Increasing capacity of 33 KV Substation Goyal Ispat in District Ghaziabad

Carriage of following material from PVVNL Store 33KV Lightening arrester

33KV Post insulator

33KV Fuse set

Erection of Following Material & Miscellaneous Electrical Works. Removal of existing 5MVA Transformer and other accessories equipments. Disconnecting HT cable connection from 33KV side & 11KV side of 05MVA Power transformer 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 05MVA Power transformer.

Draining of transformer oil from conservator, radiators of existing 05 MVA T/F, at 33/11 KV S/S into the dry & clean drums and stacking at the safe place in Substation outside of switchyard. Empty drums shall be provided by contractor

Removal of conservator, radiators and other accessories from existing 05 MVA Power transformer.

Safe Shifting of 05 MVA Power transformer main body and other accessories from the substation switchyard to outside the switchyard at suitable place assigned by concern J.E/S.D.O (Distribution).

Re-assembling of conservator, radiators and other accessories to existing 05 MVA Power transformer.

Re-filling the transformer oil (old & used in existing 5MVA T/F)

Installation for 33/11KV 10MVA T/F Safe Shifting of 10MVA, 33/11 KV, Power transformer from out side of switchyard to near Power transformer plinth in Switchyard.

Erection & Installation of 10MVA Power transformer on Power Transformer plinth by fixing all accessories like radiators, conservator tank, filling the transformer oil to desired level and ensuring that there is no leakage, complete job in all respect. Reconnecting 2 Nos. earthing strip to transformer body.

Providing & laying of G.I.Strip of size 50x6mm for connecting the earthmat with each equipment (Terminal Gantry, Bus Gantry, Bus Isolators, Line Isolator, 33KV C.T., 33KV V.C.B., L.As., Fuse Set, Post Insulators, T/F Body & its neutral and M.S.Frame of Cable Supporting Structure), various steel structures. The work also includes cutting, bendidng, straightening, over-laping and welding the earth strip with earth mat and by using high quality arc welding in already digged trenches.

Painting of Earth Strip of size (50x6) mm with one coat of ready mixed primer with two coats of ISI mark synthetic channel green paint.

Water level earthing by Boring and lowering by providing of G.I.Pipe size 40mm dia of 2mm thickness, into the ground upto water level or minimum 50Mtr, which ever is more, with the lower end of solid copper cone Approx 224mm long and 750gm in weight shall be provided and screwed in pipe as well as bringing out a continuous 6SWG copper wire, from the cone upto the ground surface where it will be bolted to the G.I. Strip for Transformer neutral connection, the G.I.Strip will be connected to star point through providing Copper Bond Strip of size-50x6mm.

Supply & Erection solid copper cone Approx 225 mm long and 750 gm in weight

Fabrication and erection of neutral earthing L Type support made of M.S. 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 M.S. Earthing strip with the help of flexible copper bond, M.S. Bolt and washer.

Fabrication and erection of cable support made of two pieces of M.S.Channel (100x50x6)mm, 2.75 meter long, joined to each other by means of 5 Nos. M.S. 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. M.S. clamps made of (50x6)mm M.S. Flat for holding the cable including nuts and bolts.

Fabrication and grouting of M.S. Frames 3.60 mt. long for support of copper Bus Bar. Bus Bar will be provided in L.V. side of Power transformer. The M.S. frame shall be made of M.S. channel (100x50)mm in ‘T’ shape. Providing 2 Nos. support of M.S. Angle iron (50x50x6)mm, 0.60mt. long below the top channel, drilling of 3 Nos. hole on the top channel for fixing of 11 KV pin insulator and painted of welding joint with one coat of Ready Mixed primer and Two coat of enamel Aluminium paint and grouting the frame in C.C. ratio 1:3:6 (cement, coarse sand and stone ballast) in a block of size (300x300x700) mm. The work also includes the fixing of 3 Nos. 11 KV pin insulator with pin and binding the copper Bus Bar with the pin insulator by Aluminium binding wire in complete.

Supply & Fabrication of copper bus bar of size (2500x50x6)mm in L.V. side of 10MVA 33/11 KV, power transformer, Work includes connection of outside bus bar in L.V. side busing rod of Power Transformer and other side with outdoor 11 KV cable box as well as providing empire tape and H.T. tape etc. for proper insulation work.

Providing & Fixing 150mm dia 2mm thick 3M long G.I.Pipe over 33KV, 3x300Sq.mm XLPE Cable before mounting the 2No. Cable on double pole / Cable support structure. The work includes fixing of Clamp, sealing of top and bottom end of the M.S.Pipe. One end of M.S.Pipe is to be buried under earth about 500mm.

Painting of Structures Painting of the following structure 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. Painting of Substation Structures

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 Fuse Set: Assembling and installation of fuse set on the fuse set structure. 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.

To provide required No. of technicians to work on power T/f, HT/LT panels & 33KV line during testing as assisting technical hands of test team during commissioning & energisation.

Hiring of D/G Set including carriage, loading, unloading & operating charges (With fuel) at 33/11KV Substation under construction in case L.T. Supply is not available near S/s within prescribed accessible limit. 63KVA, Three phase, D/G Set for fabrication of different structure at Substation.

Old material received site to PVVNL store including empty cable steel drum.

Hi-tech power transmission (BID ID -4715018)

NIRWAN ASSOCIATES (BID ID -4711871)