SPECIAL REPAIRS TO REPLACEMENT OF BER BATTERIES OF SOLAR POWERED BACKUP SYSTEM AT CRL (P-199) ,NAVAL BASE KOCHI.

Dismantling the entire unit of 5 KVA UPS along with complete accessories such as print board, Batteries, battery racks etc. and transporting to MES store yard for keeping in safe custody complete all as specified and directed.

Supply, Installation, testing and commissioning of 6 Kw UPS,single phase in and out indoor (IP 20) with surge protection system even in ESS mode input pf 0.99,input with DC flexibility from 16-20 batteries with necessary battery circuit breaker,double conversion technology with input 230V,50 Hz single phase output 230V,50 Hz single phase,it shall be 100% generator compatible,and ABM cyclic charging will increase the battery life 50% more,ESS mode efficiency 99% and including all accessories etc as required. The acoustic noise at 1m of the system should be < 65db. The system shall comply to EN/IEC 62040-1,2,and relevant IS standard. The system shall be true online double-conversion DSP based UPS system and UPS shall be with automatic & manual bypass,switch. The system shall have IGBT rectifier and inverter. Rack DC cable,link and terminal top etc. UPS should be compatible for solar connection,cyber security network card etc complete all as specified and directed.

Supply fixing testing and commissioning of SMF FR battery 12 V 100ah x 16 Nos for 30 min backup at rated load and 36 months warranty complete all as specified and directed.

Material and labour for earthing complete with galavanised steel earth plate electrode 60cm x 60 cm x 6mm thick buried directly in ground (earth pit not less than 2.25mtr below ground level) with top edge of eath plate not less than 1.5mtr below ground level, connected to galvanised iron strip 32 x 6mm as earthing lead by means of bolts, nuts, washers of GI or steel, including PCC (concrete chamber) shall be PCC 1:3:6 type C 1 using 20mm raded stone aggregate, with fair finish internal surface of concrete chamber shall be given 15mm thick plaster in CM 1:4, funnel with wire gauge of (0.68mm) 8 mesh per liner inch, 80mm thick RCC pit cover 320mm x 320mm of RCC 1:2:4 type B-1 using 20mm graded stone aggregate reinformed with XPM, JALLI and charcoal dust and common salt all as shown in electrical plate No 3 of MES SSR part -I and specified including provision of earth wire protected by 40mm dia medium grade GI pipe and watering pipe shall be 20mm bore medium grade GI pipe, and including all excavation and earth work & connecting the earthing to an earthing test point/ transformer nuetral/body/ LT panel etc. and tesing on completion, complete all as specified and directed.

Material and labour for sub main wiring with two runs of 6 sqmm single core, PVC insulated & unsheathed cable 1100 volts grade FRLS with multi stranded, copper conductor drawn through concealed conduit including PVC rigid conduit medium grade fixed to the surface of walls/ ceiling as per ISS including one run of 6 mm size PVC insulated copper conductor complete all as specified and directed Note: 3 runs of 6sqmm copper cable and one run of pvc conduit shall be measured as one unit