Construction of Improvement and Beautification of Natural basin at Sammu Tal Tehsil Bhoraj Distt. Hamirpur H.P (SH- Providing 9 meter long Solar high Mast Light System thereof)

Supplying, installing, testing, and commissioning of a 9-metre long hot-dip galvanized (minimum 65-micron sided polygonal high mast structure, designed for a basic wind speed of 180 km/h, fabricated from S355 grade steel as per have a bottom across-flat (A/F) diameter of 410 mm, a top A/F diameter of 150 mm, and a uniform wall thickness of 3 mm, BS EN 10025 and galvanized in accordance with BS EN ISO 1461, with a designed service life of 25 years. The mast shall frame and luminary carriage suitable for mounting six (6) high-power LED floodlights, six (6) solar photovoltaic (SPV) manufactured in a single section with integrated raising-lowering winch system. The mast shall be equipped with a head modules, and six (6) LFP batteries on top. The mast base plate shall have a diameter of 580 mm and thickness of 20 mm, with six (6) foundation bolts of 25 mm diameter and 1000 mm length, conforming to TS 600 grade steel complete in all respects, including all accessories, terminations, interconnections, earthing, testing, commissioning, and handing over to the satisfaction of the Engineer-in-Charge and including five years comprehansive warrantee for repair & replacement. Makes: Navaid Energy/ SUNROVER /EXEGI/HPL/TATA/Twinkle/ Jindal as approved by Engineer

Lighting System: luminary shall be 60W DC operated, IP65 or higher, utilizing SMD Cree/Osram/Philips/LG/ Samsung / Refond / Everlight / Seoul / Bridgelux make (or equivalent), with minimum LED efficacy of 130 lm/W (LM-80) and luminary efficacy of 100 lm/W (LM-79), CRI≥ 70, CCT between 5500-6500 K, and minimum luminous flux of 6000 lumens. LEDs shall be ≥1 W each, mounted on MC-PCB with thermally conductive material for efficient heat dissipation, housed in aluminium body with inbuilt LED driver and charge controller in back box, powder-coated metallic finish, and stainless steel mounting hardware.

Solar PV Modules: The system should comprise of six (6) MNRE/ BIS-approved multi/mono-crystalline solar photovoltaic modules, each rated at 170 Wp with a nominal voltage of 12V, offering a minimum module efficiency of 19% and consisting of 32 cells per module. Each module features an open-circuit voltage (Voc) of 24.64V and a maximum power voltage (Vmp) of 19.88V. The modules should be mounted on a hot-dip galvanized structure with a 65-micron coating for enhanced durability.

Battery Bank: Six (6) BIS-approved LiFePO4 batteries, each rated 12.8V, 90Ah, with minimum individual cell capacity of 3.2V, 15Ah (cylindrical or prismatic). The battery shall be enclosed in IP-21 weather-resistant enclosures with sophisticated BMS protection for overcharging, overheating, and deep discharge. Battery cycle life ≥ 2000 cycles at 80% DOD.

Solar Charge Controller: MPPT type, BIS/IEC compliant, rated 20A at 12V, with >95% efficiency, temperature compensation, and protections against surge, overcharge, deep discharge, overload, reverse polarity, and reverse current at night. Indicators: Green (charging), Red (load on), Red blinking (battery low).

Raising & Lowering Mechanism: Heavy-duty double-drum manual winch (gear ratio 21:4C.D., SWL 750 kg, self- lubricating) installed inside the mast, with AISI 316 stainless steel wire ropes (6 mm diameter, 7/19 construction, minimum breaking load 2200 kg × 5), supported by locking arrangement and pulley system for safe maintenance and panel cleaning.

Foundation: RCC foundation 1.5 m deep (single column of 900 × 900 × 1500 mm) with a 1.0 m high pedestal above ground level, finished with decorative pedestal (900 × 900 × 1500 mm). Foundation to include all concrete, shuttering, reinforcement, curing, and backfilling.

The system should feature automatic dusk-to-dawn operation with a minimum autonomy of two days (24 operational hours without sunlight), and should be equipped with a 1 m GI single-spike lightning protection finial, all stainless-steel hardware and fasteners, and an integrated weather-resistant enclosure housing the CCU and battery. Maintenance should be facilitated through a lockable mast door of at least 1200 × 250 mm. The warranty coverage shall be 5 years for solar PV modules, luminaires, mast structure, winch, and wire rope, and 10 years for LiFePO4 batteries.