PROVISION OF VOLTAGE STABILIZER 500 KVA AND 200 KVA QTY-01 EACH AT MAFI PS-1 AND PS-2 AT AFA HYDERABAD

Amount

M&L for carefully disconnecting existing LT cables of size of any size/ type from Main LT panel board and connect to the auto voltage stabilizer with the new lugs, nuts, bolts and washers etc by opening chequered plates on the ducts all as directed by engr in charge.

Supply, installation, testing and commissioning of Servo Controlled Voltage Stabilizer (confirming to BIS 9815 :1994, reaffirmation 2019 incl latest amendments). Three phase, four wire (RYBN), 50 Hz, Naturally Oil cooled, indoor, unbalanced type, copper wound, metallic body duly power coated with lifting hooks two nos, digital display type, relay free smooth and silent operation with 1st filling of Transformer oil up to the required level having following specifications :- Capacity 200 KVA Make : APLAB/VENER-7/SINETRAC/ or Techno-commercially equivalent makes as approved by HQ CE Commands.

(a) Capacity - 200 KVA (b) Type - Suitable for unbalanced load and unbalanced input (c) Input voltage – 360 V to 480 V, Input frequency 50 Hz (d) Output voltage - Stabilized at 415 V+/- 1% without Spikes (e) Rated frequency - 50 Hz (f) Wave form distortion - Nil (g) Response time - Not to exceed 10 milli seconds & PF at full load shall not exceed 0.95 (h) Sensitivity - (+/-) 1% (j) Rate of correction - Not less than 50 Volts/Second between phase and neutral without under/over shooting. (k) Efficiency – Not Less than 98% & shall be free from distortion in wave forms (l) Type of load three phase, unbalanced type (m) Metering - Digital display Voltmeter/Ammeter with multi-functional meter (n) Operating temperature - For indoor use upto max ambient temp + 55°C (o) Class of insulation - Class F (p) Mode of operation - Automatic/manual (q) Winding Temperature rise - Max 55°C (10°C above operating temp) (r) Transformer oil - IS 335 marked, Oil Capacity – As per IS/OEM. (s) Core - CRGO M4 Grade/CRNO (Cold Roll Grain Oriented)/ (Cold Rolled Non-Oriented) (t) Auto transformer (Variac) - 100 percent Copper wound Electrolytic Grade

(u) Losses - As per IS Norms (v) Power Factor - Not less than 0.95 (w) Protections with Indications & Alarm Systems : (i) Over load protections (ii) Short Circuit protections (iii) High/Low voltage cut off (iv) By pass arrangement in case of Emergency (v) Single phase sequence change /phase fail protection (vi) Earth fault protection (x) Standard Fittings & Accessories : (i) Name, Rating & Terminal Marking plate (ii) Digital Temperature Indicator. (iii) Plain Unidirectional CI Rollers. (iv) Lifting Lugs. (v) Earthing Terminals. (vi) Oil Level Gauge. (vii) Control Panel. (viii) Automatic Module. (ix) Cooling Radiators etc. (y) Other Fittings & Accessories : (i) Input/Incoming side 4P, MCCB, 400 A, 36 KA Breaking Capacity, Ics = 100% Icu suitable for 200 KVA Servo Voltage Stabilizer. (ii) Output/Outgoing Side Heavy Duty Power Contactor of rating/type suitable for 200 KVA Servo Voltage Stabilizer.

Supply, installation, testing and commissioning of Servo Controlled Voltage Stabilizer (confirming to BIS 9815 (Part-1) :1994, reaffirmation 2019 incl latest amendments). Three phase, four wire (RYBN), 50 Hz, Naturally Oil cooled, indoor, unbalanced type, copper wound, metallic body duly power coated with lifting hooks two nos, digital display type, relay free smooth and silent operation with 1st filling of Transformer oil up to the required level having following specifications :- Capacity - 500 KVA Make : APLAB/VENER-7/SINETRAC / or Techno-commercially equivalent makes as approved by HQ CE Commands

(a) Capacity - 500 KVA (b) Type - Suitable for unbalanced load and unbalanced input (c) Input voltage – 360 V to 480 V, Input frequency 50 Hz (d) Output voltage - Stabilized at 415 V+/- 1% without Spikes (e) Rated frequency - 50 Hz (f) Wave form distortion - Nil (g) Response time - Not to exceed 10 milli seconds & PF at full load shall not exceed 0.95 (h) Sensitivity - (+/-) 1% (j) Rate of correction - Not less than 50 Volts/Second between phase and neutral without under/over shooting. (k) Efficiency – Not Less than 98% & shall be free from distortion in wave forms (l) Type of load three phase, unbalanced type (m) Metering - Digital display Voltmeter/Ammeter with multi-functional meter (n) Operating temperature - For indoor use upto max ambient temp + 55°C (o) Class of insulation - Class F (p) Mode of operation - Automatic/manual (q) Winding Temperature rise - Max 55°C (10°C above operating temp) (r) Transformer oil - IS 335 marked, Oil Capacity – As per IS/OEM. (s) Core - CRGO M4 Grade/CRNO (Cold Roll Grain Oriented)/ (Cold Rolled Non-Oriented) (t) Auto transformer (Variac) - 100 percent Copper wound Electrolytic Grade

(u) Losses - As per IS Norms (v) Power Factor - Not less than 0.95 (w) Protections : (i) Over load protections (ii) Short Circuit protections (iii) High/Low voltage cut off (iv) By pass arrangement in case of Emergency (v) Single phase sequence change /phase fail protection (vi) Earth fault protection (x) Standard Fitting & Accessories : (i) Name, Rating & Terminal Marking plate (ii) Digital Temperature Indicator. (iii) Plain Unidirectional CI Rollers. (iv) Lifting Lugs. (v) Earthing Terminals. (vi) Oil Level Gauge. (vii) Control Panel. (viii) Automatic Module. (ix) Cooling Radiators etc. (y) Other Fittings & Accessories : (i) Input/Incoming side 4P, ACB/MCCB, 800 A, 50/36 KA Breaking Capacity, Ics = 100% Icu suitable for 500 KVA Servo Voltage Stabilizer. (ii) Output/Outgoing Side Heavy Duty Power Contactor of rating/type suitable for 500 KVA Servo Voltage Stabilizer.

Supply, laying & testing insulated XLPE UG cable 1100 volts grade, armoured confirming to relevant IS specifications with aluminum conductor of size 300 sqmm 3.5 core including dismantling and taking out the unserviceable cable all as directed.

Supply, laying & testing insulated XLPE UG cable 1100 volts grade, armoured confirming to relevant IS specifications with aluminium conductor of size 240 sqmm 3.5 core including dismantling and taking out the unserviceable cable all as directed.

Supplying and laying Synthetic Rubber Insulated Mats 2.5 mm thick for voltage upto 11 KV for electrical purpose as per IS 15652-2006, (Superseding IS 5424) suitable for electrical shock safety of sizes 2.0 mtr x 1.0 mtr complete all as specified and as directed

S&F layout/SL diagram of substation (PS-I & PS-II) showing connections of all HT incoming and outgoings including RMUs and breakers with blue background on a sheet of size 4x4mx2.5mm thickness with white/red coloured lines and letters Note: Layout diagram to be approved by engr-in-charge before fixing.

M&L for maintenance free chemical earthing with 01 No of copper cladded 17.2mm dia nickel cadmium steel with high tensile strength electrode of each of 3.0 m with suitable compressive coupler planted at depth not less than 3.0 m depth and duly covered with low resistant superior conductive powdered non corrosive, concrete brand earth enhancing material all as directed including connecting up to the common bus bar for a length upto 7.5 m with copper strip of size 20 x 3mm to achieve an earth resistance of below 1.0 Ohms including suitable PVC chamber. The copper strip shall be jointed to electrode with exothermic welding and all other joints shall be properly brazed complete all as specified and as directed. (i) Electrode and copper strip of size 20 x 3 mm shall be welded using exothermic welding for interconnecting the earth electrodes and from earth to grid point up to7.5 m along with 40 mm dia GI light grade protection pipe. (ii) The carbon based compound shall have a resistance value of less than 1.0 ohm. The compound shall be of minimum 30 kg per pit. (iii) The bore hole for earth electrode shall not be less than 100 mm dia and 2mtr deep from GL and the extended rod shall be driven to a total depth of 3 mtr. (iv) Provn of earth pit chamber with cover made out of heavy duty poly plastic etc. and earth inspection cover made of high grade plypropylene os size top dia not less than 250 mm, bottom dia not less than 300 mm and height not less thaan 250 mm having load bearing capacity not less than 5 tonnes for electrode pit. (v) Necessary earth work excavation in any type of soil, returning filling and making good the surrounding area complete. Note:- Testing of earthing to be carried out in teh presence of Engineer-in-Charge/ JE E/M and test results submitted duly signed In the event of earth resistance results being more than the desired value of less than 1.0 Ohm. Subject earthing shall be redone by the contractor at NO extra cost to the Deptt to achieve the desired results. Back-fill compound shall be environment friendly. Necessary test certificate to be submitted in support of the same. (vi) All the joints Except test point shall be welded/ brazed properly and the copper earth strip whenever laid on the wall, floor etc shall be fixed on ceramic insulators not more than 600mm apart. (vii) The contractor shall have to give guarantee for maintaining earth resistance of less than one ohm for a period of 05 years certified date of completion and to deposit security deposit of Rs 2000/- per each grid for a period of five years. (i) One No earthing shall be connected for obtaining lowest earth resistance which shall be less than two ohm.

Supply and fix Copper strip 20 x 3 mm suitable for DMC / FRP insulators & fixing screws etc. for roof conductors / down conductors / connecting to earth pit to equipment and brazing all the joints complete all as specified and as directed.

S& F in Earthing grid indicator made out of 3 mm thick MS sheet of size 300 x 200 duly welded with 500 mm long 25x25x6mm angle iron duly fixed near to the grid point with cement grout including writing earthing details such as earth resistance, connected to etc complete all as specified and as directed.

Supply and fix Test Point Terminal Block made of gun metal or Phosphorus bronze size 75 mm x 75mm x25 mm, drilled and screwed and including 3 Nos 8 mm dia 25 mm long head screws. complete all as specified and as directed.

S&F DMC / FRP insulators, of suitable size to separate the earth strips from the walls, duly screwed on the walls and makingholes in the earth strips by drilling and fixing the earth strip rigidly with the insulators with GI bolts, nuts, washers etc complete all as specified and as directed.

Excavating in trenches, n exc 1.5m wide and n exc 1.5m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5m in depth and getting out in hard/dense soil.

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

Removing excavated soil n exc. 50m and depositing where directed at a level n exc. 1.5 m above the starting point complete all as specified and directed.

M & L for PCC 1:4:8, type D2 using 40mm graded stone aggregate as in foundation, filling, mass concrete and sub base as in floors etc., complete all as specified and directed.

M&L 100mm thick plain Cement concrete type B-1, 1:2:4 (20mm graded aggregate) as in floor finish concrete complete all as specified and as directed.

M&L for pre-cast cement concrete block masonry of Type C1 1:3:6 (using 20mm graded stone aggregate) with solid blocks, exc. 10 cm in width and setting in cement mortar 1:4 etc complete.

M & L for Rendering 10 mm thick on fair faces of brick work or concrete wall surfaces in CM 1:6 surface finished even & smooth without using extra cement complete all as specified.

M&L for providing Cement concrete 1:2:4, type B-1 mix using 20 mm graded aggregate as in coping, complete all as specified and as directed.

S&F MS Chequered Plates Fe-410 W (Gde E-250) Quality B (plain or chequered) channels, square cut or notched (ordinary and counter sunk) forming holes, without any attachment

S&F Joist, channel, Flat ,angle, or tee sections, Fe-410 W (Gde E-250) Quality B fixed independently, without connecting plates, etc. (cut to ordinary lengths i.e. within 20mm of the length indicated)

M&L for preparation of new steel surfaces and applying two coats of synthetic enamel paint over a coat of red oxide zinc crome primer on Surfaces of any description, not exc10cm in width or girth, not otherwise described complete all as specified and as directed.

Dismantling of Stone slabs and tiles laid bedded and pointed in any mortar of any description or thickness in floors, aprons etc. complete all as specified and directed.

M&L for machine cut kota stone slab flooring 20-25mm thick(not less than 450x450 MM SIZE) in floor over 15mm thick cement screed bed of CM (1:4 ) laid and jointed with grey cement slurry mixed with pigment to match theshade of the slab including rubbing and polishing complete

OM SAI POWER SYSTEMS (BID ID -3459180)

Srinivasa Consructions (BID ID -3458837)

Indu Electricals (BID ID -3455332)

POWER CONSTRUCTION COMPANY (BID ID -3459337)

THE DECAN ENGINEERING AND REFRIGERATION COMPANY (BID ID -3464877)

VBK ELECTRICALS AND AGENCIES PRIVATE LIMITED (BID ID -3459077)