high current industrial transformers SF11-120000/69-33
Specification:
1). KEMA CESI CE ISO certified
2). according to IEC, ANSI, GB
3). 120mva 120000kva
4). 69kv
Features:
1) The apparent discharge amount is less than 80pC under 1.5 times of rated voltage;
2) Noise: 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:
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.
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 oil tank can withstand the vibration during transportation without any shift.
Winding:
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 accessories:
1)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
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.
Power transformer
Certificates
Company overview
Research and development center
Corner of workshop
Material(copper,insulation paper and silicon steel sheet)
Part of equipment
Customer visiting and Ordering
Manufacturing
Shenda Electic Group Co., Ltd
Shenda ( In full: Shenda Electric Group Co.,Ltd.) is one of the leading manufacturers in the power transmission & distribution industry. Founded in 2000 and currently employs about 1,100 employees worldwide. Shenda operates three factories (two in China and one in the United States of America - R. E. Uptegraff Manufacturing Company, LLC of Pennsylvania, U.S.A.). Shenda also owns other ten subsidiaries throughout China. The annual gross sales is USD$250 million in 2015.
Shenda's annual total production capacity is about 18,000,000 KVA, Our main products include oil immersed power transformer(up to 250MVA/ 330kV) , dry type transformer(up to 20MVA/35kV), combined transformer substation, amorphous alloy transformer, rectifier transformer (100MVA/220kV )and especially furnace transformer(180MVA/220kV). Our products' performance measures up to the standards established by International Electric Committee (IEC).
All of Shenda transformers' parts' manufacturing must put quality management system: ISO 9001:2008 Into practice, and only those transformers that have successfully passed all the comprehensive tests will then go into practical application. Additional Shenda Electric's products have obtained Short circuit test report from CESI Italy, Type test report from KEMA Netherlands, V-check certificate from KESCO Korea, etc.
Owing to our good reputation on quality and service, our products have been sold well not only throughout China, but also exported to more than 60 overseas countries and regions
Today Shenda is one of the largest supplier of furnace transformer to the steel industry and the largest supplier of power transformer in Ecuador.
SHENDA has formed its own technology characteristics by absorbing and assimilating advanced technology, the iron adopts the advanced 45o total -oblique connecting seam, upper iron yoke non-folding to reduce the no-load loss; adopt advanced core column tightening device to reduce the noise further; the winding adopt combined lead and transposition lead to reduce the additional loss; calculation accurately the impulse features of electric filed and winding to ensure the excellent electric property and impulse intensity.
Shenda has after-sales agents in Phillippines,Malaysia,South africa,America,Ecuador.
We are professional to give installation and commission service worldwide.
We are always in the position to serve you at any time with our best commercial and technical solution
Any need for power transformer, please feel free to contact us:
Lluvia
Oversea sales | Oversea Dept.
Shenda Electic Group Co., L
Audited Supplier 
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