AUGMENTATION OF HT ELECTRIC SUPPLY TO DSC SINGLE LIVING ACCOMMODATION AT SITE E UNDER GE (SB) KARWAR

Amount

Supply, installation, testing and commissioning of Outdoor Vaccum Circuit breaker Consisting of VCB triple pole 630 amps having rupturing capacity 350 MVA, 25 KA for 3 seconds, horizontal isolation and horizontal draw out type 11 KV totally enclosed extensible pattem with automatic drop down and independent spring charging type motor operated closing mechanism including motor suitable for operation on 230 volt single phase 50 cycle AC supply system and manually operating system with 24 volt DC shunt trip coil with Auxiliary switches mechanical ON/OFF indicator with protective relays and conforming to IS: of 1991 and IS 3427 of 1997 complete all as specified with and including following items:- (a) 3 Nos vacuum interrupters of rating 11 KV, 3 phase 50 Hz. 630 Amps having rupturing capacity 350 MVA mounted on common base segregated Epoxy body for higher electrical insulation and to maintain pole discrepancy as per IEC 56 and self aligned type isolating contacts

(b) Self powered microprocessor controlled numeric relay comprising of two over current, one earth fault protection relay with high set for both phase and earth and with fault memory. universal auxiliary supply as per IS-3231, 8686 The setting for over current shall be 50-200% of 5A (in the step of 10%) and for earth fault element from 20-80% of 5A (in the step of 10%) Make ABB/SIEMENS/ L&T/ Crompton/Ashida (c) Current transformer(CT's) one set of three of ratio 50/25/5+5 Amps having 15 VA burden class 1.0, for metering and class 5P10 for protection- 01 Set of 03 Nos (d) Cast resin Potential transformer dry type having minimum 200 VA burden, ratio 11 KV/110V.

(i) Red/Green VCB ON-OFF Indication. (ii) AMBER : Trip Indication (iii) WHITE: Trip Circuit Healthy Indication with Push Button. (iv) BLUE : VCB Mechanism Spring charged Indication. (j) 11 kv, 350 MVA 800 Amps Three Phase busbars of aluminium with Rear cable termination ie, Provision for terminating 3 core 95 Sqmm, XLPE Cable. (k) 2 No. Strip heater- 100 W (continuously rated) with thermostat control for breaker/CT compartment with manual ON-OFF switch. (l) Structural steel frame including PCC foundation and earthwork as per manufacturer specifications. (m) 1 to 3 way breaker control switch with popsitions TRIP-NEUTRAL-CLOSE. (n) Manual charging/operating arrangement. (o) Fuses for metering and protection system.

(p) (i) Auto trip. (ii) Motor/manual charged spring operating/closing mechanism. (iii) Fault alarm (iv) Manual tripping (q) All wiring necessary for the above including interconnection to trip coil. The wire should be FRLS type in all panels. (r) Test Terminal Block (TTB) to test meters and relays with sealing arrangement.

NOTE:- 1. The HT panel comprising of VCB to be manufactured by OEM 2. Contractor shall produce manufacturer's test certificate for all routine and type test of VCB's 3. Rate quoted is deemed to be inclusive for above provisions and Civil works for foundation as per manual of manufacturer 4.Any spare/item required at site for functional of above VCB shall be done without any extra cost to the department 5.Auxillary supply voltage for thr Relay/Close/Trip coil 24 volt DC.

Supply, laying, testing and commissioning XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armored, earthed electric power cables (Heavy duty) aluminium conductor 11 KV Earthed grade suitable earthed system cross sectional area 95 Sqmm, 3 core HT UG Cable laid in trenches/through GI pipe /fixed along with pole complete all as specified and as directed. Note:- a) Excavation and earth work shall be measured and paid seperately under relevant items of schedule b) High voltage test to be conducted at site with suitable voltage after laying of HT cable and reading to be recoreded jointly and test report to be submitted in triplicate,the cost of the same is deemed to be included in unit rate of subject item. (c) The HT cable route indicator as specified by Engr-in- Charge is also included in the rate quoted.

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m depth for laying/taking out cable and getting out in soft/loose soil all as specified and as directed.

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

Removing excavated soil not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point all as specified and as directed.

Supply and laying of flexible DWC pipe of nominal diameter 63 mm under the ground and drawing the XLPE cable through the DWC pipe complete all as specified and as directed.

Supply & Laying in repair GI tubing light grade with necessary fittings as in cable protection in trenches/fixed on wall / floor including necessary clamps bolts and nuts complete all as specified and as directed of sizes 80mm dia

M&L for 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 95 sqmm.

M&L for 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 95 sqmm

M&L for earthing complete in repairs with galvanized steel earth plate electrode 600x600x6mm thick buried in ground vertical to a depth not less than 2.25 mtrs deep below ground level with top edge of plate not less than 1.5 mtr below normal ground level connected to galvanized GI strip of size 32 X 6 mm and 40 mm dia bore 7.5 mtr long light grade GI protection pipe for earth strip and GI watering pipe 40 mm dia medium grade from the top edge of earth plate fixed with deep cut on one end of pipe and fix from earth plate up to one feet above ground level of other end and plugged watering pipe at top with MS cap and grouted in PCC 1:2:4 of size 30 X 30 X 30 CM etc and 15 CM alternate layer of charcoal and salt around all sides of earth plate all as shown in electric plate no 3 of SSR part I of 2009. Note :- All joints either strip to strip of strip to earth plate are fixed with welded joints.

M & L for construction of Plinth of dimension 6 x 6 x 6 ft with foundation work providing PCC type B2 (1:3:6) with 40 mm graded for installing outdoor transformer of capacity 500 kVA.

JAI SHREE GOPAL ELECTRICALS (BID ID -3263981)

DURGAI ELECTRICALS (BID ID -3268310)

ANKIT SHIP REPAIRERS AND SUPPLIERS (BID ID -3267014)

AGRAWAL ASSOCIATES (BID ID -3268167)