OVERHAULING MAINTENANCE AND OTHER ALLIED WORKS OF HT VCBs AT OLD DOCKYARD AREA SUBSTATIONS AT NAVAL DOCKYARD VISAKHAPATNAM UNDER GE (I) (DM) VISAKHAPATNAM

Amount

Taking down HT Switchgear Vaccum Circuit breaker of capacity 630 to 1250 Amps, 12KV / 11KV, Schneider make HWX model for carrying out following Repairs, Overhauling, Servicing, Preventive Maintenance and refixing the same after carrying out rapairs / overhauling complete all as specified and as directed : (a) Tripping off the breaker, rackout out the breaker complete from the panel along with the trolley for servicing/ inspection/ overhauling. (b) Servicing/ Inspecting /checking Automatic Safety Shutter operation for serviceability and replacement of spares if required. (c) Servicing/ Inspecting / checking of busbar spout and circuit spout connections for RYB Phases and replacement of spares if required. (d) Checking of breaker main mechanism Assembly, fixed contacts and current carrying parts of the breaker, trolley, insulated assembly etc. (e) Setting, reassembling, cleaning, adjustment of fixed contacts, main contact, acring contacts and moving contact for proper setting of auxiliary contacts operating mechanism.

(f) Servicing/ Inspecting / checking of Secondary Socketd / Busbar Earthing Plugs/ Earthing Sockets and replacement of spares if required. (g) Checking, setting and adjustment of rackin and rackout operation of the Breaker Trolley (h) Decarbonising of Busbar and connected items. (j) Lubrication and greasing of all moving parts of the trolley, stopper bolt for proper operating. Note: (i) The rate quoted shall be deemed to be include for necessary T&P, nuts, bolts , washers, gasket, insulation tape,HT sleeve, monoplast compound to put in to the VCBs and Panles in serviceable condition, testing and commissioning. [ii] Replacement of defective parts of the VCB shall be measured and paid separately

Supply and fix including dismantling taking out unserviceable Buffer (For Opening Spring ) For 630 to 1250 Amps Schneider make 11 KV VCB. complete all as specified and as directed. Make :- Schneider only, Part No- MVIJ00098-01

Supply and fix including dismantling taking out unserviceable Buffer (For Closing Spring ) For 630 to 1250 Amps Schneider make 11 KV VCB complete all as specified and as directed. Make :- Schneider only, Part No- MVIJ00056-01

Supply and fix single (Read-Blue) phase busbar spout suitable for 630 to 1250 Amps VCB complete all as specified and as directed. Make :- Schneider only Model No MEP-39-32185

Supply and fix single (Y) phase busbar spout for 630 to 1250 Amps VCB complete all as specified and as directed. Make :- Schneider only Model No MEP-39-32186

Supply and fix CT Spout suitable for VCB 630 to 1250 Amps complete all as specified and as directed. Make :- Schneider only Model No MEP-39-32187

Supply & fixing closing coil assembly 110 V DC to Schneider make 11KV VCB incl necessary connection testing complete incl dismantling taking down unsv one complete all as specified and as directed.. Make :- Schneider, Part No- ECO39SN134900FN

Supply and fixing tripping coil 110 V DC to Schneider make 11KV VCB incl necessary connection testing complete incl dismantling taking down unsv one complete all as specified and as directed.. Make- :- Schneider, Part No- ECO39SN134100FN

Supply and fix including dismantling taking out unserviceable Service /Test Position Limit Switch 1NO+1NC For 630 to 1250 Amps Schneider make 11 KV VCB complete all as specified and directed. Make :- Schneider only, Part No- ESW-B-AAA00-001

Supply and fix including dismantling taking out unserviceable Breaker Wheel - CAST IRON, For 630 to 1250 Amps Schneider make 11 KV VCB. Make :- Schneider only, Part No-MVIA00025-01 c

Supply and fix including dismantling taking out unserviceable spring charging Universal motor with gear box 220V AC For 630 to 1250 Amps Schneider make 11 KV VCB complete all as specified and directed. Make-Schneider only, Part No-MVIJOO157-02

Supply and fix incl dismantling taking out unserviceable vacuum interrupter of suitable for VCB of capacity 630 to 1250 Amps all as specified and directed. Make :- Schneider VSLVG3002-01 or DRCVG2002-01 as per existing

Supply and fix including dismantling taking out unserviceable busbar supporting insulator For 630 to 1250 Amps Schneider make 11 KV VCB complete all as specified and directed. Make :- Schneider only , Part No- MEP-39-A0147901

Supply and fix including dismantling taking out unserviceable Rectifier unit (Monoblock) for spring charging motor For 630 to 1250 Amps Schneider make 11 KV VCB complete all as specified and directed. Make :- Schneider only, Part No- ERC-A-A00DC-001

Supply and fix Drive Beam suitable for 11 KV VCB 630 to 1250 Amps complete all as specified and as directed. Make :- Schneider only Model No MSM3950118600FN

Supply and fix including dismantling taking out unserviceable Isolating Contact For 630 to 1250 Amps Schneider make 11 KV VCB complete all as specified and directed. Make-Schneider only, Part No- MVIK00190-01

Supply and fix Epoxy Body suitable for 11 KV VCB For 630 to 1250 Amps complete all as specified and as directed. Make :- Schneider only Model No. MEP3953022000FN-22

Supply and fix Shutter assembly for busbar / circuit spout suitable for 11 KV VCB For 630 to 1250 Amps complete all as specified and as directed. Make :- Schneider only Model No SPP0009-04

Supply and fix space heater, 230V, 100 watt inside cable chamber including necessary connection, testing complete all as specified and as directed. Make :- Schneider, Part No-EHT-A-AA 000-001

Supply and fix including dismantling taking out unserviceable thermostat for space heater For 630 to 1250 Amps Schneider make 11 KV VCB complete all as specified and as directed. Make :- Schneider only, Part No- ETH-E-B000-001

Supply and fix including dismantling taking out unserviceable resin cast CT dual core of ratio 100-50/5A-5A/15VA core 1 metering, core 2 protection of breaking capacity 31.5KA with dimension 220x110x230 mm and hole to hole 110 mm for 630 to 1250 Amps Schneider make 11 KV VCB. Make : Kappa/Esun/ Pragati/AE/SCHENIDER/ Plastofab complete all as specified and as directed. Note : Contractor should visit the site for brackets size to mounting the CTs in 11 KV VCBs.

All as per item No 21.00 above but 400-200/5A-5A/15VA 5P10

All as per item No 21.00 above, but 600-300/5A-5A/15VA 5P10

M&L for THERMOGRAPHIC TESTING of 11KV switch Boards with IMAGE INFRARED CAMERA to detect Hot spots, to avoid electrical failures and increase safety for all current-carrying devices. Visual and Mechanical Inspection to be done when load is applied to the system. Use & follow appropriate caution, safety devices, and personal protective equipment. Provide a report which includes the following: 1. Description of equipment tested. 2. Discrepancies if any.(HOT Spots). 3. Identify load conditions at time of inspection. 4. Provide photographs and/or thermo grams.

M&L for painting of outer surface of multiple section of complete VCB panel 11 KV size upto 2m x 1.8 x 0.8 in one substation using one coat of synthetic zinc paint after preparation of surface, providing protection cover to all metering equipment, panel meters, switchgears, cleaning of all meters and switch gears all as specified and directed.

Decarburizing/Buffering of copper Busbar complete from 11kV HT Bus bar chamber of each VCB panel including connecting Busbar from CT to main Busbar & spout. Servicing of support insulator by clean cloth and hot air blower/ vacuum cleaner, applying Backtol Red solution to the bus bar insulator , checking for any loose contact, refixing of all nuts & bolts by Stainless steel , refixing all covers ,replacement of defective parts, busbar sleeve and ensure proper decarburizing up to proper megger value , checking all the connections all as specified and directed.

Supply and fixing of Complete PT set, including dismantling taking out complete unserviceable drawout type PT trolly set , PT of 100 VA, dual core of ratio 11KV/root3/110V/root3/100VA , Insulation class F, core 1 metering, core 2 protection complete all as specified and as directed Make : Kappa/Esun/ Pragati/AE/SCHENIDER/ Plastofab . Note : Contractor should visit the site for brackets size to mounting the PTs in 11 KV VCBs.

Supply and fix including dismantling taking out unserviceable HRC Fuse-Pt HT Side (VTF-11, 3A) For 800A to 1600A Schneider make 11 KV VCB Panel complete all as specified and directed. Make-Schneider/AudioVision/ANNAND/UNITY/BUSSMANN

M&L for maintenence/servicing of PT unit 11Kv / 110V by disconneting and taking out from panel mounted position, checking & cleaning of fixed and moving contact points, cleaning/ decarbonising of busbar connections, resin cast PTs using hot blower, CTC solution to the epoxy PT body, tightening of all nuts, bolts, washers, and refixing the same PT to original position, testing complete all as specified and directed.

Supply and fix PT Spout suitable for VCB Panel 800 to 2500 Amps , along with connected busbars/cables complete all as specified and as directed. Make : Kappa/Esun/ Pragati/AE/SCHENIDER/ Plastofab

MVV Prasad

SD TECH

MSN ENGINEERING WORKS

M/s SS Engineering Enterprises