ELECTRIC WORK UNDER TN-174

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

(B) Lattice Tower /Size of pit

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

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.

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.

Within 10 Kms.

Safe Carriage of 6.35/0.24 KV Single phase distribution transformer including loading /unloading from store to site (These charges will be 1.5 times for both sides).

Within 10 Kms.

Transportation of Single phase Sub-Station Structure from sub-division store to the site & Erect it on the existing pole at a height of 5 Mtr. from the ground level

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

Fixing of cross arms with clamp on erected support as per design. The nuts &bolts will be supplied by the contractor as per Nigams specification for which payment will be made as per prevailing Discom store issue rates.

11 KV cross arms(Dismantle@60%)

Fixing of top hampers with clamp on erected support as per design. The nuts &bolts will be supplied by the contractor as per Nigams specification for which payment will be made as per prevailing Discom store issue rates.

11 KV Top Hampers(Dismantle@60%)

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

Dismantle@60%

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.

Dismantle@60%

Fixing of 11 KV pin insulator with pins.

Dismantle@60%

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.

11kv Horn Gap fuse set.

Dismantle@60%

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,

10 and 16 KVA

25 and 40 KVA

Installation testing as per Nigams norm & commissioning of 6.35/.24 KV 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,

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

ACSR WEASEL(Dismantle@50%)

Drawing of overhead ABC conductor (Areal bunched cable)on existing erected pole/support including laying. Jointing,stringing complete in all respect.

1cX25 + 25 Sq mm

3cx25 + 25 Sq mm

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.

Providing and fixing of G.I. Pipe B-Class (IS:1239 marks) at the starting and finishing point of 33 & 11 KV under ground cables and to lay & clamp vertically with the existing support including labour charges.

Providing and fixing of G.I. Pipe of 125 mm diameter. B-Class (IS:1239 mark),at the starting and finishing point of 11 KV under ground cables and to lay & clamp vertically with the existing support including labour charges.

Installation of cable termination / straight through joints on 11KV Aluminium conductor XLPE /PILCA Cable with outdoor/ indoor termination end and /or straight through joint including required excavation / remoral/ fixing / refixing/ testing etc. as required

A) (I) Outdoor end terminal 3x35 Sq mm to 3x185 Sq mm

C) (I) Straight through joint 3x35 to 3x185 Sq mm

If the cable jointing kits of HT/LT are not available with Nigam,then the unit officer will obtain NOC from ACOS & the contractor will supply the same as per latest SIR +10%( profit of approved vendor)

(ii) Outdoor end terminal 3x35 Sq mm to 3x185 Sq mm

10% profit as per ARC

(ii) Straight through joint 3x35 Sq mm to 3x185 Sq mm

10% profit as per ARC

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.

B) 33 / 11 KV below 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.

11 KV Cable:-

3X35 Sq.mm to 3X185 Sq.mm

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