CA NO CWE/PM/SP-08/20202-21

Amount

M&L for taking out existing transformer from AFGJI sub station of capacity 200 KVA and kept to E/M yard using suitable T&P and vehicle without damaging the transformer including removing HT and LT cable connection, earthing strips etc complete, all as specified and directed by Engineer-in-Charge.

Supply, testing, installation and commissioning of copper wound step down transformer, in door type complete with stranded fittings, HT, 11 KV, 3 phase, LT, 433 V, 3 phase, 4 wire with off load tapings on Primary side to vary secondary voltage + 7.5% with tapings at every 2.5% rating of capacity 400 KVA level 3 including bushing on HT side and LT side all as per IS-1180 complete, all as specified and directed by Engineer-in-Charge. NOTES : this item includes the following accessories and materials:- (a) Three Nos porcelain bushings HT 11 KV with brass bushing rods nuts and washers inside cable end box with cover complete. (b) One cable box LV side consisting of four Nos porcelain with brass bushing rods complete with nuts and washers with one No cable gland suitable for 3.5 core 500 sqmm LT under ground cable.

(c) Oil conservator tank with filler type drain valve and oil level gauge. (d) Dehydrating breather with first fill of dehydrating agent(silica gel). (e) Explosion vents. (f) Thermometer pocket with thermometer on tank cover. (g) Rating plate and terminal marking plate. (h) The earthing terminal two Nos to facilitate fixing of earth strip. (j) Oil filling hole with cap/plug with connection plate complete. (k) Air relief valve plug. (l) Initial filling to transformer oil up to required level. (The Quoted Rate for this item is deemed to be included for Item (a) to (l).

M&L for taking out existing OCB from AFGJI sub station room and kept beside to E/M yard using suitable T&P and vehicle without damaging the OCB's including removing HT cable connection, earthing strips etc including making good the disturb surface of the sub station complete, all as specified and directed by Engineer-in-Charge.

Supply, testing, installation and commissioning of 11 KV,totally enclosed incoming and out going 400A, 50Hz, 21KA/3 Sec, drawout type powder coated factory fabricated insulated , both side extensible indoor compact Vacuum circuit breaker panel, 3 phase switch gear cubical type of modular design with partition on frames between panel, floor mounting having the extendable busbars from TOP of the switchgear only , totally metal enclosed, indoor switchgear with access to the switchgear and cable compartment from rear side and the cable entry from bottom complete with the arc proof cable compartment doors and as incomer, and out going 01 No Vacuum Circuit breaker one common bus bar having IP-65 degree of protection with following bill of material including insulating HT mat, battery backup conforming to IS : 13118 of 1991 and IS 3427 of 1997 complete all as specified and directed by Engineer-in-Charge with and including following items:- Make ABB/SEIMENS/SCHNEIDER

INCOMING AND OUTGOING:- Vaccum circuit breaker consisting of VCB triple pole 400 Amps system breaking capacity 25/26.2 KA for 3 second, repturing capacity 250 MVA ,vertical isolation and horizontal draw out type 11 KV totally enclosed extensible pattern 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 30 volt DC shunt trip coil with anxilary switches, mechanical ON/OFF indicator with protective relays and conforming to IS 13118 of 1991 and IS 3427 of 1997 complete all as specified with and including following items:- (i) Current transformer (CTs) one (set of three ) of ratio 400/200/5+5 Amp having 15 VA burden class 1.0 for metering and class SP 10 for protection with Air insulated CT's chamber.

(ii) Three phase horizontal draw out 11 KV/110 Volts dry type potential transofrmer (PT) mounting in drawable housing connected to bus bar of class "B" accuracy one burden 200 VA class 1 per phase complete with current limiting resistor and HT and LT HRC fuse or slide lock fuse-01 set. (iii) High torque, low burden ( not less than 3 VA) and low over shoot triple IDMT non directional relay electronic type suitable for 5 Amps current rating and having two over current and one earth fault elements with over current ranges of 50 to 200% in steps of 10% and earth fault range of 5 to 80% in steps of 5% with time multiplier setting 0.1 to 1.0 in steps of 0.01 )(separate for over current & earth fault) and time setting of 3 seconds corresponding to 10 times of current setting and accuracy class of + 5% conforming to IS: 3231 of 1965 suitable for auxilary supply of 110 Volt AC and housed on hrozontal draw out type flush paattern case self powdered with protection accessories duly connected with trip and alam system -01 Set.

Supply, installation, testing and commissioning factory made and tested (CPRI approved) LT Panel box in door type platform mounted suitable for 415 volt ,3 phase , 4 wire 50 cycle, AC supply system having bus bar chamber with insulated Copper bus bar 1200 Amps rating installed on porcelain insulators. The panel shall be dust and vermin proof IP 65 class protection and made out of 2.00 mm CRCA MS sheet and 50 mm x 50 mm x 6 mm thick angle iron frame work for base, powder coated finish over one cubical type, machine pressed weather proof spray painted from inside and out side with two coats of approved paint over red oxide primer, front opening type with Apron for cable entering with double door shutter and locking arrangements (including provn of 6.5 mm godrej (freedom) lock with keys. Internal wiring with PVC insulated, stranded copper conductor FRLS cable IS - 694 marked on adequate size but not less than 6 sq mm .The scope of work including the following accessories :-

Notes :- i) Connection of input and outgoing cables and complete wiring of LT switch gears with pre insulated copper conductor of suitable size by using copper thimbles testing and commissioning complete . ii) P.C.C 1:4:8 type D 2 [using 40 mm graded stone aggregate] as in foundation for panel including foundation bolts and grouting etc and fixing panel board with foundation complete. iii) Contractor shall submit the design of the panel alongwith accessories for approval before fabrication. INCOMING (a) ACB 630 Amps, Microprocessor Based SR18G, 4 pole, 50KA, Version:EDO Adjustable type- 1 No. (b) Digital type multi function meter with LCD display suitable for measuring current voltage, power factor, KWH, KVA, KVAr, frequency & maximum demand with CT of suitable ratio complete. (c) Indicator lamp neon/LED type (set of three ).

OUT GOING (a) MCCB 315 Amps, 4 pole, 36 KA adjustable type - 02 Nos. (b) MCCB 160 Amps, 4 pole, 36 KA adjustable type - 02 Nos. (c) MCCB 63 Amps, 4 pole, 16 KA adjustable type - 02 Nos.

M&L for earthing complete with copper earth plate electrode 60cm x 60cm x 3.15 mm thick buried directly in ground (earth pit not less than 2.25 m below ground level) with top edge of earth plate not less than 1.5 m below deep ground level connected to copper earth strip 25 x 4 mm as earth lead by means of nuts, bolts. thimbles, check nuts, washers of GI or steel, including PCC (concrete chamber) internal dia 300 mm x 300mm x 300 mm shall be PCC I:3:6 type C-I (using 20mm graded stone aggregate) with fair finish internal surface of concrete chamber shall be given 15mm thick plaster in CM I:4, funnel with wire gauge mesh, 80 mm thick RCC pit cover 320 mm x 320 mm of RCC I:2:4 type B-1 (using 20 mm graded stone aggregate) reinforced with XPM, Jalli and charcoal dust and common salt all as shown in electrical plate No 3 of MES SSR Part-I (2009) including GI wire protected by 40 mm dia medium grade GI pipe and water pipe shall be 20 mm dia medium grade GI pipe including all necessary excavation & earth work and connecting to earth test point/LT Panel/Main switch/Plan/ Equipment/ Masonry/MCB DB and testing on completion of work complete all as specified and directed by Engineer-in-Charge.

Note: 1. RCC pit cover shall be precast of RCC 1:2:4, type B-1(20 mm graded stone aggregate) 80 mm thick reinforced XPM watering test less than 4 Kg/Sqm in lieu of Cl cover. 2. Copper earth strip upto 7.5 Mtr is deemed to be included in the quoted rate and beyond 7.5 mtr will be measured and paid seperately under relevant items.

Earthing complete with galvanised steel earth plate electrode 60 cm x 60 cm x 6mm thick burried directly in ground vertically to a depth not less than 2.25 metre below ground level with top edge of earth plate at a depth of not less than 1.5 metre below ground level, earth plate surrounded by 15cm thick and packed layer of charcoal dust and common salt, connected to galvanised iron earth strip 25x4mm thick fixed by means of thimbles, bolts, nuts and washers of the earth wire galvanised iron or steel and thimbles and other end of the earth wire connected to earthing test point and protected by galvanised iron pipe light grade 40mm dia upto 3m height above ground level and water pipe 20mm dia GI medium grade with socket and plug 30 cm above ground level including earthwork, PCC chamber in PCC (1:3:6) type C-2 using 40mm stone aggregate, cast iron cover, wire meah etc all as shown in electrical plate No. 3 of MES Schedule Part-I of SSR-2009 complete, all as specified and direcrted by Engineer-in-Charge Notes :- (i) 20 mm dia GI pipe medium grade for watering to be provided with a socket and plug and should be 30 cms above ground level. (ii) GI strip connecting upto pump,Gen set,LT panel and DBs earth connection is included in this item. (iii) GI pipe 40 mm dia light grade protection pipe shall be provided upto Ground level.

Supply, lay and connect XLPE insulated, armoured heavy duty electric cable 240 Sqmm 3.5 core cross sectional area with aluminium conductor,1100V grade, confirming to IS 7098(Part 1) 1988, in trenches/ducts/poles /pipes/walls etc complete all as specified and directed by Engineer-in-Charge.

(e) MCB "C" curve type with rupturing capacity 10 KA of appropriate rating for protection of individual capacitor bank confirming to IS 8828, IEC 898. Make : Hager/Legrand/ABB/C &S. (f) MCCB 4 pole 415 volts of appropriate current rating with rupturing capacity 50 KA as incomer confirming to IS 13947 Part 2, IEC 947 2, Make : L&T D Sine/Legrand/ABB. (g) Inductor coils of appropriate rating alongwith each capacitor bank to minimize inrush current. (h) Ventilating fans of required size to dissipate the heat liberated by capacitor units complete with automatic switching ON and OFF of fans depending upon the temperature of the panel. (j) Bus bar of appropriate rating for incoming and out going connections suitable to withstand short circuit current of 50 KA made of copper mounted on SMC silicon free, Chlorine freepost insulators and arranged in such a way that the joints are minimum. (k) Emergency stop push button to disconnect the unit in case of emergency.

(l) Indicator LED type for phase indication and capacitor banks ON and OFF indication, Make : L&T/C & S/AE. (m) Current transformer 01 set of appropriate rating for operation of APFC relay complete with control wiring. Make of CT : L&T/AE. (n) All accessories prewired with suitable size copper conductor cable insulated with fiber glass insulation to with stand high temperature, housed in cubical panel (CPRI approved) made out of 1.6 mm thick MS sheet factory made duly powder coated front and rear door openable with locking arrangement complete with foundation as required or recomended by manufacturer.

M/S MG GROUP

Ridhi engineers and builders

MV Engineers And Contractors

TUSHAR ASSOCIATES

V.K. Enterprises

Shiv Enterprises