PROVN OF SERVO VOLTAGE STABILIZER AND ISOLATION TRANSFORMER FOR NFS BUILDING AND PROVN OF LIGHTENING ARRESTORS FOR CERTAIN OTM BUILDINGS AT AF STN SALUA UNDER GE (AF) KALAIKUNDA

Amount

Supply, install, testing and commissioning of Servo Controlled Voltage Stabilizer for automatic operation, three phase naturally oil cooled indoor type & designed for input variation between 340 V to 460 V with output voltage stabilized at 415 with accuracy ± 2.5% and speed of correction 8 Volts per second and of capacity 150 KVA complete all as specified and as directed. Specification are as under :- (a) Confirm to BIS 9815 (pt-I) 1994 reaffirmation 2019 latest version. (b) Type- Suitable for unbalanced load and unbalanced input. (c) Input Voltage - 360V-480V, input frequency -50HZ. (d) Output Voltage - stablilized at any designed/desired voltage 415/+-1% (e) Rated Frequency -50 Hz (f) waveform distortion - Nil (g) Response Time - Not to excess 20 mili second (h) Sensitivity - (+/-1%) (j) Rate of correction - Not less than 6V per second between phase and neutral. (k) Efficiency - more than 90 %. (l) Type of load - Three phase unbalanced type. (m) Metering - Digital display Voltmeter /Ameter with multifunctional meter.

(n) Operatin Temperature - for indoor use upto max ambient temperature +55 degree celcius. (o) Class if insulation - Class F. (p) Mode of Operation - Automatic / Manual (q) Winding Temperature rise - Max 55 degree celcius (10 degree above operation temperature) (r) Transformer Oil - IS 335 marked. (s) Core - CRGO M4 grade /CRCO (Cold roll grain orient) / Cold rolled non oriented. (t) Losses - as per IS norms (u) Auto transformer (Variac) -100% copper wound Electrolytic grade. (v) Power factor - not less than 0.95 (w) Protection- (i) Overload protection (ii) Short Circuit protections (iii) HIgh / low Voltage cutoff (iv) Bypass arrangement in case of emergency. (v) Single phase sequence change / phase fail protection. (vi) Earth fault protection (x) Standard fitting and acessories i.e Marking plate, lifting lugs, CI rollers, Earthing terminals, Cable box etc. Note :- Specification given in thi item shall be supersede the specification mentioned in Particular Specification.

Supply, install, testing and commissioning of 150 KVA, 415/415V (Fixed Ratio), 3 Phase, 50 HZ, onan cooled oil immersed copper wound Indoor type Isolation Transformer complete with first filling of IS: 335 ISI marked filtered & dehydrated transformer oil electrostatic shield between primary 415V in delta connected & secondary 415V in star connected complete & other standard fitting/ accessories with vector Group Dyn-11. complete all as specified and as directed. Make - Vinitech Electronics (Volina)/ Indian Transformers and Electrical (ITE) / IECO

M&L for Advance encapsulated Maintenance free low carbon high tensile with pure electrolytic copper molecularly bonded Chemical Earthing Rod, dia 17.2mm * 3000mm solid MS Copper bonded rodwhich should be having tensile strength 650 - 700 (N/mm2) & as per UL. The material must be tested from CPRI & as well as from ISO certified LAB as per IEC/EN 62561-2 & Normative reference: (IEC 6957, 60068-2-52). The material must be tested Salt mist test conducted in accordance with IEC 60068-2-52:1996. CB Terminal must be with the Rod for the connection. The annular space between the pipe and strip to be filled up with Compact fill (CF) (Crystalline Conductive) mixture. The job includes excavation of pit in any type of hard dense soil/ disinterigated rocky strata of size 1000 mm x 1000 mm x 3050 mm depth and taking out all excavated soil, lowering and placing copper electrode in centre of pit and filling of back fill compound having excellent moisture retaining capacity in sourrounding of electrode in 400 mm dia all around the electrode( Min 5 bags of 25 Kg each of back fill compound graphite base per pit per unit to be fill or more quantity of BFC if required to achive less than one ohms). The remaining portion of earth pit to be filled with agriculture soil / black cotton soil free from stones etc to be bring from out side defence land . The earth pit should be provided with a FRP earth pit cover for protection and safe guard of terminals. The material of earth electrode should have good electrical conductivity & anti corrosion property in wide range of soil conditions. The job also include M & L for in PCC(1:2:4) type B1 around the FRP cover for support and foundation and colouring the PCC work with desired colour.complete all as specified and as directed.

NOTE: 1) The quantity of BFC indicated above is generally for normal/good soils.In case the soil resistivity is high , the quantity of BFC should be increased & cost of the same is deemed to be inclusive in the quoted rates. 2). If the desired earth resistance not obtained the earthing shall be re-done by contractor without any extra cost to Govt . 3). Removal of excavated soil and filling of agriculture soil brought from out side defence land shall be included in the overall rate quoted.

Supply install and commissioning of Multi-Cavity Power-free automatic erosion feed enabled water sanitizer / conditioning treatment station with proportional dosing arrangement consisting of, Receptacle with following attachments: Water Inlet Regulator, Overflow Vent, Water Outlet Regulator with non-return valve (for standalone gravity flow), Water Outlet Regulator (for offline automated gravity flow), Drain valve, Fluid Level controller, Sludge Level Guage, Station Base Assembly with Station Base Buffer, Station Hood Assembly with multi-cavity arrangement (11), Station Holding Assembly, Material of construction: Non-metallic thermoplastic, Maximum Temperature: 45°C, 100 Ltr. Tank, In-built Level Switch & Processor, ½ inch Processor Outlet & Processor Inlet connections, Flexible Connecting Duct, Material of construction: Non-metallic, Cavities are complete with Lids. Compatibility: Stequa 411 AE Refill with all assessary complete all as specified and as directed.

Supply only plastic cylindrical sealed disposable sanitiser refill containing solid Chlorine for disinfection of drinking water, water with arrangement for controlled release of disinfectant in water, suitable for operation through recommended dosing system. Replacement indication: visual & weight variation, Water contact orifice design: Sealed when dry, exposed upon immersion, Operation type: Non-contact, non-inhalatory, Cylinder dia: 2.5 inches ± 0.5 inches, Cylinder height: Minimum 10.0 inches ± 0.5 inches complete all as specified and as directed. Make: Declibac or equivalent

M&L point wiring complete using 1.5 Sqmm PVC insulated sheathed copper conductor, stranded cable (FRLS) upto and incl working voltage 1100 Volts grade, ISI marked, drawn in to PVC casing capping incl all accessories as bend,tee,junction boxes elbows etc incl pressed steel terminal sunken boxes of size 1.2mm covered with 3mm thick plastic laminated sheet ISI marked top cover fixed with Brass screws and sheathed copper conductor stranded cable(FRLS) earth continuity wire connected to DBs/sunken boxes/fittings of size 1.5 Sqmm Cross sectional area and all other metal parts with earth dolly for one wall mounted fan point point controlled by one switch 5 Amps complete all as specified and as directed.

S&F Switch piano Flush, type single pole, one way 5 amp complete all as specified and as directed.

S&F Ceiling rose in poly carbonate 3 plates flush type 6 Amps, 250 volts AC ISI marked,complete all as specified and as directed.

S&F wall mounted fans AC single phase 230/ 240 V of size 400 mm sweep with louver complete all as specified and as directed.

S&F anti suicide fan rods tested at Govt of Indian's MSME Labs having length of 10" and suitable for any brand of ceiling fan, if the load of fan exceeds 22 Kg, the smart rod/ pipe opens from its centre and spring in the pipe expands automatically including taking down of ceiling fan and refixing the fan after replacement of old fan rod with antisuicide fan rod complete all as specified and as directed.

S&F ESE LA (Early streamer emission lightning arrester) with 79 meter radius at 5 meter height with level 1 protection level as per NFC 17 192 : 2011 through OEM service incl base plate for fixing and 03 nos guy wire for supporting the antenna mast complete all as specified and as directed.

S&F electromechanical 6 digit with IP65 protection strike counter for counting the no of strikes arrested by the Lightning Arrester all as specified and as directed.

M&L Earthing in repair/replacement of copper earth plate electrode 60×60cm.× 3.15mm 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 galvanised earth lead iron strip 20x3 mm by means of bolts, nuts, check nuts and washers of copper/brass all as shown in electrical plate No. 5 connected to earthing test point all as specified or indicated and necessary excavation and earth work PCC (1:3:6) type C-1 with suitable size of CI cover plate with angle iron frame and opening arrangement ) incl providing charcoal or coke and common salt in alternate layer of 15 cm compacted thickness all around the earth electrode with funnel and 20 mm bore galvanized iron watering pipe ( light grade) wire mesh, copper lugs, completed thickness all around the earth electrode with funnel and 20 mm bore galvanized iron watering pipe wire mesh, copper lug, complete in all respect, Copper earth wire protected by 40 mm bore (medium grade) galvanized iron pipe and other and connected with main switches board or earthing test point as directed, incl disposal of spoil to a distance not exc 50 mtr and necessary testing on completion complete all as specified and directed.

S&F brass copper lightening arrester 9.2 mm diameter and 915 mm in length with 5 spikes and base plate 8.5 x 8.5 cm for building protection coverage of 45 degress from the top point 1.85 m all as specified and directed.

S&F copper strip 20 x 3.15mm with percelin saddles at a span of 0.5 m and fixing screws etc. for roof conductors and down conductors above ground with connection arrangement to earth termination rod etc all as specified and as directed.

S&F Test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw fixed in the cover box made up of 3.15 mm Gi sheet with hinged door and locking arrangement duly painted with one coat of silver synthetic enamel paint over two coats of red oxide primer.

STAR ENTERPRISES (BID ID -3200325)

Lotas Engineers (BID ID -3202209)