Kerala State Electricity Board-KSEB has published Tender For Erection Of Equipments, Transformer, Bus Stringing, Cable Laying Etc In Connection With The 2Nd Phase Renovation And Capacity Enhancement Of 110Kv Ais Substation Perumbavoor. Submission Date for this Tender is 10-11-2023. Transformer Supply Tenders in perumbavoor Kerala. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Erection of 1 No. 110/66KV CT/PT/CVT/CC/220KV NCT on the already erected structure of above 1.5m height 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. |
| 2 | Conveying to the erection site and erecting carefully 1 No. 33KV CT/PT/110KV 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, including all labour charges, hire charges of tools& tackles etc. |
| 3 | 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. |
| 4 | Erection of 1 No. 110/66KV LA/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 |
| 5 | Erection of 1 No. 33KV LA/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. |
| 6 | 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. |
| 7 | Unpacking carefully and leading one set of 3 pole EHT110KV Circuit Breaker from the place of storage, including support structure , mechanism box compressor, pipe lines etc. to site , cleaning and erecting on foundation using suitable lifting tools, after disassembling necessary parts if required, to lines and levels and assembling all the parts , connecting mechanism etc. in complete shape and making ready for commissioning as per the direction of departmental officers. |
| 8 | Erection of one set 110kV Bus 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, erection of mechanism box , checking operation and aligning properly, including cutting, welding etc.complete as per the direction of departmental officers. |
| 9 | Uncoiling, paving out, stringing and fixing of bus bar using ACSR Kundah / Moose single conductor for one phase of 66/110KV bus of span up to 30M by cutting the conductor to sufficient length, crimping using compressor / bolting the two ends, washing, cleaning and drying the insulator discs, fixing the conductors to the yard structure with sufficient tension using string of insulators and hardware complete. at both ends, fixing of arcing hornes including transportation of materials from the stockyard to the site under the supervision and direction of department staff at site.(All materials will be supplied departmentally at free of cost). |
| 10 | Uncoiling, paving out, stringing and fixing of bus bar using ACSR Kundah / Moose Double conductor for one phase of 110KV bus of span up to 35M by cutting the conductor to sufficient length, crimping using compressor / bolting the four ends, washing, cleaning and drying the insulator discs, fixing the conductors to the 110kV yard structure with sufficient tension using string of double/single tension insulators and hardware"s complete. at four ends, fixing of arcing hornesat both ends, fixing of spacers between two conductors at regular intervals as specified by the dept. staff at site, including transportation of materials from the stockyard to the site under the supervision and direction of department staff at site.(All materials will be supplied departmentally at free of cost). |
| 11 | Stringing and fixing earth wire of size 7/9, 7/10 or 7/3.15 between top of the columns and to terminal tower at 33/66/110/220KV substations with compressed / bolted ends at proper tension including uncoiling and cutting of conductor , jumpering, giving earth bond connections by drawing the end of the conductor through the columns, jointing where ever necessary providing back stays at the time of stringing etc. as per the direction of the departmental officers. |
| 12 | Providinginterconnection between equipments using ACSR Moose/ Kundah/ wolfSingle conductor at both ends with compressed/ bolted ends including uncoiling and cutting of conductor as per the direction of departmental officers. |
| 13 | Providing droppers and connecting to lines / equipments or jumper between two buses without suspension insulators using ACSR Moose/ Kundah/ wolfSingle conductor at both ends with compressed/ bolted ends including uncoiling and cutting of conductor as per the direction of departmental officers. (For one phase) |
| 14 | Providing interconnection between equipments using ACSR Moose/ Kundah/ wolfDouble conductor at both ends with compressed/ bolted ends , fixing spacers at regular intervals as directed, including uncoiling and cutting of conductor as per the direction of departmental officers. (For one phase) |
| 15 | Providing droppers and connecting to lines / equipments or jumper between two buses without suspension insulators using ACSR Moose/ Kundah/ wolfDouble conductor at both ends with compressed/ bolted ends , fixing spacers at regular intervals as directed, including uncoiling and cutting of conductor as per the direction of departmental officers. (For one phase) |
| 16 | Providing droppers and connecting to lines / equipments or jumper between two buses with necessary suspension insulators for 33kV/66kV/110kV/220kV using ACSR Moose/ Kundah/ wolfSingle conductor at both ends with compressed/ bolted ends including uncoiling and cutting of conductor as per the direction of departmental officers. (For one phase) |
| 17 | Laying of departmentally supplied GI strip/Copper strip of suitable sizeincluding 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. |
| 18 | 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. |
| 19 | 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. |
| 20 | Welding one end of the bended GI strip of size 50x6mm with the riser of the already laid earth mat, welding length of 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. |
| 21 | Welding one end of the bended GI strip of size 50x6mm with the structure with a welding length of 50mm in length, 6mm thick on both sides & end of the strip and connecting other end with nuts & bolts if requiredincluding 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. |
| 22 | 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. |
| 23 | Fixing departmentally supplied marshalling kiosk in the existing PT/CT structure by making suitable fixing arrangements including cutting , welding, drilling holes etc as required. |
| 24 | Uncoiling 20/19 core 2.5sqmm, 12 core 4 sqmm control cable (Armoured or un armoured) from cable drums cutting to required length and laying through trench/pipe/cable tray grouping the same neatly using cable tie and carefullyincluding for providing loop wherever necessary and providing cable marker at both ends of cable as per direction of departmental staff at site. |
| 25 | 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 carefullyincluding for providing loops wherever necessary and cable marker, at both ends of cable as per direction of departmental staff at site. |
| 26 | 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 necessaryand cable marker at both ends of cable as per direction of departmental staff at site. |
| 27 | 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 necessaryand cable marker at both ends of cable as per direction of departmental staff at site. |
| 28 | Fixing all type of terminal connecting strip with terminal connectors in the marshalling box or panel boardwherever 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. |
| 29 | 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. For 20/19 core 2.5sqmm cable/12 core 4 sqmm cable (using gland of size 28-32mm) |
| 30 | 12/7/6 core 2.5 sqmm cable (using gland of size 25mm) |
| 31 | 4/2 core 2.5 sq mm cable/4/2 core 4 sq mm cable (using gland of size 16-22mm) |
| 32 | Doing termination of all sizes of PVC insulated copper control cable 2.5mm², 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. |
| 33 | 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 tieand cable tie neatly and carefully including cost of copper sockets and ferrules as per the direction of Departmental Officers at site. |
| 34 | Supplying aluminium cable tags punching number and alphabets up to 7 digits and binding to cable using copper wire including cost of all materials as per the direction of Board Officials at site. |
| 35 | Making of cable clamps using 25x 3 mmGI strip (hot dipped)as per no of cablesin cable tray cutting and holing to required length and for fixing as per the direction of departmental officers at site including supply of suitable nut and bolts. |
| 36 | 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 |
| 37 | Laying 1 x 500 sq mm XLPE cables in trench including drawing through pipes wherever necessary. |
| 38 | 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 |
| 39 | Laying LT/DC cables in trench including drawing through pipes wherever necessary. |
| 40 | Glanding LT / DC cable of various sizes after removing insulation, armour etc. and making necessary holes on gland plates numbering cable etc. complete including supply of gland numbering plate etc. |
| 41 | Fabrication of structures for erecting equipments. The GI & MS angles will be supplied departmentally |
| 42 | Drilling holes in yard structure |
| 43 | Cutting of steel angle in yard structure erection |
| 44 | Welding charge for welding on iron parts using arc welding as per standards |
| 45 | Erection of yard structures and assembling of columns and beams using bolt and nut including punching of holes. |
| 46 | Assembling the 10 /12.5 /25 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. |
| 47 | Covering the transformer with tarpaulin using ropes, bamboos etc. |
| 48 | 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 20Mto road, towingthe 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. |
| 49 | Loading the empty oil tank of capacity 10000/15000 Ltr. From the place of its storage using wooden blocks, lever etc. and moving the tank to a distance of 10M from switch yard then loading the same to the dept. vehicle using chain pulley etc. carefully tying the tank in vehicle accompanying the vehicle, removing ties andunloading the tank carefully by the use of wooden blocks rails, chain pulley etc. again moving the tank to a distance of 50M, for safe storage. |
| 50 | 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. |
| 51 | Supplying, laying and jointing 160 mm nominal dia PVC pipes (6 Kgf/cm²) and specials such as tees, bends, elbows, and check nuts, etc. including refilling the trenches, etc. ( For providing control cable connections) |
| 52 | Replacing all gasket with the departmentally supplied gaskets after removing old gaskets including supplying of materials required such as sand paper, glue, new teflon washers for cooling fin"s air nuts, acrolithic sheet for oil gauge etc. including cleaning of all accessories which are dismantled. |
| 53 | Overhauling of OLTC of 110/33,110/11,66/33 or 66/11kV transformers by lifting diverter switch after draining oil inside the OLTC chamber , cleaning the contacts, removing sledges from the tank, refilling the chamber with new oil supplied by the board. |
| 54 | Loading ofpower transformers of weight 20T to 30T, carefully and safely by jacking upinch 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). |
| 55 | Turning the transformer of weight 20T to 30T,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) |
| 56 | Unloadingthe power transformers of weight 20T to 30T, carefully and safely inch by inch inserting railsand 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. |
| 57 | Pulling the power transformers of weight 20T to 30T, 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. |
| 58 | Loading to the department lorry the accessories of 10/12.5/20 MVA transformer such as bushings with proper package, coolers, conservator tank, connecting pipes, bolt and nuts, wheels, rollers, fans, driving mechanism, cooler control box and oil drums etc. safely fastening them properly, accompanying the vehiclewith transformer from 110kV Substation Angamaly/ any other place to 110kV Substation Perumbavoor and unloading and stacking in convenient place, taking all safety precautions as per the direction of departmental officers. |
| 59 | Oil draining using 5000LPH capacity oil filtering plant after placing the filtering plant in a suitable place near to the transformer and empty tank. Operating the plant and filling the old oil in to empty oil barrel and shifting the same to a distance up to 50M for safe storage from a10/12.5 /20 MVA110 or 66/11kV transformer. |
| 60 | Dismantling the accessories of Transformer such as EHT and HT bushings, conservator tank, connecting pipes, bucholtz relay, radiator etc. using the required tools and leading the same for safe storage of 20MVA Transformer. |
| 61 | Re-assembling of all accessories like HV & LV bushings, conservator tank, all pipelines, cooling fins valves and relays etc of 20MVA Transformer. |
| 62 | 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. |
| 63 | 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. |
| 64 | Filling the filtered oil into the main and OLTC tank then conducting hot oil circulation till to obtain a satisfactory value of Megger and BDV for the oilincluding collecting of sample and taking BDV in each interval, taking Megger reading etc. and after filtering provide the breather. |
| 65 | Laying 3 x 300 sq mm 33kV XLPE cables in trench including drawing through pipes wherever necessary. |
| 66 | Doing out door/indoor cable termination of 3x300 mm233KV XLPE cable very carefully observing directions of manufactures and departmental staff including crimping of socket. |
| 67 | Mounting one 3x300 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 |
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