Electric work

Part - A - For the construction of 33/11 KV Sub-Station Barnawada with Power T/F

Grass cutting and surface dressing including removal of unwanted/rubbish plants with roots from open ground /yard and other Nigam premises with stacking of grass/plants at desired place near the ground.

Excavation of pit in ordinary rock which does not require blasting/murrad (in Jodhpur discom) to erect various supports and stay sets including stacking of excavated muck from the edge of excavation/pit.

(A) Height of poles/R.S.Joist/M.S. Rail Size of pit

9 Mtr/ 1.2mx0.6mx1.50 m deep

Earth work excavation and foundation of platfrom of transformers and brakers including dressing of sides and ramming of bottoms .Liftup to 1.5 Meter including taking out the excavated soil and depositing and refilling of jhiri, watering and ramming and disposal of surplus excavated soil as directed with in a lead of 50 Meter.

Hard soil mixed with boulders

Providing and laying cement concrete including compaction etc, complete using stone aggregate 40 mm nominal size (hand broken ) in foundation plinth excluding the cost of shuttering using 1 cement:5 sand:10 aggregate mix.

Plaster on new surface on walls in cement ,sand mortar 1:6 including racking of joint etc. complete fine finsh 25 mm thick.

Cement concrete flooring grade 1:2:4 (1-cement :2- coarse sand :4-graded stone aggregate ) rounding off edges etc.but excluding cost of nosing of steps etc. complete.

25 mm thick with 12.5 mm thick nominal size aggregate.

Randon Rubble stone masonry for foundation and plinth in cement sand mortar 1:6(1 Cement : 6 Sand) including labour charges.

25 mm thick with 12.5 mm thick nominal size aggregate.

Safe carriage of PCC poles including loading / un-loading

a) 9 Mtr. Long-400 Kg /11 Mtr. PCC pole

Within 10 Kms.

Safe carriage of steel( fabricated and unfabricated) I.e.M.S. Rails, R.S.Joists, M.S.Channels, M.S.Angles, M.S.Flat, G.I.Stay Sets, G.I. Stay Wire, G.I.Wire Nut & Bolts etc. and ACSR Conductor including loading and unloading and stacking in Nigam store /at work site

Within 10 Kms.

Safe carriage of Insulator, hardware, cable etc.including loading/unloading and stacking in Nigam.stores etc.

Within 10 Kms.

Safe carriage of 11/.4 KV 3 Phase distribution transformer including loading/unloading from store to site (these Charges will be 1.5 times for both sides)

Within 10 Kms.

Safe Carriage of 33/11 KV Power Transformer

Within 10 Kms

Above 10 Kms. & upto 30 Kms Add for each Km.or part thereof.

Safe carriage of breakers/kiosks etc. including loading/ unloading and stacking in Nigam stores

Within 10 KMs.

ARC CH. 4.3(a))

Safe unloading of steel fabricated/ unfabricated conductor drum & other line material.

Above 3.15 MVA

Safe unloading of power/distribution transformers

Fixing of 11kv B&S/T&C type disc insulator of 11kv lines (each unit consiting of 3 Nos. disc & 1 set of H/W ) on terminal point including fixing of hardware and strips.

Fixing of 33kv pin insulator with pins.

Assembly. Installation & commissioning of gang operated isolating switch on erected structure with setting for accurate operation including fixing of allied accessories completein all respect with post insulator and jumpering on both ends for connection with the system. The nuts and bolts will be supplied by the contractor for which payment will be made as per prevailing Discom store issue rates.

(A)G.O. switch . with earthing blade.

33kv G.O.switch

11kv G.O.switch

Assembly and installation of Horn Gap fuse set (set of 3nos)on erected structure as per design, complete in all respectwith post insulator including jumpering on both ends for connection with the system. The nuts & bolts will be supplied by the contractor for which payment will be made as per prevailing Discom store issue rates,

33kv Horn Gap fuse set.

11kv Horn Gap fuse set.

Installation of lightening arrestors on erected structure /support (1 nos) including connection with earth by wire /strip as required and jumpering etc. The nuts & boltswill be supplied by the contractor for which payment will be made as per prevailing Discom store issue rates,

(A)sub-station type

33 KV L.A. each

11 KV L.A. each

Installation testing as per Nigams norm & commissioning of 11/0.4KV distribution transformer on erected supports including fixing of base channels as per requirment jumpering on HV&LV side, crimping of lugs/ clamping earth connections of body and neutral of transformer with wire /strip (as already provided with earthing ) complete in all respect. The PG clamps nuts & bolts will be supplied by the contractor for which payment will be made as per prevailing Discom store issue rates,

25 and 40 KVA

Fixing of PG clamp of Dog /Racoon Conductor

Assembly,installation & commisioning of 11 KV Roaster switchs on erected structures with stting for accurate operation including fixing of allied accessories completed in all respect with post insulators and jumpering on both ends for connection with systm.The nuts & bolts will be supplied by contractor for which payment will be made as per prevailing Dicom store issue rates.

Mesh earthing for 33/11 kv sub-station as per approved map &design usingMS flat 50X6mm/MS road 20mm dia includinglaying of flat/rod at the depth of 0.65 Mtrs.,welding & jointing at joints , structures & equipments etc.as under:

Excavation of trench of 0.65Mtrs.depth and 0.5Mtr.width

Ordinary rock ( where blasting is not required.)

Laying of MS flat /MS rod in 0.65Mtr.deep excavated trench and welding of MS flat/rod continuosly with 100 mm overlaping for straight joint including coating of MS flat joints with molten bitumen and covering joint with bitumen impregnated tape to protect from rust.

Shaping of MS flat for connecting the equipments with earthmesh .The work includes the welding of MS flat with equipments/structure and also with earth mesh.The work also includes coating of MS flat joint with molten bitumen and covering jointwith bitumen impregnated tape to protect from rust.

Preparation of spikes made of M.S Rod of 20 mm dia and 3 Mtr.length as per design and requirment to be driven in earth by mechanical means and Providing & .fastening of suitable clampswith the M.S. Rod, connection of earth wire/stay wire/MS flat inclamp depending on type of soil:

a) 33/11 KV power transformer.

(A) Where drilling is not required

Filling of trench with available excavated muck in layers of 20cm (Max.)consolidating each deposited layer by ramming & watering with lead up to 50 Mtr, and lift up to 1.5 Mtr.

Painting of exposed portion of MS flat/rod with two coats of red-oxide primer and two coats of green enamel paint including material

Earthing of new 33/11 KV S/S with bentonite compound (including material ) involving following activities.

Laying of 1100 volt heavy duty armoured XLPE cable of aluminum coudctor of following size conforming to IS: 7098 (Pt-I) (latest amended) overhead service line from pole to meter terminals for release of new LT connections/replacement of damaged/obsolete service line (except agriculture one). The cable must be fixed on wall with clamps /hooks properly at a interval of one meter.

2 Core 2.5/ 4/ 6 sq. Mm

Erection of PCC poles in excavated pit in alignment after checking the same with plumb line as per approved design & drawing of 33/11kv sub-station.The pit should be back filled with the soil with proper ramming below 30cm ground level and then muffed above 15cm average ground level with cement concrete ratio1:3:6.The charges for muffing will be paid extra as per chapter code no 5.7 The nuts & bolts will be supplied by the contractor for which payment will be made at the prevailing store issue rates.

PCC Poles 9 Mtr. Long

Laying / stringing of bus bar with ACSR Dog & jumper connection using tie rod ,33KV /11KV insulator strings,required hardware,P.G.clamps/T clamps etc.as per requirement including Y-connections at bus bar jumpering point as per the direction of engineer in-charge.

ACSR DOG/RABBIT

Transportation of 33 KV or 11 KV CT/PT/CTPT Set (All sizes)for replacement at 33/11 KV S/S along with their loading & unloading..

Within 10 Kms.

Part - B - For erection of 33 KV line to proposed 33/11 KV S/S Barnawada

Conducting route survey as per approved route map and pegging of route with tee off point section point & double pole locations.

Trimming of tree branches/plants and preparing route approchases for proposed line.

(A) Height of poles/R.S.Joist/M.S. Rail /Size of pit

9 Mtr/ 1.2mx0.6mx1.50 m deep

12.8/12.6 Mtr/ 1.5mx1.5m x2.10 m deep

(C)Stay set/Depth of pit

Safe carriage of PCC poles including loading / un-loading

Within 10 Kms.

Safe carriage of steel( fabricated and unfabricated) I.e.M.S. Rails, R.S.Joists, M.S.Channels, M.S.Angles, M.S.Flat, G.I.Stay Sets, G.I. Stay Wire, G.I.Wire Nut & Bolts etc. and ACSR Conductor including loading and unloading and stacking in Nigam store /at work site

Within 10 Kms.

Safe Carriage of Insulator, hardware, cable etc.including loading/unloading and stacking in Nigam.stores etc.

Within 10 Kms.

Safe carriage of fabricated lattice towers structures and sub-station structures type AB, AB beams, isolators structures etc. including loading/unloading and stacking in the Nigam. Stores / at work site.

Within 10 Kms.

Erection of all type of steel supports in the excavated pit in alignment after checking the same with plumb line including fixing of cross arms and top hamper before erecting the supports. The support should be grouted and muffed in cement concrete of ratio 1:3:6 as per item No. 5.7 the remaining portion of the pit will be back filled with soil. The nuts & bolts will be provided by the contractor as per Nigam's specification for which payment will be made at the prevailing store issue rates. The cost muffing and grouting will be paid extra.

Lattice Structure

Erection of PCC poles in excavated pit with fixing of brackets,cross arms & top hampers as required in alignment after checking the same with plumb line. The support is to be back filled with soil with proper ramming. The nuts & bolts are to be provided by the contractor as per Nigam's specification for which the payment will be made at the prevailing Discom store issue rates.

PCC Poles 9 Mtr. Long (400 Kg)

Erection &assembly of 2 Pole structures of steel supports or PCC poles in excavated pit in alignment after checking the same with plumb line.Including fixing of top bracing of M.S.Channels with pilot plates and clamps.The support is to be back filled with soil with proper ramming.The nuts &bolts are to be provided by the contractor as per Nigams specfication for which the payment will be made at the prevailing Discom store issue rates.

PCC Poles 9 Mtr. Long(400 Kg.)/11Mtr.long

Erection & fixing of G.I.Stay sets with anchor plates in excavated pit in required position and back filling with soil with proper ramming.The work includes fixing of stay clamps.Stay insulator with stay wire at both ends with proper tension.Size of stay set/stay wire

8"x3/4" with 7/8 SWG stay wire

Providing and laying of cement concrete in ratio 1:3:6 using 43 grade cement,river sand and 12 mm to 20 mm graded blast crusher broken in pit/foundation according to the size/type of supports/stay set including compaction/curing for 21days in steel plates shuttering /farmer base.

Fixing and assembly of disc.point channel pair with pilot plates&clamps on erected double pole structure as per design. The nuts &bolts are to be provided by the contractor as per Nigams specification for which payment will be made as per prevailing Discom store issue rates.

33 KV Line

Fixing of 11kv B&S/T&C type disc insulator for 33kv lines (each unit consiting of 3 nos .disc.& 1set of H/W) on terminal point including fixing of hardware and strips.

Fixing of 33kv pin insulator with pins.

Assembly. Installation & commissioning of gang operated isolating switch on erected structure with setting for accurate operation including fixing of allied accessories completein all respect with post insulator and jumpering on both ends for connection with the system. The nuts and bolts will be supplied by the contractor for which payment will be made as per prevailing Discom store issue rates.

33kv G.O.switch

Fixing of PG clamp of Dog /Racoon Conductor

Laying ,jointing , stringing, tensioning and clamping of conductor with proper sag as directed , using bolted type hardware including binding on pin insulators,jumpering on section points with binding wire / P.G.clamps.Aluminium jointing sleeves will be used for jointing the conductor.The line must stand at proper voltage on charging.The contractor will be provide P.G.clamps for which payment will be made as per prevailing Discom issue rate.

(B) IN RURAL AREA

ACSR DOG

On new works with two coats.

Painting with priming coats or ready mixed red-oxide paint 2 coats of approved make on steel works after cleaning with wire brush/ sand paper. (including cost of red oxide)

Painting with aluminium paint of approved brand and manufacturer to give an even surface. (includin

g cost of aluminium paint)

Part - C - For erection of 11 KV Interconnection work under AEN(O&M), JPD, Khandar

Conducting route survey as per approved route map and pegging of route with tee off point section point & double pole locations.

Trimming of tree branches/plants and preparing route approchases for proposed line.

(A) Height of poles/R.S.Joist/M.S. Rail /Size of pit

9 Mtr/ 1.2mx0.6mx1.50 m deep

Lattice Tower

11.4/10.8 Mtr/ 1.5mx1.5m x1.80 m deep

(C)Stay set/Depth of pit

Safe carriage of PCC poles including loading / un-loading

(C) 9 Mtr. Long 200 Kg. PCC pole

Within 10 Kms

Safe carriage of steel( fabricated and unfabricated) I.e.M.S. Rails, R.S.Joists, M.S.Channels, M.S.Angles, M.S.Flat, G.I.Stay Sets, G.I. Stay Wire, G.I.Wire Nut & Bolts etc. and ACSR Conductor including loading and unloading and stacking in Nigam store /at work site

Within 10 Kms.

Safe Carriage of Insulator, hardware, cable etc.including loading/unloading and stacking in Nigam.stores etc.

Within 10 Kms.

Safe carriage of fabricated lattice towers structures and sub-station structures type AB, AB beams, isolators structures etc. including loading/unloading and stacking in the Nigam. Stores / at work site.

Within 10 Kms.

Above 10 Kms. & upto 30 Kms. Add for each Km.or part thereof.

Erection of all type of steel supports in the excavated pit in alignment after checking the same with plumb line including fixing of cross arms and top hamper before erecting the supports. The support should be grouted and muffed in cement concrete of ratio 1:3:6 as per item No. 5.7 the remaining portion of the pit will be back filled with soil. The nuts & bolts will be provided by the contractor as per Nigam's specification for which payment will be made at the prevailing store issue rates. The cost muffing and grouting will be paid extra.

Lattice Structure

Erection of PCC poles in excavated pit with fixing of brackets,cross arms & top hampers as required in alignment after checking the same with plumb line. The support is to be back filled with soil with proper ramming. The nuts & bolts are to be provided by the contractor as per Nigam's specification for which the payment will be made at the prevailing Discom store issue rates.

(B) IN RURAL AREA

PCC Poles 9 Mtr. Long(200Kg.)

Erection &assembly of 2 Pole structures of steel supports or PCC poles in excavated pit in alignment after checking the same with plumb line.Including fixing of top bracing of M.S.Channels with pilot plates and clamps.The support is to be back filled with soil with proper ramming.The nuts &bolts are to be provided by the contractor as per Nigams specfication for which the payment will be made at the prevailing Discom store issue rates.

PCC Poles 9 Mtr. Long(200 Kg.)

Erection & fixing of G.I.Stay sets with anchor plates in excavated pit in required position and back filling with soil with proper ramming.The work includes fixing of stay clamps.Stay insulator with stay wire at both ends with proper tension.Size of stay set/stay wire

6"x5/8" with 7/10 SWG stay wire

Providing and laying of cement concrete in ratio 1:3:6 using 43 grade cement,river sand and 12 mm to 20 mm graded blast crusher broken in pit/foundation according to the size/type of supports/stay set including compaction/curing for 21days in steel plates shuttering /farmer base.

Fixing and assembly of disc.point channel pair with pilot plates&clamps on erected double pole structure as per design. The nuts &bolts are to be provided by the contractor as per Nigams specification for which payment will be made as per prevailing Discom store issue rates.

11 KV line

Fixing of 11kv B&S/T&C type disc insulator of 11kv lines (each unit consiting of 1 nos.disc.& 1set of H/ W ) on terminal point including fixing of hardware and strips.

Fixing of 11 KV pin insulator with pins.

Laying ,jointing , stringing, tensioning and clamping of conductor with proper sag as directed , using bolted type hardware including binding on pin insulators,jumpering on section points with binding wire / P.G.clamps.Aluminium jointing sleeves will be used for jointing the conductor.The line must stand at proper voltage on charging.The contractor will be provide P.G.clamps for which payment will be made as per prevailing Discom issue rate.

(B) IN RURAL AREA

ACSR Rabbit

On new works with two coats.

Painting with priming coats or ready mixed red-oxide paint 2 coats of approved make on steel works after cleaning with wire brush/ sand paper. (including cost of red oxide)

Painting with aluminium paint of approved brand and manufacturer to give an even surface. (includin

g cost of aluminium paint)