Public Works Department-PWD has published Tender For Preventive Maintenance And Periodic Servicing Of Ht Breaker 11Kv Transformer And Lt Acb 415V Of Two Nos Substation Calcutta National Medical College Kolkata. Submission Date for this Tender is 02-02-2024. Air Circuit Breaker Tenders in Kolkata West Bengal. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 24-Jan-2024 | Extension of date | Date | 02-02-2024 |
| Sl. No. | Item Description |
| 1 | Hiring of 440V, 50Hz, 500KVA Echo friendly sound proof minimum pollution Diesel Generator Set as per direction of EIC. Including operation with necessary connection with appropriate cable, carrying charges and loading & unloading by skilled personel. |
| 2 | Supply, Delivery and pouring of Diesel for mentioned DG set. |
| 3 | Supply, Delivery and pouring of Mobile oil for smoothDG set run as required. |
| 4 | Carrying charges Diesel, mobile from petrol pump to operator site to continue fuel also power supply. |
| 5 | Providing on hire basis 1.1KV Gr 120sqmm PVC insulated cu wire incl. laying hire basis. |
| 6 | Finishing the end by crimping arrangement of 4x120sqmm. |
| 7 | Servicing, cleaning, testing, and instrument calibration of the following HT, LT Panel VCB & ACB, and Dry-type Transformer, along with busbars, risers, and socket contacts, should be carried out by an approved agency of the Directorate of Electricity, Government of West Bengal. The work should be in accordance with the directions of the EIC as specified below. Test reports, service reports, and instrument calibration reports for the aforementioned equipment, duly authenticated by a competent authority, must be submitted in 4 copies within 3 days of testing. If any anomalies are identified, they should be rectified immediately, and any items required for the correction should be supplied by the agency. |
| 8 | 11 KV, 3 Panel 800A VCB, 1000KVA Dry type Trans former and 415V, 1600A ACB LT Panel (Old Sub station) |
| 9 | Servicing, Cleaning, Tightening Checking, Testing and calibration for 3 panel HT Switchgears ( Old Substation) a) IR value measurement by 5 KV megger. b) Contact resistance measurement by Milli volt drop method by injecting 100A DC. c) Primary injection of CT, artificial fault simulation by primary injection (over current and earth fault for all I/C & O/G panel). d) Tripping test confirmation by all relays at appropriate current & time setting with checking of relay wiring & its tightness e) Checking & rectification of indication circuit with power pack and spring charging mechanism. f) Checking & rectification of operation of all VCB both electrical and mechanical. g) Tripping test confirmation of WTI and All Types of Relay Calibration to confirm if the operation of the relay is within the trip time and pick up current tolerances h) Cleaning, servicing and tightness checking of HT Bus-Bar and allied items by air suction blower, CRC / WD 40 and soft cloth. i) Cleaning, servicing and testing of CT & PT with Polarity Test. j) All setting should be as per CT ratio and load pattern and harmonized with CESC HT Switchgear setting. k) All the testing should be comply with the respective IS for preventive maintanance of 11KV Sub-Station. |
| 10 | Servicing, Cleaning, Tightening Checking & Testing with Megger of 1000KVA, 11KV/433V, Dry Type Indoor Distribution Transformer with both the Primary & Secondary Cable end Terminals including Checking & Cleaning Temp. Scanner for Transformer Protection including Cleaning, Checking & Testing of connected incoming& outgoingcables end terminal joints. |
| 11 | Charges of following testing the Transformer |
| 12 | i) Continuity test |
| 13 | ii) Voltage ratio test |
| 14 | iii) Insulation resistance test |
| 15 | Servicing, Cleaning, Tightening Checking & Testing with Megger of 415 Volts 1600A Cubical Type Floor mounting LT Distribution Panel Board with all the incoming & outgoing ACB & switches with cable terminations & also Bus Coupling arrangements. |
| 16 | 11 KV, 4 Panel 800A VCB, 1000KVA Dry type Trans former and 415V, 1600A ACB LT Panel (New Sub station) |
| 17 | Servicing, Cleaning, Tightening Checking & Testing with Megger of 1000KVA, 11KV/433V, Dry Type Indoor Distribution Transformer with both the Primary & Secondary Cable end Terminals including Checking & Cleaning Temp. Scanner for Transformer Protection including Cleaning, Checking & Testing of connected incoming& outgoingcables end terminal joints. |
| 18 | Charges of following testing the Transformer |
| 19 | i) Continuity test |
| 20 | ii) Voltage ratio test |
| 21 | iii) Insulation resistance test |
| 22 | Servicing, Cleaning, Tightening Checking & Testing with Megger of 415 Volts 1600A Cubical Type Floor mounting LT Distribution Panel Board with all the incoming & outgoing ACB & switches with cable terminations & also Bus Coupling arrangements. |
| 23 | 11 KV, 3 Panel 800A VCB, 750KVA Dry type Trans former and 415V, 1250A ACB LT Panel (College Bldg Sub station) |
| 24 | Servicing, Cleaning, Tightening Checking, Testing and calibration for 3 panel HT Switchgears ( Old Substation) a) IR value measurement by 5 KV megger. b) Contact resistance measurement by Milli volt drop method by injecting 100A DC. c) Primary injection of CT, artificial fault simulation by primary injection (over current and earth fault for all I/C & O/G panel). d) Tripping test confirmation by all relays at appropriate current & time setting with checking of relay wiring & its tightness e) Checking & rectification of indication circuit with power pack and spring charging mechanism. f) Checking & rectification of operation of all VCB both electrical and mechanical. g) Tripping test confirmation of WTI and All Types of Relay Calibration to confirm if the operation of the relay is within the trip time and pick up current tolerances h) Cleaning, servicing and tightness checking of HT Bus-Bar and allied items by air suction blower, CRC / WD 40 and soft cloth. i) Cleaning, servicing and testing of CT & PT with Polarity Test. j) All setting should be as per CT ratio and load pattern and harmonized with CESC HT Switchgear setting. k) All the testing should be comply with the respective IS for preventive maintanance of 11KV Sub-Station. |
| 25 | Servicing, Cleaning, Tightening Checking & Testing with Megger of 750KVA, 11KV/433V, Dry Type Indoor Distribution Transformer with both the Primary & Secondary Cable end Terminals including Checking & Cleaning Temp. Scanner for Transformer Protection including Cleaning, Checking & Testing of connected incoming& outgoingcables end terminal joints. |
| 26 | Charges of following testing the Transformer |
| 27 | i) Continuity test |
| 28 | ii) Voltage ratio test |
| 29 | iii) Insulation resistance test |
| 30 | Servicing, Cleaning, Tightening Checking & Testing with Megger of 415 Volts 1600A Cubical Type Floor mounting LT Distribution Panel Board with all the incoming & outgoing ACB & switches with cable terminations & also Bus Coupling arrangements. |
| 31 | Supply of Metal Body Analogue Insulation Tester (Hand Driven Generator Type), 5000V, 10000 Mega Ohm with Carrying Case for Metal Body, Testing Lead (2mts. Length) -1 pair, High Voltage Lead (2 mts. Length)-1 pair [Make -WACO, Model-WI 5002] |
| 32 | Supply of Heavy Duty Safety Hand gloves set reusable type.(Shock proof upto 33Kv) as per choice of EIC. |
| 33 | S & Laying of 1.1KV grade 4 core 240 sq.mm. XLPE/Ar.AL. cable (Make -HAVELLS /NICCO / Crystal/glostar) on the cable tray mostly outside the building and partly inside room as per G.S. |
| 34 | Rate should be quoted incl. of all taxes and cess. |
| 35 | Defect Liability period : 1 year |
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