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| 1 | Supply, Installation, testing and commissioning of Servo controlled voltage stabilizer 1000 KVA capacity (confirming to BIS 9815 (Part-I) : 1994, reaffirmation 2019 latest version). Three phase, four wire (RYBN), 50 Hz Naturally Oil cooled, indoor, unbalance type, cooper 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 level having following specification:-(a)Capcity - 1000 KVA.(b)Type - Suitable for unbalanced load and unbalanced input.(c)Input voltage - 360V-480V, input frequincy 50 Hz.(d)Output voltage - stabilized at any degined/ desired voltage 415/ - ± 1%(e)Rated Frequency - 50Hz.(f) Wave form distortion-Nil(g)Response time - not to exceed 20 milli seconds.(h)Sensitivity - (+/-) 1%(j)Rate of correction - Not less than 6 Volt/ second between phase and neutral(k) Efficiency - more than 95%(l)Type of load - three phase, unbalanced type(m) Metering- Digital display Voltmeter/ Ammeter with multi - functional meter(n) Operating Temp - For indoor use upto max ambient temp + 550 C(o)Dimmer rating - suitable for 1000 KVA capacity(p)Dimension of tanks - as per OEM recommendation(q)Oil capacity - as per OEM recommendation(r) Class of insulation - Class F |
| 2 | (s)Mode of operation Automatic/ manual(t)Winding Temperature rise - Max + 55 Degree Celsius (10 Degree Celsius above operating temp)(u)Transformer oil - IS 335 marked (v)Core - CRGO M4 Grade / CRNO (Cold Roll Grain Oriented)/ (Cold Rolled Non Oriented)(w)Auto Transformer (Variac) - 100 percent Copper wound Electrolytic Grade (x)Losses - As per IS Norms(y)Power Factor - Not less than 0.95(z)Protection - (i)Over load protection(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(aa) Standard Fitting & Accessories e.g. Marking plate, lifting lugs, CI Rollers, Earthing,Terminals etc cable box.Make : Indian Transformers and Electricals Pvt. Ltd., Siemens, Schneider, Crompton Greaves |
| 3 | Supply, laying LT cable XLPE insulated, galvanized steel strip armoured, 1100 volts grade, with stranded aluminium conductor cable of size 630 sqmm x 3.5 core conforming to IS-7098 Part-I with latest amendments up to date including aluminium lugs with proper crimping and steel glands and laid intrenches/ducts/floors/walls/through pipes etc complete all as specified and directed. |
| 4 | Earthing with Galvanized steel earth plate electrode of size 600mmX600mm, 6.00 mm thick buried directly in ground vertically to a depth not less than 2.25 metres below the normal ground level with top edge of the plate not less than 1.5m below normal GL and connected to galvanized iron strip of size 32 x 6 mm size by means of bolts, nuts, check nuts and washers of galvanized ironsteel all as shown in Electrical Plate No.3 connecting to earthing test point, including necessary earth work in any type of soil, PCC earth chamber made in PCC 1:3:6 type C1 (using 20mm graded aggregate), common salt, charcoal, CI funnel, earth pit cover in RCC 1:2:4 type B1(using 20mm graded aggregates), with 8mm CTD bars @ 100mm c/c in both ways, including necessary form work complete including necessry test on completionincluding taking out old earthing all as specified and as directed. Note : The unit rate shall also include for excavation, earth work in hard/dense soil PCC (1:3:6) type C1 pit, RCC cover slab, GI funnel with 40 mm dia watering pipe, wire mesh, 15mm dia light grade GI protection pipe for earth lead etc., complete all as specified and directed. |
| 5 | Supply and fixing of GI Strip 32x6 mm strip buried in ground , floor/ fixed to poles/ through pipes etc complete all as specified and directed. |
| 6 | Supply and fix danger notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white with letters figures and conventional skull and bones in signal red clour and fixed with MS clamps bolts ans nuts of approved size forLT 20 X 15 cm size complete all as specified and directed. |
| 7 | Supply and fixing heavy duty Hot dip Galvanised perforated type cable tray, 600 mm (width), side height 100 mm, thickness 3 mm including standard hanging supports, fabricated ‘L’ shaped angle iron support at suitable intervals,horizontal elbow/bends, perforated type tee outer and inner elbow complete including all jointing materials as per standard complete all as specified and directed. |
