PROVISION OF CERTAIN E/M WORKS FOR COMMUNICATION ENTITIES OF KU-BAND SATCOM, C-BAND SATCOM, DCN, SDR AND AFNET EQUIPMENT ROOM AT PORT MOUT AND PROVN OF CONFERENCE TABLE AND CHAIRS FOR SETTING UP MINI CONFERENCE HALL FOR NAI (DOLLYGUNJ) UNDER GE MINNI

Excavation in soft / loose soil not exceeding 1.5 mtr wide and n exc 1.5 mtr depth and getting out incl forming of bottom for laying cable all as specified and directed

Returning filling using excavated soil including spreading leveling, watering and well ramming in layers n exc 25 cms all as specified and directed

Removal of surplus excavated material n.exc 50 mtrs and depositing where directed at a level n.exc 1.5 mtrs above the starting point all as specified and directed

Supply installation, testing and commissioning of Servo controlled voltage stabilizer (confirming to BIS 9815(Part-1)1994: with 1 filling of Transformer oil upto level having following specification: - a) Capacit 300 KVA b) Type Suitable for unbalanced load and unbalanced input (c) c) Input voltage 360V-480V, Input frequency 50 Hz (d) d) Output voltage stabilized at any deigned/desired voltage 415/+-1% e) Rated frequency- 50 Hz f) Wave form distortion – Nil g) Response time not to exceed 20milli seconds h) Sensitivity-(+/-)1% i) Rate of correction-Not less than 6 Volt second between phase and neutral j) Efficiency more than 95% k) Type of load-three phase, unbalanced type l) Metering-Digital display Voltmeter/Ammeter with multifunctional meter

m) Operating temperature -For indoor use upto max ambient temp +55°C n) Dimmer rating-300 Amp o) Dimension of tank-75x35x45 in inches p) Oil Capacity -510 Itrs approx. q) Class of insulation-Class F r) Mode of operation Automatic/manual s) Winding Temperature rise Max55°C (10°C above operating temp) t) Transformer of IS 335 marked u) Core-CRGOM4Grade/CRMO (Cold Roll Grain Oriented)/ (Cold Rolled Non- Oriented) v) Auto transformer (Variac)-100percent Copper wound Electrolytic Grade w) Losses-As per IS Norms x) Power Factor-Not less than 0.95 y) Protection- (i) Overload protections (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 (aa) Standard Fitting & Accessories e.g Marking plate, lifting lugs, CI Rollers, Earthing Terminals etc cable box.

Supply testing, installation and commissioning of 300 KVA isolation transformer, 3 Phase, outdoor type, copper wound, oil cooled, class of insulation H, metallic body duly powder coated as per IS 9815 and 2026, designed for input voltage range $415 \pm 5\%$ and output voltage range $415 \pm 5\%$, Ratio 1:1, vector group: Dyn 11, delta-star with first filling of transformer oil of requiste dielectric strength upto level, efficiency more than 95%, separate neutral bushing shall be brought out for earthing.Potential difference between neutral to earth less than 1 Volts with all standard fittings like digital temperature meter,adequate number of cooling radiators, lifting hooks one set, earthing terminals 2 nos complete with over load/ short circuit protection. ,complete all as specified and directed by Engineer-in-Charge.

Supply, laying and testing cable XLPE Insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 3.5C X 120 sqmm complete all as specified and directed.

Supply, laying and testing cable XLPE Insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 3.5C X 95 sqmm complete all as specified and directed.

Supply & laying Telerex DWC (Double Wall Corrugated) HDPE pipe ISI marked of outer dia of 110 mm and inner dia 95 mm polyethylene including couplers, bends, cap etc., with smooth internal and profiled external surface for non pressure under ground cable complete all as specified and as directed.

Supply install, test and commissioning LT Feeder Pillar board (CPRI Approved) cubical type Outdoor Confirming to IS 8623 Part 1 1993 factory fabricated made out of 3.15mm thick CRCA sheet & suitable size to accomodate all accessories/fittings, compartmentalized in construction with TPN Cpper bus bars of rating not less 1.5 times the rated cap of incomer MCCB and outgoing feeder. i) Change over switch 3phase 400 Amps, 35 KA, 440 Volts - 0 Nos ii) MCCB FP 400 Amps, 35 KA, 440 Volts - 01Nos (incomeing) iii) MCCB TP 200 Amps, 25 KA, 440 Volts - 03 Nos (outgoing) iv) MCCB 63 Amps 25 KA TP 440 volts - 03 Nos (outgoing) v) MCB SP 32 Amps 230 Volts - 02 Nos (outgoing) vii) Indicating RYB Lamps LED Type-03 Nos (v) DIGITAL AMMETER,230V AC,MAKE-SECURE -01 No (vi) DIGITAL VOLTMETER,230V AC,MAKE-SECURE - 01 No (vii) Mulfuction Meter -01 no, RESIN CAST CT, MAKE-KAPPA - 03 Nos