ESWCA-29/2023-24

Amount

Safe Carriage of following store items with loading & unloading at both ends respectively. (under jurisdiction of DVVNL) to praposed site from Sr. No. 1 to 4 .

Transformer

33 KV Post Insulator.

33 KV Lightening Arrestors

Cables

11 K.V. XLPE AL 3x300 Sq. mm.

Supply Providing of follwoing materials (Decentralized materials) by contractor from Sr. No. 1 to 4 with all Associatas accessories like all Type Clamps, Nut& Bolts etc.

Laying of 11 KV Cable Including cost of sand & bricks

(i) 3x300 Sq. mm Indoor

(ii) 3x300 Sq. mm Outdoor

Making of 11KV cable boxes mounted with switchgears and transformers.

Power T/F earthing (water level)

(i) Neutral

(ii) Body

Erection of following Material & Miscellaneous Electrical Works. (As Per RESPO Norms) :-

Earthing of Power T/F, details as given below:-

Water level earthing by Boring and lowering of G.I. pipe size 40 mm dia & thickness 3mm into the ground at 20 Mtr depth or upto the water level with the lower end of solid copper cone Approx 225 mm long and 750 gm in weight shall be provided and screwed in pipe as well as bringing out a continuous copper wire 6 SWG from the cone up to the ground surface where it will be bolted to the G.I. earth Strip for Transformer neutral connection, the G.I.Earth strip size 50x6mm will be welded to the G.I. pipe and neutral earthing support & other installed equipment in switchyard. All required material provided / supply by the contractor own his cost.

Removal of existing 05 MVA Transformer and other accessories equipments.

Disconnecting HT cable connection from 33KV side & 11KV side of 5 MVA Power transformers 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 Power transformer.

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

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 Indoor/outdoor jointing kits 3x300Sq.mm after duly plumbing and taping of cable, providing, fixing and crimping of proper size good quality lugs

Installation of 33 KV Lightning Arrestors:

Assembling and installation/mounting of 3 Nos. lighting arrestors on the L.A.’s structure/terminal gentry, complete with earthing and line connections. The work includes fabrication for proper fixing, if required.

Installation of 33 KV Post Insulators:

Installation of 3 Nos. PI on structure. The work includes fabrication for proper fixing, if required.

Making Proper Connection on 8 MVA Power T/F 33 KV/11 KV Sides. Including welding of earthings etc.

Bobby Electricals