AUGMENTATION OF 33 11KV SUB STATION ALONGWITH ASSOCIATED NETWORK UNDER GE DIPATOLI

Amount

Supply, install, testing & comminssioning Transformer Outdoor, type capacity 2.5 MVA, 33/11KV, 3 phase, 50 Hz, ONAN cooled oil immeresed double wound with copper winding in mild steel tank as per IS-2026 and relevant amendmends issued, step down transformer complete with first filling of IS: 335 ISI Marked filtered & Dehydrated Transformer oil and other standard fittings/Accessories and 9 positon OFF load Tap Changer (OLTC) (Tapping Range +10% in steps of 2.5% Each ) with vector group Dyn -11, mounted on PCC platfrom , including under mentioned accessories complete as specified :- (a) HV bare Bushing 33 KV (b) LV Cable box (c) Lifting Eye bolts-03 Nos (d) Oil conservator tank with oil filiing hole- 01 No. (e) Oil surge Relay (f) Silica gel breather -01 No (g) Oil Drain come filtering valve with plug - 01 No (h) Oil filing come filtering valve with plug - 01 No (j) Marshalling box (having TTB, heater, Lamp, door switch & MCB) (k) Buchholz relay (Having contacts for Alarm & Trip) (l) Earthing terminals-04 Nos (m) Air release plug-01 No (n) Base channels (o) Oil Level indicator

(p) Explosion vent -01 No (q) WTI (Having contacts for Alarm & Trip) (r) OTI - 6" Dial Type (Having contacts for Alarm & Trip) (s) Neutral CT (t) Magnetic Oil Level Guage (Having contacts for Alarm & Trip) (u) Pressure Relief Valve (Having contacts for Alarm & Trip) (v) Window for Tap Number (w) Removable Mannual Crank Handle to Operate OLTC (x) Removable inspection opening (y) Name, Rating & Diagram Plate (z) Transformer platform as per manufature's drawing and cost of the same is deemed to be included in the quoted rate. Note:- (i) Contractor shall submit type test certificate to the engineer - in - charge / GE for approval before placing the order. (ii) Design and drawing to be submitted for approval of accepting officer before placing the order. (iii) Transformer shall be tested by representative of Accepting Officer at factory premises before dispatch.

Supply, laying testing and commissioning of UG HT cables, 33000 volts grade, 3 core 300 sqmm (Earthed), XPLE insulated and PVC sheathed, strip armoured, with multi stranded aluminum conductor, heavy duty conforming to latest relevant IS, cables laid in trenches/ducts/under plinth floors passing through pipes etc, fixed on wall complete all as directed.

Supply, laying testing and commissioning of UG HT cables, 11000 volts grade, 3 core 95 sqmm (Earthed), XPLE insulated and PVC sheathed, steel wire, armoured, with multi stranded aluminum conductor, heavy duty conforming to latest relevant IS, cables laid in trenches/ducts/under plinth floors passing through pipes etc, fixed on wall complete all as directed.

Excavation in trenches in soft/loose soil n.exc 1.5 mtr wide and n.exc 1.5 mtr depth and getting out for taking out / laying of cable complete all as directed.

Supply and providing sand cushioning with dry clean sand 15 cm below cable and 8 cm above the cable complete all as directed. Note : Punned thickness shall be measured for the purpose of payments.

Supplying and laying reinforced precast cement concrete cable covers, Class EHV, Type-1,with peak, size 450 mm x 230 mm x 50 mm in trenches for cable protection, embossed with "HT 33 KV ELECTRIC" on the top surface complete all as directed.

Supplying and laying unreinforced precast cement concrete cable covers, Class HVP, Type-1, with peak, size 300 mm x 180 mm x 40 mm in trenches for cable protection, embossed with "HT 11 KV ELECTRIC" on the top surface complete all as directed.

Removing surplus excavated material to a distance not exc 50 mtrs and depositing where directed at a level not exc 1.5 mtr above the starting point complete all as directed.

Returning, filling in including spreading, levelling, watering and well ramming in layers not exc 25 cm thick complete all as directed.

M&L for trenchless boring under road crossings/foot paths by manual / Boring machine with dia 200 mm complete all as directed at site.

Supply and fix in replacement of 150 mm bore GI pipe light grade fixed on pole /trenches/wall/road crossing etc with clamp nut bolt etc complete all as directed.

Supply and fix in replacement of 100 mm bore GI pipe light grade fixed on pole /trenches/wall/road crossing etc with clamp nut bolt etc complete all as directed.

M&L for PCC (1:4:8) type D2 using 40 mm graded stone aggregate in foundation mass concrete and filling including weathering slightly rounded or chamfered complete with necessary use and waste fo form work complete all as directed.

M&L for Galvanised iron as in cross arms bracing supports, clamps and back plates fabricated from structural steel section including nut, bolts washers welding, drilling holes for bolts in any shape and size as indicated or directed and inclusive of one primer coat one under coat one finishing coat of aluminium paint complete to support the cables all as directed.

S&F for Cable route indicator / Marker made up of PCC Block in 1:3:6 (20 mm graded stone aggregrate) of size 900mm x 300mm x 100 mm thick with "DANGER / 11 KV CABLE / MES or DANGER / 11 KV HT JOINT / MES" embossing on cable route Indicator / Marker including painting as per approved colour and buried in ground 45 Cm including necessary earth work (as required / ordered at site) complete all as directed.

S&F Cable route indicator / Marker made up of PCC Block in 1:3:6 (20 mm graded stone aggregrate) of size 900mm x 300mm x 100 mm thick with "DANGER / 33 KV CABLE / MES or DANGER / 33 KV HT JOINT / MES" embossing on cable route Indicator / Marker including painting as per approved colour and buried in ground 45 Cm including necessary earth work (as required / ordered at site) complete all as directed.

Supply and Fix for Cable jointing kit 33 KV grade cable for straight through Heat shrink type joint complete with jointing material and accessories suitable for 3 core x 300 sqmm XLPE armoured Aluminium conductor cable indoor/outdoor type complete all as directed.

Supply and Fix for Cable jointing kit 33 KV grade cable for outdoor termination Heat shrink type joint complete with jointing material and accessories suitable for XLPE armoured Aluminium conductor cableof size 3 core x 300 sqmm complete all as directed.

Supply and Fix for Cable jointing kit 11 KV grade cable for outdoor termination Heat shrinkble type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Aluminium conductor cable of size 3 core x 95 sqmm complete all as directed.

Supply and fixing for GOD 33KV - 400 Amps Horizontal double break triple pole out door gang operated centre post rotating manually operated isolator having 12.5 KA (RMS) for 3 sec SC rating with 18 nos of 33 KV capacity and pin type post insulator with 320 mm cleavage distance and pedestal of height of 200 mm to maintain line earth clearance of 370 mm mechanically inter locked triple pole earthing switch having independent manually operating handle, complete with supporting structure of suitable channel, nuts and bolts etc as directed and provding with alka theen PVC pipe of dia 10 mm for jumper line connecting from GOD to Transformer etc, complete, all as directed. Note :- (i) Necessary suitable clamps for fixing of ACSR conductor are deemed to be included in the quoted rate. (ii) supply and fix GI structure to be done as per manufacture's recommendation same will be measured and paid seperately.

Supply and fix Lightening arrestor HT 33 KV, non linear resistor type conforming to IS 3070 (Part-1) 1933 complete, line discharge class-3, nominal discharge current 65 KA (Peak), 36 KV rated system, voltage peak value high current implus of 4/10 micro sec wave shape 100 KA (peak) assembly suitable for 33 KV, long duration descharge class-II with insulation level 28/75 KV and mounted on hot dip galvanized steel structure including all clamps, nuts bolts and washers and connecting to earth with 4 mm dia GI wire complete all as directed. Note :- (i) Necessary suitable clamps for fixing of ACSR conductor are deemed to be included in the quoted rate. (ii) supply and fix GI structure to be done as per manufacture's recommendation same will be measured and paid seperately.

Supply, and fixing ACSR conductor including aluminium binding wire of suitable cross sectional area ( but not less than 16 SWG) including line connectors vice type having two brass plate bolts nuts and bolts etc or compression crimping types conductor sleeve joint for jointing of equal size or jumpers, connection and including treatment of ACSR conductor with conducting jelly of any size as reqd at site including line connectors vice tap or compression crimping types conductor sleeve joint of size, complete all as directed.

Supply & fixing 33 KV pin type insulator porcelain vitreous white/brown/green ball and socket type three in series disc assy for tension with tension clamp for conductors, suitable for working pressure 33 KV complete, all as specified and directed. Note :- (i) Necessary suitable clamps for fixing of ACSR conductor are deemed to be included in the quoted rate. (ii) supply and fix GI structure to be done as per manufacture's recommendation same will be measured and paid seperately.

Supply, installation, testing, commssioning of HT 33 KV, 3 phase, 50 cycles totally enclosed metal clad out door VCB switch gear and structure suitable for CT, PT having seperate phase assemblies, each with vaccum interrupter with incoming and outgoing terminals, rupturing capacity 250 MVA, Porcelain chambers for outdoor type application over load and earth fault protection Numerical type relay, ammeter, voltmeter and rating of VCB 1250 Amps VCB shall comply with IEC-62271 and -62271-100 (a) The VCB Rated Voltage -36 KV, rated short circuit current 25 KA at 36 KV, rated short circuit time withstand - 3secs, altitude < 1000m , Operating temp. 25 degree °C to 40 degree °C and mechanical endurance -Class M2 ( 10000 cycles) and Electrical endurance class E2 Mechanical spring charging time - 15 Secs (b) The Out door VCB shall be in a fixed version to be mounted on a steel structure and structure could withstand standard design, suitable for highest seismic conditions ( Zone V) and other severe environmental conditions like exposure to temp (max 50 degree °C) UV, rain, storm, high wind moisture etc.

(c) The VCB shall have following operating mechanism:- (i) Opening and closing push buttons (ii) A mechanical - " open-closed " position indicator (iii) A mechanical "charged -discharged " closing spring indicator (iv) A block of auxilary contacts (v) Auxilary equipment shall satisfy IEC62271-200 standard with 1.5 sqmm PVC insulated flexible 1100 Volts grade FRLS copper wire and shall be marked with at each end for easy verification during maintenance or servicing work (d) Indoor type control panel and relay panel with following specifications :- (i) The panel shall MS free standing , made out of 2mm thick CRCA sheet and powder coated paint, floor mounted suitable for indoor type installation complete with wiring and accessories lamp, plug, socket and space heater etc.

Note:- Rate Quoted by the firm for this item should include the cost of the activities:- (i) PCC work / any civil work for foundation required for errection of VCB and other accessories all as per standard norns. (ii) Contractor shall submit type test certificate to the engineer - in - charge / GE for approval before placing the order. (iii) The contractor will be submitted the NABL accredited lab test reports in original and the same shall be produced well before claiming RAR payment . (iv) The drawings in respect of VCB shall be approved by accepting officer before placing order. (v) VCB shall be tested by representative of Accepting Officer at factory premises before dispatch. All arrangeement for the same shall be arranged by the contractor.

Supply and installation of 33 KV, single phase, out door oil cooled CT of ratio 100-50/1 Amp, class 0.5 / 5P10, burden 15 VA complete all as direced . Note :- (i) Necessary suitable clamps for fixing of ACSR conductor are deemed to be included in the quoted rate. (ii) supply and fix GI structure to be done as per manufacture's recommendation same will be measured and paid seperately.

Supply and installation of 33 KV single phase out door oil cooled PT of ratio 11 KV/rt3/110V/rt3/110V/rt3,Class 0.5-3 / 3P10, Burden 50 VA – 50 VA complete all as direced. Note :- (i) Necessary suitable clamps for fixing of ACSR conductor are deemed to be included in the quoted rate. (ii) supply and fix GI structure to be done as per manufacture's recommendation same will be measured and paid seperately.

Supply, installation, testing and commissioning of 11 KV outdoor type RMU Extensible IP54 floor mounted with internal copper bus bars, outdoor type consisting of fixed type Motorised Vacuum Circuit Breakers-02 Nos as incomer, bus coupler-01 No and fixed type Motorised Vacuum Circuit Breakers -02 Nos as outgoing along with air insulated metering module. All live parts, bus bars of RMU should be enclosed in tank to avoid multiple inter connections & sealed for life robotically welded for three sides and one side manual welded non magnetic / non ferrite/ stainless steel tank Grade 304 of minimum 2.5 mm thick having IP 67 degree of protection filled with SF6 gas to fulfill the requirement as per IEC 60376, 60376 & 603760 B as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200. The unit shall have front cable entry for ease of installation. RMU should be complete with all accessories such as terminal boots, VPIS, cable supports, all front cable terminations , mechanical indications ON/OFF, manometer as per with IEC standards 62271 -200, 60056, 60129, 60265, 60298, 60420, 60529 and 60694. Altitude of installation up to 1000m as per IEC 60120. the unit shall include the following with all necessary standard fitting required at site. RMU should be tested for an internal arc fault of 21KA for 1 sec as per IEC62271-200 and paint shade and thickness should be as per AIS 632 IS - 5 complete all as directed.

The outer enclosure shall cover the full length of the switch gear, to ensure IP55 protection for full door covering of complete switchgear. (a) 2 Nos incomer & 2 No outgoing:- (i) 630A Vacuum Circuit Breaker module for making and breaking of fault current alongwith Earth Switch of full making capacity. (ii) Short time breaking current - 21KA/ 3 Sec Making Capacity - 52.5KA (iii) internal Arc - 21KA/1 Sec (iv) Nominal operating gas pressure 1.3 (minimum) Bar abs. (v) Power frequency withstand voltage - 28 KV (vi) impulse withstand voltage- 170KV (vii) Outdoor Enclosure- IP54 (viii) Front cover mechanism - IP2X (ix) Cable covers -3X (x) stored Energy mechanism for Motor operation - 24VDC (xi) Cable box for front termination of the cable suitable upto 3 core 400 Sqmm, 11 KV XLPE cable (xii) Operation Counter (xiii) Self - Powered Microprocessor based Relay (3 O/C & E/F) with RS485 port and with standard settings - ADR241S (xiv) Digital Multifunction meter (A, V, KW, KVA, F, PF) with RS 485 port type Rishabh/Elmeasure (not applicable for Bus Coupler VCB) (xv) Protection CT-50-100/1A, CI - 5P10, 2.5VA burrden (not applicable for bus coupler VCB) (XVI) Metering CT - 50-100/1A, CI-0.5, 2.5 VA Burden (not applicable for Bus Coupler VCB)

(xvii) Suitable site replaceable Cable bushings (xviii) Arc proof cable covers with interlocking mechanism between doors, earth switch, disconnector & VCB (xix) Capacitive voltage indication fixed type system (xx) Mechanical indications for breaker ON, OFF, EARTH, TRIP, Spring Charged-Discharged. (B) Direct Cable Module - 1 No (i) 630 A Vacuum Circuit Breaker module (ii) Short time current - 21 KA / 3 Sec (iii) internal Arc - 21 KA/1 sec (iv) Nominal operatings gas pressure - 1.3 (minimum) Bar abs. (v) Power frequency withstand voltage - 28 KV (vi) impulse withstand voltage - 75 KV (vii) Outdoor Enclosure - IP54 (viii) Front cover mechanism - IP2X (ix) Cable covers - 3X (x) Stored Energy mechanism for Motor operation-24VDC (xi) cable box for front termination of the cable suitable upto 3 core 400 Sqmm, 11 KV XLPE cable. (xii) Suitable site replaceable Cable bushings (xiii) Arc proof cable cover with self interlocking mechanism between doors, earth switch. disconnector & VCB (xiv) Capacitive voltage indication fixed type system (xv) Mechanical indications for breaker ON, OFF, EARTH, TRIP, SPRING CHARGED-DISCHARGED

(c) Bus Connected PT Unit01 No. for Metering consisting of following:- (i) Type M: Air insulated metering module 12 KV, 630A, 21 KA for 1 sec -3 Voltage Transformers of the ratio 11KV/√3 / 110V/√3, 50 VA, class 1.0 with HT fuses on on primary side and MCB on secondary side. (ii) 1 LED lllumination. (iii) 1 Space Heater with thermostat. (iv) RYB phase indications (v) 1 no. Digital Voltmeter (d) 2x12V 180 AH each battery with battery charger with suitable burden for motor operation. Input 230 V AC & output 24 V DC capacity (e) Capacitive voltage indication fixed type VPIS 9-15 KV (f) Necessary interlocking arrangement for safety and operations (g) One No. Operation Handle for Manual Operations (h) One No. Manometer. (j) Safety Interlocks Shall be provided as per relevant IEC/IS Standards and Manufacturers directions. (k) Above switchgear shall confirm to all relevant IEC/IS Standards. (l) Manualoperation of Vacuum Circuit Breaker should be possible without dismantling the motor from RMU. The motor should be fitted in such a way that it should not be outside front covers of RMU. (m) Operation and instruction mannual with drawings - 01Set. (n) all cable bushing should be replaceable type. (o) Module should be accommeodate as per manufacture's design. (p) RMU cable box shall be front accessible type to have easy access to protection and metering CTS.

(q) Master trip Relay, auxillary relays for tranformer fault (Buchhloz's relay alarm, trip, oil and winding temp- only for 2 nos. Outgoing VCB. (r) 12 Window display for OTI, WTI, Buchilts, trip and alarm etc-02 Nos. outgoing VCB. (s) Local Remote switch (t) Hooter - 02 No. (u) Auxiliary power supply - Single phase Auxiliary Tansformer - 11 KV/230 Volts AC for input to battery charger (v) connection between cable riser panel & coupler VCB shall be cable connected using touch proof kits and same shall be done by OEM only as per theOEM recommended design. (w) Vacuum interrupter should be of same make. cable box should be arc proof with bolted door and interlocked with respective earthing switches. Doors should be removable for the ease access to terminate cables. Note:- Rate Quoted by the firm for this item should include the cost of the following:- (i) PCC work / any civil work for foundation required for errection of VCB and other accessories all as standard norns. (ii) Contractor shall submitt type test certificate to the engineer - in - charge / GE for approval placing the order. (iii) The contractor will be submitted the NABL accredited lab test reports of the RMU's in original and the same shall be produced well before claiming RAR payment of the RMU (iv) Predispatch inspection shall be carried out by Rep of Accepting Officer .All arrangement for the same shall be born by the contractor on his quoted rate (v) Design ,Drawing of RMU shall be submitted by the contractor for approval from the Accepting Officer before placing the order.

Supply,laying,jointing,testing and commissioning XLPE insulated control solid copper conductor, armoured, heavy duty, 650/1100 volts grade cross sectional area 1.5 sqmm 10 core connected as per latest amendment of IS 7098 (Part 1) with copper lugs connected by cramping tools complete all as directed . Note:- Excavation and earth work will be measured and paid separately.

Supply,laying,jointing,testing and commissioning XLPE insulated control solid copper conductor, armoured, heavy duty, 650/1100 volts grade cross sectional area 1.5 sqmm 6 core connected as per latest amendment of IS 7098 (Part 1) with copper lugs connected by cramping tools complete all as directed . Note:- Excavation and earth work will be measured and paid separately.

M & L For hardcore of gauge not exceeding 40mm, deposited ,spread and levelled in layers not exceeding 15cm thick, watered and rammed to a true surface complete all as directed. Note:- Hardcore of gauge not exceeding 40mm shall executed near base of electric poles, LT/HT panels, 02 and 04 pole structures etc.

M &L for GI Earthing complete with GI earth plate electrode 60cm x 60cm x6 mm buried directly in ground vertically to size of earth pit not less than 0.90x 0.90 x 2.25 mtr below ground level with top edge of the plate at a depth not less than 1.5 mtr below ground level, earth plate connected to galvanised earth strip of size 32 x 6 mm, 7.5 mtr long (Min) by means of brazing nuts, bolts, check nuts, & washers ,testing on completion (drawn in earth strip protection pipe light gade GI of size 40 mm bore) by means brazing at both edges with vertical plane of electrode all as shown in plate No 3 of SSR Part - I filling with charcoal dust , and common salt , including necessary excavation and earth work in any type of soil ,perforated watering pipe of size 15 mm bore, funnel with wire mesh,earth strip protection pipe light grade PCC chamber 1:3:6 type C1 (for even finish on both the faces) and RCC cover 1:2:4 Type B1,450 x450 x50 mm thick with 6 mm dia CTD bars 150 mm c/c with 2 Nos of handles of 10 mm dia steel rod and testing on completion and connected to equipment with lugs and screw nuts etc complete all as directed. Note : (i) 7.5 RM GI earth wire deemed to be included in quoted rates, beyond 7.5 RM wire shall be measured and paid separately. (ii) Earth resistance of earth pit should be not more than 02 Ohms on testing after completion if the desired earth resistance is not obtained the earthing will be redone at no extra cost. (iii) Rate quoted by the tenderer is deemed to included salt & Charcoal upto & above 450 mm (Min) top of GI Plate.

S&F for GI earth strip size 32 x 6 mm with and including necessary clamps, nut bolts laid in ground complete all as directed.

RAVINDRA BROTHERS

ASSOCIATED BUILDCON LLP

RASAM ENGINEERING COMPANY