PROVISION OF HT RING MAIN SYSTEM BETWEEN SUB STN A AND SUB STN B AT AF STN MEMAURA

Amount

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) cable, of size 3 core 95 sq mm all as specified and directed.

M&L for Boring of holes under road, pavement, hard standing by trenchless technology using ultra sounding technique and necessary machine including HDPE pipe of 100 mm dia suitable for 0.4 mpa working pressure complete all as specified and directed. Note: If any damages/loss to existing service such as OFC cable/Water pipe line/Electric cables etc shall be repaired immediately by the contractor. Rate quoted above deemed to be inclusive of the same.

Excavation in trenches n.exc 1.5 m wide and n.exc 1.5m depth for laying of pipe/ cable etc and getting out in soft/loose soil complete, all as specified and directed.

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

M&L for 80mm bore GI tubing light grade with all fittings laid along electric pole for cable protection complete all as specified and directed.

Supply & fixing Steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified type 410 SP-55 (11 metres long) incl painting of pole with two coat of aluminium paint over a coat of red oxide primer and applying one coat of synthetic enamel painting of Air Force sky blue colour (0.75M above foundation coping) incl writing Pole No. complete all as specified and directed.

M&L for cement concrete 1:2:4 type B-1 using 20mm graded stone aggregate as in bed blocks, plinth of pole or coping etc including necessary form work, complete all as specified and directed.

M&L for cement concrete 1:3:6 type C-1 using 20mm graded stone aggregate as in foundations, filling and mass concrete, pole foundation etc. complete all as specified and directed.

M&L for cement concrete 1:4:8 type D-2 using 40mm graded stone aggregate in foundation, filling and mass concrete as in sub base of poles etc., complete all as specified and directed.

M&L for cross arms, bracings, supports, clamps, back plates etc., fabricated with strututral steel sections including bolts, nuts, washers etc., welding , bending cold or hot,drilling holes for bolts,in any shape or size, as indicated or as directed and inclusive of one coat of primer , one under coat , and finishing coat of paint all as directed

M&L for danger Notice board , HT, 11000 volts , of size 25 Cm X 20 Cm, 1.6 mm thick, mild steel sheet , vitreous, enameled white with letters , figures and conventional skull and bones in signal red colour and fixed with clamps, bolts, nuts of approved size.

Supply and fixing 11000 volt rating lightening arrestor zinc oxide type complete with all fittings, transmission class, discharge capacity 65 Kilo Amps rating complete all as specified and as directed.

Supply and fixing of HT 11 KV outdoor type triple pole switch air break , gang operated mounted on insulator (09 nos) and steel frame, with operating mechanism worked from ground level for current rating upto 200 amps for working 11000 volts with heavy duty gun metal or brush metal parts both top and bottom contracts with one copper ribon, brass/copper terminal clamps having six nuts & bolts for one connection point complete with locking arrengment complete all as specified and directed.

Supply & fixing DO fuse assembly, triple pole mounted on porcelain HT insulator 6 Nos and MS galvanised steel frame rating upto 200 Amp, 11000 Volt, post insulator type on channel (two insulator for one phase) complete with expulsion type fiberglass fuse carrier barral type and including DO fuse and electrical connections complete all as specified and directed.

S&F ACSR over head aluminium conductor of any type, complete all as specified and directed.

S&F Pin type, porcelain, vitreous, white, brown or green insulator including one Galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150 mm height, 150 mm dia for 11000 volts grade complete all as specified and directed.

Supplying , installation, testing and commissioning of 12 KV, 630 Amps having short circuit capacity 21kA/3-sec, Outdoor (IP54), RMU (Ring main unit) 5-way comprising of 05 Nos 630 Amp Fixed-Type motorized spring-charging VCB electrolytic grade copper busbars all inside single, gas-filled, robotically welded stainless steel 304 (Non Ferrite Non Megnetic Grade) tank with min. thickness 3+0.5 mm, IP 67 Degree of Protection , internal-arc classified 21kA/1sec, on-site-repairable with site replacable bushing/coupling/mechanism, gas refilling etc. The enclosure shall have padlockable double-door access with anti-theft higes, fully covering the front facia and cable boxes to ensure fail-safe anti-theft protection. The unit alongwith Bus-connected, fixed-type potential transformer shall include the following along with all necessary accessories and fittings as required at site. (Make: ABB/Schneider/Crompton/Siemens)

(A) 05 Nos. Outgoing VCB module each consisting of following accessories :- (i) Each function-unit consists of a vacuum-circuit breaker in combination with a three position-switch.The three-position-switch fulfills the operation of the disconnector-function and earthing function. (ii) 12kV, 630A Fixed-Type VCB module with series disconnector cum earthing switch of short circuit breaking current/withstand - 21kA/3-sec, Making Capacity - 50kAp-01 No (iii) Aux. contacts - 1NO+1NC-01 No (iv) Stored-energy motorized high-endurance spring charging mechanism (M1+), with inbuilt spring-charging lever and mechanically latched ON/OFF push-buttons to allow handle-less and un-inhibited operation -01 No (v) Cable terminals (site replacable Cable bushings situated not beyond 300mm from cable-cover to allow ease of access for installation/testing/replacement purposes) with double-door arrangement for enhanced safety (IP54+IP3X) interlocked to prevent access upto 11 KV , 120 Sqmm , 3 Core, XLPE AL cable termination in live-condition. Each Set of Three (vi) Right angle boots (push on type)-Each set of Three (vii) 3O/C + 1E/F self powered numerical protection relay with Low and High set for Over current and Earth Fault. Relay should have facility to display the maximum loaded phase current also.Relay shall record minimum 5 fault records with time stamping. Relay shall be communicable with RS 485 Port on MODBUS Protocol-01 No (viii) Associated ring-core cast-resin insulated CTs 100-50/1 Amp , 2.5 VA, 10P10 for protection - Each Set of Three (viii) Associated ring-core cast-resin insulated CTs 100-50/1 Amp , 2.5 VA, 10P10 for metering - Each Set of Three (ix) Arc proof cable covers with self Interlocking mechanism with earth switch -01 No (x) Capacitive voltage indication fixed type system as per IEC61243 with LED -01 No (xi) Push button for breaker trip (xii) Shunt trip coil 24V DC - 01 (xiii) ON, OFF, TRIP mechanical indication on the front mimic of the panel - 01. (xiv) Emergency Trip Push Button - 01. (xv) Multifunction Meter - 1 No

(B) 03 No. Bus-connected, fixed-type Auxiliary transformer accomodated in separate compartment of matching height and depth, positioned along-side or top of RMU for metering consisting of following accessories :- (i) Voltage transformer of the ratio 11kV/√3/110V/√3, 25VA Class 1.0 with HT fuses on primary side and MCB on secondary. (ii) 2x12 Volt DC battery-01 Set (iii) Battery charger-01 No (iv) HRC fuse-links for primary side isolation and AC/DC MCBs for secondary isolation-01 Set (v) Anti-condensation space-heater-01 No (vi) CFL lamp for illumination and 3-pin socket with switch -01 No

(C) Additional equipment deliverd separately or mounted seperately :- (i) Operationg Handle for Manual Isolator/Disconnector/Earthing Operation-02 Nos (ii) Standard Manometer -01 No (iii) Operation and Maintenance Manual -01 No (iv) Installation & Commissioning Manual -01 No (v) Cable clamping provision (standard) -01No

NOTES:- (i) It is preferable to have all feeder-switches inside single stainless steel compartment with incomer feeders at the extremities to prevent chances of failure due to plug-in coupling arrangement. (ii) Necessay interclocking arrangement shall be provided for safety and operations (iii) Above switchgear shall confirm to relevant IEC (62271-200) for design, manufacturing and internal arc compliance. Any claims towards internal arc compliance, number of mechanical/electrical/short-circuit operations, gas-leakage rates etc. shall not be accepted unless proven via type-test reports of model being offered. (iv) Cost of construction of foundation including construction material, necessary earth work and excavaton as per manufacturer design for RMU complete all as required at site and as directed by Engr-in-charge are deemed to be included in the quoted rate.

S&F Cable jointing kit for 11 KV (Earthed) grade cable for straight through cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and directed. (Make: 3M/Raychem/Denson)

S&F 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 95 sqmm complete all as specified and directed. (Make: 3M/Raychem/Denson)

S&F 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 95 sqmm complete all as specified and directed. (Make: 3M/Raychem/Denson)

M&L for cable route indicator for 11100 Volts grade cable with 150 mm dia cast iron plate circular or rectangular in shape of minimum 8 mm thickness welded with 35x35x4 mm angle iron mast 0.5 mtr from the GL including PCC foundation 1:3:6 type C1 of size 30x30x45 cm and necessary earth work all as directed.

M&L for construction of brick masonry cable pit chamber with sub-class 'B' brick built in cement mortar (1:6) of size 1500 x 1500 x 1500 mm (internal dimension) with one brick walling and 180 cm x180 cm x 10 cm base foudation with PCC 1:3:6 rendering cement plastering 10 mm thick with cement mortar (1:4) on internal & exposed surfaces, including RCC cover of size 1.8 mtr x 1.8 mtr x 0.075 mtr made out 8 mm dia steel bar including necessary earth work excavation, returnining filling and removing surplus complete all as specified and as directed.

M&L for earthing complete with galvanised steel earth plate electrode 600x600x6.00 mm thick, burried directly in ground vertically to a depth not less than 2.25 mtr deep below GL with top edge of the plate not less than 1.5 mtr below normal GL and connected to earth plate . Earth plate surrounded by 15 cm thick packed layers of charcoal/coke and common salt upto 0.90 meter depth all around the earth plate and connected to earth lead of GI strip 25x4 mm by means of bolts, nuts, check nuts and washers of GI or steel and thimbles and other end of the earth wire connected to equipments/panels and protected by galvanized iron or steel pipe medium grade 40 mm bore and water pipe 20 mm bore GI light grade with funnel and wire mesh, including all necessary excavation and earth work PCC chamber in cement concrete 1:3:6 type C-2 and RCC cover and all as shown in electrical plate No 3 of MES schedule Pt I of 2009 and also including making test point for testing of earthing complete all as specified and as directed. Note : 1. RCC pit cover shall be pre-cast of RCC (1:2:4) type B-I , 50mm thick reinforced with XPM weighting not less than 4 KG/sqmm in lieu of CI cover. 2. Charcoal/coke and common salt upto 0.90 meter depth shall be filled in layers of 15 centimeters all around the earth plate. 3. On testing after completion of earthing if desired earth resistance is not achieved , the earthing will be redone at no extra cost to obtain the desired earth values.

M&L for earthing complete with galvanised steel earth plate electrode 600x600x6.00 mm thick, burried directly in ground vertically to a depth not less than 2.25 mtr deep below GL with top edge of the plate not less than 1.5 mtr below normal GL and connected to earth plate . Earth plate surrounded by 15 cm thick packed layers of charcoal/coke and common salt upto 0.90 meter depth all around the earth plate and connected to earth lead of GI wire 4 mm dia by means of bolts, nuts, check nuts and washers of GI or steel and thimbles and other end of the earth wire connected to equipments/panels and protected by galvanized iron or steel pipe medium grade 15 mm bore and water pipe 20 mm bore GI light grade with funnel and wire mesh, including all necessary excavation and earth work PCC chamber in cement concrete 1:3:6 type C-2 and RCC cover and all as shown in electrical plate No 3 of MES schedule Pt I of 2009 and also including making test point for testing of earthing complete all as specified and as directed. Note : 1. RCC pit cover shall be pre-cast of RCC (1:2:4) type B-I , 50mm thick reinforced with XPM weighting not less than 4 KG/sqmm in lieu of CI cover. 2. Charcoal/coke and common salt upto 0.90 meter depth shall be filled in layers of 15 centimeters all around the earth plate. 3. On testing after completion of earthing if desired earth resistance is not achieved , the earthing will be redone at no extra cost to obtain the desired earth values.

Diamond Electric Co.

Industrial Traders

AUTOMATION AND SWITCHGEAR PANELS

Ashirwad Contractor and Supplier

R D Bansal

GUPTA ENGINEERING WORKS