| 1 | Supplying, erecting, testing and commissioning Raising and Lowering type (min 16 Metre height high mast system hot dip galvanised inside and outside) in single dip, suitable for wind velocity as per IS 875 part 3 with only one longitudinal seam weld per section but without circumferential weld including accessories viz head frame, 2 point suspension system with steel wire rope 6mm dia 7/19 gauge, double drum winch, galvanised lantern carriage arrangement suitable for and with 8 nos luminaries symetrically lightning finial, LED aviation obstruction light of 9/10 watt, lighting arrestor spikes, foundation bolts, nuts, anchor plates, templates, trailing cable and integral power tool for raising and lowering operation of high mast with and including following technical specifications :- (a) High Mast System, Height of Mast - min 16 mtr, No. of sections - two material construction - S355 grade as per BS-EN10025, Base dia and top diameter (A/F) - 360mm and 150mm respectively, Plate thickness : Top - 3mm, Bottom - 3mm, Cross section of Mast - 12 side polygon, standard for of galvanisastion - As per BS EN ISO 1461/BS729/IS2629.(b) Size of opening and door at base - 1200mm x 250mm, Diametre of base plate - 520mm, Thickness of base plate - 25mm, Lightning protection finial - GI single spike, Max wind speed - 50 m/s as per IS 875 (Part-III), Number of foundation bolts - 6 Nos, PCD of foundation bolts - 445mm, Type/diameter/length of foundation bolts - TS 600/24 mm dia/850mm long Diametre of carriage ring (mm) - 535mm (ID) minimum Construction - 8 arm welded 2 sections, Load carrying capacity 8 Lumminaire (c) WINCH/POWER TOOL Type/SWL of winch Double Drum / SWL 350 Kg, Method of operation - Integral Motor, Motor Capacity - 1HP Three Phase, No. of Speed - 6 Pole, Single Speed - 128.02 (d) STAINLESS STEEL WIRE ROPE grade/Construction - AISI304.7/19 Construction No. of Ropes - Two continuous Diametre (mm) - 5mm, Braking load capacity (min) - 1450 Kg x 2128.04.Note : All as per manufacturer recommedations (e) FEEDER PILLAR Powder coated CRCA steel sheet feeder pillar for outdoor application with 63 amp four pole MCB incomer, Nature switch, 16 amp, 420 volts suitable for automatic switching ON and OFF of the luminaires, 9 Amp two contactors and raise lower push buttons for motor operation, incoming terminals of 50 Sqmm and outgong terminals of 16 Sqmm for power cable and 2.5 Sqmm for motor mounted on suitable foundation (f) FOUNDATION - Construction of suitable shallow foundation with M20 grade concrete for high mast consdering the state soil bearing capacity at site as 10T/Sqm at 2 m depth. (g) TRAILING CABLE - PVC insulated PVC sheathed 1100 volt grade ISI marked multistranded copper conductor cable 6 core 2.5 sqmm. (h) FLOOD LIGHT LUMINAIRE - Eight number LED flood light luminaires having a nominal system lumen output of minimum 15000 lumens at a minimum system efficacy of 100 lumens per watt and total power consumption not more than 150 watt includin driver, it has a rated sytem life time of 50000 burning hours at L70 and should have a color temperature of 6500 K, CRI>80, THD<10% and PF>0.95 complete & surge protection not less than 10 KV.(j) Automatic light control switch with infrared sensor based Nature Switch & voltage monitoring luminance level for Switching ON is < 30 Lux and for Switching OFF > 10 Lux.The Sensor should also have night operation facility of min. 4 hrs to max 12 hrs. VMS should have adjustable Over & Under voltage trip level and protection against Phaseloss, Neutral Loss & mountable enclosure made of Rust Proof, Electric Shock Proof, Terminate proof and FR grade SMC junction box conforming to IP54.The circuit should also have provision for Manual Operation (i.e sensor & VMS By-Pass option) with 3 nos. Contactors, 3 nos. Incoming MCBs & 3 nos. Outgoing MCBs of 16-20 Amps each & Circuit Wiring complete all as specified and directed. |
