Public Health Engineering Department Tender

Supply and delivery at site of 75 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.(Make : Approve make of P.H.E. Dte.) (a) Input Voltage:- 3 phase, Main supply may or may not be balanced with respect to Phase to Phase-250V-500V Phase to Neutral-144V-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 available. (l) 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. (t) Auto Mode:- Normal * Standby.( Manufacturing test certificate should be Provided at the time of delivery).

Supply and delivery at site the following items:(Approve make of P.H.E Dte.) :- 200 Amp. 415V, 50 Hz 3P neutral link MCCB of breaking capacity 36kA, Thermal release range-200-250 Amp. adjustable Overload Setting: 0.8 - 1.0, Conforms to IS/IEC 60947-2 & IEC 60947-2 with suitable SS enclosure in built neutral link easy wall mounting, IK08 and IP30 protection.

160 Amps 415V,50 Hz, 4p onload front handle Change over switch with SS enlosure as per Conforms to IS/IEC:60947-3. Make- PHED Approved Make