REPAIR ANDMAINTENANCE OF UNDERGROUND CABLES, ELECTRIC PANEL,MCCB,OVERHEAD CONDUCTOR AND ALLIED WORKS AT AF STATION NATHATOP

Amount

Excavation in trenches in any type of soil not exceeding 1.50 metre wide and not exceeding 1.50 metre in depth, for foundation, laying of pipes and LT cable and getting out, , complete all as specified and directed by Engineer-in-Charge

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick each in any type of soil , complete all as specified and directed by Engineer-in-Charge

Removing excavated spoil (soil) to a distance not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point , complete all as specified and directed by Engineer-in-Charge

Dry sand cushioning to under ground cable all as per clause 19.75 of SSR Part - I laid before and after laying of cable, complete all as specified and directed by engr-in-charge.

Sub class 'B' old size bricks well burnt as covering to under ground cables , laid dry, flat over the cables on sand cushioning with width equal to length of the brick as mechanical protection to cable in repair , complete all as specified and directed by Engineer-in-Charge

GI tubes light grade 80 mm bore with all fitting/acessories for protection of cable on pole/wall and under road crossing including clamps, nut bolt etc and including sealing end of pipe with bituminous preformed wooden gutties , including taking down old unserviceable,complete all as specified and directed by engr-in-charge.

GI tubes light grade 50 mm bore with all fitting/acessories for protection of cable on pole/wall and under road crossing including clamps, nut bolt etc and including sealing end of pipe with bituminous preformed wooden gutties, including taking down old unserviceable complete all as specified and directed by engr-in-charge.

Supply, laying , jointing , commissioning and testing cable (armoured) XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured electric cable (heavy duty) with aluminium conductors, 1100 volts grade including taking down old unserviceable of following size all as specified and directed by Engr-in-Charge:-

a) 50 sqmm. 3.5 core

b) 70 sqmm. 3.5 core

c) 95 sqmm. 3.5 core

d) 120 sqmm. 3.5 core

MCCB four pole 415 Volts 50 Hz 400 Amps rating with rupturing capacity not less than 36 kA, Ics = 100% Icu, adjustable thermal & adjustable megnetic settings with spreader links, copper reducer etc including taking down existing old unservicable including accessories therein & disposing from site complete all as specified and as directed. Make: Cat Part No:IHLLSEEF 0400 of HAVELLS or equavalent to Legrand/ SIEMENS/Schneider

MCCB four pole 415 Volts 50 Hz 250 Amps rating with rupturing capacity not less than 36 kA, Ics = 100% Icu, adjustable thermal & adjustable megnetic settings with spreader links, copper reducer etc including taking down existing old unservicable including accessories therein & disposing from site complete all as specified and as directed. Make: Cat Part No:IHLLSEEF 0250 of HAVELLS or equavalent to Legrand/ SIEMENS/Schneider

MCCB four pole 415 Volts 50 Hz 160 Amps rating with rupturing capacity not less than 35 kA, Ics = 100% Icu, adjustable thermal & adjustable megnetic settings with spreader links, copper reducer etc including taking down existing old unservicable including accessories therein & disposing from site complete all as specified and as directed. Make:Cat Part No:IHLFENF0160 of HAVELLS or equavalent to Legrand/ SIEMENS/Schneider

MCCB three pole 415 Volts 50 Hz 400 Amps rating with rupturing capacity not less than 36 kA, Ics = 100% Icu, adjustable thermal & adjustable megnetic settings with spreader links, copper reducer etc including taking down existing old unservicable including accessories therein & disposing from site complete all as specified and as directed. Make: Cat Part No:IHLLSEET0400 of HAVELLS or equavalent to Legrand/ SIEMENS/Schneider

MCCB three pole 415 Volts 50 Hz 250 Amps rating with rupturing capacity not less than 36 kA, Ics = 100% Icu, adjustable thermal & adjustable megnetic settings with spreader links, copper reducer etc including taking down existing old unservicable including accessories therein & disposing from site complete all as specified and as directed. Make: Cat Part No:IHLLSEET0250 of HAVELLS or equavalent to Legrand/ SIEMENS/Schneider

MCCB three pole 415 Volts 50 Hz 160 Amps rating with rupturing capacity not less than 35 kA, Ics = 100% Icu, adjustable thermal & adjustable megnetic settings with spreader links, copper reducer etc including taking down existing old unservicable including accessories therein & disposing from site complete all as specified and as directed. Make: Cat Part No:IHLFENT0160 of HAVELLS or equavalent to Legrand/ SIEMENS/Schneider

MCCB three pole 415 Volts 50 Hz 25 to 100 Amps rating with rupturing capacity not less than 35 kA, Ics = 100% Icu, adjustable thermal & adjustable megnetic settings with spreader links, copper reducer etc including taking down existing old unservicable including accessories therein & disposing from site complete all as specified and as directed. Make: Cat Part No:IHLFENT0100 of HAVELLS or equavalent to Legrand/ SIEMENS/Schneider

Earthing complete with galvanised steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground (Earth pit not less than 2.25 metres deep below normal ground level) with top edge of plate not less than 1.5 mtr below normal ground level, connecting to the galvanised iron earth wire 4 mm dia by means of bolts, nuts, check nuts and washers of galvanised iron and earth strip protected by provision of GI light grade pipe 15 mm bore including provision of concrete pit in PCC (1:2:4) type B-1 using 20 mm graded stone aggregate with XPM (weight not less than 4 Kg/Sqm) and frame of angle iron 25x25x6mm with lugs 02 Nos and with 20mm bore pipe for watering perforated at bottom 7.50 mtr long placed on top edge of earth plate, layers of common salt and charcoal filling, test point made out of 40mmx6mm flat iron with fixing arrangement funnel, wire mesh and earth work in any type of soil, returning, filling in and removal of surplus soil to a distance not exceeding 50 mtrs all as per electircal plate No. 03 of SSR-2009 Part-I and connecting to earth test point all as specified or indicated including testing on completion including taking down old unserviceable complete all as specified & directed by Engr-in-charge

Earthing complete with copper earth plate electrode of size 60cm x 60cm x 3.15mm buried directly in ground vertically at a depth not less than 4.50 metre below normal ground level with top edge of earth plate at a depth not less than 3.5 metre below normal gorund level surrounded from all sides by 15 cm thick and packed alternate layer of common salt and charcoal and a top layer of copper sulphate 150mm thick all as specified and as directed in drawing No CEAF/SK-60/2017 Dt 24.4.17 including bringing of mother soil from outside for filling holes, including Copper strip of size 32 x 6mm by means of nuts, bolts and check nuts, washers of copper up to main board/test point or as required including necessary excavation and earth work in any type of soil so as to achieve earth resistance below 3 Ohms including excavation of polypit chamber with polyplastic pit cover (cost of polypit chamber with polyplastic pit cover shall be deemed to be included in the rate quoted) complete all as specified and as directed by Engineer-in-Charge including dismantling of existing unserviceable earthing. Notes : (a) Copper strip beyond test point shall be measured and paid for separately. (b) Earthing resistance result shall be less than 3 Ω .If the result comes more than 3 Ω the contractor shall carry out the earthing at separate location/site given by the Engr-in-Charge after taking out of earth electrode without any extra cost to the deptt. (c) Test point terminal block shall be measured and paid for separately. (d) The contractor's quoted rates shall be deemed to include for dismantling/taking down of old unserviceable earthing of any type and making good the disturbed surfaces and nothing extra shall be admissible on this account. (e) Any other fittings/fixtures if technically required for achieving desired results (if not included above) shall be provided by the contractor without any extra cost to the Govt. (f) If mother soil is not available then mother soil wil be provided by contractor from outside source without any extra cost to the Govt.

Earth continuity conductor or main earthing lead 4 mm dia GI wire 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 In Repair, complete all as specified & directed by Engr-in-charge

Earth continuity conductor or main earthing lead 20x3 mm Copper strip 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, In Repair,complete all as specified & directed by Engr-in-charge

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 after preparation of surface, complete all as specified and directed.

Stay assembly complete woth accessories as shown in electric plate no1 with dia of stay rod is 20 mm dia, 180 cm long including loop type insulator, stay clamps, excavation, concrete and stay wire, including taking down old unserviceable , complete all as specified and directed by Engr-in-charge..

Aluminium conductor, steel reinforced of size farret/mink/weasel, straining properly on insulators with and incluing aluminium tape/winding wire, clamps and jumpers etc. including taking down existing old unserviceable conductor and removing away complete all as specified and directed. Note :- Engr-in-Charge shall ensure that ACSR conductor shall be used as per the recommended size only.

Lightning arresters for outdoor use, non-liner resistor type, horn gap and choking coil, maximum working pressure 1100 volts , including taking down old unserviceable lighting arresters and removing away complete all as specified and directed.

Supply and fixing air circuit breaker ACB 4 Pole, 415V, Thermal Magnetic Release Manual fixed type with Microprocessor release of capacity 630 Amps including incoming and outgoing connection with proper copper thimbles etc including taking down old unserviceable, complete all as specified and as directed by Engr-in-charge. Make : Cat Part No : IHAFE1E060 of Havells or equavalent to L&T/schneider electric

M& L for cable jointing kit for 11 KV (earthed) grade cable for indoor cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm , including taking down old unserviceable ,complete all as specified and directed by Engr-charge.

M& L for cable jointing kit for 11 KV (earthed) grade cable for indoor cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm including taking down old unserviceable ,complete all as specified and directed by Engr-charge.

M&L for front opertaed on-load change over switch of capacity 250 amps ,4 Pole ,415 volts ,50 Hz, in sheet steel enclosure including taking down old unserviceable ,complete all as specified and directed by Engr-charge.MAKE: Cat part No:IHCNFE0250 of Havells or equavalent to /Legrand/Schneider

M&L for front opertaed on-load change over switch of capacity 400 amps ,4 pole,415 volts ,50 Hz ,in sheet steel enclosure complete including taking down old unserviceable ,complete all as specified and directed by Engr-charge.MAKE: Cat part No:IHCNFE0400 of Havells or equavalent to /Legrand/Schneider

kerni electricals

DAVINDER SINGH

R K BUILDERS

PARBAT AND SONS

M/S MANJIT SINGH AND SONS

MOHAN LAL AND SONS

SATYA SALES AND BUILDERS