AUGMENTATION OF HT INFRASTRUCTURE NETWORK AT PIRU VIHAR IN THE AREA OF AGE U E S NO 1 UNDER GE UTILITY ELECTRIC SUPPLY DELHI CANTT10

Amount

Excavation in trenches not exc. 1.5 m wide and not exc 1.5 mtr deep in soft loose soil for laying / taking up/ taking down of cables and getting out and levelling of bottom suface to required level complete all as specified and directed by Engg- in- Charge.

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

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 complete all as specified and directed by Engg- in- Charge.

M&L 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 and directed by Engg- in- Charge.

Supply & laying non-reinforced precast concrete cable (PCC) cover class HV type 1 with peak size 300 mm x 180mm x 40mm in trenches for protection to under ground cable complete all as specified and directed by Engg- in- Charge.

Supplying, laying, jointing, testing and connecting XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) 120sqmm 3core with multistranded aluminum conductors, 11 KV grade, IS 7098 marked, suitable for HT 11 KV (E) system, laid in trenches / ducts / encased in GI or HDPE pipe / fixed to pole, complete all as specified and directed by Engg- in- Charge. Note :- Excavation, earth work ,cable protection, sand fillings, cable joint shall be measured and paid separately under respective items of schedule.

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, SF-6 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 higes, 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) 3 O/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 (As per site reqmt), 2.5 VA, 10P10 for protection (Each Set of 3) - 03 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) 01 x digital Ammeter (Acc cl 0.5)-03 Nos (viii) 3 x Master trip relay, Auxliary relay for transformer protection -03 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 (Earth work and PCC work) for RMU as per OEM drawing is deemed to be included in the quoted rates.

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 150 mm dia suitable for 0.6 mpa working pressure complete all as specified and directed by Engg- in- Charge.

M&L for cable route indicator made of RCC (Nominal Mix) type B0 1:2:4 (12.5mm graded stone aggregate) with 8mm TMT Bar laid at 150mm c/c with overall size 1m height X 60cm wide X 10cm thick tapered on top, visible above ground, duly painted with synthetic enamel paint of yellow colour base and letters with black paint including writing for HT cable 33 /11KV complete all as specified and directed by Engg- in- Charge. Note :- Rate for PCC 1:3:6 for foundation (min size 0.8m x0.3m x0.3m) of aggregate size 20mm including necessary excavation & earthwork for cable route indicator shall be deemed to be included in the quoted rates.

Supply and laying of HDPE pipe of size 150mm bore suitable for 4 kgf/cm2 working pressurewith all fitting, laid in trenches for protection of cable or in road /drain crossing etc complete all as specified and directed by Engg- in- Charge.

S&F Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed by the Engg-in-Charge.

S&F 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 120 sqmm to 185 sqmm complete all as specified and directed by the Engg-in-Charge.

M&L for Earthing complete with galvanized steel earth plate electrode of size 60cmx60cmx6 mm thick, buried directly in ground (earth pit not less than 2.25 m below normal ground level) with top edge of earth plate not less than 1.5m below normal ground level, connected to galvanized iron strip of size 32 x6 mm as earth lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel as shown in electrical plate No 3 of SSR Part I, connected to earth test point and the equipment on the other nuts and washers of galvanised ironside complete all as specified and directed by the Engg-in-Charge, including testing and commissioning. Note : (a) The unit rates quoted against this item shall be deemed to include the cost of excavation and earth work in any type of soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 as in pit, precast RCC 1:2:4 type B-1 with necessary reinforcement as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 15 mm bore GI pipe medium grade etc. (b) The quoted rates shall also deemed to include the cost of earth test point and earth strip/GI lead wire and protection pipe upto 7.5 meter beyond the earth plates electrode.

Note : contractor should procure and 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

M/s JAIMAA ASSOCIATES

Commercial Traders

Ridhi engineers and builders

mayur enterprises

MV Engineers And Contractors

Rajindera Enterprises

Vijay Electricals