copper or chromium plated MS arcing chains capable of making and breaking the magnetising current complete with all connecting accessories with locking arrangement and drop out fuses working voltage 33000 volt 400 Amps including testing complete all as specified and directed by Engineer in charge.

Replacement of VCB Power Pack with battery backup for input voltage 230V AC and output of 110 volt DC, 1 Amp complete all as specified and directed

Replacement of unserviceable Numerical Earth fault/ overcurrent IDMT relay as per sample and make complete all as specified and directed by Engineer in charge.

Replacement of unserviceable Instantaneous fault relay for 33/11 KV C&R panel as per sample and make complete all as specified and directed by Engineer in charge.

Supply and Fixing of 3 phase digital type Amp meter 0- 120 Amp class 0.5 suitable for 33 KV C&R panel and 11 KV VCB to match the ratio of existing CTs complete all as specified and directed by Engr in Charge.

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth and getting out in soft and loose soil for erection of HT/LT poles, laying of HT/LT UG cables and provision of stay assembly complete

All as per Srl Item No. 22 here in before but depth beyond first 1.5m and not exceeding 3m

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

Removing excavated material not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point and entire satisfaction of Engr-in-Charge complete all as specified and directed

Sand cushioning to underground cables laid in trenches for laying of HT UG cable 8cm depth before laying the cable and 15cm after laying and punned down to depth of 10cm as per MES SSR Part-I (2009) complete all as speficied. Note:- Punned thickness of sand shall be measured.

Supplying and laying un-reinforced precast concrete cable cover, class HVP,type 1 with peak, size 300mm x 180mm x 40mm

Supply and laying XLPE cable insulated,armoured, heavy duty electric cable with aluminium conductor,11000 volts grade, cross-sectional area 240 Sqmm 3 core complete all as specified and directed . (Note : Excavation, returning and removal shall be measured and paid separately).

All as per Srl item No. 28 here-in-above but cross-sectional area 185 Sqmm 3 Core.

All as per Srl item No. 28 here-in-above but cross-sectional area 95 Sqmm 3 Core.

Supply, fixing and erection truly in vertical position steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified type 410 SP-55 (11.00m long) including painting with two coats of synthetic enamelled, and making alternate white & black strips each 30cm wide upto 1.5 m above from coping including dismantling of existing Poles/Struts of any type and size and removing the same from site out side of MOD land complete all as specified and directed.

M&L for mild steel framed work as in framed structure of Fe 410-W(gde E-250) quality A (around 4 pole/2 pole/LT panel/ transformer) guard bar, framed balusters and similar works including dismantling of existing framed work complete all as specified and directed.

M&L for PCC 1:4:8 type D-2 (using 40mm graded crushed stone aggregates) as in foundation filling and mass concrete in foundation of pole/stays etc complete all as specified

M&L for PCC 1:3:6 type C-2 (using 40mm graded crushed stone aggregates) as in foundation filling and mass concrete in foundation of pole/stays etc complete all as specified

M&L for PCC 1:2:4 type B-1 (using 20mm graded crushed stone aggregates) as in coping/above ground level around the pole etc complete all as specified.

Pin type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150mm height, 150mm dia for 11000 volts grade fixed "as in repairs" including dismantling insulators of any type and size complete all as specified. Make- BHEL/Jaipuria Brothers/Seimens or equivalent from the makes given in particular specifications.

Disc type insulator, porcelain, vitreous 145mm high and 255mm dia ball and socket type, white, brown or green 'Two-in-series' assembly for tension with tension clamps for conductors working pressure 11000 volts grade fixed "as in repairs" including dismantling insulators of any type and size complete all as specified. Make- BHEL/Jaipuria Brothers/Seimens or equivalent from the makes given in particular specifications.

Loop type insulator, vitreous porcelain, white, brown or green large size, with overall dimensions 90x140mm, clearance of hole 25.5mm fixed "as in repairs" including dismantling insulators of any type and size complete all as specified. Make- BHEL/Jaipuria Brothers/Seimens or equivalent from the makes given in particular specifications.

Restringing of HT 11KV lineoverhead line conductor comprising of any size ACSR conductor after opening the insulator, including restringing same and winding on insulator with proper size of binding wire upto permissible sag including cutting of tree branchesand trimming of smaller branches of tree of any size touching to OH line without damaging the same complete all as specified and directed.

Painting of 11 mtr long steel pole with cross arms, clamp of any length and shape for HT overhead line with two coat of aluminium paint including preparation of the existing surface including marking pole numbers in a 20 cm dia yellow circle & marking three black & two yellow bends width 30 cm by fluorescent paint from bottom of pole to 1.5 Mtr height, complete all as specified and directed.

Expended metal cut to length, bend to required shape weight not less than 4 kg/Sqm and tying with and including annealed MS wire not less than 0.9mm dia or welded to steel members complete all as specified and directed by Engineer in charge.

Switch air break gang operated (Swing out expulsion fuse insulators), triple pole mechnical operated from ground level mounted on insulator and steel frame (12 insulators type) out door type suitable for vertical installation single break provided with locking arrangement consisting of MS channel HT post top insulator with drop out fuses operating rod 20mm dia GI medium grade pipe worked from ground level confirming of IS 1818 of 1972 and contineous current rating upto 200 amp and volt 11 KV complete fixed "as in repairs" including dismantling air break gang operated switches vertical/horizontal mounted including insulators and operating mechanism any type, any size and removing the same from site out side of MOD land complete all as specified and directed. Make: BHEL/PACTIL or equivalent from the makes given in particular specifications.

All as per srl item No 42 above but of current rating 400 amps.

Earthing complete with galvanised mild steel earth plate electrode 60x60cmx6mmthick buried directly in ground preferably in vertical position (Earth pit not less than 2.25 mtr below ground level) with top edge of the earth plate not less than 1.5 mtr below normal ground level connected to galvanised iron strip of size 32x6mm by means of bolts, nuts, check nuts and washers of galvanised iron including PCC pit 1:2:4 type B-1 pre cast RCC cover slab of size 550x550x75mm with suitable built in handle made from 12mmdia MS round bar, excavation and earth work in any type of soil 20mm dia bore medium grade galvanised iron water tubing fixed with cast iron funnel and wire mesh at one end and 15mm bore light grade galvanised iron protection pipe for earth lead wire upto 5m length, charcol, common salt complete all as shown in electric plate No 3 of SSR 2009 Part I connected to equipment complete all as specified and testing on completion

M&L Cable jointing kit for 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 cable of size 50 to 95 sqmm complete all as specified and directed. Make 3M India Ltd / M seal / Denson or equivalent from the makes given in particular specifications.

All as per Srl item No. 45 here-in-before but for cable of cross sectional area 120 to 185 sqmm.

All as per Srl item No. 45 here in before but for cable of cross sectional area 240 to 300 sqmm.

M&L Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 to 95 sqmm.

All as per Srl item No. 48 here in before but for cable of cross sectional area 120 to 185 sqmm.

Supply and install HT bus bar chamber, factory made, weather and vermin proof having size 90x90x60 cm made out of 3mm thick MS sheet with 200 Amp rated bus bar and with 11 KV pedestal type HT insulators 6 No with angle iron frame of size 75x75x6mm duly painted with two coats of enameled paint and necessary PCC work for foundation complete all as specified and directed by Engineer in charge.

Labour and tools for trimming tree branches up to 100 mm grith of any location around existing HT/LT OH lines giving clearance of 1.5 m on all sides after arranging shut down and taking all precaution while working on lines including all T&P required for the purpose complete all as specified and directed by Engineer-in- charge. (Note - Trimming of tree branches irrespective in numbers in each span shall be measured as one unit)

Material and labour for spreading and leveling evenly (any thickness) 20 mm graded stone aggregates complete all as specified and directed.

Material and labour for spreading and leveling evenly (any thickness) 40 mm graded stone aggregates complete all as specified and directed.

Note:- 1) The work under this schedule (Item No. 1 to 60) are meant for maint of External Electric Supply in Nagrota Mil Stn (including Katra, Sanjhi Chat, Charli Hill). The work shall be executed on ground on required basis. Contractor shall deploy sufficient resources to keep smooth working of External ELectric Supply at station. Contractor or his representative will daily attend the complaints of E/M complaint cell and in addition any breakdown shall be communicated to contractor or his representative by concerned Engineer in charge/ JE E/M through phone call, text message, complaint slip and or in writing through site order or through other means. Non compliance of attending breakdown by contractor within 24 hours after notifying the complaint, recovery @ Rs 2000/- per say shall be recovered from contractor's payment for each complaint so notified. 2) Contractor responsibility is to liaise with the department concerned for HT/LT supply shut down required to carry out the work and also ensure the safety of labour employed by giving them safety equipments like helmet, gloves, safety belt, discharge rod etc and nothing extra shall be permissible on this account. 3) Schedule of credit Rs. 91,487.00 will be deducted from total amount quoted while accepting the bid. Details of schedule of credit is given in tender documents.

MAMTA ENTERPRISES

M/S RAJ ENGINEERS

ASHOKA ENGINEERS AND BUILDERS