PERIODICAL MAINTENANCE AND REPAIR OF HT VCB AND ALLIED WORKS AT NEW DOCKYARD JETTY SUBSTATIONS AT NAVAL DOCKYARD VISAKHAPATNAM UNDER GE (I) (DM) VISAKHAPATNAM

Amount

Supply and fix including dismantling taking out unserviceable resin cast CT dual core of ratio 100/50/5A-5A/15VA/1 clouse 1 metering, core 2 protection of breaking capacity 31.5KA with dimension 220x110x230 mm and hole to hole 110 mm. For 800 to 1250 A schneider make 11 KV VCB. Make : Kappa/Esun/ Pragati 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 1.00 above but 600/300/5A-5A/15VA/1, 5P10

All as per item No 1.00 above but 600/300/5A-5A/15VA/1, 5P20

Supply and fix including dismantling taking out unserviceable Buffer (For Opening Spring ) For 800A to 1600A Schneider make 11 KV VCB. Make-Schneider only, Part No- MVIJ000980-1 complete all as specified and as directed.

Supply and fix including dismantling taking out unserviceable Buffer (For Closing Spring ) For 800A to 1600A Schneider make 11 KV VCB. Make-Schneider only, Part No- MVIJ00056-01 complete all as specified and as directed.

Supply and fix including dismantling taking out unserviceable Control Circuit HRC Fuse : 2 A , 4 A , 6 A , 1 0A, Make- L&T, Type-HG, size-F1 Cat No- ST-30725 to ST-30728 complete all as specified and as directed.

Supply and fix including dismantling taking out unserviceable bakelite HRC Fuse holder : 2 A , 4 A , 6 A ,1 0A. Make- L&T, Type-HD 20H , Fuse type-F1 Cat No- ST-30772 complete all as specified and as directed.

M&L for maintenance of 11KV CT chamber by disconneting all 3 ph cable connections, extended busbars and from VCB Bus and taking out from panel mounted position, testing for proper functioning, body leakage, checking & cleaning / decarbonising of all contact points of CT, epoxy body and Busbars, complete CT chamber using hot blower and CTC solution, applying backtol (Red) solution to the CT body and refixing the same CT to original position, re-connection of all existing cables, extended busbars, testing complete all as specified and as directed.

Supply and fix single (Read-Blue) phase busbar spout suitable for 800 Amps to 1250 Amps VCB make schneider only Model No MEP-39-32185 complete all as specified and as directed.

Supply and fix single (Y) phase busbar suitable spout for 800 Amps to 1250 Amps VCB make schneider only Model No MEP-39-32186 complete all as specified and as directed.

Supply and fix single (Read-Blue) phase busbar spout suitable for 1600 Amps to 2000 Amps VCB make schneider only Model No MEP-39-A0051301 complete all as specified and as directed.

Supply and fix single (Y) phase busbar spout suitable for 1600 Amps to 2000 Amps VCB make schneider only Model No MEP-39-A0051401 complete all as specified and as directed.

Maintenance, servicing, cleaning of Busbur chamber of each VCB including connecting busbar from CT to Busbar, spout, support insulator, opening of covers, using CTC and clean cloth and hot air blower, checking for any loose contact, tigtening of all nuts & bolts, refixing all covers complete all as specified and as directed.

Supply and fixing Schneider Micom P-127 protection relay, 110V, 5A, type-BAOZ112Ca1 to Schneider make 11KV VCB incl necessary connection testing complete incl dismantling taking down unsv one complete all as specified and as directed.

Supply and fixing Schneider High speed trip relay, type-VAJH, 110V to Schneider make 11KV VCB incl necessary connection testing complete incl dismantling taking down unsv one complete all as specified and as directed.

Supply & fixing closing coil assembly 110 V DC to Schneider make 11KV VCB incl necessary connection testing complete incl dismantling taking down unsv onecomplete 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 Breaker Nylon Wheel, For 800A to 2500A Schneider make 11 KV VCB. Make-Schneider only, Part No-MVIA00054-01 complete all as specified and as directed.

Maintenance, servicing, cleaning of vacuum circuit breaker unit of 11 KV VCB panel of capacity 400 Amps to 2500 Amps, taking out from panel, cleaning of all parts with CTC and clean cloth, removal of carbon deposited inside the moving contacts, greasing of all moving parts of the VCB, checking of complete operating mechanism for proper functioning, reporting for any defective parts, complete all as specified and as directed. (Note: Replacement of defective parts of the VCB shall be measured and paid separately)

Supply and fix including dismantling taking out unserviceable spring charging Universal motor with gear box 220V AC For 800A to 2500A Schneider make 11 KV VCB. Make-Schneider only, Part No-MVIJOO157-02

Supply and fix including dismantling taking out unserviceable Release Lever (Nylon ) For 800A to 1600A Schneider make 11 KV VCB. Make-Schneider only , Part No- MVIJ00010-01

Supply and fix including dismantling taking out unserviceable Rectifier unit (Monoblock) for spring charging motor For 800A to 1600A Schneider make 11 KV VCB. Make-Schneider only, Part No- ERC-A-A00DC-001

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 800A to 1600A Schneider make 11 KV VCB. Make-Schneider only, Part No- ETH-E-B000-001 complete all as specified and as directed.

Supply and fix including dismantling taking out unserviceable LED Indicating Lamp & Holder Red-Green-Blue-White-Amber Assembly For 800A to 1600A Schneider make 11 KV VCB. Make-Schneider only complete all as specified and as directed.

S&F multifunctional meter with LED disply, accuracy class-1, e-nevigator, including dismantling taking down unserviceable one and connection, programming, testing complete all as specified and as directed. Make- Elmeasure, Model- EN-8400

Supply and fix CT Spout suitable for VCB 800 to 2500 Amps chamber insulating bus support epoxy insulator of dia 95mm and 125mm length complete all as specified and as directed.

M&L for painting to steel surface of CT Chamber inside wall all side with one coat of synthetic enamel paint after preparation of surface complete all as specified and as directed.

Supply and fix Drive Beam suitable for 11 KV VCB 800 to 2000 Amps make schneider only Model No MSM3950118600FN complete all as specified and as directed.

Supply and fix Epoxy Body suitable for 11 KV VCB up to 1250 Amps make schneider only Model No MEP3953022000FN-22 complete all as specified and as directed.

Supply and fix Dive Rod assembly with contact block VG2 suitable for 11 KV VCB up to 1250 Amps make schneider only Model No SPR395ASS0014FN complete all as specified and as directed.

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.

P NARAYANA RAO

SATYAM ENGINEERS

M/s NATIONAL ENGINEERING CONSTRUCTIONS CO

sree karthika fabs

M/s SS Engineering Enterprises

SRK PROFESSIONAL ENGINEERING