PROVN OF TRANSFORMER 250KVA LT CABLE DISTRIBUTION PANEL AND ALLIED WORKS FOR SATELLITE HUB STATION S BAND AT DABATHWA MIL STATION UNDER GE (U) E/M MEERUT CANTT

Amount

Supply, installation, testing and commissioning outdoor type platform mounted step down transformer of capacity 250 KVA, 11 KV/415 Volts (at NO load), AC 3 Phase, 50 HZ, core type double copper wound, oil immersed, naturally cooled, oil natural-Air natural (ON/AN) with external cooling tubes, delta connection on primary side (HV) and star connected on secondary side (LV) in accordance with vector group Dyn-11 with Neutral brought out on secondary side (LV side) and having tapings at (-) 2.5% and 5% on HV side to be changed by means of hand operated OFF load tap changer gear and transformer should conforming to level-2 of IS-1180 : 2014. The maximum temperature rise should not exceed 45 degree celsius in oil and 55 degree celsius in HV/LV winding when measured by resistance method after continuous full load run on an ambient temperature of 40 degree celsius. Transformer shall comprise of the following :-

(a) One cable box LT side (secondary side) consisting of four Nos porcelain bushing with copper rods complete with nut & washers with one No cable gland suitable for reception/ taking out of 240 Sqmm 3 1/2 core LT 1100 Volts grade XLPE insulated and PVC sheathed heavy duty armoured cable including gland, joint & jointing material complete all as specified.

(b) HT side (primary side) consisting of three Nos porcelain bushing with copper rods complete with nut and washers with cable gland HT busing suitable for outdoor mounting transformer, 11000 Volts grade XLPE insulated heavy duty armoured cables including gland joint and jointing material complete

(c) Oil conservator with filter type drain valve and oil level guage complete

(d) De-hydrating breather with first fill of dehydrating agent (silica gel) complete

(e) Explosive vent & thermometer pocket on tank cover, oil level gauge, oil drain filter valve, lifting lugs, oil filling hole with cap/ plug with connection plate complete, air release valve plug and four Nos solid cast steel detachable rollers

(f) One 100mm dia, dial type thermometer, vapour pressure type having range 0-120 degree celsius with metal guard having maximum perimeter temperature reading indicator with re-setting device

(g) Four earthing terminals on tank cover to facilitate fixing of 32mm x 6mm galvanised iron earth strip for earthing of neutral & body

(h) Rating plate and terminal marking plate

(j) Extra bushing for neutral in the LT cable box for providing independent set of earthig for neutral.

(k) First filling of new and unused transformer oil IS-335 marked filtered and tested upto 40 KV dielectric strength at 2.5mm air gap between testing electrodes.

M&L Construction of brick platform of size 3000mm x 3000mm and 1000mm above GL with 1000mm wide step on one side with 1:4 cement mortor, including 01 Nos suitable iron gate at step side, 02 Nos Channel for placing of transformer, PCC in foundation for footing, RCC slab on the top of plateform after fillingo soil/debris, plastering of brick wall and ladder etc witn 1:4 cement mortor and three coat white wash for installation of outdoor type transformer including suitable length chain link fencing arround the plinth complete all as specified and directed.

Supply and errection steel tubular pole swaged type 11.0 meter long, type 410 SP-55, IS-2713 marked complete with M&L for mild steel base plate (fillet welded to poles), pole cap/final taper plug, bolts, nuts, washer etc. painting of poles with one coat of red oxide primer and two coat of aluminum paint before fixing and one coat of aluminum paint after fixing on exposed surface and embedded portion shall be painted with two coat of black bituminous paint including the portion above coping shall be painted in alternative 05 Nos bands/straps of black & red colour starting with red colour (each band of 30 cm wide ) by two coat of synthetic enemeled paint up to 1.5m height including complete all as specified and directed by Engr-in-charge.

S&F cross arms, bracing, support, clamps etc. made out of mild steel channel or angle section of required size and shape including clamps, back plate with bolts, nuts & washers drilling for insulator bolts sha welding, bending cold or hot in any shape or size including all fixing arrangement on HT over head line and painted with two coats of alumiunum paint over a coat of red oxide zinc chrome primer complete all as specifed & directed

M&L for PCC 1:3:6 type C-2 (using 40mm graded stone aggregate) as in foundation of pole, stay etc complete.

M&L for PCC 1:2:4 type B-1 (using 20mm graded stone aggregate) for coping of pole etc complete all as directed.

Supply, installing, testing and commissioning of air break, gang operated tripal pole switch with DO, out door horizontal/ vertical type (ISI marked) mechanically operated, mounting on insulators and frame work (steel work for mounting GODO etc) with operating mechanism worked from ground level with locking arrengement including Godrej pattern 65mm pad lock with two keys complete suitable for HT 11 KV, 50 Hz AC supply including necessary connection complete all as specified and directed by Engr-in-Charge of 200 Amp rating with 12 Nos insulator complete with DO and HT fuse element.

Supply and fixing lightening arreastors expulsion type complete with all fittings, transmission class, discharge capacity 65 KA complete all as specified and directed

Supply, laying & testing cable XLPE insulated, screened, , galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 11000 volts (E) grade, of size 3 core 120 sq mm complete all as specified and directed.

Supply and lay and testing cable XLPE insulated screened, galvanised steel strip or wire armoured, electric cables ( heavy duty) with stranded aluminium conductor 1100 volts grade, of size 3.5 core 240 sqmm complete all aspecified and directed.

Excavation in trenches in soft/loose soil n. exc. 1.5 meter wide and n. exc. 1.5 mtr depth and getting out, including trimming the sides and forming bottom surface to required levels for laying cables, foundation of poles, stay etc complete all as specified.

Excavation in trenches in any type soil exc. 1.5 meter wide and exc. 1.5 mtr depth and n exc 3.00 Mtr and getting out, including forming bottom surface to required levels for foundation of pole/stay etc complete all as specified.

Returning, filling trenches including spreading, levelling, watering and well ramming in layers n. exc. 25 cm thick complete all as specified and directed.

Removing of excavated material (soil) to a distance n. exc. 50 Mtr and dispositing where directed at a level n. exc. 1.50 Mtr above the starting point complete as directed.

M & L Sand cushioning to UG cables (8cm deep before laying of cable and 15 cm deep over the cable). Note :- Punned thickness only will be considered for payment.

supplying and laying un-reinforced precast concrete cable cover , class HV, Type 1, flat, size 300mmx180mmx40mm

All per item No 16 herein before but class LV, Type 1, flat, size 250mmx150mmx40mm

Supply and fix cable jointing kit for 11 KV grade cable for outdoor termination , heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 120 Sqmm complete all as specified and directed

Supply, install, testing and commissioning and testing factory made and tested (including CPRI type test certified) LT feeder pillar box (KIOSK) out door type, 3 mm thich, IP-54 protection, platform mounted, suitable for 415 Volts 3 phase 4 wire, 50 Hz AC supply system. The scope of work includes provision of the following :-

Incoming :- (a) MCCB 315 amps, 4 pole, 36 KA (Ics = 100% Icu), with adjustable thermal & adjustable magnetic setting, 50 Hz, 415 volts grade - 01 No.

(b) Bus bar (Aluminium strip) 800 Amp, 4 pole, not less than 30cm long mounted on insulators for incomming supply - 01 (set of four)

(c) Digital volt meter, Amp meter with rotary switch complete. - 01 set.

(d) LED type Neon indicating lamps (R, Y & B) -01 Set.

Out going :- (a) MCCB 200 amps, 4 pole, 25 KA (Ics =100% Icu), with adjustable thermal & adjustable magnetic setting, 50 Hz, 415 volts grade - 02 No.

(a) MCCB 160 amps, 4 pole, 25 KA (Ics =100% Icu), with adjustable thermal & adjustable magnetic setting, 50 Hz, 415 volts grade - 01 No.

M&L Earthing complete as per electrical plate No 3 of MES SSR Part I with galvanised steel plate earth electrode 60 cm x 60 cm x 6mm, burried directly vertically in ground in a pit of depth not less than 2.25 metres below ground level with the top edge of earth plate at a depth not less than 1.5m below normal ground level connected to and including galvanised iron strip 32 x 6mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel earthing wire protected by galvanised iron or steel pipe 40mm bore light grade and connected to continuous earth wire on pole/ test point. Watering pipe shall be 20mm bore GI medium grade including excavation and earth work in any type of soil, chorcoal, salt, funnel, PCC pit and RCC cover complete all as specified and tested complete.

M&L earth continuity conductor or main lead fixed to wall on batten or recess or chases or buried in ground drawan in conduit/ pipe or fixed to poles or any other indicated situation for lopp earthing etc as required 32x6mm galvanised iron strip complete all as specified.

S&F and lay and testing cable XLPE insulated screened, galvanised steel strip or wire armoured, electric cables (heavy duty) with stranded aluminium conductor 1100 volts grade of size 3.5 core 185 sqmm complete all specified and directed.

BASANT RAM AND SONS

KUKREJA BROTHERS

Microsys Controls India

D S Enterprises