WBPWD/SEWEC /BED /NIQ-82 /2024-25-3rd Call

Amount

Supply, Installation, Testing & Commissioning of 15 KVA, 3 Ph, 4 wire, 415 Volt, 50 Hz AC Input and 3 Ph, 4 wire, 415 Volt, 50 Hz / (As per actual site requirement & choice of EIC) Modules comprising of IGBT Microprocessor based DSP controlled PWM technology double conversion true on line UPS System having Isolation Transformer at imput , Input voltage range is 415 volt,+10%-15% AC, Input THD<3% on liner load & THD<5% on non liner load, crest factor 3:1(max), Output voltage 415 V AC,0.8 pf, Efficiency 85%~92%, pure sine wave.The static bypass switch shall automatically transfer the critical load to bypass input supply without interruption after the logic senses one of the following conditions ups overload beyond rating, Battery runtime expired and bypass available for Inverter failure. Fatal error in control system. The static bypass switch shall be equipped with a manual means of transferring the load to bypass and back to inverter. Also UPS should have separate manual bypas switch. DC voltage 216 Volt the UPS sould be connected with battery bank consisting of required no of 12V, total 12480 VAH SMF VRLS battery which can provide minimum back up of 60 minutes on full load with open M.S Rack installation of battery & making necessary connection with suitable size of necy length copper wire, cable etc. & 63 Amp plug top. (Make: AVO / VERTIV / APC & Battery Make- Exide power safe / Amara Raja) Terms & Conditions:-36 months onsite warranty on complete installation inclusive of spare parts, battery etc. from the date of installation.

UPS Technology & Capabilites

i) True online configuration with double conversion

ii) Fully digital control with three Digital Signal Processor including rectifier, Invertor, Charger. Protections Advanced electronic protection for device safety backed with MCBs, Fast acting fuses, High speed pulse blanking.

iii) Input power factor to load>0.99

iv) Main back feed protection

v) Lightning Protection Device

Overload Capacity

110% for 10 minutes, 125% for 1 minutes, 150% for 5 Second. 103% for continious.

UPS Display Panel

The Display panel should capable for display of following measurement/ as per standard availability of specified manufacturer.

i) Input - Voltage/ Frequency/ Current.

ii) By- pass - Voltage/ Frequency.

iii) Output - Voltage/ Frequency/ Current.

iv) Battery - Voltage/ Current/ history data/ residual capacity/ charging status.

v) Load - KVA/ KW/ Percentage

vi) Others standard measurement as per manufacturer standard & IS specification.

B) The display panel should also capable to display following indication

i) DC bus boltage - High/ Low

ii) Inverter - Overload / Short Circuit/ Low

iii) Over Temperature -Battery / By-pass/ Inverter

iv) Fault - Rectifier/ By-pass / Inverter/ Paralleling

v) Fuse failure- Input / Output

vi) Battery - Low/ Overcharged

vii) Mains - On / Fail / High / Low / Single Phasing

Switchgear:

MCB / MCCB for Input, Battery, Output & Manual Bypass Switch.

Alarms

The UPS should generates an audioble alarm for following condition.

Mains failour

Battery Low

UPS Over Load (>_ 110 %)

Fault

Shout Down

Battery Bank / Charger/ Rack

i) Minimum charger rating- 10% of battery AH rating offered

ii) Battery recharge time (after complete discharge) to 90% capacity -8-10 Hrs.

iii) Battery Protection - DC MCCB (Internal/ External)

iv) Battery End Cell Voltage - 1.75 V

v) The UPS battery shall be of Advanced Glass Mat Valve Regulated Sealed Lead Acid Battery Construction type (AGM or VRSLAB) in ABS Flame Retardant (UL94V-O) grade (UL 2436) spill containment casing to meet UL 62368-1/IEC 62133 or equivalent standards type.

vi) Automatic float cum boost charging capability with settable float & boost charging voltage & current levels and boots charger time.

UPS Physical Condition

i) Operating Temperature- 40°C

ii) Humidity: 90% RH (Non Conditioning)

iii) Protection Class - IP-20

iv) Type of Cooling - Forced Air

v) Noice Level - <60db at 1 mtr distance

vi) All the electronic cards inside shall be with conformal coating to protect from harsh / Moist environment.

vii) UPS panel should have Dust filter protection with sensor.

viii) Monitoring Software: UPS Monitoring Software on Windows XP Platform

ix) Communication: RS 232, RS 485, SNMP Provided

x) Remote Monitoring features available.

Certification

ISO 9001: 2015, ISO 14001: 2015, ISO 18001, OHSAS 18001 CE Marking:IEC/EN 62040-1-1, IEC/EN 62040-2(EMC Emission),IEC/EN 62040-3(performance & Design)

Static Bypass Switch :-

i) The static shall consist of fully rated Silicon Controlled Rectifiers (SCRs)

ii) The static bypass switch shall automatically transfer the critical load to bypass input supply without interruption after the logic senses one of the following conditions Inverter overload beyond rating. Battery runtime expired and bypass available. Inverter failure. Fatal error in control system.

iii) The static bypass switch shall be equipped with a manual means of transferring the load to bypass and back to inverter.

iv) Also UPS should have separate manual bypas switch.

Terms & Condition

i) Any Problem must be set right with 24 hrs after reporting.

ii) Two mobile nos of different responsible person must be specified alongwith offer for reporting of problems in future.

Carrying cost of battery and UPS to Burdwan site along with installation, fitting & fixing of accessories etc.

C. CHOWHDURY & CO. (BID ID -5992665)

S. N. ENTERPRISE (BID ID -5994844)