SPECIAL REPAIRS AND REPLACEMENT OF 80 KVA ONLINE UPS AND CONNECTED WORKS AGAINST BER UPS AT RUKMINI HUB, TS DOLPHIN HILLS UNDER GE(U-I), VISAKHAPATNAM.

Amount

Supplying, installation, testing and commissioning of UPS 80 KVA / 72 KW UPS with the following technical specification :- Technology : IGBT on the input and output with Digital Signal Processor controlled and inbuilt isolation transformer. Rated Output : 80 KVA / 72 KW, The UPS system is compatible for 0.7 lagging to 0.9 leading PF loads without deration Input Power factor at full load : ≥ 0.99 Input Power factor at 50% load : ≥ 0.98 Input current THDi at full load ≤ 3.0%

Input current THDi at 50% load ≤ 6.0%

Input ( Rectifier ) IGBT Based

Voltage 380/400/415 V

Voltage tolerance 320-480V at rated load. upto 240-480V at 50% load.

Frequency 50/60 Hz

Frequency tolerance ± 10%

Rectifier/Charger :

Type of rectifier used : IGBT based DSP controlled Rectifier.

Ripple voltage at full load : Typically 0.

Efficiency of rectifier : ≥ 98%

Battery charger features: (i) Charging circuit constant Voltage Constant Current (ii) Battery status monitoring facility Through LCD display at the front panel (iii) Battery protection circuits MCCB provided in enclosure.

Output (Inverter) IGBT Based (Guaranteed Continuous rated output power at rated output Voltage):

Technology of inversion / IGBT based PWM design with DSP controlled.

Voltage: 380/400/415 VAC, 3 phase, 4 wire, Settable.

Output voltage regulation Balanced load - (±) 1%, Unbalanced load - (±) 3% for 4 wire system

Output Frequency 50 Hz, Output Frequency range - (±) 0.5 Hz

Bypass

Transient voltage regulation for 0 to 100% and vice versa (±) 2%

Recovery time < 5 m.sec

Wave form : Sinusoidal

Crest Factor : 3 : 1

Harmonic (a) Total Harmonic Distortion non - linear load - < 3%

(b) Total Harmonic Distortion100% linear load - < 1%

Phase Displace : Balanced load - 120 ± 1 deg. Electrical

100 % Unbalanced load- 120 ± 2 deg. Electrical

Protection : Input Voltage , Output Voltage, Input frequency, Output Frequency, Battery Charging/ Discharging Level., Load Level, Input High/ Normal/ Low/ fail, Output overload, output short circuit, Output Fault etc.

Overall Efficiency : Including the transformer loss

(a) At Full load - ≥ 93.0% (b) At 75 % load - ≥ 93.5% (c) At 50% load - ≥ 93.5% (d) At 25% load - ≥ 90.5%

Battery bank: Existing Battery bank of Lead Acid Sealed Maintenance Free Batteries shall be connected with UPS. Minor spares if any to be replaced as per manufacturer instructions shall be done at no extra cost.

Backup: 30 Min on full Load Battery

Bypass / Remote Monitoring : Automatic Static Bypass Switch / SNMP Support

Note :- (i) Warranty: Three years replaceable warranty on UPS is mandatory from date of completion.The unit rate quoted shall include for the same. (ii) The required inter connecting wires/cables shall include in the rate quoted.

Important Note :- The UPS shall consist of following :

(a) Alarm Indication, Main On, Inverter On/Off/ Faulty indication Battery Level Static Bypass On Load Level Over Temperature Audible Alarms, Mains failure, low Battery, Over Load.

(b) UPS must be IGBT based rectifier/inverter/IGBT/Charger.

(c) Automatic Phase sequencer should be at input side.

(d) Battery Cabinets should be matching with site available and as directed.

(e) Quoted model should be CE Certified, and Company should have ISO 14001 & 18001 certificates.

Make: Microtek / TATA-Liebert / Luminous / Kirloskar / Aplab / Consul Neowatt

Dismantling of Two nos UPS of any capacity from Rukmini Hub, Dolphin hill after disconnecting all electrical connections from UPS and batteries and shifting the UPS system to AGE E/M No.I store yard complete all as directed. Note: (i) Required T&P , Manpower , Technical assistance to dismantle and Transport UPS to storeyard shal be included in quoted rate. (ii) Necessary RV shall be submitted during payment.

Earthing complete with galvanised steel earth plate electrode 60 cm × 60 cm × 6.3 mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level, connected to galvanised iron strip 32X6 mm as earth lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 of SSR Part-I connected to earthing test point all as specified or indicated including testing on completion (Rates inclusive of necessary earth work in any type of soil, PCC pit, CI cover , funnel in watering pipe, 40 mm dia light grade GI protection pipe for earth strip in ground etc, all as required at site for complete earthing.)

P Govinda Reddy Infrastructure

TECHNO SOFT SOLUTIONS

Pavan Commercial Company