Public Works Department

Public Works Department has published Tender For Renewal Of Emergency Backup Ups In Various Icu In Periyar Government Hospital, Periyar Nagar, Chennai-82.; 1 Renewal by Supply and fixing of 15kVA (three phase input/ Single phase output) microprocessor controlled double conversion true online ups system with built in isolation transformer and power factor correction with smf batteries for 1 hours backup time and with suitable ms powder coated rack for batteries and interlink cables complete with the following specifications: CONFIGURATION TRUE ON-LINE Double conversion ups system with pulse width modulation(PWM)Technology using IGBT inverter.RECTIFIER :Full wave (shall fully meet the specified input power requirements)NPUT:-176-280V(Line-Neutral), 305V-405V (Line-LineOUTPUT:- 230v± 1% FREQUENCY:- 50 Hz ±0.1 %SYSTEM DC VOLTAGE:- 360V (12V x 30 Nos)INVERSION TECHNOLOGY:-Micro processor controlled, PWM with instantaneous SINE WAVE control using IGBT.CHARGER :- Built in solid state automatic float-cum boost charger with constant current, constant voltage mode of chargingalong with current limiting features. Ripple in DC shall not exceed 2% when battery is disconnected. 2 PROTECTIONS(in built):-i. Output under voltage.ii. output over voltage.iii. output over load.iv. output short circuit.v.HRC Fuses-input/output/ battery.vi. Battery low trip. vii. battery charging current limit.INDICATIONS:-i. Mains ONii. Inverter ONiii. UPS ON Batteryiv. Load ON UPSv. Battery LOWvi. Mains Failurevii. Overload Tripviii. Inverter TripMETERING:-i. Output AC voltageii. Output DC voltageiii. FrequencyTERMINALS:-Input- 4 Pole MCBOutput – 2 Pole MCB 3 Renewal by Supply and fixing of stand for the UPS batteries for 15 kVA UPS 4 Renewal by Supply and fixing of 3KVA (single phase input/ Single phase output) microprocessor controlled double conversion true online ups system with built in isolation transformer and power factor correction with smf batteries for 1 hour backup time and with suitable ms powder coated rack for batteries and interlink cables complete with the following specifications: CONFIGURATION TRUE ON-LINE Double conversion ups system with pulse width modulation(PWM)Technology using IGBT inverter.RECTIFIER :Full wave (shall fully meet the specified input power requirements)INPUT:-230v± 15%OUTPUT:- 230v± 15% FREQUENCY:- 50 Hz ±0.5 HzSYSTEM DC VOLTAGE:- 96V (12V x 8 Nos)INVERSION TECHNOLOGY:-Micro processor controlled, PWM with instantaneous SINE WAVE control using IGBT.CHARGER :- Built in solid state automatic float-cum boost charger with constant current, constant voltage mode of chargingalong with current limiting features. Ripple in DC shall not exceed 2% when battery is disconnected 5 PROTECTIONS(in built):-i. Output under voltage.ii. output over voltage.iii. output over load.iv. output short circuit.v.HRC Fuses-input/output/ battery.vi. Battery low trip. vii. battery charging current limit.INDICATIONS:-i. Mains ONii. Inverter ONiii. UPS ON Batteryiv. Load ON UPSv. Battery LOWvi. Mains Failurevii. Overload Tripviii. Inverter TripMETERING:-i. Output AC voltageii. Output DC voltageiii. FrequencyTERMINALS:-Input- 2 Pole MCBOutput – 2 Pole MCB 6 Renewal by Supply and fixing of stand for the UPS batteries for 3 KVA UPS 7 Renewal by Supply and fixing of 40A 2P changeover MCB with enclosure on wall with earth connection 8 Renewal by Supply and Run of 4 of 10 sq.mm. PVC insulated SC unsheathed FRLS copper conductor of 1100 V grade in suitable PVC rigd pipe on wall and ceiling with continuous earth wire connection of 10 sq.mm copper wire with painting of suitable colour. 9 Renewal by Supply and Run of 2 of 10 sq.mm. PVC insulated SC unsheathed FRLS copper conductor of 1100 V grade in suitable PVC rigid pipe on wall and ceiling with continuous earth wire connection of 10 sq.mm copper wire with painting of suitable colour. . Last date of submission for this tender is 2025-09-12. This is a Ups tender in Chennai, Tamil Nadu