REPAIR MAINT OF LIGHTENING CONDUCTOR, DISTRIBUTION BOXES WITH MCCB, LED DISPLAY, FLOOD SECURITY LIGHTS AND OTHER LUMANARIES ALONGWITH SERVICE CABLE ETC AT SHALATENG GARRISON UNDER AGE I CIF K AND REPAIR AND MAINT OF HT AVR AND VCBs AND CONNECTED WKS

Amount

Taking down carefully copper/aluminium point wiring (light, fan, light & power socket) complete including fittings such as switches, sockets, bell pushes, ceiling roses, pendants/batten holder, call bell, fan, regulators, tube light fittings, bulk head etc. also making good the disturbed surface of wall/floor/ceiling and also making good the disturbed surface of wall, floors etc complete all as directed by Engineer-in-Charge. Note: Fan shall be taken down and refixing will be measured and paid for separately.

Point wiring using FRLS PVC insulated unsheathed /multi stranded copper conductor cable 1.5 sqmm including 1.5 Sqmm FRLS PVC insulated unsheathed copper conductor earth wire drawn through and including concealed PVC conduit of appropriate size not less than 20 mm dia and 1.8 mm thick including all fittings viz tees, bend, junction box and pressed steel sunken box 60 mm deep & 1.6 mm thick duly painted inside and anticorrosive out side for mounting switches, sockets, fan regulators etc with 3mm thick plastic laminated sheet cover of suitable size, connecting earth including cutting groove for concealed wiring, making good to disturb surface of wall/floor with cement mortar and finishes to match existing including connection of cable with MCBs or bus bar shall be done through proper size copper/brass thimble of pin/u type etc (conduit shall be fixed on surface of ceiling with necessary saddles where concealing of conduit is not feasible), for light/fan/bell point etc complete all as specified and directed.(Note : Switch/bell push/fan regulator etc shall be measured and paid separately)

S&F Switch piano, flush type, 5 Amp, One way complete all as specified and directed by Engr-in-Charge.

S&F in replacement Sheet metal enclosure factory made (double door) shutter type for MCB DB TPN, Horizontal type, 4 ways , 440 Volts with 200 Amps rated bus bar, neutral link, earth bar complete all as specified and directed by Engr-in-Charge.

S&F in replacement Sheet metal enclosure factory made (double door) shutter type for MCB DB SPN 12 ways , 240 Volts with 200 Amps rated bus bar, neutral link, earth bar complete all as specified and directed by Engr-in-Charge.

S&F in replacement Sheet metal enclosure factory made (double door) shutter type for MCB DB SPN 8 ways, 240 Volts with 200 Amps rated bus bar, neutral link, earth bar complete all as specified and directed by Engr-in-Charge.

S &F in replacement MCB SPN 40 to 63 Amp, 10 KA, 240 Volts

S &F in replacement MCB SP 5 to 32 Amp, 10 KA, 240 Volts

S& F in replacement edgepro Square slim-fit low profile downlights are engineered to deliver superior light output and uniformity utilizing the latest edge-lit LED technology. An ideal solution where ceiling voids are limited but high lumen output 12W LED, complete all as specified and directed.

S&F 42 Watt LED light fittings 2ft x 2ft ultra modern designed architectural LED luminaire which provides soft-light and glare free symmetrical illumination suitable for armstrong/ grid ceiling mounting ceiling light fittings flush to ceiling complete all as directed including taking down old unserviceable of any type , complete all as specified and directed.

S&F in replacement LED light fitting energy saving, environment friendly & robost open highbay led luminaire with high efficacy suitable for ceiling (surface/ suspended) 150 watt complete all as specified and directed.

S&F LED light fitting energy saving, environment friendly & robost highbay/ mediumbay LED IP65 luminaries with high efficiency. 150 watt complete all as specified and directed.

M&L in replacement Sub main wiring of two single core PVC insulated and unsheathed cable with 6 sqmm FLRS multi-stranded copper conductor drawing in PVC casing caping as per site requirement including PVC bend, corner junction etc with 6 sqmm PVC unsheathed copper conductor (multi-standard) as continuous earth wire, complete all as specified and directed.

M&L in repair fixing Air termination lightening conductor single pointed copper rod 12mm dia and 300mm long fixed properly on top of the Hangers/ ATC building complete all as specified and directed by Engr-in-Charge.

M&L in repair making of test point terminal clock made out of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 Nos 8mm dia 25mm long hexa head screw compete all as specified.

M&L in repair fixing of copper strip of size 20mm x 3.15mm thick with and including saddles and fixing screws etc for roof conductor or down conductor above ground complete all as specified and directed by Engr-in-Charge.

S&F in repair earthing complete with copper earth plate 60 cmx 60 cmx 3.15 mm thick electrode burried directly in ground (earth pit not less than 2.25 mtr deep below GL) with top edge of the plate not less than 1.5M below normal GL connected to copper strip 20 x 3 mm as earthing strip lead by means of nut, bolts and check nut and washer, GI light grade protection pipe 25 mm dia. upto 7.5 m,GI watering pipe 20 mm dia,RCC cover with funnel, excavation in any type of soil, PCC pit charcoal ,salt all as shown in electrical plate No 5 of SSR Part I, including earth test point up to pannel board, all as specified or indicated including testing on completion.

Supply, fixing & laying GI pipe light grade 40 mm bore in trench, under floor, wall and on pole for cable protection in dismanteling old u/s GI pipe.

Taking out the existing HT AVR unit 11000 volts grade of carefully by dismantling all incoming & outgoing elect / mechanical connections lifting and transport to reputed work shop by means of using suitable tools & plants, opening the body of buck booster/AVR units find out the defects and Servicing, repair/removing incl replacing the defective spare parts and re-assembling complete all as specified and as directed. ( De-hydration of oil / new winding will be measured and paid under relavent item of this schedule ) The job involves the following :- (a) Dismantling & taking down carefully from plant room by disconnecting all electrical / mechanical connection from HT and LT side including transporting to work shop.

(b) Opening the body of the AVR/buck booster units complete, drain out the oil, lift the cover and coil assembly, checking the serviceability state of spares such as moving carbon roller, windings, insulating oil, LT/HT elect connections, HT/LT bushings, HT/LT brass terminals, Tig & Tag connectors, chain rack, limit switch, bearings, couplings, motor, Micro processor based PCB card, CT/PT assy, Aux / Reversible contactors, Winding/Oil temp/Buchloz relays assy, earthing connections, copper strip, etc. and repair / replace the same of existing model/make and making fully serviceable state of AVR/Buck booster assy at site incl testing as per OEM specifications complete all as directed. (c) Cleaning the core laminations assembly by oil complete, removing the carbon sediments / dust in the coil and core gently without making any damage to coil and core. (d) Re-assembling all dismantled parts including provision of new gasket, nut, bolts, refilling with transformer oil and transporting back to original location including electric/mechanical connection testing and commissioning complete.

Supply and fixing in repairs moving carbon rollers of existing size and make suitable for 600 KVA AVR Unit

Supply and fixing in repairs Tie & Tac brass connector suitable for 600 KVA AVR Unit

Supply and fixing in repairs Chain rack (double) incl bearing

Supply and fixing in repairs Limit switch suitable for 600 KVA AVR Unit

Supply and fixing in repairs SS coupling suitable for 600 KVA AVR Unit

Supply and fixing in repairs Chain assy suitable for 600 KVA AVR Unit

Supply and fixing in repairs Synchronous motor suitable for 600 KVA AVR Unit

Supply and fixing in repairs PCB card suitable for 600 KVA AVR Unit

Supply and fixing in repairs PT unit 11000/110 volts suitable for 600 KVA buck booster Unit

Supply and fixing in repairs Reversible Contactor 3 pole suitable for 600 KVA AVR Unit

Supply and fixing Winding temperature relay complete suitable for 600 KVA AVR Unit

Supply and fixing in repairs Oil temperature relay complete suitable for 600 KVA AVR Unit

Supply and fixing in repairs Buchloz relay assy complete suitable for 600 KVA AVR Unit/Transformer

Supply and fixing in repairs Copper strip of any size suitable for 600 KVA AVR Unit

Supply and fixing in repairs Connector Strip 16 way / 24 way suitable for 600 KVA AVR Unit

Supply and fixing in repairs Aux contactor suitable for 600 KVA AVR Unit Note : Contractor shall procure the material for item 21 to 36 from authorised out of manufacturing of existing AVR as approved by GE.

Supply and filling of fresh transformer power oil of BDV not less than 50 KV for topping up of reduced level of transformer due to evaporation/ leakage/losses due to dehydration in HT 11 KV AVR /Distribution transformer 100 to 600 KVA or for replacement complete including removing of old unservicable transformer oil all as specified and directed. Note : Necessary documents should be submitted by the contractor to Engr In Charge.

M & L for conducting oil filtration by stream line / Vacuum type filter machine to remove the moisture/carbon particles to improve required BDV of oil 50 to 60 KV for 1 min for power transformer & as BDV of oil 40 to 50 KV for 1 min for distribution transformer incl routine testing after filtration for any capacity of transformers/AVR/CT/PT units all as directed. (Note : The contractor shall change the filter assy before starting the filtration of transformer / AVR of capacity 600 KVA and more capacities in presence of Engr In charge) Note : Necessary documents should be submitted by the contractor to Engr In Chrge.

Supply and replacing silica gel breather clear view type including first fill of good quality silica gel of capacity suitable for 600 KVA AVR units.

M&L for Earthing complete with GI earth plate 60x60cmx6mm thick electrode and 32x6mm GI strip as earthing lead burried directly in ground (Earth pit not less then 2.25 metres deep below ground level) with top edge of the plate not less then 1.5 metre below normal ground level, conneceted to GI strip 32x6mm as earth lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No.5 and incl earth work, PCC pit and RCC cover, watering pipe 20mm dia light grade, funnel, wire mesh, charcoal dust, 40mm dia light grade protection pipe and salt etc and connected to earthing test point all as specified or directed and testing complete all as specified.

M&L for super enamelled copper conductor wire of suitable gauge and size as per requirement for rewinding the HT/LT transformer / HT AVR of any capacity / any make complete all as directed.

M&L for servicing of HT 11KV, VCB installed at various locations including calibration by dismantling, cleaning, greasing the complete VCB with attached relays, bus bar etc. insulation testing, setting the contractor gap by measuring as required, reassembling the VCB and reinstalling back to its original position checking repairing the current, circuit panel wiring, relay testing (i.e. Primary and Secondary injection test)/ setting of relay rating in 06 months intervals of all CT's and submitting the test report to Engr-in-Charge including provision of new spares as required complete including operational testing and commissioning all as directed. Note :- (a) New spares, if required for repair/ service of VCBs will be measured and paid separately. (b) Caliberation of relays and primary and secondary injuction test shall be conducted by authorises company/ manufactures. Certificate of authority shall be produced by the OEM authorised company.

M & L for carrying out primary & secondary injection test of 11 KV indoor /outdoor type current transformer (Set of three) of VCB's by using standard injection test method and checking the electrical circuits for fault condition, all relay testing and proper functioning incl submitting the test report all as directed by Engr in charge. (Note : PIT/SIT for VCB will be carried out in 6 months intervals and each primary & secondary injection test will be measured and paid)

Supply and fixing in repairs the following spares for indoor VCB 11 KV 630 A.

i) Closing coil 24/30V DC

ii) Tripping coil 24/30V DC

iii) Antipumping device 24/30V DC

iv) 11 KV porcelain bushing for VCB Top

v) 11 KV porcelain bushing for VCB bottom

vi) Connector strip 16 way

vii) Earth Fault and over current relay

viii) Digital type power factor indicator meter

ix) Digital type Voltmeter / Ammeter 96 x 96 mm size

x) LED type indicator lamp assembly

xi) Vacuum Interrupter for indoor VCB

xii) spout incoming side

xiii) spout outgoing side

xiv) Epoxy insulators bushings for incoming / out going cables / bus bar suppors as per existng size of VCBs

xv) Insulated Copper bus bar of existing size and thickness for VCBs

xvi) Gear system assy complete with handle for charging / discharging of VCBs

xvii) Spring charging motor for VCBs

Dismantling old and burnt out PT unit 11000/110 volts draw out type epoxy resin cast type taking out contact with lead and bushing from the bus bar and PT, replacing by new one of same model suitable for 11 KV VCB incl testing on completion all as directed.

Material and labour for replacement of temperature gauge suitable size for power transformer/AVR of any capacity all as specified and directed by Engr-in-charge.

M & L for PVC sleeves suitable for LT / HT ACSR conductor / jumper in any type in R Y B Colours superior quality inserted over the existing ACSR all as directed.

Taking out the existing HT AVR unit 11000 volts grade 600 kva capacity carefully by dismantling all incoming & outgoing elect / mechanical connections and Dismantling & taking down carefully from plant room by disconnecting all electrical / mechanical connection from HT and LT side including Shifting and transporting from MRS TO SUB STN NO 2 .Fixed and reassambling at ssb station no 2 bldg for instalation any addition /alteration required is to be included in qouated rates and making good ,including electric/mechanical connection testing and commissioning complete.all as spd and as directed.

M/S YATTOO CONTRACTORS

M/s Lal Enterprises