Public Health Engineering Department Tender

Charges for dismentaling the foundation of existing damaged voltage stabiliser after disconnection of power supply as per direction of EIC

Supply and delivery at site of 20 KVA 3 phase, Oil cooled type servo motor operated copper wound line voltage corrector conforming to IS-9815 (Pt-)- 1994 suitable for unbalanced input voltage with following specification including first filling of oil as per IS-335 where applicable. [Make: Approved make of P.H.E. Dte.]

a) Input voltage:- 3 phase main supply may or may not be balanced with respect phase to phase 200V-500V phase to neutral 115V-289V b) Output voltage: 3 phase balanced output voltage. Phase to Phase 400V 0r 415V ± 1% Phase to Neutral 230V or 240V ± 1% [provision should be made to adjust the variation of output voltage per phase by a variable pot well within ± 5% of output] c) Line Regulation: Output voltage should remain well within ± 1% of set voltage [from min to max i.e. either 400V or 415V supply variation] d) Load Regulation: Output voltage should remain neutral well ± 1% of set voltage be (from no load to full load] i.e. either 400V or 415V supply variation) e) Correction speed: Better than 35 Volts second f) Efficiency: Better than 95% on full load g) Cut off limit for [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.