SPECIAL REPAIR FOR REPLACEMENT OF HT CABLE FROM ACHARYA NIWAS SUB STATION TO MAIN PUMP HOUSE VCB AND LT CABLE FROM RS1 SUB STATION TO DHANUSH SUB STATION AND AUGMENTATION OF EXTERNAL ELECTRIC SUPPLY NEAR BUILDING NO R6 AT NEW NAVY NAGAR AT GE NW NAVY

Amount

Supply, laying & 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, of size 3 core 185 sq mm as specified and directed by Engineer-in-Charge.

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 1100 volts grade, of size 3.5 core 400 sq mm as specified and directed by Engineer-in-Charge.

Excavation in trenches not exc 1.5 mtr wide and not exc1.5 mtr in depth for laying of cables etc. in any type of soil and getting out all as specified and directed by Engineer-in-Charge.

Returning filling in including spreading, levelling, watering and well ramming in layers not exc 25 cm in soils.

Removing excavated material from the site of work to outside MD land complete all as specified.

Supply, filling, spreading levelling and well ramming the river sand around cable in trenches for cable cushioning all as specified and directed. Note : Punned thickness shall be measured and paid.

Supply and laying un-reinforced precast concete cable covers class HV, Type 1, flat, size 300mmx 180mm x 40mm all as specified and directed.

Supply and laying un-reinforced precast concete cable covers class LV, Type 1, flat, size 250mmx 150mm x 40mm all as specified and directed.

Cutting existing road surface or hard standing, interlocking tiles, bituminous topping 15 cm but n exc 30cm girth for laying of pipes/ cables and making good distrubed surface to match with existing complete.

Material & labour for cement concrete 1:4:8 type D2 (using 40mm grade stone aggregate) as in foundations, filling and mass concrete finished fair and even comlpete all as specified

Material & labour for GI pipe, light grade 100mm dia for road crossing of cable or for cable protection of cable above ground surface all as specified and directed.

Material & labour for fixing of old interlocking paver tiles/blocks of any sizes recovered form item SI. No. 3 including laying over and including 50 mm thick sand bed compacted complete as specified and directed. Note- 1) Sand shall be measured and paid in the same item. 2) Punned thickness shall be measured and paid.

Providing and laying 60 mm thick factory made cement concrete interlocking paver block of M35 grade conforming to IS 15658-2006 made by block making machine with strong vibratory compaction, of approved size, design & shape, cast in rubber mould, glossy finish of approved colour, laid in required colour and pattern over and including 50 mm thick compacted bed of coarse sand, filling the joints with fine sand etc. all complete as per the direction of Engineer-in-charge. Note- 1) Sand shall be measured and paid in the same item. 2) Punned thickness shall be measured and paid.

Supply & fixing High density poly-ethylene pipes (HDPE) of pressure rating PN 6(0.6 Mpa), material grade PE 63, 100/110mm dia for road crossing of cable or for cable protection of cable above ground surface all as specified and directed.

Supply, installation, testing and commissioning of indoor type totally enclosed Vacuum Circuit Breaker suitable for 11KV, 400A, 250 MVA,18.4 KA(for 1 sec operation, equipped with CT, PT and protection relays horizontal isolation and horizontal drawn out cassette type and internal arc tested for 25KA for 0.1sec having IP 4X degree of manual/motarised spring charging mechanism. The auxilary voltage supply metering device/relay shall be 24V DC for breaker spring charging mechanism voltage will be 230V, AC. The VCB shall be comprising with following equipments:- (a) Vacuum circuit breaker suitable for 11 KV, 400A, 18.4KA operation. (b) Cast resin type dual core copper wound Current Transformer having 15 VA burden class 1.0 accuracy for metering core 5P10 for protection purpose (3 no with each VCB), having CT ratio 200/100/5A. (c) Drawn out 3 phase cast Resin copper wound Potential Transformer of ratio 11KV/110V having class 1.0 Accuracy, 100VA per phase capacity shall be mounted below the incomming breaker chamber. (d) Microprocessor based numeric relay with combined 3 O/C+ 1E/F having IDMT and instantaneous setting with communication and current measuring facility.

Notes to Item No 15.00 : (i) The contractor shall submit a preliminary drawing showing arrangement of panels, type of Relays etc for approval of GE. (ii) The Equipment shall be tested in the presence of representative of Accepting Officer for successful Routine tests as per IS before receipt at site at OEM premises. (iii) Commissioning tests will be carried out in the presence of Engr-in-Charge and Electrical Inspector of the Department. (iv) Panel manufacturer shall be OEM not their vender/system Houses. (v) The make of the relays shall be of AREVA/SCHNEIDER. (vi) Width of the panel shall not be more than 540mm. (vii) VCB shall be complying to "M1" & "E1" category of latest IEC. (viii) VCB shall confirm to IEC : 62271-100 & panel shall be confirm to IEC 62271. (ix) One No PT's and one No. power Pack shall be provided on VCB. (x) All busbars and incoming/outgoing terminals will be of tinned copper. (xi) Existing foundation shall be used however rates quoted shall be inclusive of making disturbed surfaces good. (xii) Cost of any arrangement as required at site for installation of new VCB with existing VCB and shifting of cable etc complete as directed by Engineer-in-Charge shall be deemed to be included in the quoted rate.

Supply and fixing cable jointing kit for 11 KV grade cable for in door termination, heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Aluminium conductor cable of size 185 sqmm complete as specified and directed.

Material & labour for earthing with copper earth plate electrode 600mm x 600mm x 3.15 mm burried directly in ground earth pit not less than 2.25 mtr deep below normal ground level with top edge of the plate vertically to a depth not less than 1.5 mtr below ground level connected to the connecting copper strip 20 x 3 mm and including GI pipe 40 mm dia light grade for protection to the extend of 7.5 mtr as earthing lead by means of copper nuts, bolts as per connecting to equipment with provn charcol and salt complete all as per electric plate No 5 of SSR Part-1 including PCC chamber with RCC cover watering arrangement with GI pipe 20 mm dia medium grade and MS funnel, including excavation and earth work and returning, filling in including ramming and removal of surplus soil and testing on completion complete all as specified and directed by the Engr-in- Charge.

Supply, installation, commissioning and testing of minimum capacity of 400 KVA 11KV/433Volt or next nearest higher capacity as per OEM design, prefabricated HV/LV Sub- Station, factory made, designed, tested and ready to install and fully conforming to IES- 62271-202 (IES 61330), outdoor type, IP-54, enclosure made with high quality pre-galvanised steel sheet 2mm thick for load bearing and 1.5mm thick for non-load bearing members, tropicalised to meet Indian weather conditions, including all the partition sheets & doors with base of the enclosure of 4mm thickness. with following below items, with and including cable ducting from RMU to transformer and transformer to LT panel and capacitor panel inside the Substation, with and including all civil foundation work all as per OEM/manufacturer's recommendations, lamination and power sockets inside the substation, necessary radium stickering work / danger notice board indication as per IS. complete all as per manufactureres instructions and all specified and directed by Engineer-in-charge. Prefabricated Sub station shall be consist of the following fittings

A) 11KV, SF6 Ring main Unit 3 way Complete with non extensible motorised operated, indoor 2 Nos 400 Amp load break switch as incomer & 1 No 400 Amp Vacuum circuit breaker as outgoing with self powered DPX relays. RMU shall be with STC 21 KA for 3 sec & with internal Arc of atleast 20 KA for 1 sec for both tank and cable box. RMU tank shall be made of 2mm thick stainless steel with manual TIG welding & with front cable termination, RMU coupling shall be from side only, complete all as specified and directed by Engineer-in-Charge.

B) Transformer double copper wound, step down, 11000/433 volts, oil type, minimum 400 KVA capacity or next nearest higher capacity as per OEM design, ONAN, Dyn 11, core type with copper conductor. Oil immersed ONAN suitable for Unitized substation housed in a enclosure with corrugated tank arrangement hermetically sealed. Transformer shall be provided with Off circuit Rotary type tap switch so as to provided for a voltage adjustment on H.V, from +5% to -5% (in step of 2.5%) of rated voltage of 11000 voits in 4 equal steps (5 position) to obtain rated voltage of 433 volts on LV side including cable box on LT and HT side , with 12 KV system highest voltage at HV side, 28 KV (rms) HV power frequency, 75 kVp HV impulse withstand voltage, trasnformer shall be designed for losses as per IS latest 1180 (amendmend No.4 Mar 2021 Part-1) Efficiency level II and for 110% continuous overfluxing withstand capaibility, complete with first fill of new transformer oil having dielectric strength not less than 60 KV, suitable mounting arrangement complete and other standard accesssories all as per latest IS specification.

(viii) Digital multifunction meter -01 set with RS 485 with LAN port hub complete with remote monitoring system with GPRS/GSM modem with SIM card and 2 year data charges complete fo monitoring all parameters such as Voltage/current/KW/ KVAh/KWh, PF frequency etc as per OEM design (ix) Control wiring shall be of minimum 2.5 sqmm PVC copper conductor cable with proper colour code. (x) The enclosure to be tested for Internal Arc fault test for atleast 20 KA for 1sec confirming to IEC 62271-202. The temperature rise test for enclosure K 10 class. Notes: (i) The Contractor shall submit technical specifications and General Arrangement drawings of OEM for approval before placing order. (ii)The Contractor shall make all necessary arrangements for pre-despatch inspection at manufacturer site for pre-commissioning test by rep of Accepting Officer after installation of Compact package sub-station. The cost for the same is deemed to be included in quoted rate.(iii) The quoted rate inclusive earth work for foundation, Cement concrete foundation as per OEM design, necessary T&P for transportation and installation complete.(iv) The quoted rate inclusive of supply of PSS of next nearest higher capacity as per OEM design without any extra cost.

Supplying and laying with commissioning and testing XLPE insulated, armoured heavy duty electric cable with aluminium conductor, 1100 volts grade of size 240 sqmm 3.5 core laid in trenches, passing through pipes, fixed on walls by proper clamping complete including connecting properly by means of thimbles/lugs and, cable glands etc all as directed by the Engr-in-Charge.

Ditto all as per Item No 19.00 above but size 150 Sq mm, 3.5 core

Material & labour for GI pipe, light grade 80 mm dia for road crossing of cable or for cable protection of cable above ground surface all as specified and directed.

Material & labour for High density poly-ethylene pipes (HDPE) of pressure rating PN 6(0.6 Mpa), material grade PE 63, 75mm dia for road crossing of cable or for cable protection of cable above ground surface all as specified and directed.

Material & labour for earthing complete with Galvanised steel earth plate eletrode 60cmx60cmx6mm thick buried directly in ground vertically to (earth pit not less than 2.25 meters deep below normal ground level) with top edge of plate not less than 1.5 meters below normal ground level, connecting to the Galvanised Iron Strip of size 32x6mm size, by means of Bolts, Nuts, Check Nuts and washer made of GI or Steel Earth connecting with test point, provision of Charcal and salt in alternate layers, watering pipe 20mm dia medium grade MS funnel with jali, PCC M-15 Type B-1 in pit with XPM not elss than 4Kg per Sqm and Earthpit with cover returning, filling, removing excavated material all as specified in electrical plate No 3 of SSR Part-I making good excavated surfaces such as hard standing refixing machine pressed precast concrete interlocking paver blocks removed during excavation on earthpit to mach existing surfaces after taking out old/unserviceable one complete and testing on completion all as specified and directed by Engr-in-Charge

Supply and fixing cable jointing kit for 11 KV grade cable for in door termination, heat shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Aluminium conductor cable of size 185 sqmm complete as specified and directed.

NOEL ENGINEERS

AGRAWAL ASSOCIATES

Shree Ayyappa Engineering