Military Engineer Services-MES has published Tender For Repair Maintenance Of Transformer Gods Ht Ug Cable Vcb Voltage Stabilizers And Other Connected Works At Af Stn Singarsi Under Age I Af Singarsi. Submission Date for this Tender is 03-04-2024. Voltage Stabiliser Tenders in Shillong Meghalaya. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 27-Mar-2024 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 03-04-2024 |
| Sl. No. | Item Description |
| 1 | Note :Prior to commencement of the subject works, the contractor needs to submit valid Electrical License in the name of himself/them self or Agreement with agency having valid Electrical License alongwith Agency"s Electrical License to the Accepting Officer for his approval through GE. In absence of such documents, no work will be executed at site and to be treated as defaulter on the Contractor"s part . In addition, Supervisor for execution of electrical works employed by the Contractor shall posses Supervisory Certificate of competency issued by concerned State Govt/Union Territory and the Worker/Tradesman for execution of Electrical Works must hold necessary permit issued by concerned State Govt/Union Territory. |
| 2 | Dismantling steel tubular poles 11 mtr long or struts, any size including connected old ACSR conductor complete all as specified and as directed. |
| 3 | Supply and fixing for steel tubular swaged pole complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified type 410 SP- 55, 11 meters long including two coats of aluminium paint over a coat of red oxide primer after preparation of surfaces complete all as specified and as directed. Note: Excavation, returning filling, and foundation concrete will be measured & paid separately. |
| 4 | M&L for painting of transformer 63 KVA to 500 KVA capacity applying two coats of synthetic enamel paint of grey colour by spraying including preparation of old surfaces, removing & cleaning of oil/greasing etc. complete all as specified and as directed. |
| 5 | Supply and fixing in replacement of switch air break, HT 11 KV gang operated vertical/horizontal type triple pole mechanically operated, mounted on 09 insulator and steel frame, with operating mechanismworked from ground level, for current rating upto 400 amps as per IS-9921 including taking down old unserviceable GOD complete all as specified & directed. |
| 6 | Supply and fixing in replacement of lightning arrester expulsion type suitable for 11 KV complete with all fitting transmission class, discharge capacity of 65 KA including taking down old unserviceable lightning arrester complete all as specified & directed by Engr-in-Charge. |
| 7 | Supply and filling of transformer oil and toping up the oil level of transformers complete all as directed by Engr-in-Charge. Make- POWER/ UNIVERSAL/ SAVITA/ INSOLE Note: Transformer oil shall be supplied in sealed container and shall confirming to IS-335. |
| 8 | Dehydration/ Filtration of Transformer Oil by means of Centrifugal Filtration Plant to achieve the specific Di-electric Strength complete all as specified and as directed. Note: Transformer oil to be used for top up shall be measured and paid for separately. |
| 9 | M&L for calibration and setting of protection relays of any make fitted on 11 KV VCBs to ensure NO ERROR including setting of each fault over current with trip time delay in accordance to feeder load and other parameters of site including synchronizing of the same with MRS/Sub Stations setting to ensure that fault shall not travel to nearest source feeder including minor repairs, replacement of wiring etc, if required all as directed by Engineer-in-Charge. |
| 10 | Shifting of Transformer of any size from any location to another location with useful mechanism all complete including disconnecting/ reconnecting HT/UG line as directed by Engr-in-Charge. Note: Hydra or any other lifting mechanism required shall be included in the quoted rate by the contractor. |
| 11 | Taking shut down, disconnecting incoming, outgoing cables, from 11 KV VCB Panel of capacity up to 630/800 Amps by opening HT bus bar chamber for cleaning the bus bar chamber, bus bars, HT insulator with CRC including insulating the bus bar & HT insulator with suitable insulation sleeve as per color code complete after carried out complete inspecting the wiring of relays servicing, depitting/ decarboning of contacts including greasing/ lubricating of revolving assembly & varnishing with drying of CTs/ PTs in VCBs & testing of complete VCBs system of its mechanical & electrical system, reassembling complete HT panel board with VCB and testing with suitable testing instruments for smooth functioning complete with remote operation all as specified & directed by Engr-in-Charge. Note: 1.The quoted rate shall deemed to include for the cost of minor parts required for making the VCBs fully functional. 2.Defective/unserviceable parts as mentioned below to be replaced shall be measured & paid separately. 3.Labour for replacing Defective/unserviceable parts as mentioned below shall deem to be included in quoted rates. |
| 12 | Supply only Hooter system operating voltage 24V/220V, AC/DC for 4 Nos VCB parallel operating system, complete with testing including all accessories such as contactor, re-set switch and cut-out complete wiring etc including taking down old unserviceable one, and as directed by Engr-in-Charge. |
| 13 | Supply only Shunt Trip Coil, operating voltage 24 Volts DC suitable for 11 KV VCB gas breaker. Make-Areva/ Schneider/CG. |
| 14 | Supply only earth fault relay (inverse) type CDG, CT sec-5, range 2.5-10A, 50 Hz suitable for 11 KV, 630/800 Amps shall be matching with the existing make of VCB or as approved by Engr-in-Charge. |
| 15 | Supply only over current relay (inverse) type CDG, sec-5 Amp, range: 1-4A, 50Hz for 11KV, 630/800 Amps shall be matching with the existing make of VCB or as approved by Engr-in-Charge. |
| 16 | Supply only spur gear for spring charging system suitable for 11 KV VCB as per existing. |
| 17 | Supply only Power Pack, Input: 110V AC, 3RH/1RH, output : 110V DC Filtered/ Unfiltered (+), cap: 200VA suitable for 11 KV, 630/800 Amps shall be matching with the existing make of VCB or as approved by Engr-in-Charge. |
| 18 | Supply only spring charge motor assembly with Gear Assembly operating voltage 220 V AC/DC suitable for 11 KV VCB of Areva/CG/as existing on site complete with required material and as directed by Engr-in-Charge. |
| 19 | Supply only stop pin for VCB spring sharing assembly complete all as specified and as directed. |
| 20 | Supply only closing coil for VCB spring charging assembly complete all as specified and as directed. |
| 21 | Supply only HT panel spouts as per existing complete all as specified and as directed. |
| 22 | Supply only HT bus bar spouts as per existing complete all as specified and as directed. |
| 23 | Supply only ammeter for VCB with selector switch complete all as specified and as directed. |
| 24 | Supply only volt meter for VCB complete all as specified and as directed. |
| 25 | Supply only fuse for potential transformer of VCB complete all as specified and as directed. |
| 26 | Supply only PT spouts of VCB complete all as specified and as directed. |
| 27 | Supply only budy counter insulator of VCB complete all as specified and as directed. |
| 28 | Supply only toggle switch complete all as specified and as directed. |
| 29 | Supply only vacuum interrupter complete all as specified and as directed. |
| 30 | Supply only mechanical lever for spring charging system of VCB complete all as specified and as directed. |
| 31 | Supply only spring charging accessories set of VCB complete all as specified and as directed. |
| 32 | Supply only TNC and neutral switch board for VCB complete all as specified and as directed. |
| 33 | Supply only CRC element complete all as specified and as directed. |
| 34 | Supply only inductor element complete all as specified and as directed. |
| 35 | Supply only female conductor for VCB spring charging assembly complete all as specified and as directed. |
| 36 | Supply only limit switch for spring charging assembly of VCB complete all as specified and as directed. |
| 37 | Supply only selector switch assembly complete all as specified and as directed. |
| 38 | Supply only incoming side spout of VCB panel complete all as specified and as directed. |
| 39 | M&L for replacement of Resin cast current transformer indoor type of ratio 120-60/5A, class 1.0, 5P10, burden: 15 VA, insulation level: 28 KV/75 KV shall be matching with the existing make of VCB or as approved by Engr-in-Charge. |
| 40 | Disconnecting Potential Transformer from incomer VCB for repairing/ replacing of 3 phase copper winding & testing with load test complete all as directed by Engr-in-Charge. |
| 41 | Supply only Control wiring with PVC insulated copper cable of size of 2.5 sqmm 8 core, for indicator lamp, control protection system etc suitable for 11KV/33KV, 630/800 Amps matching with the existing make of VCB or as approved by Engr-in-Charge. |
| 42 | Supply and fixing in replacement cross arms, bracings, supports, clamps, back plate fabricated from structural steel sections such as cannels, angles, flat iron including 16mm dia bolts, nuts, washers, welding, bending, cold or hot drilling holes for bolts/insulators in any shape and size as directed and including two coats of aluminium paint over a coat of red oxide zinc chrome primer, including taking down old unserviceable cross arms bracings complete all as specified and directed by Engineer-in-Charge. |
| 43 | M&L for maintenance of 33 KV (yard) power grid bus bar structure at MRS 33/11KV alongwith Sub-station No 1, scratching out old bubbled paint finishing the surface with two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer to steel tubular pole/PCC pole/MS structures including cross arms bracings, clamps etc including 3 strips of 30cm width red painting as directed by the Engineer-in-Charge complete all as directed by the Engr-in-Charge. Note: Colour coding will be as directed by Engr-in-charge. |
| 44 | M&L for painting to steel structure HT/LT along with bracing, supports, nut & bolt & clamps etc complete with one coat of aluminium paint after preparation on of surfaces complete all as specified and directed by Engineer-in-Charge. |
| 45 | Supply and fix cable joint kit for 11 KV grade cable for outdoor termination, heat shrink type joint complete with jointing material and accessories suitable for 3 core 95 Sqmm XLPE armoured aluminium conductor cable all as specified and directed by Engr-in-charge. |
| 46 | M&L for straight through heat shrink type cable jointing kit for 11KV (Earthed) grade cable complete with jointing materials and accessories suitable for 3 core 95 Sqmm XLPE armoured aluminium conductor cable complete all as specified and directed by Engineer-in-Charge. |
| 47 | Supply and laying XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured electric power cable (heavy duty) with aluminium conductor (multistranded), 95 Sqmm 3 core, 11000 volts grade connected with suitable size brass cable gland and aluminium lugs of required size, laid in trenches or passing through pipes including testing after laying & connecting, including taking up old unserviceable cable complete all as specified and directed by Engineer-in-Charge. |
| 48 | Excavation in trenches not exceeding 1.5 M wide and not exceeding 1.5 M in depth and getting out in soft/ loose soil complete all as specified and directed. |
| 49 | Supply and laying dry river sand laid in trenches 8cm below the cable and 15cm above the cable and punned to 18cm thick as cable cushioning and covering complete all as specified and directed by Engineer-in-Charge. Note: Punned quantity will be measured paid at this item. |
| 50 | Supply and laying of un-reinforced precast concrete cable cover, class HV, type 1 with peak, size 300mm x 180mm x 40mm including taking up old unserviceable cable cover complete all as specified and directed by Engineer-in-Charge. |
| 51 | Removing excavated material not exceeding 50 M and depositing where directed at a level not exceeding 1.5 M above starting point all as specified and directed by Engineer-in-Charge. |
| 52 | Returning, filling in including spreading, leveling, watering and well ramming in layers not exceeding 25 cm in soft/loose soil all as specified and directed by Engineer-in-Charge. |
| 53 | M&L for Silica gel (deep Sky blue color) for replacement in breathers of transformers all as specified and directed by Engineer-in-Charge. |
| 54 | Supply and fixing in replacement HT porcelain bushing complete with brass/tinned copper rod with nuts and gasket set complete for 63 KVA to 250 KVA ratings after shutdown for existing transformer complete all as specified and directed by Engineer-in-Charge. |
| 55 | All as per item No 54 here in before but 315 KVA to 500 KVA capacity. |
| 56 | Supply and fixing in replacement LT porcelain bushing complete with brass/tinned copper rod with nuts and gasket set complete for 63 KVS to 250 KVA after shutdown existing transformer as specified by Engineer-in-Charge. |
| 57 | All as per item No 56 here in before but 315 KVA to 500 KVA capacity. |
| 58 | Supply and fixing all gaskets as per existing sizes suitable to arrest leakage of transformer oil as directed by Engr-in-Charge. |
| 59 | M&L for earthingwith galvanised earth plate electrode 600 x 600 x 6 mm buried directly in ground vertically to a depth of not less than 2.25 mtr below ground level connected to galvanised iron strip 32x6 mm dia by means of nut, bolts and washers made out of galvanised iron mild steel and 40 mm dia GI pipe "light grade" for protection of earth lead and connected to control board or transformer neutral earth or as directed by Engr -in-Charge including earthing pit in PCC (1:3:6) type C1 pre-cast cover PCC cover lab of size 300 x 300 x 100 mm with one handle made out of 8 mm dia round bar, 20 mm dia GI pipe light grade for watering funnels, wire mesh and provided charcoal or coke of alternative layers of 15 cm including necessary earth work complete shown in electrical plated No 3 and testing complete. NOTE : (i) The earthing pit should be provided with proper earth pit and pit cover. (ii) The earth strip/ lead up to 7.5 m shall be deemed to be included quoted unit rate |
| 60 | Disconnecting Transformer of capacity 63KVA to 250 KVA outdoor/indoor type 11KV/433 Volts supply system electrically both side, earth terminal and taking down carefully from pole/ mounted on PCC platform and carrying to workshop for repair complete all as specified and as directed by Engr-in-Charge. |
| 61 | M&L for rewinding of Transformer HT coil with super enameled/paper coated copper wire of existing gauge including all associated insulating materials such as separators etc. complete varnishing heating including disconnecting of top cover, decanting of transformer oil, storing the same in suitable container, disconnecting live parts, dismantling bushing, lifting of core assembly, checking the windings, cleaning of cooling tubes, conservator and all internal connections after necessary all repairs and rewinding, assemble the complete transformer and refilling oil after necessary filtration including all internal connections etc of any type/capacity of transformer all complete as directed by the Engr-in-Charge. Note: Filtration of oil shall be measured and paid separately. |
| 62 | All as per item No 61 above but for LT winding. |
| 63 | Surface dressing not exc. 15cm deep in soft/loose soil and cleaning away all grass vegetation, saplings, shrubs, brushwood, undergrowth roots, and trees not exc. 30cm girth in surrounding of transformers, LT panels, 02/04 pole structures etc. at various sub-station/E/M installations and removing rubbish upto a distance exc. 200m but n.exc. 250m outside of periphery of the area under clearance complete all as directed by the Engr-in-Charge. |
| 64 | M&L PCC 1:4:8 type D 2 (using 40mm graded stone aggregates) as in foundation filling & mass concreteetc all complete as specified and directed. |
| 65 | M&L PCC 1:2:4 type B 1 (using 20mm graded stone aggregates) as in benching/ copping around poles etc. including necessary form work complete all as specified and directed. |
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