Supply installation testing and commissioning of 03 nos. Centrally-Locally Operable, LAN/GSM/ WiFi /Radio Based single phase Brushless Motorized Air Raid Siren System at IIT Kharagpur.

Supply of Siren Motor and Blower Assembly

Supply of industrial type siren to cover critical urban zones (each covering ~ atleats 7 km² or higher), Audible Range-5KM or higher(DIAMETRICALLY), Siren Type- Motorized Horizontal/Vertical, Sound Pressure Level(SPL)-150 dB or higher @ 1 meter, Resulting SPL - 105 dB or higher @ 2.5 km, Effective Range - 2.5 km radius or above (urban attenuation considered), Operating Temp - -10 deg Celcius to +75 deg Celcius, Humidity Conditions- upto 98%, Tone Capability- 4 tones: Steady, Wailing, Pulsating, Fast Wailing, MOTOR DESIGN COMPONENTS: Motor Type - Single Phase Brushless, maintenance-free induction motor, Motor Capacity- 2HP or higher, Motor RPM- 2800-3000 or higher, Power Supply - 220–240 V AC single-phase, 50 Hz, Mounting - Roof mount with anti vibration fixtures & anti-vibration pads for wind resistance up to 180 km/h, Body - Alluminium Casting as per IP-65 or higher. BLOWER DESIGN COMPONENTS: Rotor / Impeller feature: Material- Cast Aluminum or Steel (anti-corrosive coated), Outer diameter - 300–350 mm (depending on number of ports), Number of blades/ports- 10–12 uniformly spaced, Blade profile- Curved radial blades, centrifugal discharge, Speed ~ 2800-3000 RPM or higher, Stator Casing- Powder coated MS or SS304, Rotor/Impeller- Cast Aluminum Alloy Balancing- Dynamically balanced to minimize vibrations, Ported Casing, Stator >10 ports, Rotor (Impeller) >10 Blade, Sound diffuser- MS/Aluminum Horn, Sound Pattern Intermittent/continuous tone control via RPM, Cooling Natural air cooled, Installation height ≥10 m on pole/tower/building rooftop, Mounting Hardware - 3 Nos. Vibration-isolated wall/pole mounts, Brackets, bolts, anchor, fasteners etc as required. Warranty 01 years.

SITC of Cable and Cable tray

Supply of 3 Core 4 sqmm Armored Solid Aluminum conductor, balance stranded conductor, XLPE Insulated, cores laid up, PVC tape/Extruded Inner sheathed for Multicore Cables, Armour Glavanised wire, extruded PVC Type ST2 sheathed, 650/1100V grade as per IS 7098(Part 1) 1988.

Laying and fixing of one number of 3 Core,4 sqmm armoured PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade on the wall surface as required.(clamped with 1mm thick saddle)

Supplying and installing 100mm Width X 50mmDepth X 1.6 mm Thickness size of perforated Hot Dipped Galvanized Iron cable tray (Galvanization thickness not less than 50 microns) with perforation not more than 17.5%, inconvenient sections, joined with connectors, suspended from the ceiling with G.I. suspenders including G.I. bolts & nuts, etc. as required.

Laying and fixing of one number of 3 Core,4 sqmm armoured PVC insulated and PVC sheathed / XLPE power cable of 1.1 KV grade of following size on cable tray as required.(clamped with 1mm thick saddle)

Supply of Siren Controller, Local Panels, Communication Hardware & desktop PC based GUI Interface

Installation Testing Commissioning of Item No. 1,2,3,4

Installation, Testing & commissioning charges for item no. 1,2,3,4 Including INSTALLATION & COMMISSIONING OF SIREN SYSTEM & Programming, CONSUMABLE ITEM i.e.- Civil structure e.g. motor base, SITC of Rain Shroud, Deflector Grill, Canopy & side net guard for rain & rodent protection as required.