Providing VCB Panel in place of DP structure to Alipiri security zone substation, Tirupati.

PART-A (Tender)

Supply and fixing of fabricated M.S clamps made out of various sizes of (25mm x 3mm, 25mm x 6mm etc.) MS flat / angles / channels etc., with necessary holes on either side with suitable MS bolts and nuts and painting 2 coats of enamel black paint over one coat of red oxide suitable for fixing of PVC pipes, Conduit pipes etc., on Trusses / Channels etc. including all labour charges etc., complete.

Supply and Transportation of 150 sq.mm 3 core 11 KV HT XLPE (E) insulated and armoured aluminium U.G. Cable as per IS specification confirming to IS:7098 / 11 / 85 H.T. cable for working voltage 11 K.V Earthed with Stranded Compacted Circular Aluminium Conductor Screened with Extruded Semi-conducting compound, XLPE Insulated Screened with extruded semi-conducting compound in combination with Copper Tape, cores laid up, inner sheath of Thermoplastic tape, galvanised flat steel strip armoured and overall Extruded PVC Type ST- 2 Outer Sheathed cable etc complete.

Make: Torrent / Universal / Unistar / Havells / KEI / Polycab / Gloster / RR Kabel / RPG / Finolex

Laying of U.G cables size from 70 Sq.mm to 150 sq.mm and back filling of trench including labour charges etc., complete.

Supply Laying and Transportation of Outer dia 160mm and inner dia 136mm, 6Kg/Sq.Cm (PE- 100 grade) double walled corrugated HDPE duct made as per specification BSEN - 500 86/IS 14930 Part-II.

Make: DURA LINE (Dura Guard) or its equivalent make.

Supply of 150 mm dia G.I. pipes of "B" class of ISI marked and approved by the department including cost and conveyance and all other incidental charges etc., and properties and weight as per IS 1239 marked.

Make: Jindal / Appollo / TATA.

Earth Work excavation for trench for laying of U.G. Cable in ordinary Soils, manual means to the required width and depth and depositing the same on bank as directed during execution etc., complete .

Cutting open cement concrete road

Cement concrete using 20mm HBG metal in CC (1:3:6) laid in Layers of not more than 15cms thick well compacted including curing cost and conveyance of materials etc., complete

Plastering in CM (1:6) with 12mm thick using river sand including curing, conveyance of materials etc.,

Providing of Independent Earthing as per IS 3043 of 1987 with Copper Plate of 600 mm X 600 mm X 3.15 mm thick of Electrolytic grade burried the top of the plate below 2 M from ground level after excavating an Earth pit of 1.5 x 0.9 x 2.55 m (Top 1.50m X 0.90m X 0.90m) and Bottom (1.20mX 0.90m X1.65 m) rigidly fixed to 40 mm dia GI pipe of 2 m long with 3 Nos. of 25 mm X 6 mm Clamps with suitable bolts, & nuts. 2 Nos. of 25 mm X 6 mm Copper Flats of 2 M long are to be fixed with brass bolts & nuts and brazed at bottom side to the copper plate on either side of the GI pipe. A concrete bed of size 0.8 M X 0.8 M X 0.10 M thick and an inspection chamber having inside measurements of 0.4m X0.4 m X 0.4 m with wall thickness of 100 mm with cement concrete CC (1:2.5:5) using 20 mm HBG Metal is to be constructed with side wall 100 mm above ground level and plastering the exposed walls neatly with CM (1:3) with 12 mm thick. The Top of the inspection chamber is to be provided with reinforced precasted RCC slab with 40 mm thick with lifiting hook.

The top of the 40 mm dia GI pipe is welded with reducer and 0.3 M, 20 mm dia GI pipe. the top of the 20 mm GI pipe is to be fixed with funned & wiremesh. The top of the 25 X 6 mm copper flats are to be fixed with brass bolts, nuts, washers & brazed with 0.2 M of 50 X 6 mm copper flat across and the same is to be fixed with suitable GI strip to the 40 mm GI pipe. The Entire set is to be placed in the Earth pit, the mixture of 40 Kgs of Hardcoke / charcoal, 20 Kgs of salt, & sand is spread around the copper plate and around to the 40 mm GI pipe and the remaining is to be back filled. consilidation / settlement of filled eath pit is to be done by filling water. After giving earth connections to the 50 X 6 mm copper flat with brass bolts, nuts & washers. A pre- casted RCC slab cover with 50 mm thick with lifting hook is to be provided on top of the Earth pit. The rate includes cost and conveyance of all materials, labour charges, incidental charges etc., complete. (Note: Necessary meggaring testing is to be done in the presence of the concerned Engineers, and the reading should be as per IE standards)

Supply and run of 50mm X 6mm G.I Strip for

earth electrode to required places on Surface of walls, flooring including cost of all accessories and giving necessary connection with 3/8"x2" GI Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply, Installation, Testing and Commissioning of outdoor type floor mounted metal clad, 12KV, 630A 25KA / 3 Sec, Horizontal Draw Out VCB fitted with Manual / Motor Operated spring charging mechanism with 230V AC motor & Motor Control Switch, mechanical ON/OFF indicator Operation Counter, Automatic safety shutters & push button etc. 24V DC Control Voltage for closing coil / trip coil and anti pumping relay.

The Outdoor VCB panel made with 2.5mm thick MS Sheet steel enclosure with degree of ingress protection shall be IP54. The entire enclosure shall be quality surface treatment and powder coated or Polyethane painted with any approved colour.

a) 1 No. 630A 12kV 25kA VCB.

Make:- Siemens / GE /L&T / Schneider /Meghawin / ABB / PCE / Any other approvedbrands in APSPDCL

b) 1 Set of Resin cast, Fixed, Dry type, 11KV / 1.732 / 10V / 1.732, Class-0.2 Burden, 100VA Potential Transformer with HT / LT Fuses.

Rating: 11kV, 110V, 50VA, CI .0.2.

c) 1 Set of Single Phase, Resin cast, Dry type, Current Transformer of Ratio Rating. 11kV, 200-100/1-1A.

Core 1: Metering : Cl.0.2, 15VA

Core 2: Protection : Cl.5P10, 15VA

Make: Kappa / Schneider / Approved brands in APSPDCL

d) 1 No of Digital Ammeter with Selector Switch of CI. 0.5.

1 No. of Digital Voltmeter with Selector Switch of CI. 0.5.

Make: Elmeasure / Schneider / Conzerve / Meco

e) 1 No. of HT Trivector meter with TTB with RS485 Communication port of C1.0.2 - 1 No.

Make: L&T / Secure

f) 1 No. of Numerical Non-Directional IDMT combined 3 O/C and 1 E/F relay with highest.

Make: L&T / Ashida / Approved brands in APSPDCL.

g) 1 No. of High speed / Master trip relay - 1 No.

Make: Ashida / Approved brands in APSPDCL.

h) 1 No. of Aux. Relays for Transformer fault Annunciation.

Make: Ashida / Approved brands in APSPDCL.

i) 1 No. of Trip circuit supervision relay.

Make: Ashida / Approved brands in APSPDCL.

j) 1 No. of Microprocessor 8 Window Annunciator.

Make: Ashida / Approved brands in APSPDCL.

k) 1 Set of AC & DC fail relay with alarm.

Indication Lamps.

VCB ON/OFF / Auto Trip / Trip circuit healthy / Spring charge / TEST / Service LED indication lamps.

Make: L&T (ESBEE) / Teknic / Vaishno

Control Switch/ Push Buttons

Breaker Control Switch (Close-Neutral-Trip) Single pole / Double pole Control MCBs for AC and DC.

Make: Legrand / ABB / L&T / Schneider.

Trip Circuit Healthy Push Button of Flash Head type - 1 No.

Mechanical Emergency Push button switch without opening any door - 1No.

Make : L&T (ESBEE) / Teknic / Vaishno

VCB lncoming / Out going Busbar size : 60 x 12mm

Earth busbar size : 25 x 6mm

Supply of DC Power Pack: 24V, 5A, with battery bank 12V x 2Nos. = 24V, 42Ah

Power pack Make: Best Power / Power Media

Batteries: Exide / Panasonic / Amaron.

Make: Siemens / GE / L&T / Schneider / Meghawin / ABB / PCE / Any other approved brands in APSPDCL

Providing earthing as per IS 3043/ 1987 with 100mm (ID), 13mm thick C.I. Pipe of 3.0 mtr. length after excavating an earth pit of size1.5 m X 0.9 M X 3.00M(Top 1.50 m X 1.20 m X 0.9m & bottom 1.20 M X 1.20 M X 1.65 M) and filling with a homogenous layer of 40 Kgs. of Coke / Char Coal, 20 Kgs. of Salt and the required quantity of sand around 100mm pipe from the bottom of the pipe to a height of 2.7mtr. and filling the remaining excavated portion with earth and consolidation / Settlement of the trench should be done by filling with sufficient quantity of water. A concrete bed of size 0.8 M X 0.8 M X 0.1 M thick and an inspection

chamber having inside measurements of 0.4 M X0.4 M X 0.4 M with wall thickness of 100 mm with cement concrete CC (1:2.5:5) using 20 mm HBG Metal is to be constructed with side wall 100 mm above ground level and plastering the exposed walls neatly with CM (1:3) with 12 mm thick.

The Top of the Inspection Chamber is to be provided with reinforced precasted RCC Slab with 40mm thick with lifting hook. The top of C.I. Pipe is to be fixed & welded with suitable G.I. Wire mesh funnel 50mm x 6mm G.I. Strip having length of 300mm is to be fixed to the top of C.I. Pipe with G.I. Clamps fabricated with 50 x 3mm G.I. Flats with necessary bolts and nuts and necessary welding to be done to the clamps and C.I. Pipe. 2 Nos. of holes are to be drilled on either side of G.I. Flat for Extending earth connections. 65mm dia PVC Pipe is to be embedded at the pit entry for earth.

After laying earth from earth conductor bus to Electrode trough PVC Pipe, the surface should be covered with bitumen and grease. The cost of GI/Copper flat to be run from CI Pipe electrode to the equipment is to be made separately on running meter basis. The work shall be executed strictly as per IS 3043 - 1987. The rate includes cost and conveyance of all materials, labour charges, incidental charges etc., complete (Note:- Necessary meggaring testing is to be carried out in the presence of concerned Engineers and measurement of resistance shall be as per ISI standards)

Dismantling of the existing Street / Yard lighting poles / L.T.O.H / H.T.O.H poles with allied accessories (Stem pipe / MS Box / Cross arm / fitting / PVC wire / MS clamp etc.) with out causing any damage to the said materials making site clear by refilling the pit with excavated material and bringing it to the ground level (Note: The dismantled above materials are to be returned to concerned section officer by the contractor at his cost)