Repair/Maint of servo voltage stabilizer, VCB and allied works for external electric supply at AF Stn Najafgarh under GE (AF) Tughlakabad

Amount

Taking down the existing old LT panel board/ LT feeder pillar box comprising of MCCB & switch fuse unit of any capacity and size including aluminium bus bar, ammeters, voltmeters etc after disconnecting all cable connections and removing from site complete all as specified and directed by Engr-in-charge.

Supply, fabrication, installation & commissioning of dust & vermin proof totally enclosed, outdoor type LT, 3 phase 4 wire feeder pillar box factory made (CPRI approved), double door cubical type of suitable size made by 3.15mm thick ms sheet with MS angle iron frame of size 40 x 40 x 6mm slanting roof, front door opening with locking arrangement complete painted with two coats of synthetic enamel paint over a coat of red oxide primer including necessary PCC, fixing with PCC 1:2:4 of size 0.2mx0.2mx0.2m for 4 Nos legs, inclusive of under mentioned items fixed inside with suitable arrangement vertically operated and internal connection with PVC insulated stranded single core copper cable of suitable size or using insulated copper strip of appropriate size and connection of all incoming and outgoing ...

Taking out the Air Circuit Breaker LT 415 volts up to 800 amps from existing position, dismantling the same, overhauling/ maintenance/repair the same including replacement of minor spares, assembling the same to the existing position, adjustment of load and testing complete all as specified and directed by Engr-in-charge.

S&F cable jointing kit and testing for 11 KV grade cable for outdoor termination, heat shrink type joint with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 Sqmm to185 sqmm complete all as specified and directed by Engr-in-charge. Make : Cat No MHOx11KV E 3C of 3M/Cat No EPKT3362 of Rychem/or equivalent of Denson

Ditto- All as per item No 4 but indoor type. Make : Cat No MHIx11KV E 3C of 3M/Cat No EPKT3111 of Rychem/or equivalent of Denson

Ditto- All as per item No 4 but straight through. Make : Cat No MHSx11KV E 3C of 3M/Cat No EPKJ3252 of Rychem/or equivalent of Denson

Dismantling of mechanism system of defective 11 KV VCBs, repair/replace the unserviceable items such as closing/tripping coil, vacuum interrupter tube, moving contact and spring charging motor etc including overhauling the same by the service engineer after necessary cleaning with CTC, and providing silicon grease to the all moving parts including adjustment of all springs etc and made 100% serviceability and testing complete. Note:- closing/tripping coil, vacuum inter rupture tube, moving contact and spring charging motor shall be measured and paid separately.

Supply only closing/tripping coil suitable for 11 KV VCB’s complete all as specified and directed by Engr-in-charge. Make as per of existing VCB

Supply only spring charging motor of 230 volts 0.25 HP, 8000 RPM suitable for 11 KV VCB's complete all as specified and directed by Engr-in-charge. Make as per f existing VCB

Supply only vacuum interrupter tube suitable for 11 KV VCB’s complete all as specified and directed by Engr-in-charge. Make as per of existing VCB

Supply only moving contact top/bottom suitable for 11 KV VCB’s complete all as specified and directed by Engr-in-charge. Make as per of existing VCB

M&L for insulating materials for applying 11 KV busbar insulators, CT’s & PT's for better insulation resistance of the system after necessary cleaning with Carbon Tetra chloride chemical complete all as specified and directed by Engr-in-charge.

Taking out of defective /unserviceable /obsolete model indicator lamp from 11 KV VCB's, supply and fix indicator lamp LED type of different colour of existing, 60 mm dia 30 volts complete all as specified and directed by Engr-in-charge.

M&L for Spray painting outside for 11 KV VCB's panel/bus coupler with one coat of synthetic enamel paint 1st grade (moisture proof) after preparation/ cleaning of the old steel surfaces complete all as specified and directed by Engr-in-charge.

S&F busbar insulators suitable for 11 KV VCB's complete all as specified and directed by Engr-in-charge. Make as per of existing VCB

Taking out of old unserviceable/defective/old vintage/ obsolete model of relays from 11 KV VCB's and S&F over current and earth fault electronic relay suitable for 11 KV, VCB including necessary addition/ alternation of VCB front panel including cutting/welding of front side of panel board to match & fixed the new relays to the existing panel board/position including necessary touch up to the panel board, testing of over load and earth fault protection complete all as specified and directed by Engr-in-charge. Make as per of existing 11 KV VCB

Calibration, injecting and testing in artificial way for over load and earth fault IDMT relay at 11 kv switch gear complete all as specified and directed by Engr-in-charge.

S&F HT volt meter (0-15 KV) digital squire flush types of size 96x96 mm complete all as specified and directed by Engr-in-charge. Make: L&T/AE/Rishab/Kaycee

Supply and installation of 11 KV single phase in door resin cast PT of ratio 11 KV/rt3/110v/rt3, class 0.5-3, burden 50 VA-50VA complete all as specified and directed by Engr-in-charge. Make as per of existing 11 KV VCB

S&F DC power pack 230 VCA +- 10%, 50Hz 24 V DC/26AHDC complete all as specified and directed by Engr-in-charge. Make as per of existing VCB

Supply and installation of 11 KV single phase in door resin cast CT of ratio 50/25/5 amps (dual core - one for metering and other for protection) having 16 VA burdon and class 5P-10 protection complete all as specified and directed by Engr-in-charge. Make as per of existing VCB

S&F aluminium socket and lugs after disconnecting from panel and taking down burnt cable from panel of different location and cutting out the burnt portion of cable and extended the cable from cable loop including excavation, filling of soil, preparation of cable including necessary connection and testing complete of following sizes:- Make of lugs- Dowells/Jainson

10 Sqmm 2/4 core 1100 volt grade

16 Sqmm 2/4 core 1100 volt grade

25 Sqmm 3.5 core 1100 volt grade

50 Sqmm 3.5 core 1100 volt grade

95 Sqmm 3.5 core 1100 volt grade

120 Sqmm 3.5 core 1100 volt grade

240 Sqmm 3.5 core 1100 volt grade Note for sch item Nos 23.10 to 23.70: Excavation and earth work if any required shall be measured and paid separately under relevant items.

Taking out the unserviceable MCCB’s of any type any capacity by disconnecting all electrical connections from Panel board/wall /FPB and S&F the folowing MCCB's with necessary fixing arrangment, connecting and testing complete all as directed at site for the following sizes:-

100 Amps 3 Pole breaking capacity 16 KA. Make: Cat No 420005 of Legrand/ Cat No HDA100Z of Hager/Cat No 1SDA066807R1 of ABB

160 Amps 4 Pole breaking capacity 36 KA. Make: Cat No 420097 of Legrand/ Cat No HDA161Z of Hager/Cat No Cat No 1SDA067410R1 of ABB

250 Amps 4 Pole breaking capacity 36 KA Make: Cat No 420249 of Legrand/ Cat No HNB251U of Hager/Cat NoCat No 1SDA068070R1 of ABB

400 Amps 4 Pole breaking capacity 36 KA. Make: Cat No 422007 of Legrand/ Cat No HND401U of Hager/Cat NoCat No 1SDA054478R1 of ABB

630 Amps 4 Pole breaking capacity 50 KA. Make: Cat No 422023 of Legrand/ Cat No 1SDA060211R1/or equivalent of Hager

Opening the upper cover of voltage stabilizer motor operated of capacity 400 KVA after disconnection of electric connection and taking out of electronic circuit card (PCB), trigger transformer 9 and 18 Volts disconnection and fixing new PCB card, contactor and trigger transformer 9 and 18 Volt complete including reconnection and assemble the same after repair and testing complete all as specified and directed by Engr-in-Charge.

Dismantling of defective GOD switch 200/400 amps capacity and repairs to the same including replacement of Male & Female metal contact, arcing horn and all rusted GI nuts, bolts & washers including proper connection of ACSR conductor/cables and necessary greasing etc to make 100% serviceability and proper functioning of GOD switch complete all as specified and directed.

S&F danger notice plate of 1.6 mm thick mild steel sheet, vitreous enameled white, with letters, figures and conventional skull and bones in signal red colour and fixed with MS clamp, bolts and nuts of size, for HT, 25x20 cement mortar complete all as directed and specified by the Engr-in-Charge

Taking out old unserviceable underground cable of sizes 120 Sqmm 3 core from excavated trenches/pipes/pole complete all as specified and directed by Engr-in-Charge. Note: Necessary earth work if any required shall be measured and paid separately.

Supply and laying cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured electric power cable (heavy duty) with aluminium conductor, 11000 Volts, grade cross sectional area 120 Sqmm 3 core complete all as specified and directed by Engr-in-Charge.

Excavation in trenches in soft/loose soil, not exceeding 1.5 mtr wide and not exceeding 1.5 mtr deep and getting out in soft/loose soil for laying of cable/foundation of pole and stay etc in complete all as specified and directed by Engr-in-charge.

M&L for sand cushioning in trenches for protection of LT underground cable including watering and consolidation as per SSR Part-I complete all as specified and directed by Engr-in-charge. Note: Punned thickness shall be measured for payment purpose.

Supply and laying well burnt sub class ‘B’ bricks, locally available of size 23x11.5x7.5 CM in trenches for protection of the underground cable complete all as specified and directed by Engr-in-charge.

Removing the excavated materials not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 mtr above ground level from starting point complete all as specified and directed by Engr-in-charge.

Returning, filling in including spreading, levelling, watering and well ramming in layers not exceeding 25 cm complete all as specified and directed by Engr-in-charge.

M&L complete for drilling hole under hard standing /road for laying of pipe for protection of cable etc by manual booklet without disturbing the top surface and making good the disturbed surface if any complete all as specified.

Supply and laying GI pipe medium grade 80 mm bore complete all as specified and directed by Engr-in-charge.

M&L for earthing complete with copper earth plate 600x600x3.15 mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below ground level) with top edge of the plate not less than 1.5 mtr below normal ground level, connected to copper strip of size 25x3.15 mm by means of bolts, nuts check, nuts and washers including charcoal dust common salt including necessary excavation in soft loose soil returning filling in and removal of surplus soil to a distance up to 50 m, PCC pit in cement concrete 1:3:6 type C1 by using 20mm grade stone aggregate, precast RCC cover shall be provided in RCC 1:2:4 type B-1 by using 20mm grade stone aggregate, 40mm thick pit cover reinforced with 8mm dia.... Contd....

Contd sl item No 37.00: ...TMT bars 75mm c/c both ways, MS handle 12mm dia, PGI funnel wire mesh and GI watering pipe of 20mm bore (light grade) and earth lead protection pipe 40mm bore (light grade) GI pipe for earth lead protection, including earth work complete, all as per Electrical Plate No 3 of SSR Part-I, complete all as specified and directed by Engr-in-Charge. Note:- Copper strip and protection pipe of 40 mm dia upto 7.5 meter length are deemed to be included in the quoted rate.

Note: The amount of Rs 32,070.00 against schedule of credit given on Tender Serial Page No 33 shall be deducted from the total amount quoted by the contractor against BOQ while deriving the contract sum for acceptance.

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