REPAIRS AND MAINTENANCE OF EXTERNAL ELECTRIFICATION, INSTALLATIONS, CABLES AND OTHER CONNECTED ITEMS AT AF STN BARWALA UNDER AGE (I) AF HIGHGROUNDS

Amount

Excavation in trenches in soft/loose soil not exceeding 1.5 metre wide and not exceeding 1.5 metre deep for laying/taking out cables and foundation of poles etc. and getting out, complete all as specified and as directed.

Material and labour for sand cushioning with a layer of dry river sand, 80mm thick before laying of cable and 150mm thick (punned down to 100mm thick) after laying of cables, in trenches/ducts complete all as specified and as directed. Note : Punned down thickness (overall 18cm) shall be considered for measurement and payment.

Supplying and laying factory made unreinforced precast concrete cable cover HV type-1, flat, of size 300mm x180mmx40mm, laid flat and dry in trenches over the cable for protection, length perpendicular to the direction of cable adjacent to each other complete all as specified and as directed.

Supply and laying factory made unreinforced pre-cast concrete cover block LV type-1 flat of size 250x150x40mm laid flat and dry in trenches over the cable for protection as length perpendicular to the direction of cable adjacent to each other complete all as specified and as directed .

Returning, filling in trenches (any type of soil), including spreading, leveling, watering and well ramming in layers not exceeding 25 cm thick each layer complete all as specified and as directed.

Removal of surplus excavated soil to a distance not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point complete all as specified and as directed.

Material and labour for earthing complete with GI earth plate electrode of size 600mm x 600mm x 6mm thick burried directly in ground vertically (depth of pit not less than 2.25 m below normal ground level), with top edge of earth plate not less than 1.5 m below normal ground level, earth plate surrounded from all sides by 15cm thick packed alternate layers of charcoal dust and common salt, electrode connections using galvanized iron strip of size 32mmx6mm thick (upto body of equipment) by means of nuts, bolts, check nuts & GI washers, connected to main switch board or main control board or test point, protected by galvanized iron pipe light grade 40mm dia bore, and watering pipe 20 mm bore GI light grade pipe with funnel & wire mesh, including all necessary excavation & earth work, PCC chamber in PCC (1:2:4) type B-1 & RCC cover, all as shown in electrical plate No 3 of MES Schedule Part-I (2009), testing on completion complete all as specified and as directed. Note(s) :- (i) RCC pit cover shall be pre-cast of RCC (1:2:4) type B-1, 80mm thick reinforced with XPM not less than 4Kg/Sqm. (ii) PCC chamber shall be constructed 500 mm away from the edge of earth pit. (iii) Rate shall include GI strip and protection pipe of length 7.5m, GI pipe beyond 7.5m length required at site shall be measured and paid separately. (iv) Earth resistance should be less than 2 Ohm. In case the test results are not found below 2 Ohm, complete earthing will be redone without any extra cost to Govt.

Material and labour for earthing complete with GI earth plate electrode of size 600mm x 600mm x 6mm thick burried directly in ground vertically (depth of pit not less than 2.25 m below normal ground level), with top edge of earth plate not less than 1.5 m below normal ground level, earth plate surrounded from all sides by 15cm thick packed alternate layers of charcoal dust and common salt, electrode connections using galvanized earth lead wire 4.0 mm dia (upto body of equipment) by means of nuts, bolts, check nuts & GI washers, connected to main switch board or main control board or test point, protected by galvanized iron pipe light grade 15 mm dia bore, watering pipe 20 mm bore GI light grade pipe with funnel & wire mesh, with and including including all necessary excavation & earth work, PCC chamber in PCC (1:2:4) type B-1 & RCC cover all as shown in electrical plate No 3 of MES Schedule Part-I (2009), testing on completion, as in repair/replacement complete all as specified and as directed. Note(s) :- (i) RCC pit cover shall be pre-cast of RCC (1:2:4) type B-1, 80mm thick reinforced with XPM not less than 4Kg/Sqm. (ii) PCC chamber shall be constructed 500 mm away from the edge of earth pit. (iii) Rate shall include GI wire and protection pipe of length 7.5m, GI pipe beyond 7.5m length required at site shall be measured and paid separately. (iv) Earth resistance should be less than 2 Ohm. In case the test results are not found below 2 Ohm, complete earthing will be redone without any extra cost to Govt.

Supply and laying/fixing GI tubing light grade 80mm bore with all fittings for cable protection fixed to pole/wall or laid under floor/road/pavement with nuts, bolts, clamps etc as required including taking out old pipe complete all as specified and as directed.

Disconnecting carefully & taking out defective underground cable any size , any type from trenches, pole, pipe, floor, wall etc including cover bricks complete all as specified and directed.

Supply and laying, jointing and testing XLPE underground cable insulated, overall sheathed with aluminium conductor heavy duty 1100 volts grade 35 sqmm 3.5 core laid in trenches/ on poles/ road crossing or passing through existing/new pipe under road crossing, clamping on wall complete all as specified.

Supply and laying, jointing and testing XLPE underground cable insulated, overall sheathed with aluminium conductor heavy duty 1100 volts grade 50 sqmm 3.5 core laid in trenches/ on poles/ road crossing or passing through existing/new pipe under road crossing, clamping on wall complete all as specified.

Supply and laying, jointing and testing XLPE underground cable insulated, overall sheathed with aluminium conductor heavy duty 1100 volts grade 70 sqmm 3.5 core laid in trenches/ on poles/ road crossing or passing through existing/new pipe under road crossing, clamping on wall complete all as specified.

Supply and laying, jointing and testing XLPE underground cable insulated, overall sheathed with aluminium conductor heavy duty 1100 volts grade 95 sqmm 3.5 core laid in trenches/ on poles/ road crossing or passing through existing/new pipe under road crossing, clamping on wall complete all as specified.

Supply, laying, jointing, testing and commissioning of High Tension (HT), 11000 Volts (earthed) grade, XLPE insulated, screened, PVC bedded, galvanized steel strip armoured, electric power cable (heavy duty) with stranded aluminum conductor, cross sectional area 95 Sqmm, 3core under ground cable including both side connection with cable lugs etc, laid in trenches, along poles or passing through pipes or laid under floor or through walls etc, complete all as specified and as directed. Note for item no. 11 to 15 : Excavation and earth work, sand cushioning and precast concrete cable cover/bricks for protection of cable shall be measured and paid separately.

Material and labour for Cross arms, bracing, supports, clamps and back plates, fabricated from structural steel section Fe-290 grade E-165 quality including nuts, bolts, washers, and welding, bending cold or hot, drilling holes for bolts, in any shape or size with and including applying two coats of alminium paint over a coat of primer as in repair/replacement, complete all as specified and as directed.

Supply and fixing danger notice board/plate for HT 250 x 200 mm size made of 1.6 mm thick mild steel sheet vitreous enamelled white with letters figures and conventional skull and bones in signal red colour and fixed with MS clamps bolts and nuts of suitable size fixed in repair/rewplacement complete all as specified and directed.

M&L for Anti-climbing device, spikes type fabricated out of M.S. bars (round, square and flat) including nuts, bolts, washers and welded in two halves made to shape to suit the cross section of the pole including one coat of red oxide zinc chromate primer and two coats of aluminium paint fixed in repair/replacement complete all as specified and as directed.

Supply and fixing MCCB 63 Amps , 415 Volts rupturing capacity 16/18 KA ,4 POLE, overload adjustable type including connecting complete fixed in repair/replacement all as specified and as directed.

Supply and fixing MCCB 100 Amps , 415 Volts rupturing capacity 16/18KA ,4 POLE, overload adjustable type including connecting complete fixed in repair/replacement all as specified and as directed.

Supply and fixing MCCB 160 Amps , 415 Volts rupturing capacity 25 KA , 4 POLE, overload adjustable type including connecting complete fixed in repair/replacement all as specified and as directed.

Supply and fixing MCCB 250 Amps , 415 Volts rupturing capacity 36KA , 4 POLE, overload adjustable type including connecting complete fixed in repair/replacement all as specified and as directed.

Dismantling and taking down old unsv GOD complete all as specified and directed.

Supply, installing, testing and commissioning of air break gang operated triple switch(GOD) outdoor type vertical mounting type of capacity 200 Amp with drop out fuse consisting 12 insulators ISI marked mechanically operated mounted on insulator and frame work with operating Gl rods and mechanical work from ground level with locking arrangement including Godrej pad lock with two keys complete with fuse carrier and HT fuse element having upto 100 Amp rating suitable for HT 11 KV 50 HZ AC supply including necessary electric connection complete all as specified and directed

Supply & fixing Pin / Post type insulator vitreous white, brown or green 11000 volts grade 150 mm dia and 150mm height including one galvanized mild steel spindle with two GI washers and one galvanized nut , bolt incl dismantling and taking down old insulator complete all as directed.

Material and labour for straight through joint heat shrinkable 11 KV earthed system suitable for XLPE cable of size 3 x 95 Sqmm incl taking down old unsv HT joint complete all as specified and as directed.

Supply, jointing & testing end termination joint kit (heat shrinkable) ,indoor type complete with jointing material and accessories suitable for 3 wire, 11KV (Earthed) grade, HT, underground XLPE insulated armoured aluminium conductor 3 core 95 Sqmm size cable including taking out old jointing kit and removal complete all as specified and as directed.

Supply, jointing & testing end termination joint kit (heat shrinkable),outdoor type complete with jointing material and accessories suitable for 3 wire 11KV (Earthed) grade HT, underground XLPE insulated armoured aluminium conductor 3 core 95 Sqmm size cable including taking out old jointing kit complete all as specified and as directed.

Relaying old serviceable bricks as in trenches, laid over the cable for protection, length perpendicular to the direction of cable adjacent to each other complete all as specified and as directed. Note - Old serviceable bricks retrieved against Item No 10 here in before shall be reused after proper cleaning and cost of cleaning is deemed included in the unit rata quoted.

Disconnecting and taking out faulty underground HT/LT cable of any sizes by excavation and removing DWC pipe/cover bricks of any size and relaying/ re-routing the cable after rectification of fault or replacing faulty length/piece of cable with new cable and laid ion same trench ,testing the cable for workability complete including removing of surplus soil complete all as specified and as directed. Note: (a) Excavation and earth work, sand cushioning if provided shall be measured and paid separately. (b) HT/LT cable & joints shall be measured and paid for seperately . (c) Retrieved old serviceable bricks/DWC pipe will be relaid in trenches for cable protection and labour element for cleaning is deemed included in the unit rate quoted.

Material and labour for Horizontal Boring of Holes under road, Pavement, hard standing by trenchless technology using ultra sounding techique and necessary machine with and including provision of HDPE pipe of size 150 mm dia suitable for 0.4 mpa working pressure complete all as specified and as directed.

Supply , laying , jointing HDPE (DWC) tubing outer dia not less than 90 mm fixing on poles, walls , laid under floors, outer surfaces including all fittings such as bends, joints as required to make it seamless including clamps, nut-bolts washers fixed in repair/replacement complete all as specified and as directed.

S&F LT Busbar Chamber of size not less than 400x400x300mm with set of 04 aluminium 200 Amps rated bus bar each fixed on suitable insulators with suitable size of brass nut, bolts and washer with heat shrinkable PVC sleeving. The bar shall be colour coded (red, yellow and blue) for three phases and black for neutral. Bus bar chamber will be fixed on 04 nos of les made with MS Angle. Length of each leg will be not less than 0.6m. The Chamber shall be fixed more than 30 cm above the normal ground level complete with PCC foundation (1:2:4 ) type B2 complete all as specified and directed by Engr in charge.

Supply and fixing changeover switches 4 pole 200 Amps , 415 volts in sheet metal enclosure incl fixing on wall , LT pane , any other surface using nut, bolts , washer,anchor fastners , dismantling and taking down old unserviceable switch/MCB/MCCB/DB as on site any type any size complete all as specified and directed.

M & L for Calibration/setting of protection devices, relays fixed in HT/LT/VCB/RMU panels with all protection function (over current, earth fault protection), tripping test of overcurrent and earth fault relay through primary and secondary injection machine, testing of Auxiliary relay, tripping test through all respected relays complete all as specified and directed. Note:- The Contractor will provide test report of calibration of relay and the cost is deemed to be included in the unit rate quoted.

M&L for servicing of HT Vacuum Circuit breaker and HT Panel and RMU after taking proper shut down and disconnecting all elctric supply , maintaince , cleaning,servicing and testing of HT breaker , bus bar, CTs, PTs, IR value, control cables connections, meters connection, tightening and checking of AC and DC supply, testing of CT and PT with primary and secondary injection kit , tightening and checking of control wires and allied works , removing moisture and dust from HT breaker inside of HT breaker through CRC using dry clothes , testing of leakage with the help of Hi-Pot testing machine , testing of IR value of breaker, testing and checking of operating mechanism, testing of opening release and shunt closing , lubricating all moving parts,testing and operation of On/Off through TNC switch and push button ,checking of anti-pump device, reapir of racking mechanism, earth alignment,tightening of loose connection and allied work at 11 KV substations complete all as specified and as directed. Notes:- Spare/Parts and anti track coating spray except consumables and minor spares will be measured and paid separetly under respective items.

Supply only HT bus bar/breaker insulator for HT panel suitable for existing Crompton greaves/Kirloskar VCB 11 KV Panel at 11 KV substations complete all as specified and directed.

Supply only Vacuum interruptor (Vacuum Bottle) suitable for existing Crompton greaves/Kirloskar VCB 11 KV Panel at 11 KV substations complete all as specified and directed.

Supply only Strip heaters 80-100 watt , AC 240 volts for existing HT/LT panels at 11 KV substations complete all as specified and directed.

Supply only TNC switch suitable for existing Crompton greaves/Kirloskar VCB 11 KV Panel at 11 KV substations complete all as specified and directed

Supply only digital ammeter for VCB panels complete all as specified and directed.

Supply only digital volt meter for VCB Panel and LT panel complete all as specified and directed.

Supply only shunt closing coil 24 V /110 V DC /AC suitable for existing Crompton greaves/Kirloskar VCB 11 KV Panel at 11 KV substations complete all as specified and directed.

Supply only Geared motor (Spring charging) 220-250 V AC/DC with complete accessories suitable for existing Crompton greaves/Kirloskar VCB 11 KV Panel at 11 KV substations complete all as specified and directed.

Supply only tripping coil 24 V / 110 Volt DC/AC suitable for existing Crompton greaves/Kirloskar VCB 11 KV Panel at 11 KV substations complete all as specified and directed. .

Material and labour for complete internal wiring of HT Vacuum Circuit breaker and HT Panel after taking proper shut down and disconnecting all elctric supply to make VCB fuly functional complete all as specified and directed.

S&F Current transformer of ratio 30-15 /5-5A, Burden 15 VA, Indoor epoxy cast type, line voltage 11 KV, class 1.0/5P10, 50 Hz, size and model suitable for CTs suitable for existing Crompton greaves/Kirloskar VCB 11 KV Panel at 11 KV substations fixed in reapir/replacement complete all as specified and directed.

S&F Potential transformer (draw out type) of ratio 11KV/110 V, Burden 3- Phase, rated voltage 11000 V, Insulation level, 28/75KV(P) class 1.0, 50 Hz, connection Star , size and model suitable as per existing PTs suitable for existing Crompton greaves/Kirloskar VCB 11 KV Panel at 11 KV substations fixed in reapir/replacement complete all as specified and directed.

M&L for detecting fault in HT/LT underground cable with fault locator equipment to locate the fault in HT cable of any length , any size complete all as directed . Note :- (a) The fault detected through cable fault locater will only be paid under this item. (b) The cost of arranging cable fault locator and DG set including transportation charges is deemed to be included in the quoted unit rate. (c) Fault locator will be provided by the contractor for even single fault and no dealy on this account will be acceptable. Penality of Rs 1000/- per day will be levied if fault is not located/detected with in 24 hours of intimation .

Disconnecting HT/LT cable and earthing connections of unserviceable transformer of capacity upto 100 KVA, 11 KV/433 Volts 3 phase , Pole/floor mounted, transporting from site of installation carefully with crane to workshop dismantling complete and taking out the core assembly , draining transformer oil, removing unserviceable parts, refilling oil, ovening of reassembling of winding assembly at factory/workshop , carrying out routine tests, and transportation back at site after repair installation to same or other location and making it fully functional complete all as specified and asdirected. Note:-Spare/Parts except consumables and minor spares will be measured and paid separetly as supply only under respective items and cost of fixing of these spares, cost of minor spares , consumables is deemed included in the unit rate quoted.

Material and labour for rewinding of burnt/defective coils of Servo stabilizer/transformer upto 100 kVA capacity using Copper dpc covered winding strip as per original gauge/ data for copper wound transformer complete all as specfied and as directed.

Supply only non-metal part HV bushing including insulators complete with packing for outdoor/indoor/canopy type distribution transformer of capacity upto 100 KVA complete all as specified and as directed by Engineer-in-Charge.

Supply only HT brass bush rod of suitable size for outdoor/indoor/canopy type distribution transformer (11 /0.433 kV) of capacity upto 100 KVA complete all as specified and as directed .

Supply only non-metal part LV bushing including insulators with packing for outdoor/indoor/canopy type distribution transformer or servo stablizer of capacity upto 100 KVA complete all as specified and as directed.

Supply only LT bush rod made of brass of suitable size for outdoor/indoor/canopy type distribution transformer or servo stablizer of capacity upto 100 KVA complete all as specified and as directed.

Supply only Tap changer of suitable size for outdoor/indoor/canopy type distribution transformer (11 /0.433 kV) of capacity upto 100 KVA complete all as directed .

Supply only temperature gauge asssembly suitable for outdoor/indoor/canopy type distribution transformer (11 /0.433 kV) of capacity upto 100 KVA complete all as directed.

Supply only top cover gasket of suitable size for outdoor/indoor/canopy type transformer or servo stablizer of capacity upto 100 KVA complete all as specified and as directed by Engr-in-Charge.

Material and Labour for preparation of old painted surfaces of transformer of capacity up to 100 KVA by scrapping , removing of existing paint completely and applying two coats of synthetic enamel paint grey (or tint as directed by Engr-in-Charge ) with spray painting to achive smooth finish including writing machine no with different colour on surfaces of transformer complete all as specified and as directed.

Supply and pouring new transformer oil as per IS : 335 (1993) for transformers/servo stablizer installed at various locations for topping up after dehydration to achieve the di electric strength 60 KV at 2.5 mm gap complete all as specified and as directed. Note : Transformer oil shall be brought at site in sealed container from the original manufacturer and shall be opened in front of Engr-in-charge. The container will be deposited by the contractor with the deptt and the empty containers will be returned after completion of conract.

M & L for heating, filtration and dehydration of transformer/servo transformer oil with dehydration/ filtration plant to achieve dielectric strength of 40 KV at 2.5 mm gap, complete all as specified and as directed . Note:- Any damage caused to transformer during the process of dehydration shall be made good by the contractor at his own expenses to the entire satisfaction of the Engr-in-charge.

S & F breather transparent type suitable for step down distribution transformers of capacity upto 200 KVA fixed in repair /replacement complete all as specified and as directed

Supply and fixing Racking mechanism suitable for outdoor/indoor/canopy type transformer or servo stablizer of capacity upto 100 KVA fixed in reapir/replacement complete all as specified and as directed.

Supply and fixing Operating mechanism suitable for outdoor/indoor/canopy type transformer or servo stablizer of capacity upto 100 KVA fixed in reapir/replacement complete all as specified and as directed.

Supply and fixing combined over current and earth fault numerical relay with input current 1A/5A and auxiliary voltage 24 V , installation in 11 KV VCB panel, cutting , welding, drilling or any other suitable means , using metal palets in same compartment or seprate cabinet with and including suitable size , wire , connections and testing at 11 KV sub stations as per OEM instructions , testing for full functionabilty complete all as specified and directed .Model CG14N of CG or equivalent of ABB / Siemens.

Supply and fixing Master tripping relay of auxillery voltage 24 V/110V AC/DC installation in 11 KV VCB panel, cutting , welding, drilling or any other suitable means , using metal palets in same compartment or seprate cabinet with and including suitable size , wire , connections and testing at 11 KV sub stations as per OEM instructions , testing for full functionabilty complete all as specified and directed . Make: Cromptomn Greaves / ABB / Siemens.

M&L for Pin/Post type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150mm height, 150 mm dia for 11000 volts grade fixed in repair /replacement complete all as specified and as directed.

M & L for disconnecting electrical connections of servo voltage stabilizer of capacity upto 75 KVA, transporting to workshop/factory for repair , opening for repairing , servicing , calibration and testing for proper functioning and transportation back to site after repair , installation to same or other location and making it fully functional complete all as specified and directed . Note:-Spare/Parts except consumables and minor spares will be measured and paid separetly as supply only under respective items and cost of fixing of these spares, cost of minor spares , consumables is deemed included in the unit rate quoted.

Supply only Micro Controller based fully automatic digital Servo Voltage controller suitable for Servo stabilizer of capacity upto 75 KVA complete all as specified and directed.

Supply only AC servo motor (Synchronous Motor) 240 V ,1 Ph, 50 HZ suitable for Servo stabilizer of capacity upto 75 KVA complete all as specified and directed

Supply only PCB 3 x 25KVA suitable for Servo stabilizer of capacity upto 75 KVA complete all as specified and directed

Supply only protection relay 3x25KVA suitable for Servo stabilizer of capacity upto 75 KVA complete all as specified and directed

Supply and fixing Power Contactor 100 Amps 4 Pole , 415 volts, Power Source AC fixed in repair /replacement complete all as specified and directed.

Supply and fixing Power Contactor 63 Amps 4 Pole , 415 volts, Power Source AC, MCX 12 fixed in repair /replacement complete all as specified and directed.

M&L for providing electric shock treatment chart of size as per existing with good quality frame complete all as directed.

Material and labour for preparation of old treated steel surfaces of Two pole structure by scrapping/grinding the rusted portion throughly ,cleaning and applying two coats of aluminium paint complete all as specified and as directed.

Supply, installation, testing and commissioning outdoor type factory made cubical LT panel board of suitable size, CPRI approved as per latest norms having outer body made out of 3.15 mm and inner compartments made out of 2.0 mm thick CRCA sheet andlegs made of MS angle section 50 mmx 50 mm x 6 mm embedded in PCC 1:2:4 type B-1 , minimum 600 mm above ground level and 450 mm below ground level, f with front and back openable double door system (each door hinged with body at 4 places) lockable, openable with keys, having pad lock arrangement on both sides, with air vent, gasket ‘u’ type for natural flow of air, dust & vermin proof suitable for 3 phase 4 wire 415 volt 50 Hz factor , powder coated withg seven tank process of thickness not less than 100 microns , TPN aluminum bus bar min 200 Amps insulated with colour coding, heat shrinkable and mounted on suitable size ‘F’ class insulators comprising of following :-

Note: The Total amount shall subject to adjustment of credit of Rs. 96571.00 for old Materials as per Schedule of Credit.

GS Engineers (BID ID -3476492)

R D Bansal (BID ID -3481582)