PROVN OF HT SWITCH GEAR FOR BASE OPS AND 955 SQN

Amount

Demolition of PCC as in path /concrete in ground floors and pavings n exc 15 cm thickness (below or above ground level) complete all as specified and as directed.

M/L for plain cement concrete type B-2, 1:2:4 (40mm graded aggregate) 150mm thick complete finished even and smooth without using extra cement complete all as specified and as directed.

Surface dressing n exc 15 cm deep in any type of soil complete all as directed by Engineer in Charge.

Excavation in trenches, not exc 1.5m wide and n exc 1.5 m in depth for foundation, etc or for shafts, wells, cesspits, manhole, pier holes, etc and getting out in any type of soil all as directed by Engineer in Charge.

M&L hardcore (broken stone of boulder) of guage 2 exc 63mm, deposited, spread and levelled in layers n exc 15cm thick, watered and rammed to a true surface all as directed by Engineer in Charge.

M&L for plain cement concrete 1:4:8 type D2 (using 40mm graded aggregate) as in foundation, filling and mass concrete all as directed by Engineer in Charge.

M&L for providing precast cement concrete 1:3:6 block masonary with solid blocks, exc 10cm in widh and setting in cement mortar 1:6 complete all as specified and as directed by Engineer in Charge.

Returning, filling in including spreading, levelling, watering and well ramming layer not exc 25 cm in soft/loose soil complete all as specified and directed.

Removing surplus excavated soil to a distance n.exc. 50 metre and depositing where directed at a level n.exc.1.5 metre high from the starting point all as directed by Engineer in Charge.

S&F steel work in tabular truss including special shaped washer etc complete using ERW or induction butt welded tubes confirming to IS-1161-1979 of grade St-240 complete all as specified and as directed.

S&F plates (plain or chequered) channels, square, cut or notched (ordinary and counter sunk) forming holes without any attachment of Fe-410-W (Grade-250) quality B complete all as specified and as directed.

S&F mild steel works such as wind ties for roof including securing with bolts etc and similar work using rolled section confirming to Fe-290 Gde E-165 complete all as specified and as directed.

M & L for Pre painted galvalume aluminium zinc coating GI based semi corrugated steel sheet 0.50mm thick of an colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws complete all as specified and as directed.

M&L for preparation of new painted steel surfaces of any description not otherwise described over 10cm in width or girth and applying two coats of synthetic enamel paint over one coat of red oxide primer complete all as specified and as directed.

M&L for 75mm thick PCC 1:3:6 type B2 as in finishing cement concrete surface even and smooth with out using extra cement all as directed by Engineer in Charge.

M&L for rendering 15mm thick cement plaster in CM 1:4 on fair faces of brick work or concrete surfaces and finishing the surface even and smooth (without using extra cement) all as directed by Engineer in Charge.

S&F Mild steel screw bolts (machine made) 5 to 10mm dia of shank with hexagonal or square heads at one and screwed the other, or screwed both ends, each screwed end to be fitted with washers and one hexagonal or squarae nut, n exc 5cm long all as directed by Engineer in Charge.

Forming construction joint 30mm deep x 10mm wide filled with sealing compound of grade 'A' all as directed by Engineer in Charge.

Excavation in post holes (or similar holes) each n exc 0.50 cum getting out, returning, filling in any ramming earth or broken rubble mixed with earth around, in layers not exceding 25 cm any type of soil.

M&L for prepring new plastered surface of wall and applying two coats of cement base paint on over one of primer complete all as specified

Supply, laying, testing and commissioning Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm all as specified & directed by Engineer in Charge.

Supply, laying, testing and commissioning Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm all as specified & directed by Engineer in Charge..

Supply and Fixing XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavyduty) with aluminium conductor, 11000 volts, grade 3 cross sectional area 95 sq. mm all as specified & directed by Engineer in Charge.

Supplying, installation, testing and commissioning of 11 KV, 630 Amps having short circuit capacity 20kA/3-sec, indoor (IP54), RMU (Ring Main Unit) 4-way comprising of 02 Nos manually operated Load Break Switches and 02 Nos 630 Amp Fixed-Type spring-charging VCBs, electrolytic grade copper bus bars all inside single, gas-filled, robotically welded stainless steel 304 (Non Ferrite Non Magnetic Grade) tank with minimum thickness 3+0.5 mm, IP 67 Degree of Protection, internal-arc classified 20kA/1sec as per IEC62271-200, on-site-repairable with site replaceable bushing/coupling/mechanism, gas refilling etc. The enclosure shall have pad lockable double-door access with anti-theft hinges, fully covering the front facia and cable boxes to ensure fail-safe anti-theft protection. The unit shall include the following along with all necessary accessories and fittings as required at site.

(A) 02 Nos Incoming Load Break Switches module each consisting of following accessories :- (i) Each switching-unit shall be 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 - 20kA/3-sec, Making Capacity 50kA - 01 No (iii) Auxiliary contacts 1NO + 1NC - 01 No (iv) Spring-assisted snap-action manual mechanism with un-inhibited operating shaft for emergency manual operation with integrated earthing switch - 01 No (v) Cable terminals (site replaceable 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 , 300 Sqmm , 3 Core , XLPE 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 shall 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 - 20kA/3-sec, Making Capacity - 50kAp - 01 No (iii) Aux. contacts 1NO+1NC - 01 No (iv) Stored-energy manual high-endurance spring charging mechanism (M1+), with inbuilt spring-charging lever and mechanically latched ON/OFF push-buttons to allow un-inhibited operation -01 No (v) Cable terminals (site replaceable 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, 185 Sqmm, 3 Core, XLPE cable termination in live-condition - Set of 3 (vi) Right angle boots (push on type) - Set of 3 (vii) Associated ring-core cast-resin insulated CTs 50/1 Amp 2.5 VA, 5P10 for protection – Each Set of 3 (vii) O/C + 1E/F self powered numerical protection relay with Low and High set for over current and Earth Fault. Relay shall have the facility to display the maximum loaded phase current also. Relay shall record minimum 5 fault records with time stamping and shall be communicable on MODBUS. (viii) Arc proof cable covers with self Interlocking mechanism with earth switch -01 No (ix) Capacitive voltage indication fixed type system as per IEC61243 with LED -01 No (x) Mechanically latched buttons for breaker On/Off - 01Set (xi) ON, OFF, TRIP mechanical indication on the front mimic of the panel.

(C) Additional equipment delivered separately or mounted separately :- (i) Operating 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

Supply and laying double wall corrugated pipe (DWC) conforming of size 180mm outer dia and 152 mm inner dia complete all as specified and as directed

M&L for earthing complete with GI earth plate electrode of size 600mx600mmx6 mm, buried directly in ground (earth pit not less than 2.25 mtr deep below normal ground level) with top edge of earth plate not less than 1.5 mtr deep below normal ground level, connected to GI earth strip 25x4 mm by by means of bolts, nuts, check nuts and washers of GI or steel and copper earth strip and connected to earthing test point / distribution board/equipments or any other indicated situation all as shown in electrical plate No 3 of SSR Part I (2009) and testing on completion including necessary excavation in any type of soil, returning filling, removing of soil and 1.5 mtr length GI medium grade 20mm dia pipe with funnal and wire mesh, PCC chamber of 1:2:4 type B1 using 20 mm grade stone aggregate, 40 mm thick RCC 1:2:4 type B1 using 20mm graded stone aggregate and reinforced with 8mm dia TMT bars at 150mm c/c on both ways pre cast chamber cover with lifiting handle 16mm dia round bars, Gi pipe medium grade 40 mm dia for earth strip protaction including charcol, common salt complete all as specified and directed. (Note:- GI earth strip above to 7.5 mtr long shall be measured and paid separetly)

M/S TANISHA ENTERPRISES

Sree Tirumala Enterprises

Gulmarg Electrical Service

CS CONSTRUCTION

M/s Power Engineering Co

SB ENTERPRISE

KML CONSTRUCTION