DG and SG series single - phase and three - phase dry type transformer adopts high quality material and advanced technology , it has advantages of damp - proof and convenient maintenance, it can be applied to such power transmission and distribution places like underground railway , high building, airport, station, wharf, enterprise, tunnel, etc. It is mainly used in power supply occasions of AC 50~60Hz and voltage less than 500V. All the input and output voltage , connection group and capacity of tapped winding can be designed and produced according to users' requirements.
Main technical characters
1.Input voltage: rated voltage u00b110%
2.Output voltage: rated voltage +5% (no load)
4.Waveform distortion: no additional waveform distortion
5.Function: indication of input voltage, output voltage and current.
6.Protection: over-current protection
7.Can operate itself without anybody attending for a long term
8.Insulation resistance: >=50
9.Electric strength: no breakdown or flashover phenomenon under power frequency sine voltage of 2000V for 1min
10.Overload capability: for 1min under two times of rated current
Product Specification / Models
Type: Autotransformer and Isolation Transformer
Connection: Delta, Y, Star
Power: 300VA - 600KVA (or lager range)
u00d8 Input voltage: Rated voltage
Output voltage: Rated voltage + 5% (no-load)
Regular single phase convert: 100/110/120/160/200/210/220/230/240v
Regular three phase convert: 110/200/220/230/240/360/380/390/400/415/600/690/1140v
Transformer convert: Single phase to single phase, three phase to three phase, three phase to single phase
Note: Transformer cannot convert single phase to three phase, if need to do so, that is our frequency converter
Application / Models
Special design measures are implemented to reduce the inrush current, such as Primary winding at outer layers to increase resistance High grade iron core with high saturation to prevent core saturation during startup
Copper Strips with Class H (220oC) enameled coated.
Class H(NOMEX) Insulation material is used between overlapping turns or layers.
u00d8 Axial channels are used between layers of primary and secondary winding to provide air gap for uniform cooling. High temperature tolerant fiberglass boards are used as bobbins to separate the core and windings. Sized, transposed and shaped to minimize Eddy current losses.
Sized additional 27% to carry triplen harmonics circulating current effect in the delta without overheating the transformer.
Fully impregnated with class H varnish and oven dried.
Shanghai Xishun Electric Co., Ltd is a comprehensive enterprise, which is indulged in various voltage regulator, stabilizer, power supply, power transformer, regulator, UPS,power inverter, purified power, charger, DC power as well as development, sales,service in other relevant electrical industry. Meanwhile, it is a member of China Power Supply Association, assured by PICC and passed ISO9001 quality management certificate system.The company insists the scientific development value as a combination of heory and practice together, which brings many engineering and technical personnel from major universities nationwide as well as society and kinds of high-tech testing and laboratory equipment. Due to this concept, it can assure that each kind of our products old advanced design, stable performance, and excellent quality. With the rapid development of power system, the enterprise products range develops day by day and the company always adheres to build a world well known brand. The company establishes a sound marketing management center and a large network system. Its product is widely sold home(major cities nationwide) and abroad ,such as southeast Asian market constantly, stable trade cooperation with Middle East, South Africa, North America, Europe, and other countries worldwide, which gains good reputation among customers and holds solid foundation for the company. The company deeply knows the point that technology innovation is the motivation and source, reliable quality is our guarantee, trustworthy service is our responsibility. We welcome the customer worldwide visit our company and factory in Shanghai for more specific and detailed information.Wooden packing or packing it according your requires