Military Engineer Services-MES has published Repairs And Preventive Maintenance To The Ht Switch Gears Like Transformer , Vcb , Rmu , Relays , Servo Voltage Stabilizer And Isolation Transformer And Other Connected Items At Af Station Bhuj. Submission Date for this Tender is 17-04-2021. Circuit Breakers Tenders in BHUJ Gujarat. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 30-Mar-2021 | REVISED BoQ | BOQ | 10-04-2021 |
| 2 | 10-Apr-2021 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 17-04-2021 |
| Name of Work: REPAIRS AND PREVENTIVE MAINTENANCE TO THE HT SWITCH GEARS LIKE TRANSFORMER, VCB, RMU, RELAYS, SERVO VOLTAGE STABILIZER AND ISOLATION TRANSFORMER AND OTHER CONNECTED ITEMS AT AF STN BHUJ | |||||
|---|---|---|---|---|---|
| Sl. No. | Item Description | Item Code / Make | Quantity | Units | |
| 1 | 1 | M & L for taking down carefully Transformer / Isolation transformer of capacity up to 315 KVA, any make, any type from pole / plinth/ base, disconnecting HT & LT side connections, earthing strip of transformer, supporting angles, cross arm, shifting / transporting transformer carefully from the site to the workshop opening the top cover of the transformer, bushing, draining of oil from the transformer, lifting the core complete taking out defective coils from the core, cleaning the tank and reassembling the transformer after carrying out the repairs/replacement of worn out part, ovening the complete unit till to get desired megger value, transporting returning back to the site installing re-commissioning and testing of the transformer at its original place, connecting up HT & LT sides, earthings, supports / cross arms etc all as directed by Engr-In-Charge\nNote:\n(i) Spares, Rewinding of transformer, reinsulating&heating if required will be measured and paid separately under respective Sch'A' items\n(ii) T&P required, rent of vehicle, crane, labour involved for shifting, lifting are deemed to be included in the quoted rate. | 5 | Each | |
| 2 | 2 | Supply only Top cover gasket made up of 5 mm thick cork sheet all as specified and directed. | 5 | JOB | |
| 3 | 3 | Supply only HT bushing, porcelain vitreous brown body suitable for 11 KV as per IS 3347 all as specified and directed.. | 15 | Each | |
| 4 | 4 | Supply only LT bushing, porcelain vitreous brown body 1100 V grade as per IS 3347 all as specified and directed. | 20 | Each | |
| 5 | 5 | Supply only HT brass studs along with washers for one terminal 11 KV transformer all as specified and directed. | 15 | Each | |
| 6 | 6 | Supply only LT brass studs along with washers for one terminal 1100 Volts grade transformers all as specified and directed. | 20 | Each | |
| 7 | 7 | Supply only Breather assembly complete with silica GEL all as specified and directed. | 8 | Each | |
| 8 | 8 | Supply only Temp level indicator including its bolts, nuts, gasket etc complete all as specified and directed. | 8 | Each | |
| 9 | 9 | Rewinding old / burnt out HT/LT coils by super enameled copper winding wire / strips of appropriate size of super quality (as per existing material & size of transformer coils) including, insulating, varnishing, heating, keeping coils in position, etc for transformer up to 315 KVA all as specified and directed. | 340 | KG | |
| 10 | 10 | Re-insulation of heated / weak LV coils of transformer by super quality insulating materials, heating, varnishing , etc complete to improve IR value etc complete all as directed by Engr-In-Charge. | 9 | PER COIL | |
| 11 | 11 | M & L for Dehydration and filtration of transformer oil / Voltage stabilizer / VLE switch & Isolation Transformer oil by using mobile dehydration and filtration plant, heating and filtering the transformer oil to be carried out till the di- electric strength reaches value of 45 KV or above in one minute, for any capacity of transformer/Voltage stabilizer/VLE Switch & Isolation Transformer (25 to 315 KVA/ VLE SWITCHES) all as specified and directed.\nNote: Cost of T&P required for dehydration and filteration should be deemed to be included in the quoted rate. No extra cost will be permissible to the contractor in this regard. | 12000 | Ltrs | |
| 12 | 12 | Supply and topping/replacement of transformer oil having di-electric strength above 50 KV/mm of Transformer chamber and conservator with new transformer oil up to the required level in any type and capacity of transformer / Voltage stabilizer / OCB all as directed by Engr-In-Charge.\nNote: Transformer oil brought by the contractor at site shall be in seal packing drum having ISI mark as per IS 335/1983 of make Savita, Asian or equivalent. | 1000 | LTR | |
| 13 | 13 | M&L for servicing of GOD assembly , cleaning the rusted surfaces of fixed and moving contacts, applying grease , replacing the wornout jumper clamps / jumpers upto 2mtr length, nuts/bolts etc, checking for proper alignment and smooth working of GOD all as directed. \nNote:- (i) The items for replacement of GOD,DO,HT joints etc will be measured and paid separately, if required) | 25 | Each Job | |
| 14 | 14 | S & F in replacement of Digital protective relay ( for HT VCB) of 3 phase over current /earth fault with high set C.T. Rating 1A or 5A , field selectable , Aux.supply 24V-240V AC/DC and out put contacts 4 NO Type .Cat Part No.MC61ANX4000 Make :-L & T or equivalant crompton greaves CG 14N relay as approved by GE. | 5 | Each | |
| 15 | 15 | M & L for Calibration of VCB / RMU relay by injecting High voltage through CTS checking the over load system of VCB upto 90 % rated load and artificial fault creation and setting of relay by 10 to 15 % of rated load removing u/s overload and earh fault relay including connection with power pack.Opening out the trolly checking the operation of VCB mechanically and electrically through shunt trip coil including energizing of springs automatically including checking of TNC switch.Testing and commissioning all as directed.\nNote:- (i) Maintenance to be carried out the reps of authorised firm.\n(ii) After completion test certificate shall be furnished from firm. | 40 | Each Job | |
| 16 | 16 | M & L for maintenance of VCB / RMU11 KV, 400/ 630 /1200 Amps including removal of VCB trolley, cleaning of all copper male and female contact, tightening of all connections, checking of all auxiliary contacts, control wiring, servicing of relays, etc. refixing the VCB trolley to its original position including proper setting of manual/motorize operation of VCB, checking/setting of tripping system, etc complete.\nNote:- (i) Maintenance to be carried out the reps of authorised firm.\n(ii) After completion test certificate shall be furnished from firm. | 60 | Each Job | |
| 17 | 17 | M & L for in replacement for 11/12 KV 20/40 Amp, fuse links for distribution circuits (for use in OCB) suitable for MEI make 11 KV VLE unit fuse carries assembly as approved by GE. | 15 | Each | |
| 18 | 18 | S & F in replacement Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size up to 120 Sqmm 3 core all as specified and directed. | 5 | Each | |
| 19 | 19 | S& F Battery for HT VCB auto control of 7AH 12V for power bank all as specified and directed. | 15 | Each | |
| 20 | 20 | S & F in replacement of Potetial Transformer 11 KV / 110 V 50Hz of VCB all as directed by Engr-In-Charge. | 2 | Each | |
| 21 | 21 | S & F in replacement of Current Transformer of VCB upto 200 Amps all as directed by Engr-In-Charge. | 3 | Each | |
| 22 | 22 | M & L for Maintenance / Servicing of Servo Voltage stabilizer by OEM rep of capacity upto 160 KVA 3 phase 440 volts 50 Hz including cleaning, checking oil level and brazing / soldering if required , replacement of control panel spare parts as electronic circuit card / volt meter / amp meter / Trigger Transformer etc of servo Voltage Stabilizer .checking each phase voltage, Testing and commissioning complete all as directed.( Note: Spare parts if required shall be paid separately) | 4 | Each | |
| 23 | 23 | S&F in replacement of Electronic circuit card (PCB) all as specified and as directed by Engr-In-Charge. | 4 | Each | |
| 24 | 24 | S &F in replacement of Voltmeter(Digital / analog) all as specified and as directed by Engr-In-Charge. | 8 | Each | |
| 25 | 25 | S&F in replacement of Amp meter with CT (Digital / analog) all as specified and as directed by Engr-In-Charge. | 4 | Each | |
| 26 | 26 | S&F in replacement of Trigger Transformer all as specified and as directed by Engr-In-Charge. | 4 | Each | |
| 27 | 27 | S & F in replacement of Microcontroller three phase (3ct sencing) APFC relay IPFC CS 1003, 8 steps incl LCD type with dual colour backlight aux supply 90-550 VAC configure alarm settings, supports intelligent algorithm, alarm indoication on display, programmable fan control, Dual password protection, automatic CT polarity detection, NTC temp sensor, Power factor measurment range:0.8 lag to 0.8 lead & Automatically switches between various capacitive bank complete all as specified and directed. | 3 | Each | |
| 28 | 28 | M & L for Shifting of Transformer / Isolation Transformer / Voltage stabilizer from one locationg to other location of any capacity including removing the existing HT/LT connection of any type transformer and transporting the same to desired location within Airforce stn bhuj area including 308 TRU (mundra road). The same installing connecting HT/LT cables, Earthing testing and commissioning all as directed Engr-In-Charge. | 12 | Each | |
| 29 | 29 | M & L for scraping of old painted surfaces of Two pole structure including all nuts bolts,GOD/DO,channel,cross arm & street light brackets etc. complete and painting with a coat of silver colour aluminium paint all as directed by Engineer-in-Charge. | 25 | Each Job | |
| 30 | 30 | M & L for scraping of old painted surfaces of Four pole structure including all nuts bolts,GOD/DO,channel,cross arm & street light brackets etc. complete and painting with a coat of silver colour aluminium paint all as directed by Engineer-in-Charge. | 8 | Each Job | |
| 31 | 31 | M&L in replacement for 11/12 KV 1 / 3.15 Amp, fuse links for distribution circuits (for use in VCB PT) suitable for VCB voltage Transformer unit fuse carries assembly all as specified and directed. | 9 | Each | |
| 32 | 32 | S & F in replacement of VCB spring Charging motor 24 Volts DC (as per site requirment) with gear assembly all as directed by Engr-In-Charge. | 12 | Each | |
| 33 | 33 | S & F in replacement of Power Pack for VCB control system of 230 Input and 24 Volts output with fuse protection all as directed by Engr-In-Charge. | 6 | Each | |
| 34 | 34 | Supply and fix in replacement Cable jointing kit for 11 KV (Earthed) grade cable for Straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size up to 120 Sqmm 3 core all as specified and directed. | 10 | Each | |
| 35 | 35 | Excavation in trenches not exc. 1.5m wide and not exc. 1.5m in depth for foundation etc or for shafts, wells, cesspits, manholes pier holes etc not exc. 10sqm on plan and not exc 1.5m in depth and getting out in Hard/Dense soil complete all as specified and as directed by Engineer-in-Charge. | 273 | Cum | |
| 36 | 36 | Returning filling in soil and including spreading leveling watering and well ramming in layers n.exc. 25 cm thick complete all as specified and directed | 190 | Cum | |
| 37 | 37 | Removing excavated soil to a distance n.exc. 50 mtr and depositing where directed at a level n.exc. 1.5m above the starting points complete all as specified and directed | 83 | Cum | |
| 38 | 38 | M & L for providing dry river sand as in cushioning to UG cables including gently punning down of sand in layers all as directed and specified. \n( Note : For measurement purpose punned thickness shall be considered) | 55 | Cum | |
| 39 | 39 | M & L for unreinforced precast concrete cable covers CLASS HV type I, flat size 300 x 180 x 40 mm laid transverse to cable all as specified and directed. | 3553 | Each | |
| 40 | 40 | S&F in replacement of GI tubing 100 mm bore light grade for encasing cables for mechanical protection, laid under plinth/floors/ roads/ path /culverts or fixed on walls/on poles by means of MS clamps with necessary bolts, nuts and washers all as specified of sizes : - | 42 | RM | |
| 41 | 41 | M & L for scrapping of old painted/oily surface of transformer including all nut bolts, channels by wire brush with cottan waste and painting with two coat of approved synthetic enamel paint as per the existing paint by sparay gun and writing SM No all as per ground condition as specified and directed. | 40 | Each | |
| 42 | 42 | Taking out unserviceable / serviceable HT cables from excavated trenches, ducts, wall, pole etc including removing cable covers, sand, cable joints, pipes, clamps etc, taking out old serviceable cables for reuse and removing unserviceable cables, covers etc, for the sizes of cables 120 Sqmm all as specified and directed by Engr- in -charge. | 750 | RM | |
| 43 | 43 | S & F in replacement of serviceable HT 11 KV 3 core 120 sqmm of size cable in trenches/fixed to poles/wall, XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables( HT ), heavy duty with aluminium conductor, 11000 volts (earthed) grade 120 Sqmm x 3 core all as specified and directed by Engr-In-Charge.(Note : (i) Excavation, earthwork, cable joints, sand coushing & cable cover will be measured and paid separately if required) | 550 | RM | |
| 44 | 44 | Laying only in replcement of HT 11 KV 3 core 120 Sqmm cable in trenches/fixed to poles/wall, XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable( HT ), heavy duty with aluminium conductor, 11000 volts (earthed) grade 95/120 Sqmm x 3 core all as specified and directed by Engr-In-Charge. | 200 | RM | |
| 45 | 45 | M & L for erection of Precast HT cable route / cable path indicator,made out of PCC 1:2:4 ,type Bo,12.5 mm graded stone aggregates of size 100 Cm (Height) x 12 Cm (Width) x 8 Cm (Thichness), painted with orange colour lettering synthetic paint and letters 4 inch "DANGER,HT 11 KV CABLE" to be written with black colour lettering synthetic paint and embedded in PCC block 1:3:6 type C2 (using 40mm graded aggregate) of size 15cm x 15cm x 20cm including necessary excavation for PCC block c, placed at interval of every 30 M ,complete all as specified and as directed by Engr-in-Charge. | 30 | Each | |
| 46 | 46 | Supply, febricate, test and commisioning in replacement of factory made HT out door distribution panel Single door of size 1000x1000x600 mm including locking arrengment cubical type dust proof , weather proof , vermin proof asthetically designed, having atleast IP -54 degree of ingress protection , fabricated from 3 mm thick CRCA sheet with front & rear opening including bus bar chamber , continuous GI strip earth bus bar , 3 strips of copper bus bar of 400 Amps capacity, insulated color sleaves, procelain/epoxy insulators, rail channels cable alloy, danger notice board (11000 Volt) including made out of 14 guage MS sheet over angle iron frame of size 50x50x6mm , 60 cm grouted in ground floor and 60 cm above GL including necessary excavation ,foundation .PCC etc complete duly powder coated of approved color all as directed. | 2 | Each | |
| 47 | 47 | S & F synthetic insulating mat of size 2mx1mx19mm all as specified and as directed by Engr-in-Charge. | 10 | Each | |
| 48 | 48 | S & F in replacement of procelain/epoxy insulators use in HT feeder pillar boxes as per sample all as specified and directed. | 30 | Each | |
| 49 | 49 | S & F in replacement of outdoor type heat shrinkable cable end joint for 3 core, up to 120 Sqmm HT, 11 KV (earth), XLPE insulated heavy duty aluminium conductor cable including making incoming and outgoing electrical connections all as specified and directed. | 8 | Each | |
| 50 | 50 | S & F in replacement of or mounting over four/two pole structure to vertically operated gang operating air break switch (GOD) suitable for 11 KV, 200 Amp consisting of 3 Insulators in each phase (Total 9 insulators in 3 Phase) mounted over the galvanised mild steel channel frame of suitable size, operating mechanism, operating handle made of medium grade galvanised Iron pipe of 25 mm dia, at least 5 mtr long, locking arrangement , connected with 7 leaver Godrez lock, moving and fixed contacts, copper jumphers including making electrical connections of all incoming and outgoing conductors all as specified and as directed by Engineer-in-charge. | 6 | Each | |
| 51 | 51 | S& F including Stretching binding of ACSR conductor on poles to the insulator by means of necessary binding wires 16 SWG aluminium wire complete with necessary jumpers and connections, complete all as specified and directed. | 1 | Per Qtl | |
| 52 | 52 | S&F pin type. Porcelain, vitrous, white, brown or green insulator including one galvanised amild steel spindle, two galvanised iron washers and one galvanised iron nut, 150 mm height, 150mm dia for 11000 volts grade all as specified and directed. | 45 | Each | |
| 53 | 53 | S&F Disc type, porcelain, vitreous, white, brown or green insulator including galvanised mild steel straps, washers, insulator bolts, washers and nuts as under Working pressure 11000 volts,150 mm height, 255 mm dia ball and socket type two in series assembly for tension with tension clamps for conductors all as specified and directed. | 50 | Each | |
| 54 | 54 | S&F danger boards notice plate of 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colur and fixed with M.S clamps, bolts and nuts of approved size, for HT 25 X20 cm size all as specified and directed. | 6 | Each | |
| 55 | 55 | M & L for making Platform for Transformer using Block masenery & PCC (1:3:6) including finishing of surface. Size / strength of Platform as per Transformer capacity minimum hieght of the platform from ground one meter all as specified and directed by Engr-In-Charge. | 1 | Each Job | |
| 56 | 56 | S&F cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding , bending cold or hot, drilling holes for bolts, in any shape or size as indicated aor directed and inclusive of one primer coat, one under coat and finishing coat of paint all as specified and directed. | 2 | Per Qtl | |
| 57 | 57 | M& L for graded coarse aggregate of nominal size 40mm spread over inside the sub stn area as per site requirement and all as directed by Engr-in-Charge. | 10 | CUM | |
| 58 | 58 | M&L for earthing complete with copper earth plate electrode of size 60cmx60cm x 3.15 mm thick buried directly in ground vertically to depth not less than 2.25 mtr below ground level with top edge of earth plate at a depth not less than 1.5 mtr below normal ground level connected to and including copper strip of 20 x 3 mm as earth lead up to 7.5 mtr long fixed by means of bolts, nuts, check nuts and washers etc. of galvanised iron or steel including provn of HDPE protection pipe light grade of 32/40mm bore and connected to earth strip earthing test point all as shown in electrical plate No.5 of SSR Part-I 2009 and as specified or indicated and testing on completion including necessary excavation & earthwork in any type of soil, PCC (1:3:6) type C1 chamber, precast slab 50mm thick in cement concrete (1:2:4)type B1 (reinforced with welded steel wire fabric (XPM) of weight not less than 4kg/sqm) with frame, funnel with watering pipe of 15mm bore Sch.40, wire mesh and lugs, test point etc. complete all as specified and directed.Note: G I strip exceeding 7.5m long shall be measured & paid seperately. | 10 | Each | |
| 59 | 59 | S&F copper strip 20 x 3 mm with saddles and fixing screws etc for jointing with transformer and lightening arresters with the earth pit strip etc all as specified and directed by engineer-in-charge. | 60 | RM | |
| 60 | 60 | S&F in replacement of drop out fuse assembly consisting of two post insulators with jaws mounted over suitable size of mild steel channel for each phase (Total 06 insulators mounted over three channels for three phase) including making electrical connections of all incoming and outgoing conductors all as specified and directed by Engineer-in-charge. | 5 | Each | |
| 61 | 61 | S&F TNC Switch for operation of VCB as per sample all as specified and directed by Engineer- in - charge. | 16 | Each | |
| 62 | 62 | M&L for complete cleaning of the internal & external parts of HT panel; checking & testing of all the components of the panel for cable insulation, lugs, connections and the like; replacement of & including provision of minor parts like lugs, insulation tape, nuts bolts, connectors and the like as directed by Engineer-in-Charge; replacement and / or welding of existing damaged hinges of the panel; preparation of old painted surfaces (internal & external) of the panel, complete removal of existing paint using emry paper grade 220, by sanding and scrubbing, application of corrosion resistant primer by sprayers, applying hammer finish metal paint using sprayers in two coats and till shining surfaces are obtained; application of two coats of epoxy black paint on panel frames, with locking arrangement including lock complete all as specified and directed by Engineer-in-Charge. | 8 | Each Job |
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