PROVISION OF ADDITIONAL POWER REQUIREMENT AT VTF BUILDING AT NSTL, VISAKHAPATNAM

Amount

Dismantling / removing the existing transformer of capacity 500 KVA from site carefully after disconnecting all electrical connections from primary & secondary side of transformer and deposite to MES storeyard complete all as specified and directed Engineer-in-Charge.

Supply, install, testing & commissioning of 630 KVA step down outdoor type transformer complete with standard fittings HT 11 KV, LT 433 volts 3 phase 4 wire system with copper wound and off load tapings on HT side to vary secondary voltage +5% to -10% @ 2.5% (6 Steps/7 Positions) in step by step continuous rating, cable termination box type on LT side of capacity all as per 1180 (Part-I) : 2014 Energy Efficiency Level-2 (Amendment-4) and equipped with following: - (a) Rating of Transformer 630 KVA (b) Voltage ratio 11 KV/.433 KV (c) Winding material super enamelled copper (d) Ref standard IS:1180 (Part I) : 2014 Ammendment No. 04. (e) Energy Efficiency level: LEVEL 2, ISI marked, BIS License No. (f) Phase: 3 Phase (g) Service: Outdoor type (h) Mounting: Plinth

(j) Wound: Double (k) Temperature rise in oil: 40 degree Centigrade (l) By resistance: 45 degree Centigrade (m) Ambient temperature; 50 degree Centigrade (n) Winding material: Copper (o) Type of cooling: ONAN (p) Class of insulation: Class A (q) Vector group: Dyn11 (r) Frequency: 50Hz (s) Insulation level HV (KVp/KV rms): 75/28 (t) Insulation level LV (KVp/KV rms): /3 (u) Tapping on HV side for giving voltage variation of HV: +5% to -10% @ 2.5% (6 Steps/7 Positions)

(v) Type of tap changer: Off circuit tap switch (w) Termination (HV/LV/Orientation): cable box / cable box / 180 degree (x) Total losses at 50% load: 1.745 KW (max) Level-2 (y) Total losses at 100% load: 4.850 KW (max) Level-2 (z) Impedance at rated current: 4.5% (IS Tolerance) (aa) Paint: Polyurethane Shade 631 of IS-5 (ab) Primary / Secondary Connections: Delta / Star (ac) First fill of maint free transformer Green Oil (ad) Bushings HV porcelain 03 Nos & LV Epoxy bushings 04 Nos.

(ae) Gas actuated Bucholz relay with Alarm & trip contacts-01 No. (af) Dehydrating breather with first fill of dehydrating agent (Silica gel) (ag) Standard fittings & accessories Stem Type OTI, Prismatic Oil level Gauge, Top Oil filter valve, Inspection Cover, Bottom Oil filter cum drain valve, Air release Plug, Conservator with oil filling cap and drain plug, Explosive Vent with Diaphragm & Equalizer Pipe, Flat Rollers, Earthing Terminals, lifting lugs, Rating & Diagram Plate.

Note: (i) Rate quoted shall be deemed to include the cost of necessary earth work, foundation / platform for transformer mounting as per OEM recommendations. (ii) Transformer drawing should be approved by Engineer-in-Charge / Accepting Officer before placing order. (iii) Rate quoted shall be deemed to include the cost of chain link fencing of 5 feet height & suitable thickness around the transformer platform 2 mtrs distance of all the four sides & 40 mm aggregate around transformer platform complete all as specified and directed by Engineer-in-Charge.

Supply, laying & connecting XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminum conductor, 11000 volts grade cross sectional area 120 sqmm 3 core (earthed) laid in ducts / wall / cable tray / trenches with suitable size complete all as specified and directed.

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 aluminum conductor cable of size 120 sqmm complete all as specified and directed.

M&L for cable jointing kit for 11 KV (earthed) grade cable for straight though joint heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminum conductor cable of size 120sqmm complete all as specified and directed.

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 240 sq mm 3.5 core complete all as specified and directed.

Excavation in trenches not exceeding 1.5 mtr wide and not exceeding 1.5 mtr in depth including taking down old cable in soft / hard dense soil complete all as specified and directed.

Returning filling in including spreading, levelling, watering and well ramming in layers not exceeding 25 cm in thick complete all as specified and directed.

Removing excavated material to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified by the Engineer-in-Charge.

Supply & laying, un-reinforced precast concrete cable cover Class LV type I, size 250 x 150 x 40mm complete all as specified and directed.

Supply & laying, un-reinforced precast concrete cable cover class HV type II, size 300 x 180 x 40mm complete all as specified and directed.

M&L for dry sand cushioning to under ground cable intrenches including spreading, levelling and hand punning complete all as specified and directed. Note :- Punned thickness shall only be considered for payment purpose.

Cutting trench of width 30cm and depth not exceeding 60cm through road / hard standing for laying cable through GI pipe and returning, filling in including spreading leveling watering and well ramming in layers not exceeding 25cm after laying the cable complete all as specified and directed.

M&L for cement concrete (1:2:4) type B2 (using 40mm graded stone aggregate) as in foundations, filling and mass concrete complete all as specified and directed.

GI tubing light grade 150 mm for cable protection, laid under plinths / floors / roads / paths / culverts or fixed on walls or concealed in walls or along the steel poles by means of M.S.F.I clamps with necessary bolts nuts & washers etc complete all as specified and directed.

Supply, installation, testing & commissioning of OEM approved 300 KVAR APFC panel with relay six step, auto / manual operation suitable for improving PF upto unity using super heavy duty MD XL capacitor, 440 volts, outdoor type, floor mounting with suitable size of angle iron / chanel iron pedestal frame made out of 3.15 mm thick CRCA sheet steel, compertmental type, dust proof, free standing suitable for working on 415 volts 3 phase 50Hz AC supply.

b) 03 Nos 50 KVAR super heavy duty cylindrical capacitor with discharge resistor and MCCB of suiable capacity and adjustable overload (70% to 100%) ON/OFF indication lamp & push button, including all necessary power contactor of suitable capcaity & wiring complete. c) 01 No 100 KVAR super heavy duty cylindrical capacitor with discharge resistor and MCCB of suitable capacity and adjustable overload (70% to 100%) ON/OFF indication lamp & push button including all necessary power contactor of suitable capcaity & wiring complete. Note: (i) Rate quoted shall be deemed to include the cost of necessary earth work, PCC foundation of APFC pannel and all accessories and switch gears. (ii) OEM drawing should be approved by Engineer-in-Charge before placing order.

Supply, install, testing & commissioning of outdoor LT panel cubicle type, 440 volts, 3 phase, vermin proof, factory made OEM approved, main frame 3.15 mm thick CRCA sheet with suitable MS angle iron frame with front and back openable, double door sytem lockable / openable by keys with louvers complete with powder coated with pure polyster simens grey structural RAL 7032 sahde and air vent gasket for natural flow of air, U gasket for making complete vermin proof the bottom plate shall be detachable plate type having provision for entry of armoured cables of adequate sizes with glands, gland plates and lugs with powder coated metal stand with provision for earthing stud at bottom and lifting lugs of suitable size at top danger notice plate having conventional symbol of bone and skull, ingress of protection of outer shall be IP-54, base frame on MS channel of suitable size with provision of incoming and outgoing cable entry at the bottom for outdoor installation, free standing floor mounted and

locking arrangements, copper busbar 80 x 10 sqmm bus bar, colour coded sleeving heat shrinkable type with bus bar of 1.5 times of incomer for phase and full rated capacity for neutral. Bus bar support of 'F' calss insulators epoxy type, earthing of 32 x 6 mm GI flat, control wiring with multi stranded copper conductor cable of suitable size alongwith fuses, MCBs etc including following accessories and switch gears complete all as specified and directed. (a) Incomer: i) LT ACB 1000A, 4 pole, 65 kA breaking capacity, manually draw-out, microprocessor release based, alongwith UV trip, Shunt trip / Closing coil - 01 No. (b) Outgoing: (ii) LT ACB 800A, 3 pole, EDO, 50 kA breaking capacity microprocessor release based, alongwith UV trip, Shunt trip / Closing coil - 1 No.

M&L for providing earthing complete with galvanised steel earth plate electrode 600 x 600 x 6mm thick buried directly in ground earth pit not less than 2.25 mtr deep below ground level with top edge of the plate not less than 1.5mtr below normal ground level) connected to galvanised iron earth strip 32 x 6 mm as earthing lead by means of bolts, nuts, check nuts & washers of GI or steel and connecting to earth dolly all as shown in electrical plate No. 3 connected to earth test point all as specified and indicated including testing on complete all as specified and directed. Note: Earth continuity conductor and GI protection pipe beyond 7.5m shall be measured and paid under the respective items.

Earthing complete with copper earth plate electrode 600 x 600 x 3.15 mm thick buried directly in ground (earth pit not less than 2.25 m deep below normal ground level) with top edge of the plate not less than 1.5 m below normal ground level connected to copper earth strip 20 x 3 mm by means of bolts and nuts check nuts and washers of galvanized iron or steel all as specified and shown in electrical plate No. 3 of SSR Part-I including charcoal and rock salt with necessary excavation and earth work in any type of soil PCC 1:3:6 type C1 chamber hinged to CI frame with MS bar 6mm dia 150mm c/c reinforcement, watering funnel with 15 mm dia light grade for watering and for protection of earth electrode 32 mm dia GI pipe all as specified and directed and tested on completion. Earth pits should be provisioned for attaining the resistance value of maximum 2 Ohms, complete all as specified and directed.

M&L for earthing continuity galvanised iron strip 32 x 6 mm dia or main earthing lead fixed to wall with clamps or recess or croses or buried in ground or drawn in conduits / pipe or fixed to poles or any other indicated situation for loop earthing as required all as specified and directed by Engineer-in-Charge.

M&L for earthing continuity copper strip 20 x 3 mm dia or main earthing lead fixed to wall with clamps or recess or croses or buried in ground or drawn in conduits / pipe or fixed to poles or any other indicated situation for loop earthing as required all as specified and directed by Engineer-in-Charge.

P VENKATA RAO (BID ID -3298342)

G Srinivas Rao (BID ID -3297563)

Roy and Sons Infrastructures (BID ID -3300391)

SUPREET CONSTRUCTIONS (BID ID -3296913)

Vijaypower Generators Limited (BID ID -3300452)

Chandra Reddy Electricals (BID ID -3300382)

KR POWER INFRA INDIA PVT LTD. (BID ID -3299180)