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Product Name: 33kv Arc Furnace Transformer Special Transformer Customized Brand: Silverstone Electrc Shape of Core: EC Frequency Characteristics: Power Frequency Usage: Power Transformer Certification: ISO9001-2000 Winding Type: Separated Winding Transformer Cooling Method: Oil-immersed Type Transformer Core: Ec Phase: Three Application: Power Customization: Yes Trademark: Silverstone Electric Transport Package: Container Origin: China Product Description Specifications35kV/6300 kva Power Transf. 1) CTQC, ISO9001, ISO14001, CE 2) Apply for IEC, GB, ANSI 3) Up to 230kV, 180MVA 4) Low lossesFeatures:1) Amount of local discharged: The apparent discharge amount is less than 80pC under 1.5 times of rated voltage;2) Noise: Products of 63MVA and below is lower than 58 dB (AN);3) Power loss: no-load loss is 30% lower than that of IEC standard;4) Reliability: All in-service products have no damages or oil leakage occurred;Application:60 ~220 kV power system of power plant, substation, mining enterprise and etc.Technologies:Design: relative developed software are adopted in Electromagnetic calculations, strength analysis, leakage magnetic distribution, its electro-dynamic force and electrical insulation.Manufacture:Core: effectively upgrade transformer's no-load performance by below methods:1) The core is made of high-permeable grain-orientated top quality cold-rolled silicon sheet and the material is cut with advanced Germany Geoge GmbH automatic shear line with the cut burs controlled within 0.02mm.2) The silicon sheet fabrication adopts "no-upper yoke lapped' technology and all lapped joints of the silicon sheet are 45 full-miters. The laminated core sheets are integrally pressed and adhered with epoxy resin to make the three leg two-yoke core a strong and flat integral one with good verticality precision, this effectively improves no-load performance and reduces noises.3) Bracing plates are used as support between coil leg and inner coil. The iron yoke is tied with epoxy resin-impregnated glass fiber band, and the lower section of oil tank is tightened with counter-pressure bolts. The upper iron and the upper section of oil tank are fixed at three locations. Hence the body inside the oil tank can withstand the vibration during transportation without any shift.Winding:1) The high-voltage (HV) coil adopts an interleaved-continuous structure to improve the voltage characteristics under impact voltage and make voltage evenly distributed. All stays and pads are chamfered to keep highly reliable insulation.2) In the transformer winding there is a zigzag oil guide structure so as to fully cool all areas inside the winding, lower the temperature rise of the winding and the hot points of the winding and prolong the service life of insulation. The HV and MV regulation system are independently provided with voltage-regulating winding to balance the ampere turn of each winding, effectively lower the axial electrodynamic force generated at short-circuit of transformer and improve abrupt short-circuit withstanding capacity.3) The winding adopts radial "0" margin designed, between the core and the paper sleeve of LV winding, and between the LV, HV, voltage-regulating windings, as well as before insertion of stays and shroud plate they are fully dried and tightly matched to ensure extremely good compactness and concentricity of the entire winding.Oil tank and accessories1) The tank wall adopts wide steel sheet, which will be folded into corrugated structure without splicing, in this way welds are decreased and mechanical strength is enhanced, meanwhile, the corrugated wall has diverging effect, and thus plays a role in decrease of noise. The routing troughs and control cabinets of the secondary circuit are all made of stainless steel, so the entire transformer has a simple and good looking.2) All sealing surface use quality sealing material and are precision-machined.3) On the edge of the tank there are double sealing grooves, and the outer sealing material is used to shade the atmosphere and ultra-ray to protect the inner sealing being damaged, thus at utmost prolonging service life and enhancing reliability of the seal.Rated power (kVA)H.V (kV)H.V. Tap rangeL.V (kV)Vector GroupImpedance (%)No-load Loss (kW)On-load Loss (kW)No-load Current (%)Oil Weight (kg)Total weight (kg)Overall dimension (mm)80035/38.5 ±3*2.5%6.3Yd11 or YNd116.51.069.981.05165047902870*1810*25701000 35/38.5 ±3*2.5% 6.3 Yd11 or YNd11 6.51.2612.161176052103150*1890*26501250 35/38.5 ±3*2.5% 6.3 Yd11 or YNd11 6.51.4914.630.9201060803510*2040*26901600 35/38.5 ±3*2.5% 6.3 Yd11 or YNd11 6.51.817.580.85192066103560*2070*27402000 35/38.5 ±3*2.5% 6.3 Yd11 or YNd11 6.52.319.240.8216074403680*2050*28502500 35/38.5 ±3*2.5% 6.3 Yd11 or YNd116.5 2.7220.640.8258082403780*2220*28903150 35/38.5 ±3*2.5% 6.3 Yd11 or YNd1173.2324.710.72268085403850*2310*29504000 35/38.5 ±3*2.5%6.6 Yd11 or YNd1173.8729.160.722960111804120*2380*31505000 35/38.5 ±3*2.5%10 Yd11 or YNd1174.6434.20.683050124804210*2510*32206300 35/38.5 ±3*2.5%10.5 Yd11 or YNd117.55.6336.770.684050159004320*3000*32908000 35/38.5 ±3*2.5%11Yd11 or YNd117.57.8740.610.64200171304500*3100*368010000 35/38.5 ±3*2.5% 11 Yd11 or YNd117.59.2848.050.67480252304560*3500*375012500 35/38.5 ±3*2.5% 11 Yd11 or YNd11810.9456.860.568010270004590*3580*383016000 35/38.5 ±3*2.5% 11 Yd11 or YNd11813.1770.320.548560325004650*3700*400020000 35/38.5 ±3*2.5% 11 Yd11 or YNd11815.5782.780.5410030377705200*4200*428025000 35/38.5 ±3*2.5% 11 Yd11 or YNd11818.96101.650.512300426005320*4350*434031500 35/38.5 ±3*2.5% 11 Yd11 or YNd11 822119.70.4513500511005450*4420*4450````````````````````````````````````
