Delhi Jal Board-DJB has published Tender For Retrofitting Of Mei Make Circuit Breakers 11 Kv With Allied Works At Sec 11 Rohini Bps. Submission Date for this Tender is 04-03-2024. Circuit Breakers Tenders in Delhi Delhi. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Making of all safety arrangements i.e. safety belt, gum boots, helmet, gloves etc to carry out the work. |
| 2 | Work of disconnection of 11 KVH.T Supply by racking out Circuit Breaker from incoming source , shorting by earth chainand ensuring proper shut down during the work using required equipment. |
| 3 | Complete dismantling of H.T Panel Circuit Breaker including, bushing, moving contact and operating mechanism, tripping coil, closing coil etc. The work includes rack out the trolley from the panel. |
| 4 | Servicing of Circuit Breaker including cleaning of male & female contacts with CRC , Cleaning ofincoming and outgoing contacts , checking the insulation by megger , Hi Pot, checking IR of each phase with body of the breaker , repairing, cleaning, lubrication and adjustments, servicing of operating mechanism for smooth operation of Vacuum Circuit Breaker, assembling ofBreaker after rectification of wiring as required. |
| 5 | Supply of 11 KV 3 Pole Vacuum Circuit Breaker of capacity 630 Amp , Fault level 15 KA, 50 Hz motorisedhaving Tripping and closingcoil of 24/30VDC, with Mechanical spring charge free indicator , Mechanical close tip, Mechanical breaker ON and OFF , Blue Lamp for Spring charge indicationwith Spring charging Handle. Make: MEI |
| 6 | Work of retrofitting of 11 KV VCB in existing panel by modification in the bus bar of the panel , providing & fixing HT Sleeve , High tensile Nut bolt etc. , fixing of CT & PT in the panel. |
| 7 | Work of cleaning /replacement of Insulators burnt bushing & fixed and moving contact. |
| 8 | Testing & Calibration of 30 V DC relay for tripping system. The job includes disconnection of relay from the panel and calibration after servicing and testing with the secondary injection test. The job also includes the replacement of defective wiring of power pack as required at site. |
| 9 | Providing & fixing of indicating lamp unit complete. |
| 10 | Make: Selmount/JVS/Vaishno/SECO |
| 11 | Providing/fixing of power pack of rating 110 Volt AC/24-30 Volt DC for providing the supply to the tripping system. Make:Bharani Electronics/SECO |
| 12 | Providing & installation of Digital type seven segment LED display Volt Meter. Make: EIC |
| 13 | Providing & installation of Digital type seven segment LED display Ampere Meter. Make: EIC |
| 14 | Removal of old and non-working feeder protection relays from the panel and opening of the connection from the CT and relay. |
| 15 | Supply and fixing of the feeder protection relay for 11 KV HT Panel.Make: Ashida/ JVS Work of configuration of the relay as per load parameters at site with all tools etc. |
| 16 | On load and Off Load Testing of the panel after assembling the complete panel , the work includes proper checking the working of protection relays at DC source in case of power failure , checking of trip switch , function checking of selector switch etc. |
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