Installing a 5MVA, 33/11 KV Transformer station with three 11KV feeder outlet at 220KV Substation, Ambalamugal

Loading one set 11KV indoor VCB panel with truck from the place of its storage to department lorry using required lifting device, without causing any damage to equipment & its parts

Unloading one set 11KV indoor VCB panel with its truck from department lorry to substation site by using required lifting device, without causing any damage to equipment parts and lift the same to a pace for safe storage.

Unpacking at the place of storage and transporting 11KV indoor VCB/SF6 switch gear panel and its accessories to the place of erection and erecting after fixing foundation bolts by chipping concrete wherever necessary, tightening, keeping lines and levels taking all safety precautions including erection of potential transformers as per the direction of departmental officers.

Interconnection of panels and 11KV bus bars after opening covers, earthing, inter panel wiring, etc. and making ready for commissioning of breaker as per the direction of the departmental officers.

Loading 3x300 sq. mm XLPE cable from its place of storage to department lorry and properly without causing any damage to its insulation and make ready for transporting as per the direction of department officers.

Loading 1x500 sq. mm XLPE cable from its place of storage to department lorry and properly without causing any damage to its insulation and make ready for transporting as per the direction of department officers.

Unloading 3x300 sq. mm XLPE cable from department lorry to substation site and stacking properly without causing any damage to its insulation as per the direction of department officers.

Unloading 1x500 sq. mm XLPE cable from department lorry to substation site and stacking properly without causing any damage to its insulation as per the direction of department officers.

Laying 1 x 500 sq mm XLPE cables in trench including drawing through pipes wherever necessary.

Excavating trenches of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 1.5 m, including getting out the excavated soil. and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc. and disposing of surplus excavated soil as directed, within a lead of 50 m: Pipes, cables etc. exceeding 80 mm dia but not exceeding 300 mm dia

Laying 3 x 300 sq mm XLPE cables in trench including drawing through pipes wherever necessary. (Substation Data 65 (a))

Doing out door / indoor cable termination of 3x300 mm2 11KV XLPE cable very carefully observing directions of manufactures and departmental staff including crimping of socket

Doing out door / indoor cable termination of 1x500 mm2 11KV XLPE cable very carefully observing directions of manufactures and departmental staff including crimping of socket

Mounting one 3x300 mm2 XLPE in door cable termination of structures very carefully without causing any damaged to the drilling holes wherever necessary as directed by the departmental officers.

Mounting one 1 x 500 mm2 out door / indoor cable termination of structures very carefully without causing any damaged to the drilling holes wherever necessary as directed by the departmental officers.

Fixing name board on the RMU / 11kv Panel including cost of material and labour for painting, printing, lettering, fixing etc complete

Laying of departmentally supplied GI strip of suitable size including cleaning and neatly bending of strips ,cutting, removing of metal/earth in the yard and burying earth strip to the required depth re-doing the yard metalling as per the direction of the departmental officers.

Loading MS / GI materials hard ware fittings of line work and clamps for equipments and bus from the place of its storage to department lorry and make it ready for transportation as per the direction of departmental officers.

Unloading MS / GI materials, hard ware fittings of line work and clamps for equipments and bus from department lorry to substation site and stacking for proper storage as per the direction of departmental officers.

Erection of yard structures and assembling of columns and beams using bolt and nut including punching of holes.

Loading one 33kV LA from the place of its storage to department lorry, if required, after dragging up to 50M using suitable lifting device carefully without causing any damage to equipments and fastening in the lorry make it ready for transportation as per the direction of the department officers.

Unloading one 33KV LA from department lorry to substation site using suitable lifting device and dragging to safe place without causing any damage to CT as per the direction of the department officers.

Erection of 1 No. 33KV LA on the already erected structure after opening of crates at the place of storage leading to site carefully, keeping lines and levels as per the direction of the departmental officers.

Loading one 33kV CT from the place of its storage to department lorry using required lifting device without causing any damage to equipment and its parts.

Unloading one 33KV CT/PT/CVT/CC from department lorry to substation site using suitable lifting device and dragging to safe place without causing any damage to CT as per the direction of the department officers.

Conveying to the erection site and erecting carefully 1 No. 33KV CT/ PT /NCT(52/36kV) on the already erected structure after opening of crates at the place of storage leading to site carefully keeping at vertically not allowing tilting from vertical position more than the specified angles, keeping lines and levels as per the direction of the departmental officers, including all labour charges, hire charges of tools & tackles etc.

Loading one set 33KV Line Isolator with its insulator stacks, supporting channels, connecting pipes, isolating rods, earth switches, mechanism box, structures and all its accessories safely without causing any damage using necessary lifting devices to department lorry and fastening for transportation.

Unloading one set 33KV Line isolator with its insulator stacks, supporting channels, connecting pipes, isolating rods, earthing rods, mechanism box, structures and all its accessories safely without causing any damage using necessary lifting devices from department lorry to substation compound and stacking properly for safe storage.

Erection of one set 33KV line Isolator on the already erected structure including opening crates and conveyance of all accessories from the place of storage to the place of erection to lines and levels including erection of mechanism box checking operation and aligning properly as per the direction of departmental officers.

Loading one 11kV CT from the place of its storage to department lorry using required lifting device without causing any damage to equipment and its parts.

Unloading one 11KV CT/PT/CVT/CC from department lorry to substation site using suitable lifting device and dragging to safe place without causing any damage to CT as per the direction of the department officers.

Erection of 1 No. 11KV CT/PT/11KV NCT on the already erected structure after opening of crates at the place of storage leading to site carefully keeping at vertically not allowing tilting from vertical position more than the specified angles, keeping lines and levels as per the direction of the departmental officers.

Loading one 11kV LA from the place of its storage to department lorry, if required, after dragging up to 50M using suitable lifting device carefully without causing any damage to equipments and fastening in the lorry make it ready for transportation as per the direction of the department officers.

Unloading one 11KV LA from department lorry to substation site using suitable lifting device and dragging to safe place without causing any damage to CT as per the direction of the department officers.

Erection of 1 No. 11KV LA (station type ) /11KV Post insulator on the already erected structure after opening of crates at the place of storage leading to site carefully, keeping lines and levels as per the direction of the departmental officers.

Providing interconnection between equipments using ACSR Kundah/ wolf Single conductor at both ends with compressed/ bolted ends including uncoiling and cutting of conductor as per the direction of departmental officers. ( Substation Data Item No. 27)

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. All kinds of soil.

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift upto 1.5 m.

Cutting 32mm MS rod in required length etc complete as per the direction of the departmental officers.

Bending 32 mm MS rod for crossing cable trench/foundations/risers etc. ( Substation Data Item No.35 (b))

Laying of earth mat of required size as specified using 40/32/25mm MS rod including levelling lowering and placing in trenches, complete as per the direction of departmental officers.

Driving down the ground electrode upto a depth of 3m from the already taken earth pit as directed by the departmental officers.

Welding of overlapping joints for mat,riser lap joints with 32mm MS rod placed in trenches, having 150mm in length 6mm in thick on both sides of the rod and both ends of overlapped MS rods with 6mm welding thickness after cleaning the surfaces neatly. Charges includes cost of low hydrogen DC electrode (No. E7018), hire charges of DC arc welding set and tools and plants required, current charges including labour charges for holding MS rod in position and applying two coats of anti corrosive paints at the welded joints etc. complete as per the directions of department officers.

Welding the nodal points (cross joints ) in the trenches at two sides to a thickness of 6mm after cleaning the surface neatly. Charges includes cost of low hydrogen DC electrodes (No. E7018), hire charges of DC welding set and tools and plants required, current charges, labour charges for holding MS rod in position and applying two coats of anti corrosive paints at the welded joints etc. complete as per the directions of departmental officers.

Welding the ground electrode with the main electrode, after cleaning the surface neatly. Charges includes cost of low hydrogen content DC electrodes (No. E7018), hire charges of DC arc welding set, tools and plants, current charges, labour charges for holding MS rod in position and applying two coats of anti corrosive paints at the welded joints etc. complete as per the directions of departmental officers.

Laying of departmentally supplied GI strip of suitable size including cleaning and neatly bending of strips ,cutting, removing of metal/earth in the yard and burying earth strip to the required depth re-doing the yard metalling as per the direction of the departmental officers.

Welding one end of the bended GI strip of size 50x6mm with the riser of the already laid earth mat, welding 150mm in length, 6mm thick on both sides & end of the strip & other end of the strip with yard structure at 2 points 50mm apart each welding points having 50mm length and 6mm thick on both sides & end of the strip including the charges for connecting the strip with structure using bolted joints as per the directions of the department officers. Charges includes hire charges of DC arc welding set, current charges, cost of low hydrogen content DC arc welding electrodes(No.E7018) cost of anti corrosive paint etc. Complete.

Welding overlapping joints of 50x6mm GI strip with 50mm long, 6mm thick welding on all three sides after doing 2 Nos. bolted joints at the centre as specified after cleaning the surface. Charges includes hire charges of DC arc welding set, current charges, cost of low hydrogen content DC arc welding electrodes( No.E7018) cost of anti corrosive paint etc. Complete.

Welding one end of the bended GI strip of size 50x6mm with the riser of the already laid earth mat, welding 150mm in length, 6mm thick on both sides & end of the strip and connecting other end with nuts & bolts if required as per the directions of the department officers. Charges includes hire charges of DC arc welding set, current charges, cost of low hydrogen content DC arc welding electrodes(No.E7018) cost of anti corrosive paint etc. Complete.

Uncoiling 19 core 2.5sqmm, 12 core 4 sqmm control cable (Armored or unarmored) from cable drums cutting to required length and laying through trench/pipe/cable tray grouping the same neatly using cable tie and carefully including for providing loop wherever necessary and providing cable marker at both ends of cable as per direction of departmental staff at site.

Uncoiling 12/7/6 core 2.5 sq mm control cable (armoured and un armoured) from cable drums and cutting to required length and laying through trench/pipe/cable tray grouping the same neatly using cable tie and carefully including for providing loops wherever necessary and cable marker, at both ends of cable as per direction of departmental staff at site.

Uncoiling 4/2 core 2.5sqmm control cable (armored or unarmored) from cable drums and cutting to required length and laying through trench/pipe/cable tray neatly and carefully including for providing loops wherever necessary and cable marker at both ends of cable as per direction of departmental staff at site.

Uncoiling 5/4/3/2 core 4sqmm control cable (armoured or un armoured) from cable drums and laying through trench/pipe/ cable tray neatly and carefully including for providing loops wherever necessary and cable marker at both ends of cable as per direction of departmental staff at site.

Termination of cables in panel by using cable glands of fixing the cable rigidly by any means as per direction of departmental staff at site charges include for providing necessary suitable hole in the gland plate etc. -19 core 2.5sqmm cable/12 core 4 sqmm cable (using gland of size 28-32mm)

Termination of cables in panel by using cable glands of fixing the cable rigidly by any means as per direction of departmental staff at site charges include for providing necessary suitable hole in the gland plate etc. 12/7/6 core 2.5 sqmm cable (using gland of size 25mm)

Termination of cables in panel by using cable glands of fixing the cable rigidly by any means as per direction of departmental staff at site charges include for providing necessary suitable hole in the gland plate etc. 4/2 core 2.5 sqmm cable/4/2 core 4 sqmm cable (using gland of size 16-22mm)

Doing termination of all sizes of PVC insulated copper control cable 2.5 mm², pealing, providing number and letter ferrules in the wire, stripping ends, crimping with suitable lugs and connecting to the terminals in the panel board and marshalling kiosk etc., neatly and carefully including cost of copper sockets and ferrules as per the direction of Departmental Officers at site.

Doing termination of all sizes of PVC insulated copper control cable 4.0 mm², pealing, providing number and letter ferrules in the wire, stripping ends, crimping with suitable lugs and connecting to the terminals in the panel board and marshalling kiosk etc., using cable tie and cable tie neatly and carefully including cost of copper sockets and ferrules as per the direction of Departmental Officers at site.

Supplying aluminium cable tags punching number and alphabets upto 7 digits and binding to cable using copper wire including cost of all materials as per the direction of Board Officials at site.

Supplying, laying and jointing 63mm nominal dia. PVC pipes ( 4Kgf/cm²) and specials such as tees, bends, elbows, checknuts, etc. including refilling the trenches, etc. complete. ( Price 50.18.9.7.2)

Fabrication of structure for erection equipments. The GI and MS angles will be supplied departmentally

Cutting of steel angels in yard structure erection

Welding charge welding on iron parts using arc welding as per standards

Drilling holes in yard structure

Preparing wiring schedule per transformer / feeder bay of 110 or 66kV with details of type of cable, core and colour, ferrule No. and terminal no of equipments/panels including giving full details in A4 sheet with computer print providing outer border line and sheet no etc. and supplying in the shape of book with special binding etc. and assisting the departmental officers at the time of relay testing and commissioning.

Fixing all type of terminal connecting strip with terminal connectors in the marshalling box or panel board wherever necessary (terminal connecting strip will be supplied departmentally ) charges includes for providing necessary suitable hole etc complete as per direction of departmental staff at site.

Unpacking the transformer / feeder C&R panels, 110V battery charger, OLTC cubicle LT panel at the place of storage transporting to the place of erection and erecting after providing foundation bolt keeping to lines and levels as per the direction of departmental officers.

Collecting from store or substation wherever available tools and materials such as jacks pulling and lifting machines, rails, sleepers, plies, ropes, empty drums, dummy plates, bolts and nuts gaskets, etc. including loading and unloading in department vehicle and accompanying and returning the same after completing the work as per the direction of departmental officers. ( Only if required)

Loading of power transformers of weight below 20T , carefully and safely by jacking up inch by inch using rails sleepers etc. and placing on the tractor trailer safely, positioning correctly and fastening with steel ropes tightening using turn buckles etc. with out causing damage to transformer and accessories as per the direction of the departmental officer observing all safety precautions and make it ready for transporting (Distance to be specified).

Transporting Charges For one full low bed floating axle trailer for shifting one 5 MVA Transformer From Alangad substation to Ambalamugal Substation

Accompanying the tractor trailer with transformer 5 MVA from place of storage to Ambalamugal Substation with sufficient men to give supports for lifting of service wire/ telephone wires, HT/EHT lines etc. where ever necessary using bamboo structures and giving signals to vehicles also removing other obstruction on the way, filling the gutters where ever necessary using earth, metal etc.

Unloading the power transformers of weight below 20T , carefully and safely inch by inch inserting rails and trawling to the platform made with sleepers and thus lowering very carefully inch by inch for placing on the rail track and hoisting to the plinth with out causing damage to transformer and accessories as per the direction of the departmental officer observing all safety precautions.

Turning and shifting 6000 L/H capacity transformer oil filtering plant or wheel mounded 10000/15000 Litre. oil tank with all accessories for a distance of 20M to road, towing the machine with department lorry by the use of D-Shackle and iron ropes , accompanying the lorry including supervision through out the journey especially in turnings to avoid falling of plant. Remove the machine from the lorry and drags up to 10M for safe storage where ever required.

Pulling the power transformers of weight below 20T , on the rail track, travelling for a distance up to 30M, using sleepers, rails, jacking, pulling and keeping ready for placing on the correct plinth as per the direction of departmental officers at site, safely without damaging any equipments and observing all safety precautions.

Turning the transformer of weight below 20T ,up to 90 degree using required tools safely and taking all precautions as per the directions of the departmental officers ( only if it is absolutely necessary and where departmental crane is not available)

Assembling the 10 /12.5 MVA, 110/11 or 66/11KV transformer with all accessories in complete shape and filling oil if required including arresting the movement of the transformer by locking as per the direction of the departmental officers.

Covering the transformer with tarpaulin using ropes, bamboos etc.

Giving three phase connection to the filter unit from the supply mains using cable including fitting three numbers of fuse units near the filter unit and laying the cable from control room to filter unit and trial run of filter unit after giving connection etc. complete. ( Only if found absolutely necessary and where departmental staff is not available ).

Hot oil circulation after draining oil from transformer, evacuating the transformer by using vacuum pump after providing LT connection to the pump , connecting the hose to transformer, operating carefully and continuously for attaining sufficient vacuum and keeping in vacuum for 24 hours and operating filter unit carefully and continuously for 24 hours except halt due to poor voltage and trouble in filter plant etc complete as per the direction of dept. officers.

Filling the oil in to 10000-15000 Ltr. capacity tank after bringing the new oil barrel from its place of storage and circulating the same to obtain the necessary value.

Connecting Vacuum Pump and creating vacuum pressure up to -760 Hg/mm and keeping the same for 24 Hours and monitor the same after leading the plant to yard including connecting equalising connection for OLTC.

Disconnecting the power connections to the filtering plant/ vacuum pump, coiling the cable, disconnect the hoses and coiling them and folding and removing tarpaulin used for covering the transformer, moving the filter plant and vacuum pump to a distant place as directed by the department staff. ( where departmental staff is not available and is found absolutely necessary).

Retrieving 1 x 500 sq mm 33kV XLPE cables in trench including removal of sand/spoil etc as required and stacking at suitable place

Laying 1 x 500 sq mm33 KV XLPE cables in trench including drawing through pipes wherever necessary.

Doing out door/indoor cable termination of 1x500 mm2 33KV XLPE cable very carefully observing directions of manufactures and departmental staff including crimping of socket

Mounting one 1x500 mm2 XLPE out door cable termination of structures very carefully without causing any damaged to the drilling holes wherever necessary as directed by the departmental officers

Applying priming coat after scraping with ready mixed redoxide zinchromate primer of approved brand and manufactures on galvanized iron or steel structures

Painting with synthetic enamel paint of approved brand and manufacture to give an even shade : Two or more coats on new work

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