PROVN OF AUTO CHANGE OVER TIMER CIRCUIT FOR ACs AT CERTAIN LOCATION AND QTY 01 ISOLATION TRANSFORMER AND ALLIED WORKS FOR NFS AND AFNET SITE AT AFS KUMBHIRGRAM WORKS FOR NFS AND AFNET SITE AT AFS KMBHIRGRAM

Amount

Excavating in trenches n exc 1.5m wide and n exc 1.5m deep and getting out in soft / loose soil complete all as specified and directed.

Returning, filling in, including spreading levelling watering and well rammming in layers not exceeding 25 cm in depth complete all as specified and as directed.

Removing surplus soil to a distance not exceeding 50 mtr and depositing where directed at a level not exc 1.5 mtr above the starting point complete all as specified and as directed

Supply and spread fine dry river sand 23 cm thick layer for cushioning of cables laid in trenches, leveling, watering, punning to 18 cm from 23 cm by compacting all as directed. (Punned depth shall be measured and paid)

Supplying and laying unreinforced precast concrete cable cover ISI marked, Class LV, type I, flat size 250mm x 150mm x 40mm duly embossed with "LT CABLE 1100 V" all as specified and as directed.

Supply and fixing of earth continuity conductor or main earthing lead 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 for 32X6mm copper strip complete all as specified and directed.

Supply, laying and testing cable XLPE insulated, armoured heavy duty electric cable with aluminium conductor, 1100 volts grade, cross-sectional area 95 sq mm 3.5 core complete all as specified and directed.

Supply install, testing and commissioning of Isolation transformer of 100 KVA capacity 3 phase, 50 HZ, Indoor, copper wound, oil cooled, class of insulation A, metallic body duly powder coated designed for input voltage range 415 (+/-5%) and output voltage range 415 (+/- 5%), Ratio 1:1, vector group: Dyn 11, Delta-Star with first filling of transformer oil of requisite dielectric strength uo to level, efficiency more than 95%, separate neutral bushing shall be brought out for earthing potential difference between neutral to earth less than one volt with all standard fittings like digital temperature meter, adequate number of cooling radiators, lifting hooks one set, Earthing terminal two nos complete along with necessary bypass arrangement in case of emergency. Testing as per BIS 9815 and 2026.

Supply, Install, testing and commissioning of 100 kVA Servo Voltage Stabilizer (confirming to BIS 9815: part-1:1994 reaffirmation 2019 latest version), 3 Phase, 50HZ, Naturally oil cooled, Indoor, unbalanced type, copper wound, metallic body duly powder coated with lifting hooks four nos, digital display type relay free smooth and silent operation with 1st filling of transformer oil (ISI marked) up to level having following specification: (a) Input voltage: 360V - 480V (b) Output voltage stabilizer at any design/desired voltage 415V (+) or (-) 1% (c) Rated frequency 50HZ (d) No distortion in wave form. (e) Response time not to exceed 20 milli seconds (f) Sensitivity (+) or (-) 1% (g) Rate of correction 8Volts / Seconds for single phase and 13V / Seconds for phase to phase (h) Efficiency more than 95% (i) Type of load: 3Phase, unbalanced type. (j) Digital display voltmeter / Ammeter (k) Insulation class - 'F' (l) P.F not less than 0.95 Protection:- (a) Overload / Short circuit protection. (b) High / Low voltage cut off (c) By pass arrangement in case of emergency (d) Single phase sequence change protection/phase fail protection. (e) Earth fault protection.

Earthing complete with galvanised steel earth plate electrode 60×60cm×3mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, connected to copper strip by means of bolts, nuts, check nuts and washers of brass/copper all as shown in electrical plate No. 3 connected to earthing test point all as specified or indicated including testing on completion

Supply, installation, testing and commissioning of timer circuit for auto change over in multiple air conditioner of digital type AC timer for any two type of Air Conditioner. Each AC can be kept on from one hour to 24 hours. AC on condition to be shown by their respective display. After the set time of the first AC is over the Second AC will turn on. Digital timer should be with micro controller based technology with LCD/LED Display. Delay time 3 min or below 3 min. AC1/AC2 on showing on display. Two heavy duty sturdy relay with heavy duty 30 Amps-30 Amps with connector. Each capable to take load up to 2 Ton Window/Split AC with Auto/Manual facility. It has to be shown balance time and set timer AC1/AC2 manual facility.

All as per Ser No 11 but 3 AC timer.

M&L for PVC casing caping of size 25MM and required size two run of 2.5 sqmm PVC insulated multistranded copper conductor cable with one run of 2.5 sqmm PVC insulated copper conductor cable as continuity earth wire, in PVC Casing caping including all necessary fittings all as specified and directed

M&L for PVC casing caping of size 25MM and required size two run of 4.0 sqmm PVC insulated multistranded copper conductor cable with one run of 4.5 sqmm PVC insulated copper conductor cable as continuity earth wire, in PVC Casing caping including all necessary fittings all as specified and directed

M/S G D CONSTRUCTION (BID ID -3266186)

R K ENGINEERING ASSEMBLE (BID ID -3266609)

KUNDAN ENGINEERS AND BUILDERS (BID ID -3266683)