Upgradation of 66 KV MRS under GE(East), JRC

Amount

Note: (i) Please refer Schedule 'A' Notes given on serial page No. 14 to 16 of tender documents.

LIST OF WORKS FOR EXTERNAL ELECTRIC SUPPLY WORKS

Taking down carefully old Power Transformer 66/11 KV ,8 MVA carefully and including breaking of PCC making good the disturbed surface complete all as specified and directed.

Taking down C & R Panel complete all as speicified and directed.

Dismantling and taking down existing 66 KV SF6 breaker complete all as directed.

Taking down 66 KV LA complete all as directed.

Taking down CTs complete all as directed.

Taking down HT ,11 KV cable 400 Sqm 3 core with cable boxes complete all as specified and directed

Taking down of copper control cable of size 4/10 Sqmm complete all as directed. Note:- For Ser item No 3.00 to 9.00:- Taking down material deposited in MES yard as per direction by Engineer-in-charge.

Excavating in trenches in soft / loose soil, not exceeding 1.50 m wide and not exceeding 1.50 m in depth for foundation for pipes, walls, cesspits, manholes, pier holes, cables etc not exceeding 10 Sqm on plan and not exceeding 1.50 m in depth and getting out complete all as specified and directed

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

Removal of excavated spoil to a distance not exc. 50m and depositing where directed at a level not exc. 1.5m above the starting point complete all as specified and directed.

Material and labour for sand cushioning with a layer of sand 8cm thick before laying of cable and 15 cm thick after laying of cable in trenches complete all as specified.

Supply, laying and testing cable XLPE insulated screened PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts grade earthed, of size 3 core 400 sqmm complete all as specified.

Supply and laying un-reinforced precast concrete cable cover, class HV, type 2, flat, size 450mm x 180mm x 40mm laid flat in trenches over the cable with the length of brick perpendicular to the direction of cable length, adjacent/abutting each other complete all as specified and directed by Engineer-in-charge.

Supply and laying 40-63mm graded stone aggregate spread around the plinth mounted transformer/ four pole strcture of transformer complete all as specified and directed.

Supply and fixing cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 400 sqmm complete all as specified and directed.

Supply and fixing cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 400 sqmm complete all as specified and directed.

Material and labour for Earthing complete for transformer/ VCB Panels with galvanised steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground vertically at a depth not less than 2.25 metres below normal ground level with top edge of the plate at a depth not less than 1.5 metres below normal ground level, connected to galvanised earth lead wire 32mm x 6mm and including GI pipe 50mm bore light grade as protection pipe (from top of earth plate up to the test point) by means of GI bolts, nuts, check nuts and washers of GI and thimbles, earth plate surrounded by packed layers of charcoal dust and common salt 15cm thick, all around including top and bottom and watering pipe 20mm bore of GI pipe light grade with funnel and wire mesh, PCC chamber of size 300x300x300mm(top of chamber minimum 15 cm above the normal ground level (1:3:6) using 20mm graded stone aggregate and RCC cover (1:2:4) type B-1 using 20mm graded crushed stone aggregate of 25mm thick with 2 nos MS handles of 12mm dia including necessary excavation/ earth work in any type of soil/rock and as shown in Electrical plate No. 3 of SSR Part-I (2009) testing on completion complete all as specified.

Supply, install, testing and commissioning Power Transformer of capacity 8 MVA, 66/11 KV Copper wound two winding core type outdoor type as per IS onload tap changer with RTCC and AVR for OLTC from (+) 5% to (-) 15% in step of 1.25% ,HV bare bushing termination and for LV side 11 KV have bushing termination IS :2026 incl first filling of transformer oil with following fitting and accesories complete. (A) Accesories:- (a) Buchloz relay with alarm and trip contact-01 No (b) Oil Temparture indicator 6 " dia with A/T contact 2 Amp -01 No (c) Winding Temparture indicator 6" dia with A/T contact 2 Amp-01 No (d) Oil Survey relay -01 No (e) Marshailing box-01 No (B) Fitting:- (a) Conservator tank with oil filling hole with and drain plug (b) Oil level indicator with minimum level marking-01 Nos (c) Thermometer packets-02 Nos (d) Silica gel breather -01 No (e) Air realese plug -01 No (f) Lifting plug-04 Nos (g) Earthing terminal-02 Nos (h) Bi-directional Roller -04 Nos (j) Anodized aluminium rating and diagram plate -01 Nos (k) Bottom drum-cum filter valve-01 No (l) Explosion vent with diahragm -01 No (m) Radiator-01 Set (n) Jacking pad-01 Set (p) OLTC panel (q) RTCC&AVR Panel

Note:- 1. The errection of transformer shall be done under the supervison of manufacturer auth rep & certificate to this office shall be submitted by the contractor duly signed by manufacturer auth rep & Engineer-in-charge. 2. The transformer shall be fixed on platform to be constructed as per design by manufactrure ,cost of platform shall deemed to be included in the unit rate quoted by the contractor for the transformer ,No claim whatever shall be entertained on this acount a later stage. 3. Drawing and make for power transformer shall be approved by GE before placement of order. 4. Pre dispatch inspection shall be carried out by nominated rep of Accepting Officer within overall cost quoted. 5. Pre -commisioning shall be carried out by SEI from HQ CE WC within overall cost quoted. 6.Pre-commisioning of power transformer and 66 KV Network by state electricity board /PSPCL shall also be got carried out within overall cost quoted. 7. Testing of 8 MVA power transformer shall be carried out by SEI from HQ CEWC.

Supplying, installation, testing and commisioning of circuit breaker outdoor type 66 KV nominal voltage ,3 phase ,50 Hz ,SF6 gas circuit breaker outdoor type,72.5 KV ,2000 Amp normal current ,160 KV withstand voltage ,350 KV (P) impulse voltage ,31.5 KV short ciruit breaking capacity (180) complete as per IEC with all accesories to meet the following technical requirment:- (A) ELECTRICAL CHARACTERSTICS:- (a) Network time constant (L/R)-45 ms (b) Temperature range (-) 5/(+) 40 centigrade (c) Seismetic activity -0.2 g (d) Breaking Current -31.5 KA (e) Rated normal current -2000A (f) Rated peak withstand current-79 KA peak (g) Rated short-time withstand current (1s) -31.5 KA (h) Rated short-circuit making current -79 KA peak (j) First -pole -to clear factor -1.5 (k) Minimum creepage distance-25 mm/KV (B) DI-ELECTRIC CHARACTERSTICS:- (a) Insulation level Lightening impulse withstand voltage between open contacts KV 325 to earth KV 325 (b) Power frequency withstand voltage between open contacts KV 140 to earth KV 140 (c) Type of insulator -Porcelain brown

(C) (a) Max break time -50 ms (b) Max closing time-70 ms (c) Mode of operation-Three pole (d) Rated supply voltage for control -110 V DC (e) Motor-230 V AC,Heater 230 V AC (f) No of trip coils-02 Nos (g) No of closing coils-01 No (h) Mechanical endurance -10000(M2)

Supplying, installation, testing and commsissioning of Control and Relay panel for the operating system of 66 KV Grid working of 66 KV ,CT, PT SF6 outdoor and protection of thermometer including relay VAA 33,VAJHM 23, VAX 31-2 IDMT relay non directional type with enunciator 16 ways KVAR, power factor meter KWH meter having master follower scheme complete with following accesories (a) 16 points solid state alarm enunciator suitable for 110 V DC -01 No (b) Hooter 110 V DC -01 No (c) Ammeter digital type 150/75/1A CTR 200/100/1 A Amp size 144 mm x 144 mm-01 No (d) Voltmeter digital type (0-75) KV ,PTR 66 KV/110 V,size 144x144 mm-01 No (e) Power Factor meter (0.5 Lag -1-0.5 Lead) 1A,110 V ,3 ph, 3 wire 2 element ,size 144 mm *144 mm-01 No (f) Frequency meter (45-50-55)HZ 110 V AC,size 144 mmx 144 mm-01 No (g) KVAR meter 200/100/1A,PTR 66KV/110V ,3 Ph ,3 Wire ,2 elements, size 144 mm *144 mm-01 No (h) Energy meter 3 phase ,3 wire ,2 element ,CTR 200/100/1A PTR 66 KV 110V flush mounting -01 No (j) Semaphore indicator 48 mm dia,110 V DC-03 Nos (k) Semaphore indicator 63 mm dia,110V DC-01 No (l) Breaker control switch with lost motion device -01No (m) Transformer diffrent relay type ,suitable for auxilary supply 11 V DC

Supplying ,installation ,testing and commisioning of CT 72.5 KV Outdoor type current Transformer 200/1001+1+1 (Incommer) for metering and protection ,including CT Junction boxes complete oil cooled ,short time thermal current for 3 sec duration 31.5 (rms) ,Dynamic current rating 78.75 KA peak ,Lightening impulse withstand voltage (1.2/50 s) 325 KV Power frequency withstand voltage 140 KV for 1 minute ,One minute power frequency with stand voltage between terminal and earth 3 KV minimum creepage distance 25 mm/KV, 2 limbed core type porcelain clad,oil filled outdoor hermatically sealed, suitable for mounting steel structure valid at all ratio ,Rev meter class 0.5 for core 01 class 5 PID for core 2 and all relevant specification applicable & complete with steel structure founation bolts , PCC 1:3:6 in founadation and finishing the surface complete all as specified.

Supplying installation ,testing and commisioning of Lightening arrestor for LINE and transformer 66 KV class station heavy duty metal oxide gapless type LA for use effective ground neutral system with insulating base including surge counter for 66 KV with all accesories to meet the technical requirment of the latest released edition of complete with steel structure ,foundation bolt PCC 1:3:6 in foundation and finishing the surface all as specified: (a) Nominal system voltage (Um) -66 KV (b) Highest system voltage (Ur) - 72.5 KV (c) Continues operation voltage (Uc) -52 KV (d) Nominal discharge current (8/20 ms)-10 KA peak (e) Minimum temporary overvoltage withstand for 1 to 10 sec (with prior) rated energy duty-140 KV (f) Line discharge- Class 3 (g) High Discharge current withstand strength (4/10ms)-100 KA peak (h) Max residual voltage -165 KVP at 01 KA peak (j) Minimum creepage distance-25 mm/KV (k) External insulation requirment as per IEC

Material and labour for Armoured Copper Control Cable of size 2.5 sqmm x 10 core, 1100 volt complete all as specified and as directed.

Material and labour for Armoured Copper Control Cable of size 2.5 Sqmm x 4 core, 1100 volt complete all as specified and as directed.

Material and labour and fabrication of glow distribution diagram of HT feeders including showing of all transformers, RMUs, sub stations etc comprising of printing of complete distribution diagram on vinyle sheet weather proof and pasting the same on bakelite sheet 3mm thick (min) of size 8' x 10' x 4" fixed on MS frame of size 8' x 10' x 4" made out of square MS pipe of size 25mm x 25mm. All LEDs on different feeders, transformers, RMU etc to be shown on 13 independent circuits controlled through suitable copper wound transformers, diaodes and capacitor and through toggle switches on all circuits complete prewired with PVC insulated copper conductor wire of suitable size with connecting lead of wire PVC insulated, PVC sheathed flexible copper conductor wire 3 core, 40/ 0.0076 size 5 mtr long and one top plug 3 pin 5 amps, including fixing the same at 66 KV MRS on wall and including all fixing material required complete all as directed.

Supply and laying Insulation mat class 'B' confirming to IS15652-2006 (ISI Mark) of sizes 2.5 MM thickness x 1 Mtr width and 20 Mtr length ,working voltage 11 KV, dieletric strength 45 KV complete all as specified and directed Make :- Vardhman or equivalent.

Supply and laying Rubber mat of sizes 20 MM thickness x 1 Mtr width and 2 Mtr length As per IS 5424 complete all as specified and directed Make :- Vardhman or equivalent.

JAZZCON ENGINEERS PVT LTD

JCC ENGINEERS PRIVATE LIMITED

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