PROVISION OF HT CABLE WITH CONNECTED ITEMS FOR RING MAIN SYSTEM AT CVD UNDER GE (U) ELECTRIC SUPPLY DELHI CANTT10

Amount

Excavation in trenches not exc. 1.5 m wide and not exc 1.5 mtr deep in soft/losse soil) for laying of cables or GI pipe and getting out and levelling of bottom suface to required level all as specified and directed by Engineer- in- Charge.

Material and labour for river washed and screened, dry sand for filling in trenches below and around underground cables for cushioning of cables etc, complete all as specified. Note : Measurement shall be taken after punning down.

Supplying and laying un-reinforced precast concrete cable cover, class HV,type 1 with peak, size 300mm x 180mm x 40mm all as specified and directed by Engineer-in-Charge.

Returning filling in,. Including spreading, levelling,. Watering and well ramming soil in layers not exceeding 25 cm thick all as specified and directed.

Removing excavated material (ie soil) from site to a distance n. exc 50 mtrs away and depositing where directed at a level n. exc. 1.5 mtr above the starting point all as specified and directed by Engineer-in-Charge.

Boring of hole under road/pavement/hard standing or any other situation by manual means and suitable for passing of HDPE pipe 100 mm bore (inner dia) and making good both ends all specified and directed.

Supply and fixing High density polyethylene pipes of size 100 mm dia (HDPE) of pressure rating 10 kg/cm2 laid in trenches/ducts/ bore holes of road crossing/hard standing etc for laying HT cable complete all as specified and directed by Engr In Charge.

Supply and lay GI pipe light grade as cable protection laid on trench/drain/ floor, fixed on pole/wall etc of size 100 mm dia all as specified.

Supplying, laying, testing and connecting XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable of size 120 sqmm 3 core (heavy duty) with multistranded aluminum conductors, 11 KV grade, IS 7098 (Part-2 ) marked, suitable for HT 11 KV(E) system, laid in trenches / ducts / encased in GI, HDPE pipe / fixed to pole, including jointing & testing complete all as specified and directed by Engr In Charge.

Supply and fix Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 120-150 sqmm 3 core XLPE armoured aluminium conductor cable complete all as specified and directed by Engr In Charge.

Supply and fix Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 120-150 sqmm 3 core XLPE armoured aluminium conductor cable complete all as specified and directed by Engr In Charge.

Supply and fix Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 120-150 sqmm 3 core XLPE armoured aluminium conductor cable complete all as specified and directed by Engr In Charge.

Supplying , installation, testing and commissioning of 11 KV, 630 Amps having short circuit capacity 21kA/3-sec, Outdoor (IP54), RMU (Ring main unit) 4 way, comprising of 02 Nos motorized operated Load Break Switch and 02 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 min 2.5 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 hinges, fully covering the front facia and cable boxes to ensure fail-safe anti-theft protection. The unit alongwith Bus-connected, fixed-type Auxiliary transformer shall include the following along with all necessary accessories and fittings as required at site.

(A) 02 Nos. Incoming Load Break Switch module each consisting of following accessories :- (i) Each switching-unit is designed as a three position switch. This three function switch combines the functions of switch-disconnector and earthing switch. (ii) 11kV, 630A Load Break Switch with interlocked line-earthing scheme both short circuit current - 21kA/3-sec, Making Capacity - 50kAp -01 No (iii) Auxiliary contacts - 1NO + 1NC-01 No (iv) Spring-assisted snap-action motorized mechanism with un-inhibited operating shaft for emergency manual operation with integrated earthing switch -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 , 120-185 Sqmm , 3 Core , XLPE AL cable termination in live-condition. Each Set of 03.

(vi) Right angle boots (push on type)-Each Set of 03 (vii) Arc proof cable covers having cable entry from bottom , front with Interlocking mechanism including earth switch -01 No (viii) Capacitive voltage indication fixed type system as per IEC61243 with LED - 01 Set (ix) Fault Passage Indicator - It is to be provided for each incomer load break unit, FPI with LED/digital display to be added for detection of cable fault-01 No (x) ON, OFF, EARTH mechanical indication on the front mimic of the panel - 01 No (B) 02 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) 11kV, 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 , 120-185 Sqmm , 3 Core, XLPE AL cable termination in live-condition. Each Set of 3 (vi) Right angle boots (push on type)-Each set of 3

(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 3)-02 Nos (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.

(C) 01 No. Bus-connected, fixed-type Auxiliary transformer to provide required aux. supply and metering consisting of following accessories :- (i) 1-Ph (11kV/rt3):230VAC, 500VA Auxiliary transformer-01 No (ii) 2 x12 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) Indications to confirm AC/DC supply availability-01 Set (vi) Anti-condensation space-heater-01 No (vii) CFL lamp for illumination and 3-pin socket with switch -01 No (viii) 1 x Master trip relay, Auxliary relay for transformer protection -01 Nos with TAFU Card.

(D) 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

Note:- (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) Danger Plate for 11 KV should be provided. (v) All the incoming and outging feeders should be marked by FLOURCENT REFELCTIVE LETTERING as approved colours, in capital letters of size not less than 35 mm width and 40 mm height . (vi) Cost of provn of plinth for RMU as per OEM drawing is deemed to be included in the cost.

Supply, installing, testing and commissioning of factory made and tested HT Panel board, size: 1200 mm x 1200 mm x 900 mm ,cubical compartmentalized , out door type double door, suitable for 11000 Volts, 3 phase, 50 HZ AC supply system having bus bar chamber with insulated aluminium bus bars of size ,50 mm x 10 mm, 3 Nos installed on SMC insulators suitable for 11000 Volts .The panel shall be dust and vermin proof. IP-65 class protection and shall be made of 3.15 mm CRCA MS sheet, and 50x 50 x 6mm thick MS angle iron frame work, powder coated front and rear opening type, with apron for cable entry closing locking . The fixing of double doors shall be on MS hinges with anti-theft provision (the door can’t be removed from enclosure without cutting enclosure). including excavation, earth work and platform for the panel with PCC 1:4:8 type D-2 with 40 mm graded crushed stone, 15 cm thick in foundation, brick work in CM 1:6 with sub class 'B', old size bricks, rendering 15 mm thick in CM 1:6 on exposed surfaces and 100 mm thick PCC padding 1:3:6, type C-1 using 20 mm graded crushed sotne aggregate on top and grouting bolts etc for panel. The platform shall be such that it is of a height 45 cm above the nearest road level complete all as specified and directed by Engr-in-charge.

Supply and fix air break switch gang operated tripple pole mechanically operated mechanism, switch air break gang operated mounted on 15 Nos insulator and steel frame with operating rod of 25 mm bore GI Pipe medium grade and locking arrangements worked from ground level for current rating 400 Amps, HT 11 KV grade including drop out fuses and necessary silver coper coating jumpers and making all electrical connections complete.

Supply and fixing Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers,welding, bending cold or hot,drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of aluminium paint on 4/6 pole 11 KV HT structure .

Earthing complete with galvanised steel earth plate electrode 60 cm x60 cm x 6 mm thick buried directly in ground ,Earth pit not less than 2.25 meter deep below ground level) with top edge of plate not less than 1.5 meter below normal ground level ,connected to and including galvanised iron earth wire 25 X 6 mm by means of nut, bolts, check nuts and washers of galvanised iron or steel and provision of charcoal dust and common salt packed all around the earth plate including necessary excavation and earth work in soft/loose soil and testing complete all as specified and directed and shown in electrical plate number 3 of MES SSR part-I (2009) (a) Excavation and earth work for electrode in soft/loose Soil. (b) PCC pit in cement concrete 1:2:4 type B-1, Pre cast RCC cover with suitable handle 40 mm thick in PCC 1:2:4 type B-1, reinforced with welded steel wire . (c) Funnel with watering pipe of GI 20 mm nominal bore light grade and lugs etc complete all as specified and directed (d) 40 mm nominal bore medium grade GI protection pipe for protection of earthing lead complete all as specified and directed. (e) Requisite quantity of common salt and charcoal. (f) Testing of earthing.

Supply and fix cable route indicator made of RCC (nominal mix) type B-0 1:2:4 (12.5mm graded aggregate) with TMT bar 8 mm dia at 150 mm c/c both ways of size 100 cm height X 60 cm wide X 10 cm thick tapered on top, visible above ground , duely painted with synthetic enmel paint of yellow colour base and letters with black paint. The description for writing for HT cable 11000 Volts complete all as specied and directed by Engr -in -charge .

Excavation in post holes (for similar holes) each n exc 0.5 cum soft/loose soil and getting out, returning, in and ramming earth or broken rubble mixed with earth around in layers not exceeding 25cm, watering and removing surplus soil to a distance n exc 50 m and making good surface.

M&L PCC 1:3:6 (type C2) using 40 mm graded stone aggregate as in foundation filling and mass concrete complete all as specied and directed by Engr -in -charge ..

Supply only chain link MS galvanised fencing any size or type including provision of binding wire complete all as specied and directed by Engr -in -charge ..

Fixing only chain link fencing including line wires, any mesh, size and type to any type of standards, rails, straining bolts, etc including provisition of binding wire

S&F framed bracket of angles or tees with web and flanges cut to shape, drilled and countersunk for screw, including bending and welding angles as necessary gusset plates, riveting etc as in fencing post including cutting tops to shape as directed, drilling holes, notching for wire etc.

M&L for preparation of new steel surfaces of any description, over 10 cm width or girth, not otherwise described and applying two coats of synthetic enamel paint over a coat of red oxide primer

M&L for preparation of new steel surfaces of any description, n. exc. 10 cm in width or girth, not otherwise described and applying two coats of synthetic enamel paint over a coat of red oxide primer

Surface dressing n exc 15 cm deep for loose/soft soil etc as directed.

Material and labour for hardcore of gauge n exc 63 mm , deposited , spread and leveled in layers n exc 15 cm thick, watered and rammed to a true surface with broken stone or boulders complete all as specified .

Material & labour for PCC 1:3:6 type C-1 using 20 mm graded stone aggregate . in mass concrete and filling complete for foundation of Panel & Transformer yeard, pole/stay/ of pole all as specified & directed by Enge-in- Charge.

Dismantling of HT concrete pole and depositing in low line area complete all as specified and directed by Engineer-in-charge.

Dismantling of cross Arms of MS channel or Angle iron or flat iron sections from pole complete all as specified and directed by Engineer-in-charge.

Dismantling of insulators of any type and size complete all as specified and directed by Engineer-in-charge.

Dismantling air break gang operated switches vertical/horizontal mounted including insulators and operating mechanism complete all as specified and directed by Engineer-in-charge..

S&F for Danger Notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white , with letters, figures and conventional skull and bobes in signal red colour and fixed with MS clamps, bolts and nuts of approved size, for HT, 25x20 cm size including taking down old one complete all as specified and directed.

NOTE :-(i)contractor should provide 50 % of the material as listed above within 15 days of the placing of work order and shall be verified by the Eng-in-charge.

Ridhi engineers and builders

INDIAN CONSTRUCTION CO.

Rajindera Enterprises

M/s JAIMAA ASSOCIATES

MV Engineers And Contractors

Vijay Electricals