Increasing capacity of Sub-Station KHODSAMA Shamli

1. Supply of following Items :- 1. 33 KV Lightening Arrestor

2. M.S. Round 32 mm dia

3. Supply of G.I. Strip size 50x6mm for earthing of outdoor & indoor equipment

5. Supply for cable support Galvanised Structure i) Galvanised Channel (100x50x6)mm

ii) Galvanised Angle (65x65x6)mm

iii) G.I.Pipe 110mm Dia 2mm thickness 2Mtr long with G.I.Clamp.

Supply of copper bus bar of size (2500x50x6)mm

PVC Control cable 2×2.5 mm² Mtr.

PVC Control cable 4×2.5 mm² Mtr.

Supply for Water level earthing i) G.I. pipe size 40 mm inner dia & thickness 2mm

ii) Solid copper cone Approx 225 mm long and 750 gm in weight

iii) Copper wire 6 SWG

iv) Copper flexible earthing strip of size 50x6mm for neutral

7. Safe carriage of following stock material from any stores centres under PVVNL, depending upon the availability of material at Stores Centres, with loading & unloading at both ends respectively. i) 33/11 KV, 10MVA Transformer

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

9. Dismantling of Existing ( 5 MVA-1 Nos) Transformer Kept at suitable place outside switchyard

i) 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.

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

iii) Disconnecting Earthing strip from body of 05MVA Power transformer.

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

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

vi) 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).

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

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

10. Miscellaneous Electrical works of Increasing Capacity of 33/11 KV Substation KHODSAMA (Shamli) from (2×5) MVA to (5+10) MVA. Installation of 33/11 KV, 10 MVA Transformer : i) Shifting of available 10 MVA 33/11 KV, Transformer to transformer plinth in Switch Yard.

ii) Erection of shifted Transformer at 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.

11. Water level earthing by Boring and lowering of G.I. pipe size 40 mm dia & thickness 2mm 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 earth strip will be welded to the G.I. pipe and neutral earthing support.

12. i) 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. Angle (50x50x6) mm pieces of size 0.75Mtr long each by welding at equal intervals and grouting in a block of size (300x1000x1000)mm in C.C. 1:3:6 complete with one coat of ready mixed primer and two coats of Al. 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 with stone Pad of size (300x300x75mm).

ii) Fixing 110mm dia 2mm thick 2M long G.I.Pipe over 11KV, 3x300Sq.mm XLPE Cable before mounting the 2No. Cable on cable support structure. Work includes fixing of Clamp, sealing of top and bottom end of the G.I.Pipe. One end of G.I.Pipe is to be buried under earth about 500mm.

Fabrication of copper bus bar of size (2500×50×6)mm in L.V. side of 10 MVA 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.

13. Installation of 33 KV Lightening Arrestors ::- Assembling and installation/mounting of 3 Nos. lighting arrestors on the L.A.'s structure/terminal gantry, complete with earthing and line connections. The work includes fabrication for proper fixing, if required.

14. Earthing of outdoor equipment, details as given below:- Cutting of 32mm.dia M.S. Bar-3Mtr.long and making one end in conical shape by forging process and driving it into the earth at each corner of bridge outside control room and proper welding with M.S.Bars.

15. Digging of Pits for making delta by laying 32mm. dia M.S.Round in tringle shape. Electric welding on cross joints by providing “U” Clamp in size 25×6mm. of M.S.Flat, with over lap joint by providing M.S.Round-12mm dia, on both sides of over lap joints of M.S.Round, by electric welding. All joints shall be painted with black bituminious paint.

16. Earthing of 33KV LA, Neutral link structure, Power T/F body (both side) by providing G.I.Strip in size 50×6mm. with 32mm. dia M.S.Round laid in trench with proper electric welding.

Control Cable Laying a) Laying of different size of (2×2.5)mm2 control cables i.e. from Buchholz realy to Marshalling box Marshalling box to switch gear room, 33 KV CT's to CT's CT 33 KV, 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 as per required for installed equipment.

b) Laying of different size of (4×2.5)mm2 control cables i.e. from Buchholz realy to Marshalling box Marshalling box to switch gear room, 33 KV CT's to CT's CT 33 KV, 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 as per required for installed equipment.

SHASHI ENTERPRISES

M/s S.S. Refregeration