Public Works Department-PWD has published Maintenance Of Electronic Installation And Fans , Improvement / Development Repair Maintenance Of Pump Sets, Street / Compound Light At Delhi Archive Building , Qutab Institutional Area, New Delhi ( Sh Replacement Of Variable Frequency Driv. Submission Date for this Tender is 30-04-2022. Electrical Maintenance Tenders in delhi Delhi. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Supplying & replacement of unserviceable VFD suitable for 11.8 kW motor which shall be capable of operating on the AC Supply Voltages applicable to the end site, with suitable tolerance for variations in the incoming mains power supply. The applicable supply voltage range must meet one of the below :-380 – 480 V AC ± 10%. VFD?s must be capable of continuous operation with the connected load with up to 3% voltage imbalance between the incoming phases. VFD?s shall be capable of operating with a mains supply frequency range of 50 – 60Hz ± 2%. The VFD shall be capable of variable frequency, variable voltage output in the range 0 – 50Hz and 0 – 415 Supply Voltage. VFD?s must be available with a minimum IP55 rating and should include protection features to ensure that the motor may not operate in an overloaded condition which may cause damage to the connected motor. It shall be capable of controlling the motor with a constant or variable torque output characteristic in order to operate the desired load. Selection between constant and variable torque operation should be easily selectable by parameters within the VFD i/c credit of old dismantle material as and where basis etc complete as reqd. (Make: ABB, Model: ABB-ACS560, 23A /Allen/ Bradley / Schneider / Danfoss). |
| 2 | Supplying & replacement of unserviceable VFD suitable for 7.5 kW motor which shall be capable of operating on the AC Supply Voltages applicable to the end site, with suitable tolerance for variations in the incoming mains power supply. The applicable supply voltage range must meet one of the below :-380 – 480 V AC ± 10%. VFD?s must be capable of continuous operation with the connected load with up to 3% voltage imbalance between the incoming phases. VFD?s shall be capable of operating with a mains supply frequency range of 50 – 60Hz ± 2%. The VFD shall be capable of variable frequency, variable voltage output in the range 0 – 50Hz and 0 – 415 Supply Voltage. VFD?s must be available with a minimum IP55 rating and should include protection features to ensure that the motor may not operate in an overloaded condition which may cause damage to the connected motor. It shall be capable of controlling the motor with a constant or variable torque output characteristic in order to operate the desired load. Selection between constant and variable torque operation should be easily selectable by parameters within the VFD c i/c credit of old dismantle material as and where basis etc complete as reqd. (Make: ABB, Model: ABB-ACS560, 15A /Allen/ Bradley / Schneider / Danfoss). |
| 3 | Supplying, fixing & replacement of following sizes valves, strainers, gauges in the chilled water plumbing duly insulated to the same specifications as the connected piping adequetly supported as per specificationi/c credit of old dismantle material as and where basis etc complete as reqd. |
| 4 | Butterfly valve (Manual) with CI body SS Disc. Nitrile Rubber Seal & O-Ring PN 16 pressure Rating for Chilled Water/hot water circulation as specified complete as required at site. (Make: Advance / Audco / Sant / Kirloskar). |
| 5 | 80mm |
| 6 | 125mm |
| 7 | 150mm |
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