PROVN OF 1500 KVA TRANSFORMER FOR 33 KV AT 24 ED UNDER AGE (I) AF MANAURI

Amount

Supply installation testing and commissioning of Step down transformer for 33/11 KV 3 phase 50 Hzs 1500 KVA (1.5 MVA) copper wounded 50° Celsius oil immersed and naturally cooled transfomer for outdoor use complete with first oil filling of IS : 335 1993 ISI marked filtered & dehydrated transformer oil , connected DELTA on HV side and STAR on LV side with additional neutal brought out. No load with manually operated OFF load TAP CHANGER connected to HV side and provided with 17 position on load tap changer (OLTC) in range tapping range(+) 5% to (-) 15% in steps of 1.25% each with remote tap cubical changer (RTCC) panel & automatic voltage regulator (AVR) with vector group Dyn-11 for full load temperature rise not exceeding 50° Celsius by themometer in oil and 55° Celsius by resistance of winding after continuous run at full load rating complete with standard mounting and terminal arrangement as per IS- 2026 and including submission of manufacturer's test certificate complete (Average ambient temp 40° Celsius with a maximum of 50° Celsius all as specified and comprising to as under:- Note :-The rates are deemed to be inclusive of suitable size of copper control cables from transformer marshalling box to protection relay on indoor CR panel.

(a) Cable boxes on 11 KV secondary side for three core XLPE cable upto 02 No runs (01 as stand by) in size 3 core x 300 Sqmm with end termination jointing kit, thembling etc on primary side complete all upto disconnecting chamber with suitable terminal and bus bar made out by copper conductor. (b) HV bushing with arching horn on 33 KV side. (c) Oil conservator with filling hole cap drain valve and level gauge. (d) Dehydration breather with connecting pipe , first fill off dehydrating agent and transformer oil with seal. (e) Explosion relief vent mounted on tank with double diapharam and equiliser pipe connection to conservator air space (pressure release device) (f) Air relief plug and Thermometer pocket (g) Shut off valve between the conservator and buchoiz relay. (h) 150 MM dia type with thermometer for oil temperature indicator having range 0- 120 C vapour pressure type with maximum reading pointer / Max temperature indicator having and resetting device with alarm/ trip contract and additional contacts for watching on or the cooling fan. (j) 100 MM dia magnetic oil level gauge with law -level alarm contacts . (k) Two earthing terminals on tank and tank cover with lugs to suit 32 MM x 6 MM GI strip and rating with diagram plate. (l) Winding temperature thermometer with electrical contacts for alarm/ strip and controlling fan. Drain valve with threaded adapter, filter valve with a threaded adopter (top and bottom) (m) Two sampling valve at the top and bottom of main tank. Inspection covers, lifting lugs. Four plane roller , bi-directional, hinged type at the bottom for shiftting tranformer from one place to another place, top cover lifting eyes. (n) Double float Buchoz relay with strip and alarm contrcts. Extra bushing outside the cables box for providing independent earthing. First filled the transformer oil.

(o) Rail section and channel ISM 150- (02 Nos ) in size minimum 150 x 150 with 12 MM thick 6 Meter long, grouting/ embedded in suitable size foundation and including PCC in ratio 1:3:6 type C1 platform of minimum size 4 M x4 M x 6 Meters with indicating lamp and necessary brick work, earth work for excavation as directed and as per manufaturer 's recommendation including rendering 10 MM thick cement plaster in CM 1:4 on fair faces of brick work with applying three coat of white wash on newly plaster / foundation faces . - 01 Job (p) Plinth foundation work in stanadard size as per IS / Manufacturer specification minimum 1.2 Mtr above ground level and 0.9 Mtr below , in minimum size 6 Mtr x 6 Mtr using brick work in supporting wall around the plinth only for other space shall be filled by 63 MM boulder mix with cement mortar in ratio 1;4:8 including slab at top edge shall be RCC with 10 MM MS bar in 12 inches square box including cutting welding bending across the plinth size. The 250 MM x 250 MM x 12 MM thick MS girder in 6 Mtr length shall be fixed against point load bearing of transformer grouting in RCC slab with locking arrangement for transformer wheel complete with step etc.including 40 MM x 40 MM x6 MM MS angle in around the plinth foundation grouting in RCC slab etc all as directed. Note : Quoted rate shall be inclusive of the cost of all above specified items and any other item required as per site complete for plinth foundation. (q) Shutt of valve between cooling tubes and tank. Note : (i) The oil temperature and winding tempratue gauge shall be housed on MS box made out of 16 gauge MS sheet/ The size of MS box shall be 600 x 600 x 300 MM with hinged door and having glass 3 MM thick on front side box and provision for entry of cables and compression glands. (ii) The quoted rates shall be included cost of site required all other work complete made to functional.

Supply. Install, testing and commisioning of automatic remote control tap changer panel in metal clad totally enclosed dust proof , double shutter cubical housing cabinet, indoor type, platform mounted CPRI approved factory made, totally enclosed, dust and vermin proof made out by 2.15 MM thick CRCA MS sheet in size 700 MM width x 600 MM depth x 2200 MM height and full built upon angle iron frame in size 40 x40 x 6 MM, having front and rear hinged both side openable doors and liffting lugs (02 Nos) , locking arrangement to be connect to earthing strip at rear side, bottom detachable both side openable ,gland plate complete with suitable size zinc plated and passivated nut, bolts, spring and washers sheet steel bus bar chambers having front hinged covers with a set of electrolytic grade high conductivity. The cabinet and all members should be chemically treated with MSR solution for anticorrosive treatment. The panel shall be epoxy powder coated and the control circuit shall be connected by multi stranded copper conductor flexible wire 1.5 Sqmm in proper colour coding and drawn through in flexible conduit with complete internal wirring in suitable rating complete consisting with analog oil and winding temps buchlzalar trip relay for tranformer oil level, voltage transformer supervision protection operated and digital meter and indicator lamp LED complete all as specified and directed.

Supply, installation testing and commissioning of DC control panel of 30 volts DC dry type chargeable stationery battery set consists 15 cell of 12 volts each having 90 Amps hours capacity with maintenance free batteries including battery charging set of adequate capacity and control equipment sheet steel cabinet floor mounted type suitable for input 230 voltsingle phase 50 Hzs AC supply complete with external and internal connection using appropriate accessories for feeding supply to 33 and 11 KV control panels and VCBs making control wiring to connecting the DC triping set to 33 KV and 11 KV VCB control panels using appropriate size of copper cable in muilti core not less than 2.5 Sqmm copper cable complete with comprising all as under:- (a) DC digital Ammeter and volt meter (01 Set each) in suitable rating (b) Step down transformer , choke to limit the inrush current (c) Variac (auto transformer) for the manual stepless charging system with auto cut (d) Silicon Rectifier stack , auto off manual switch and set of protection fuses in suitable rating (e) Set of indication LED lamp to indicate position of charging on auto trickle mains on battery earth and fuses failure (f) Battery switch to indicate the battery voltage.

Supply, install, testing and commissioning of gang operated air break isolator switch out door type triple pole revolving type and double break suitable for horizontal mounting consisting of hot dip galvanized channel iron base having 2 Nos 33 KV working pressure post type insulator in stack and 3 such stacks per pole ,copper or copper alloy high pressure heavily tinned and double contacts plated MS arcing horns capable of breaking magnetising current complete with phase coupling bar 25 MM dia GI pipe as down rod , lever coupling and operating handle with locking arrangement as for both ON and "OFF" positions coupling connections etc suitable fo 33 KV 3 phase 50 HZs Ac supply system having 200 Amps capacity all as speicified in IS - 1818 of Oct 1972 including interlocking with 33 KV VCB (out door type) complete all as specified and directed. Note : MS structure shall be measured and paid separately Make : Brother Jaipuriya/ BHEL /Universal

Supply, straining and stringing of alumunium conductor steel reinforced (ACSR) in given specification/ make /model/ type etc for making interconnection of net work fixing on existed structure/pole etc for making inter connection in yard including thembles / cramping bolt with nut washer / PG clamp etc as per site requirement complete all as specified and as directed. Note :- (i) Sagging length of ACSR conductor (in given size / make / model) shall be deemed included in the quoted unit rates no separate measurement shall be paid to contractor. (ii) Quoted rates shall be inclusive of the cost of all required accessories i.e.thembles / cramping bolt / PG clamp with nut bolt and washer etc to all required for making inter connection between protection devices in bay of yard. (iii) All run of ACSR shall be continuosly painted by luminious colour paint in colour coding OR covered by luminious colour strip.

Supply and fixing cross arms / angle frame / MS sheet to made out bracings supports / clamp , back plates fabricated from strucural steel sections including nut bolt washers etc with bending cutting welding to hot /cold drilling holes for bolts in any shape or size as indicated inclusive of applying one priming coat and two coats using synthetic enamelled paint conforming to Fe 410 W (Gde- E- 250) quality "A" complete all as specified and directed.

M&L for lightening arrestor non linear resistor type confirming to Fe 410 W (gde -E-250) quality "A" complete line discharge class 3 nominal discharge current 10 KA station class & high discharge with stand 100 KA assembly suitable for 33 KV working pressure and mounted on hot dip galvanised steel structure including all clamp nuts bolt and washers etc connecting to earth 32 x 6 MM GI strip including taking out the same complete all as specified and directed. Note ;- MS channel and angle shall be measured and paid seperately.

Supply, install, testing & commissioning to current transformer outdoor type 33 KV working pressure single pole, oil immersed and self cooled type suitable for metering and protection SP-10, for rated burden 15 VA solidly earthed having ratio 50/ 25/ 5+5+1, short time rating 13-1 KA for 1 second etc all other specification suitable to be fix with above specified transformer as per existed and suitable to be fix on steel structure complete all as specified and directed. Note:- MS channel and angle shall be measured and paid separately.

Supply, install, testing & commissioning of potential transformer (PT) outdoor type 33KV single pole self cooled type solidly earthed 50 Hz of ratio 33KV/ root 3 (1.732)/110V/ root 3(1.732) rated burden 100VA with 0.5 accuracy (33KV/3/ 110V/3 ) etc all other specification suitable to be fix with above specified transformer as per existing and suitable to be fix on steel structure complete all as specified and directed. Note :- MS channel and angle shall be measured and paid separately.

Supply and fix for three- in- series assembly each having working pressure of suitable for working presure 33 KV (33000 volt ) three -in- series assembly for tension with tension clamp insulator porcelain brown vitreous insulator with spindle nut of size 145 MM height 255 MM dia including galvanised mild steel spindle two Nos socket type GI washer,bolt & nut complete all as specified and directed.

All as per item No-10 above but post insulator in three- in- stage suitable for working pressure 33KV in three stage complete with fixing accessories complete.

Supply and fixing in replacement to PG clamp suitable for ACSR for making inter connection on 33 KV net work complete all as specified and directed.

Supply, laid in trench/ fixed with surface of wall / roof etc, jointing, thembling and glanding in suitable size , testing in replacement to cable XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cable (heavy duty) with alumunium conductor 33 KV, grade cross section area 300 Sqmm x 3 core complete all as specified and directed.

Supply, laid in trench / fixed with surface of wall / roof etc in given site, jointing, thembling and glanding in suitable size , testing to cable XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cable (heavy duty) with alumunium conductor 11000 volts, (earthed) grade cross section area 240 Sqmm x 3 core complete all as specification and directed.

Supply, laid in trench / fixed with surface of wall / roof etc in given site, jointing, thembling and glanding in suitable size , testing to cable XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured electric power cable (heavy duty) with alumunium conductor 11000 volts, (earthed) grade cross section area 120 Sqmm x 3 core complete all as specification and directed. Note for item No 13 to 15: (i) Excavation & earth work, sand cushioning, brick protection shall be measured and paid under respective items (ii) Quoted rated shall be inclusive of cost of route indicator made out by angle 40 x 40 x 6 MM and minimum 75 CM long with welded round plate 150 MM dia x 6 MM thick grouting on PCC foundation 45 CMx 45 CM x 45 CM apart at 30 RM interval as directed.

Supply, fixing, connecting jointing thembling to end of cable, testing etc on given site to cable jointing kit for 11 KV (Earthed) grade cable for out door type end termination heat shrink type joint complete with jointing material and accessories suitable for three core x 120 to 185 Sqmm XLPE armoured alumunium conductor cable complete all as specified and directed.

Supply, fixing, connecting jointing thembling to end of cable, testing etc on given site to cable jointing kit for 11 KV (Earthed) grade cable for out door type end termination heat shrink type joint complete with jointing material and accessories suitable for three core x 240 to 300 Sqmm XLPE armoured alumunium conductor cable complete all as specified and directed.

Supply, fixing, connecting jointing thembling to end of cable, testing etc in replacement on given site to cable jointing kit for 33 KV (Earthed) grade cable for out door type end termination heat shrink type joint complete with jointing material and accessories suitable for three core x 240 to 300 Sqmm XLPE armoured alumunium conductor cable complete all as specified and directed.

Excavation in trenches not exceeding 1.5 Mtr wide and not exceeding 1.5mtr in depth for laying of cable etc and getting out in soft/loose soil, complete all as specified and directed. (NOTE: Excavation & earthwork for cables shall be carried out by JCB's or manual method as per direction of Engineer-in -Charge).

Returning & filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 CM thick in soft/ loose soil, complete all as specified and directed.

Removing excavated material not exceeding 50 Mts and deposting where directed at a level not exceeding 1.5mtr above the starting point complete all as specified and directed.

M&L for boring of holes under road /drain /PCC path by manual method for inserting upto 150 MM dia light grade GI tubing for cable protection in minimum 1.0 Meter depth complete all as specified and directed. Note : Quoted rate shall be included cost for required material for repair to disturbed surface as per existing.

M&L for sand cushioning (dry sand) to under ground cable for cable protection with layer of 8 cm deep before laying the cable and 15 cm depth after laying the cable, complete all as specified and directed. Note : Punned thickness of sand layers shall be measured and paid . (NOTE : Punned thickness of sand layers shall be measured and paid).

Supply and laying un-reinforced precast concrete cable cover, class HVP, type 1 with peak size 300 MM x 180 MM x 40 MM complete all as specified and directed.

S&F steel tubing 150 MM bore, galvanised, light grade with and including required fittings such as clamp made out by GI strip in size 32 MM , Nut bolts etc for fixing to cable protection / laid in trenches, under road crossing, fixed on poles /walls etc complete all as specified and directed.

S&F steel tubing 100 MM bore, galvanised, light grade with and including required fittings such as clamp made out by GI strip in size 32 MM , Nut bolts etc for fixing to cable protection / laid in trenches, under road crossing, fixed on poles /walls etc complete all as specified and directed.

M&L for earthing with galvanised cast iron earth plate of size 600 MM x 600 MMx 6 MM thick burred directly in ground not less than 2.25 Mtr below normal ground level, earth plate packed on all side with charcoal mixed wih salt to a thickness of 150 MM connected by GI earth strip of size 32 MM x 6 MM thick soldered and rivetted to earth plate. GI earth strip will be protected by using 50 MM bore light grade GI pipe from earth plate to be connecting objects including flat iron clamp 25 MM x 3 MM including bolts nut and washers complete including watering GI pipe 25 MM dia light grade 2.5 Mtr long the earthing include PCC pit including necessary earth work and disposal of surplus soil to a distance not less than 50 Mtr, chamber of PCC (1:4:8) type D2 using 40 MM graded stone aggregate, coping shall be PCC(1:3:6) type C1 using 20 MM graded stone aggregate, RCC pit cover 50 MM thick (1:2:4) type B1 using 20 MM graded stone aggregate, reinforced with 8 mm dia TMT bar at 80 MM C/C both way in lieu of CI pit cover and angle iron frame including funnel, wire mess, GI earth strip of size 32 MM x 6 MM under the earth and on the pole upto height of 1.5 Mtr shall be protected by 50 MM dia GI pipe (Light grade) GI pipe to be fixed with connecting objects by means of 2 Nos flat iron clamps 25 MM x 3 MM size complete with bolts, nuts, washers etc including testing complete all as specified and directed and shown in electrical plate No 3 of MES SSR part -I 2009. Note :- Quoted rates shall be included the cost of earthing strip in size 32 x 6 MM length upto 7.5 Mtr (as directed) with drawn through in GI pipe in 50 MM dia of bore including earth work as site required and directed.

S&F earth continuity conductor or main earth lead copper strip 25 MM x 4 MM with saddles and fixing screws etc for roof conductors/ laid in trench etc at site above ground level connecting to various equipments in installation complete all as specified and directed.

S&F galvanised strip 32 MM x 6 MM with saddles and fixing screws etc for roof conductors above ground level / laid in trench etc connecting to various equipments in Installation as per site complete all as specified and directed.

M&L for cable trench in size 90 cm deep above sub base, 60cm clear width between one brick thick wall brick work using cement mortar in ratio 1:4 including 10mm thick plaster in CM 1:4 on fair faces i.e. inner side of brick wall including 50mm thick RCC (1:1.5:3) pit cover using 10mm dia TMT bars @ 100mm c/c bothways suitable to hold 600 kg/Sqmm point load of minimum size 1m x 1.06m using fair faces form work including holding handle 02 Nos made out by 10mm dia round bars and grouting of MS angle "U" clamp in both side surface wall at appropriate height as directed for holding to run of cable 1 Mtr interval apart complete with earth work/ cutting road/ hard standing/PCC path etc to all and full fill the trench with sand complete all as specified and directed by Engr-in-Charge. Note: (i) The drawing of trench shall be approved by AGE (I) Manauri based on site requirement. (ii) Cost of 50mm thick PCC sub base (1:4:8) on bottom edge of trench shall be deemed to included in quoted unit rate. (iii) Excavation earth work, removal of soil, sand filling shall be measured under respective items of BOQ and rates quoted are exclusive of these items.

S&F in replacement to notice plate / caution sign board made out by 1.6 MM thick mild steel sheet vitreous enamelled white with letter figures and conventional skull and bones in signal red colour and fixed with MS clamps ,bolts and nuts of approved size for HT net work in size 25 x 20 CM complete all as specified and directed. Note : Given caution shall be written in two language i.e. Hindi and English.

DEORA ELECTRIC WORKS