ELECTRIC WORK UNDER TN-166

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.

Levelling of ground

Levelling of ground above 30 cm.to 90 CM.depth. with tractor and T&P required as per condition of ground including removal of rubbish plants from ground & marking of boundary with lime powder.(Including all lead & lifting)

Excavation of pit in Hard soil (15% extra shall be payable for the designated desert area panchayat samities of Jodhpur Discom in pursuance to JdVVNL order No. 1240 dt. 18.07.13).

(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.

The rates are all lead of cement,lime,ballast, sand,surkhi and grit etc.at site of work.

For all concrete work coarse sand shall be used no extra will be paid .

Concrete mix prepared by power driven mechanical mixer shall be used .

Under exceptional coditions, where mechanical mixer and vibrator are not used(with the approval of Engineer Incharge reduced by 3% for mechanical mixer and 2% for Vibrator

Thickness of the cement concrete should not exceeed 100 mm.

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

The rates for complete work including racking of joints,curing,grinding,mixing and finishing T&P and scaffolding material and cost of material with all lead and lift.

The rates cover protection of all place and things,requiring protection and cleaing such places and thing of all droppings and splashes of mortar etc.

Masonry for foundation and plinth

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

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 [email protected]/km

Above 30 Kms & upto 50 Kms . Add for each Km or part [email protected]/km

Above 50 Kms . Add for each Km or part thereof(upto 75 km)@16.27/km

Safe loading of power/ distribution transformer.

(A) 33/11 KV power transformer.

Safe unloading of power/distribution transformers

a) 33/11 KV power transformer.

Above 3.15 MVA

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 of all type of fabricated material on erected supports with nut & bolts as per approved design & drawing of sub-station.

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 11kv B&S/T&C type disc insulator of 11kv lines (each unit consiting of 2 nos.disc.& 1set of H/ W ) on terminal point including fixing of hardware and strips.

Fixing of 33kv pin insulator with pins.

Fixing of 11 KV 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.

(B)G.O. switch . without 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.

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

3 Nos. of earthing of 11/0.4 KV distribution transformer /sub-station with 3 pieces of M.S.Rod 20mm dia each 3 meter long and driving them into earth by mechanical means at a distance as per approved design & drawing & specification.The work includes flattening of top ends of M.S.rod drilling a hole of 9/16" dia.at flattened top and tightening of M.S.flat 50x6mm/25x3mm (having 3 hole 2ends and 1mm middle) with nuts and bolts with M.S.rods top end hole.The flat will also be welded with M.S.rod.The end will be connected to equipments as under in sequence.

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.asunder:

Excavation of trench of 0.65 Mtrs.depth and 0.5 Mtr.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 in clamp depending on type of soil:

Where drilling is required

Pipe Earthing for Power Transformer at 33 / 11 KV S/S:- Supply & erection of earthing electrode shall consist of G.I. Pipe 100 mm,of 3 Mtr Length. The electrode shall be buried as far as practicable 3 meters below ground level. Wherever possible, earth electrodes shall be located as near the water tap, water drain or near down take pipe. Earth electrodes shall not be installed in proximity to a metal fence. It shall be kept clear of the buildings foundations and in no case it shall be nearer than 2 meters from the outer face of the wall. The electrode shall be surrounded with layer of charcoal dust and salt mixture through out the length. The 100 mm GI pipe shall be provided with holes of 12 mm dia. drilled at 75 mm interval upto 2.5 meters length from bottom. The top of the pipe shall be provided with a G.I. threaded cap for watering the earth through a pipe. A Clamp with Pati of 12" of M.S. Flat of size 50X6 mm shall be fixed (Bolted) on the top edge of the pipe which in turn shall be connected to Neutral / Body of the Power Transformer through M.S. Flat size 50X6 mm. The G.I. cap over the GI pipe shall be housed in a masonry chamber, approximately 300 mm x 300 mm x 300 mm deep. The masonry chamber shall be provided with a RCC inspection cover resting over a RCC frame, embedded in masonry.

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.

(B) IN RURAL AREA

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

Laying, testing termination of control cable 1100 volts PVC insulated including supply and installation of ferrules to designate various cores of control cables by terminal Nos. of identification including utilization of cable gland. The control cable should be clearly arranged in trenches avoiding crossings including clamping of control cable at regular interval and providing identify tags.

2x2.5 Sq.mm.

4x2.5 Sq.mm.

12x2.5 Sq.mm.

4x4 Sq.mm.

Installation of metering points on 11 KV Out going feeder at 33/11 KV S/S.

The installation work to be carried out as per drawing/design, under the supervision of concerned Assistant Engineer

Mounting structure

The requisite steel members will be supplied by contractor including the hardware. Contractor shall joint/weld the members to form the mounting structure as per drawing. Necessary tools, welding, machines, lifting devices etc. shall be arranged by contractor.

Fabrication of steel structures of M.S angle, M.S.channel & M.S.Flat including cutting, drilling as per design and drawing.

33/11 KV Rural Sub-Station Structure (4086.879 Kg)

Drilling of holes in MS Channel / Angle /Flat

11/16" dia holes(17.46 mm dia.)

Excavation of pit in Hard soil (15% extra shall be payable for the designated desert area panchayat samities of Jodhpur Discom in pursuance to JdVVNL order No. 1240 dt. 18.07.13).

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

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

(B) Lattice Tower /Size of pit

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

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 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 & 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.

Supplying and laying of randum rubble stone boulder having weight not less than 20 kgs.

Fixing and assembly of disc.point channel pair with pilot plates top hampers & clamps on erected single 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

11 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.

Fixing of 11 KV pin insulator with pins.

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

3 Nos. of earthing of 11/0.4 KV distribution transformer /sub-station with 3 pieces of M.S.Rod 20mm dia each 3 meter long and driving them into earth by mechanical means at a distance as per approved design & drawing & specification.The work includes flattening of top ends of M.S.rod drilling a hole of 9/16" dia.at flattened top and tightening of M.S.flat 50x6mm/25x3mm (having 3 hole 2ends and 1mm middle) with nuts and bolts with M.S.rods top end hole.The flat will also be welded with M.S.rod.The end will be connected to equipments as under in sequence.

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 in clamp depending on type of soil:

Where drilling is required

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.

(B) IN RURAL AREA

PCC Poles 9 Mtr. Long

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)

On new surface

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

On new works with two coats.

Intallation of 33 KV Cable (XLPE) termination / straight through joints ( Heat shrinkable type) as per manufacturer's kit guidance and direction including preparation of cable and testing refilling etc as required.(Including crimping of lugs)

(ii) Outdoor end terminal 3x240 Sq mm to 3x400 Sq mm

(ii) Straight through joint 3x240 Sq mm to 3x400 Sq mm

Laying of 33 KV & 11KV XLPE cable without Road cutting i.e. through burrowing machine "VERMIER".(120 cm deep).Use of this technology must be restricted to the situation like:-

(i) When the passages available for laying the proposed cable is totally a metal or cement concrete road.

(ii) When the road cutting is not permitted by the local administration.

A) 33 / 11 KV 3C x 300 Sq.mm cable

For Extra Loop (Ghera) to be provided near the pole on termination point and the length of cable along the pole for mounting of cable jointing kit.

33 KV Cable:-

3X240 Sq.mm to 3X400 Sq.mm

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

Excavation of pit in Hard soil (15% extra shall be payable for the designated desert area panchayat samities of Jodhpur Discom in pursuance to JdVVNL order No. 1240 dt. 18.07.13).

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

9 Mtr/ 1.2mx0.6mx1.50 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.

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 (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(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

Fixing and assembly of disc.point channel pair with pilot plates top hampers & clamps on erected single 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 & 1 set 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

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