Replacement of old 2X2 LED luminaries installed at Department of Science and Technology and Biotechnology 4th Floor Bikash bhawan Salt Lake Kolkata 700091

Supplying, installation, Testing & Commissioning of LED Recessed/surface Down lighter (Round/ square/ Rectangular) 2'x2' with powder-coated pressure Die-cast Aluminium/CRCA sheet body with high-transmission opal PMMA/ polycarbonate/ prismatic diffuser having uniform light distribution and construction as per IS : 10322. The driver rated output wattage should be 10% to 15% higher than lamp rating and efficiency Driver >80%, Operating voltage AC 140- 270 Volt, frequency 50/60 hz, Operating temp range 00 to 400 C, internal surge protection of 2.5 KV with Short & Open circuit protection, THD < 10% , PF ≥0.9, IP20, CRI >80, life time (LED, Driver & electrical circuitary), of minimum 50000 Burning Hours (Life projection shall be calculated as per TM-21 methodology) and 70% of initial Lumen maintained till life ends , CCT 3000°K / 4000°K / 5700°K / 6000°K / 6500°K, Maximum power consumption should not more than the specified rating and Fixture shall be confirming to relevant BIS standards and trade mark certificate (T.C.). Manufactures Word Mark/ Name Engraved/ Embossing/ Screen printing on housing Complete in all respect and LED Chips of SMD Low to mid-power, as per requirement (LM-80 tested) and necessary inter-connections with 1.5 sq mm FR, PVC insulated copper conductor single core cable and earthing etc. as required with Minimum 5 year OEM comprehensive on-site warranty against manufacturing defects including driver and LED module. All test report except L80 should be from 3rd party NABL accredited Lab as per BIS shall be submitted. Shape size and CCT shall be as approved by Engineer-in-Charge as per requirement. System lumen efficacy shall be as below: System lumen efficacy ≥135 lm/Watt 33 - 36 Watt (Make.- Philips/Havells or equivallent As per choice of EIC)