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Tender For corrigendum : providing and installation of electrical accessories and allieds works at shaspur pwss, block-rampurhat-ii under bolpur mechanical division - supply, delivery at site and storage of wall mounted made of sheet steel fabricated 2 mm for load bearing & 1.6mm for non load bearing, indoor type, dust & vermin proof, lp-54 degree of protection, powder coated painted with rubber gaskets cover, front lockable hinged door with all switchgear and other items duly wired up and tested as per specification: incomer: (a) 100 amps, tpn mccb with adjustable ol, 36 ka, e/f, auto phase corrector & necessary accessories with suitable spd (i.e., ammeter, voltmeter, cts & switches), outgoing:- (b) 7.5 hp to 12.5 hp, tp star-delta starter with other accessories - 1 nos., (suitable size capacitor bank to improve pf from o.85 to 0.98) (c) yard lighting feeder with necessary accessories & time switch(digital) - 1 no. (d) 3phase actuator valve starter with other accessories -1 nos., (e) 2 hp ,3 ph,415v,clorinator feeder with necessary accessories & level controller-1 no., (f) 32a mccb fdr for iep/misc purpose-1no., (g) 32a mccb for in house light-1no.,(e) plc feeder with necessary accessories-1no.( all spare & components as per vendor list of phed), supply and delivery at site of 15 kva, 3phase, oil cooled type servo motor operated copper wound line voltage corrector conforming to is-9815 (pt.-1)- 1994 suitable for un-balanced input voltage with following specification including first filling oil as per is-335 where applicable.a) input voltage:- 3 phase, main supply may or may not be balanced with respect to phase to phase- 200v-500v phase to neutral-115v-290v.b) output voltage:-3 phase balanced output voltage. phase to phase- 400vor 415v 1%, phase to neutral- 230v-240v 1% (provision should be made to adjust the variation of output voltage per phase by a variable pot oil within 5% of output).c) line regulation:- out put voltage should remain well with 1% of set voltage (from minimum to maximum i.e. either 400v. or 415v. supply variation).d) load regulation : output voltage should remain neutral well within 1% of set voltage be ( from no load to full load ) i.e. either 400v. or 415v.e) correction speed:- better than 35 volt / second.f) efficiency:- better than 95% on full load.g) cut off limit (minimum &maximum ) by limit switch with audio & visual.h) metering indication:- by selector switch provision should be made available to measure input mains supply and output voltage other stabilizer for load current measurement an ammeter with selector switch should be available.i) lamp indication :- for input & output should be provided. ( 3 lamps per side ).j) mcb protection: for input side.k) load protection : hrc fuse on each output phase should be availablel) output over shoot:- beyond 210v to . 255v /phase in case of manual mode & voltage protection :auto mode operation.m) visual indication for under voltage & over voltage of output.n) manual mode:- up & down correction with o / p voltage over shoot protection. beyond 210 v-255 v. per phase.o) nature of cooling:- oil cooled system.p) electric current over load protection .q) circuit for delay output .r) input high voltage cut-off above 500 v.s) mode of operation:- auto/manual with a provision to restore the normal working of the unit standby operation should be available in case of any electronic failure in auto mode., installation of mcc panel along with main switch, changeover, busbar chamber, cut out etc. all electrical equipment within the pump house, drawing of cable properly on suitable size gi cable tray on wall / as per direction of eic as per layout & ie rules and all connection with supply necessary materials, cable etc to complete the work, making arrangement with supply & fixing of materials for taking power within the pump house from wbsedcl end as per direction of eic. [for ph no - i, ii & iii], installation of above
02 Jun, 2025
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