PROVN OF 400 KVA TROLLEY MOUNTED STANDBY TRANSFORMER FOR GOA MIL STN UNDER GE PANAJI

Supply, installation, testing and commissioning of step down transformer, outdoor type, and conforming to IS 1180:2014 (Part 1) amendment 4 of March 2021, plinth mounted, HT 11 KV/433 volts, 3 phase 4 wire, 50 Hz, delta/star connected, vector group DYN-11 double copper wound, ONAN cooling, manual type off load tap changing facility on HT side to vary secondary voltage from minus (-) 7.5% to plus (+) 7.5% in 7 steps of 2.5 %, continuous rating of capacity 400 KVA Level-3 including Cable entry box on HT Side and Cable entry box on LT side. The Transformer shall be completed with all standard fittings and accessories, gauges, first fill of transformer oil IS 335 ISI marked filtered & dehydrated oil etc, complete all as specified and directed and comprising of the following accessories :- (a) One cable entry box on primary HV side having cable glands suitable for HT XLPE Cable (consisting of 3 Nos porcelain HT bushings with brass/gun metal bushing rods complete with nuts and washers). (b) One cable entry box on secondary (LV) side consisting of 4 Nos porcelain bushing with GM bushing rods complete with GM nuts, and washers with one No cable gland suitable for reception of outgoing LT armoured cables of suitable size. (c) Oil conservator tank with filter type, drain valve and oil level gauge. (d) Dehydrating breather with first fill of dehydrating agent. (e) Thermometer pocket on tank cover. (f) One No 100mm dia dial type thermometer vapour pressure type having range 0-120 degree centigrade with temp reading pointer, max temp indicator and resetting device.

(g) Rating plate with terminal markings. (h) Two earthing terminals on tank/tank cover to facilitate fixing of 32 x 6m GI earth strip. (i) Oil Level gauge. (j) Oil drain and filter valves. (k) Oil filler hole with cap/plug with connections complete. (l) Lifting lugs. (m) Air relief valve plug. (n) Four plan solid cast steel detachable rollers. (o) First fill of fresh oil conforming to relevant IS and tested upto 50 KV dielectric strength upto top of core. (p) Extra bushing for neutral outside the LT cable box for providing independent earthing for neutral. (q) Any other fittings/accessories so as to confirm the whole transformer to IS-1180 Part-I:2014 and Amendment No 4 of Mar 2021, Level-3.

Supplying, laying, jointing, testing and commissioning HT under ground electric power cable Crossed linked polyethylene (XLPE) insulated, screened PVC bedded, galvanised steel strip or wire armoured electric power cable (heavy duty) with aluminium conductor, 11000 Volts grade suitable for earth system of 3 core 95 Sq mm cross sectional area size, ISI marked as per IS 7098 Part-2, laid in trenches/ laid under floor/ laid in ducts or fixed on poles etc. complete all as specified and directed.

Supply and laying of cable XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty ) 1100 volts grade with stranded aluminium conductor of size 400 sqmm 3 1/2 core laid above the trolly in the maintenance chamber etc. complete all as specified and directed.

Supply and laying of cable XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty ) 1100 volts grade with stranded aluminium conductor of size 150 sqmm 3 1/2 core laid above the trolly in the maintenance chamber etc. complete all as specified and directed.

Supply and fix end jointing kit for 11 KV grade cable for Indoor/out door termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of size 120 to 185 sq. mm complete all as specified and as directed.

Supply and fix heat shrinkable End termination kits and accessories of Outdoor/indoor 400 Sqmm 3.5/4 core cable jointing kit for 1.1 KV grade cable complete all as specified and directed

Supply and fix heat shrinkable End termination kits and accessories of Outdoor/indoor 150 Sqmm 3.5/4 core cable jointing kit for 1.1 KV grade cable complete all as specified and directed by Engr-in-Charge. Note :- Rate for the excavation, returning filling and removing of the earth work and provide labour and Electrician shall deemed to be included in the quoted price, not extra be paid for this items.

M&L of installation and testing digital grounding device mobile transportable earthing pits single phase (set of three electrodes to be used as grid for equipments building earthing comprising of 2100 mm long,300 mm vertical and 1800 mm horizontal in L Shape) GI pipe heavy grade of 50 mm dia electrode filled with high conductivity material. The horizontal portion is further encapsulated in 150 mm dia heavy grade GI pipe filled with 35 Kgs of externally low sensitivity soil enhancement material ASEM GB, for efficient conduction of fault current 03 set of electrodes. Each electrode is supplied with one PVC insulated 50 Sqmm copper cable with lugs at both ends qty 3 bond MS distribution box to each other complete as per manufacturer technical specification complete all as specified and directed by Engineer-in-Charge. Make: product No GIG no 1516905,Vo cab no 1100/UAA/ECA-3G LP-13.20 in DHRUVA TECHNOLOGIES Pvt Ltd or equivalent in DEHN GAURD ASHOK SAFE EARTHING/PRAGATI/JP. Note:- (i) Each digital grounding device mobile transportable earthing pits single phase shall be filled up with high conductivity salt and ASEM-GB (duly certified NABL Lab) back fill compound for filling bore holes space between two pipes. (ii) Excavation into trenches for installation of mobile earthing including poly pit cover(cost of poly pit chamber with poly plastic pit cover shall be deemed to be included in the rate quoted) (iii) Copper cable beyond test point shall be measured and paid separately.

Supply and fix PVC insulated multistranded copper cable of size 70 sqmm single core both ends thimble properly with copper Lugs, complete all as specified and as directed by Engr-in-Charge. Note :- Cupper thimble shall be measured and paid separately.