ESWCA-03/2025-26

Amount

Safe Carriage of following store items with loading & unloading at both ends respectively. (under jurisdiction of DVVNL).

33 KV VCB 800A, 750 MVA

33 KV CT, 200/100/1-1-1A

11 KV 3 Core XLPE Cable Al. 3x300 Sq.mm

11 KV Cable Jointing kit. Heat 3x300 Sq. mm Indoor

11 KV Cable Jointing kit. Heat 3x300 Sq. mm Outdoor

Supply Providing of follwoing materials (Decentralized materials) by contractor with all Associatas accessories like all Type Clamps, Nut& Bolts etc.

M.S. Nut & Bolt with washer

Control Cable 4x2.5 Sq. mm.Cu. Xlpe (Armoured)

Control Cable 2x2.5 Sq. mm.Cu. Xlpe (Armoured)

24 Volt Bettery & Bettery Charger

Installation of 5/8/10 MVA Transformer and other accessories equipments.

CONSTRUCTION OF CONTROL CABLE TRENCH WITH TRENCH COVER IN SWITCHYARD, AS PER Specifation (All required matrials provided/Supply by the contractor own his cost):-

Fabrication and erection of neutral earthing L Type support made of G.I. Channel size 100x50mm. Structure shall be 4 Mtr. Long with 1 Mtr. Arms. Structure shall be grouted in ratio 1:3:6 in block size 300x300x700mm and painted of welding joint with one coat of Ready Mixed primer and Two coat of enamel Aluminium paint work includes connecting neutral bushing rod of power Transformer and G.I. Earthing strip with the help of flexible copper bond, G.I. Bolt and washer.

Fabrication and erection of cable support made of two pieces of G.I. Angle (65x65x6)mm, 2.75 meter long, joined to each other by means of 5 Nos. G.I. Flat (50x6) mm pieces of size 750 mm long each by welding at equal intervals and grouting in a block of size (300x300x700)mm in C.C. 1:3:6 (cement, coarse sand and stone ballast) complete and painted of welding joint with one coat of Ready Mixed primer and Two coat of enamel Aluminium paint. Work includes providing of three Nos. G.I. clamps made of (50x6)mm G.I. Flat for holding the cable including nuts and bolts.

Refixing of properly Control Cable connections for OTI, WTI, PRV,33 KV Breaker, 33KV CT, 33KV PT, Single/Double Control & Relay pannel Buck holz relay.

H.T. Power Cable Laying (11 KV 3X300sqmm):

Laying 11 KV, (3x300) mm2 XLPE, Cable from power transformer to 11 KV incoming switch gear in the cable trench 0.45 m wide, 0.90m depth. Providing 150 mm local sand for cushion beneath and 150 mm above the cable (quality of local sand required 0.375 cum/m in length). The cable shall be dully protected by brick. On both side of cable by laying brick vertically and bricks would also be laid bricks along the single cable (minimum 18 Nos. of bricks are to be laid top and outer side along the single cable. The work includes digging of trenches, laying of cable in under ground trenches, joining of terminal’s, back filling of earth and testing and commissioning of power cable etc. Spare cable shall be left over and laid in the trenches in shape of 6 m ring at both ends.

Preparation of 11 KV Power Cable Jointing Kits:

Making of 11 KV XLPE Heat shrinkable outdoor jointing kits 3x185Sq.mm/3x300Sq.mm/3x70Sq.mm after duly plumbing and taping of cable, providing, fixing and crimping of proper size good quality lugs

Installation of 24V Battery and Battery Charger:

Assembling and installation of the cabinet of 24V battery and battery charger in switch gear control room including grouting of foundation bolts as per drawing of manufacture, including providing the foundation nuts and bolts of proper size. The electrical connection between battery and battery charge with flexible copper lead of size 7/20 SWG shall be done properly. The work includes installation, wiring upto control panel, testing and commissioning complete in all respect.

Laying of Control Cables (2x2.5)mm2/ (4x2.5)mm :

Laying of different size of (2x2.5)mm2/ (4x2.5)mm2 control cables i.e. from Buchholz realy to Marshalling box Marshalling box to indication protection board in switch gear room, 33 KV CT’s to CT’s Junction Box, 33 KV CT, 33 KV PT, V.C.B. Control Panel Junction Box to 33 KV VCB control panel and control panel to 33 KV VCB outdoor operating mechanism panel from T/F etc. in the cable trench including making proper connection at Buchholz Relay, Marshalling box and indication board as per required for installed equipment.

Painting of Structures :

Painting of the all structures with one coat of ready mixed primer and two coats of ISI Mark Aluminium paint after rubbing with sand paper to the surface of the structure including labour and T&P complete in all respect.

Installation of 33 KV VCB :

Assembling and installation of 33 KV VCB on the VCB out door structure on the plinth. Adjustment of operating mechanism in proper alignment for smooth operation of the same. The work also includes complete with earthing and line connections & fabrication of addition arrangement for proper fixing, if required.

Installation of 33 KV C.T.’s:

Installation of 3 Nos. C.T.’s on the C.T’s structure. The work includes complete with earthing and line connections & fabrication for proper fixing, if required to complete the work.

33 KV CT’s Junction Box:

Providing & fixing of junction box of size (400x400x150) mm made of G.I. sheet of 16 SWG in between 33 KV CT’s & control panel. The work also include making proper connection on the junction box and making all connection in between CT’s and control panel complete as per manufacture’s panel drawing including testing and commissioning of work etc. complete the work.

Removal of existing 05 MVA/8 MVA Transformer and other accessories equipments.

Disconnecting HT cable connection from 33KV side & 11KV side of 5 MVA Power transformers & Removing of Protection Connections for removing power transformer from plinth after proper shutdown. Dismantling of 11KV cable support structure, copper bus bar structure, M.S.Frame etc.

Disconnecting copper flexible/Earthing strip from Power transformer neutral & Dismantling neutral earthing system to facilitate removal of Power transformer from plinth.

Disconnecting Earthing strip from body of 5 MVA/8 MVA Power transformer.

Safe Shifting of 5 MVA/8 MVA Power transformer from existing plinth to safe place in the 33/11 KV substation switchyard.

Dismentling of fencing/wall & refixing of fencing of wall

Reparing of Power T/F Plinth including

12mm.thick Cement Plaster in ratio 1:4, Cement coarse & Sand on all side of plinth.

Neat cement coating thick on top surface of plinth.

R.C.C. work in ratio 1:2:4 (cement, coarse sand & stone grit) on Power T/F Plinth including 3 inch thiknes of R.C.C.

Cleaning & Removing of oily & Damaged sarface of plinth approx

shiva engineering AND suppliers (BID ID -5550821)

VINAYAK ELECTRICALS (BID ID -5550432)