Furnace Transformer is a power equipment which is suppo- rting for EAF. It has more stringent requirements in electric, magnetic, thermal, mechanical and other aspects compared with other transformers, and has to comply with the operation process of various furnace transformers and load characteristics, so that it can meet users, and facilitate energy-saving emission reduction and other conditions. There are many kinds of furnace transformers. The company mainly produce the following products: High impedance furnace transformer, DC arc furnace transformer, ladle refining furnace transformer, submerged arc furnace transformer (including ferroalloy furnace tran- sformer, calcium carbide furnace transformer, yellow pho- sphorus furnace transformer,single phase titanim slag furnace transformer etc.), electro slag furnace transformer, frequency induction furnace transformer, single-phase graphite furnace transformer, etc. Take on-load tap furnace transformer with -shaped winding which is developed independently for example, the features as fellows: The transformer is a arc furnace power transformer which is used to make a high-quality steel and alloy smelting arc furnace. It consists of series voltage regulator transformer and main transformer which are mounted on the same tank. The two low-voltage winding are made of the , replacing the cumbersome welding process between two low-voltage windings. Features: 1.Wide range of voltage-regulate. Secondary voltage of differential voltage levels meets the arc furnace steel-making process requirements. 2.High-voltage has no restriction of switching insulation level, and it (e.g. 110kV) can be reduced to low-voltage directly, eliminating the intermediate substation and saving more than 30% invested. 3.Easy to choose suitable voltage-level load tap changer, economic and safe. 4.It can be accessed compensation capacitor in order to improve network power factor. 5.The main transformer works in constant flux density. Make full use of materials and have a good conservation. 6.Using the same reverse-phase parallel, electric (or magnetic) shielding, transposed conductors and so on to reduce losses and improve efficiency. 7.A separate voltage coil is used so that ampere-turn balance is good, coupled with cylinder pressure nail structure, its ability to withstand short-circuit is also increased and has high reliability. 8.Using third breaking off instead of primary breaking off so that it can be achieved with low price and high life of low-voltage circuit breakers instead of high price and low life of high-voltage circuit breaks. Take 31500/110 arc furnace transformer for example, the load loss, no-load loss, no-load current is dropped 13%, 17%, 26% compared with the original product respectively. It is a real energy-saving emission reduction innovative product. fumigation wooden package
Rectifier transformer is a transformer which used as the source of rectifier equipment. And primacy side of rectifier transformer connected with AC power is called line side, and secondary side connected with rectifier is called valve side. Our company use the advanced techniques and manufacturing process, and with domestic colleges and universities to develop a number of research projects. Using procedural design, insulation breakdown mechanism, the electric field numerical analysis and insulation technology, the impact of characteristics and anti-sudden short-circuit strength of winding, the loss of eddy current filed calculation are analyzed and calculated. With manufacturing experience on rectifier transformer for many years, our company has got major break-though on the basis of the traditional calculation, which will further improve the reliability and advancement of products. Features about rectifier transformer: 1.The rectifier transformer load is non-linear impedance, and valve side windings of rectifier transformer would get the currents which contain fundamental and other high-order harmonic superposition. And line side also gets corresponding non-sinusoidal currents connected by rectifier circuit coupling method. 2.According to different requirements of various customers, the valve side of rectifier transformer has a variety of special coupling method, such as: dual-back-star with inter phase reactor, three-phase bridge, star-delta parallel, six-phase bridge by inter phase reactor. 3.To improve power factor and reduce the line side harmonic currents of high-power rectifier equipments, rectifier transformer is needed to use star-delta winding phase displacement, phase-shift windings by phase displacement, autotransformer phase displacement, to improve the number of pulse of rectifier equipment. 4.According to the user¡¡¥s process requirements, the rectifier transformer line side voltage is required (such as 220kV) straight down to a very low valve side voltage (such as 1kV). The valve side voltage of rectifier transformer is required within a wide range of on-load tap from 5% - 105%. Auto voltage regulator and main theme of unity, string variable voltage regulator and other ways are used in rectifier transformer to achieve the purposes of a wide range voltage. 5.Self-saturable reactor can be used to change over and stabilize voltage in order to smooth rectify voltage. And some use silicon control to regulate voltage. 6.Valve side current of high-power rectifier equipment is very large, reaching 100kA and even greater. To improve power factor and avoid partial overheating and uneven distribution of current rectification components, it¡¡¥s required the technology of reverse-phase parallel. 7.With the wide application of AC frequency control technology, newly developed three-crack drive rectifier transformer came into being. And the lower voltage valve side of this transformer cracked into three independent branches, which can be made to supply for three different load power, which achieve ¡¡ã multi functional ¡¡À effect, reducing loss and saving area. 8.In order to reduce the large current in the fuel tank and other structures caused by loss, the rectifier transformer used magnetic shielding technology and so on. A number of 220kV and below and different kinds of rectifier transformers have been manufactured for the general industrial, electrochemical electrolysis, transmission, traction frequency, variable frequency power supply, DC power transmission and other industrial sectors over ten years, and got the user¡¡¥s high praise. Recently, the 220kV level on-load-tap rectifier transformers supporting the country¡¡¥s largest 600 thousand project of caustic soda is done, and got the high praise of users. fumigation wooden case
Our company provide 330kV oil-immersed power transformer ,with capacity of 360MVA and below. The transformer is based upon world-wide advanced technology and also incorporates the experiences of internationally leading transformer companies as well as our own long-term experiences. Low loss, low partial discharge and high short circuit withstand capability series transformers are achieved through innovation and optimization. Our transformer conform entirely with latest national standard GB1094.1~2-1996, GB1094.3-2003, GB1094.5-2003 and international standard IEC-76. Outstanding features as follows: 1. Low loss, low noise The core laminations are composed of imported high quality grain-oriented cold-rolled silicon steel sheets with chamfered joints and the joints are step-lapped with 5 steps, thus ensuring low loss and low noise. The inside of the tank is lined with magnetic and copper shields, measures have been take for metallic structural pares located in high magnetic field, to deduce stray loss and thereby the total load loss, and to relieve local overhearing. Performance standard of 330kV class transformers which designed and manufactured by our company, can reach GB 10-type or GB11-type, and the noise is much lower than GB. 2. Safe and reliable service Reliability is the everlasting objective of our company, partial discharge of finished products are constantly kept below 100pC, ensuring that the transformers can be operated under long service voltage and occasional over-voltage without trouble. Low current density in winding conductor and appropriate cooling arrangement ensure that the winding temperature rise and top oil temperature rise are lower than that specified in the national standard by more than 5K and that the mechanical stress in winding conductor during short circuit does not exceed certain safe limit. Together with technological procedures during manufacture and other means to elevate mechanical strength, transformers can withstand server short circuit in all case during service. 3. Easy erection and maintenance To minimize erection work at sit, transformers are so fabricated that lifting the active part out of the tank for inspection after arrival at sit is not mandatory. Beside, all components to be mounted on the transformer at site have been preassembled before dispatch, and all secondary wirings have been laid down into conduits on the transformer and connected to the terminals in the control cabinet or terminal box. Natural oil circulation and forced air cooling (ONAF) are generally adapted in our 180kV class transformers below 240MVA. 70% nameplate rating can still be achieved in case the fans are out of service. Little maintenance work is required for the cooling devices. 4. Careful fabrication Vertical winding machines with tension device are used for winding, so that the windings can be wound more tightly and therefore mechanically strength as a whole. All insulation parts subjected to mechanical stress during short circuit, such as spacers in windings are made with T4 densified pressboard to deduce shrinkage. Drying process for the windings are carried out twice, once for ht individual winding, and again for the assembled phase block. After core and coil assembly, an additional vapor phase drying (VPD) is once more carried out to ensure that all insulation parts are thoroughly dried and no further shrinkage is possible to occur during service. All the high voltage terminals and nearby metallic structural parts are rounded up to prevent partial discharge. High voltage bushing terminals are contained with turrets, and kept concentric with the turret. All the leads are properly crimped and metallized to be rounded up. VPD process insures that the moisture content within the transformer is kept at a very low level, and the core and coil assembly is once more cleaned by condensed vapor flowing down the surfaces. The fabricated tanks are relived from welding stress and shot-blasted integrally, so as to be free form oil leakage trouble and to give the tank a clean, pleasant looking appearance. fumigation wooden case
Amorphous c-core it has the advantages of low loss and high saturation magnetic flux density and is widely used in power transformers, high frequency inductors, reactors and other components. Performance features: Convenient for coil assembling excellence in anti-dc bias with high permeability and low coercivity, it can improve efficiency of the device, reduce the size; with low-loss, it can reduce temperature rise. good temperature stability enables it work for a long time at temperature of -50 ~ 130oc . High saturation magnetic induction (1.25t), high permeability, high inductance ( 10 times of the amount of ferrite inductors), low loss, small size, light weight, strong anti-electromagnetic interference capability, excellent frequency characteristics , and high temperature stability Eh company product id Core DimensionsInductance
230-242kv on-load-tap-changing power transformer is made of high-quality silicon-steel sheets, and laminated by steps. It is advantageous in low loss, low noise, low voltage partial discharge and high anti short-circuit capacity. The dynamical and thermal stability of this transformer, of which the coils are winded by high-quality oxygen-free copper wire as well as used pre-compressing brackets processes and interior and exterior structure. The transformer tank used wave form shell, has very nice appearance, the core is with d shape yoke and 45 angle seaming. The core and oil box are well fixed and well protected on moving. Packed in wooden case
The core of 110kv power transformer is high quality silicon steel, with several layers lapped. It is low loss, low noise, and anti-shortcut etc. Now it is wildly used in power station, power plant, and gets high praise from them. In 1997, sfsz9-31500/110 on-load voltage-regulated transformer has passed the test by ministry of mechanical industry. Main functions and characters: • bell type tank and the wave form shell.; increase the strength of oil box, beautiful appearance; • core is with d shape yoke, 45 angle seaming; • core and oil box are well fixed and well protected on moving; • reasonable wrapping method, in the interior and exterior structure of coil; use support; hard paper bucket between coils increases the capacity of anti-shortcut; • advanced assembling method such as cold pressing and welding technology, installing with sets of coil, paper bucket production. Packed in wooden case
35kv grade transformer is with the following characters: low loss, low noise, protection for thunder and lighting, and anti-shortcut capacity, beautiful appearance etc. It is made by advanced assembling lines and method, with qualified parts. It is with for remote functions: remote communication, remote test, remote adjustment, remote control. By remote control from a computer, the power station could be free from supervision in the office. Type "9" 35kv grade series energy saving transformer has passed the test by national mechanical and industrial bureau, and national power group. 35kv grade series transformer mainly use in power network, and the projects of power distribution. Main functions and characters • core is with advanced three steps: vertical and horizontal and horizontal cut, lap and multi-stage. It disperses the air distribution, improve the magnetic path. Decrease the empty loading loss, current and noise. • core with dragged panel, pressed the coil, particular glue for silicon steel; a set of measures to increase the mechanical strength. • new structure of high and low voltage wrapping, reasonable arrangement for oil tube and connection, increase the capacity of mechanical strength and anti-shortcut. • oil box is bell type or core suspension type, the wall of oil box is as wave form. Packed in wooden case
New 39 series three phased oil-immersed transformer uses new structures of insulation and anti-shortcut etc. Its features are advanced internationally. Comparing to s7 series, the empty loading loss decreases 10.25% in average, empty loading current decreases 37.9%, loading loss decreases 22.4% in average, it is the upgraded version for energy saving. Main functions and characters • low loss, energy saving visible; • core is in round form, multi-stage, and entire tilted three stages seaming and lapping structure; • high and low voltage coils are wrapped with oxygen free copper coil. All high voltage coils are made with several layered bucket structure. • reasonable structure • new parts and new fixing parts Packed in wooden case
Features: • high voltage coils are wrapped with polyester enameled wires, filled with glass fiber, and then resin under vacuum condition. It becomes solid under high temperature. It is with high mechanical intensity, low discharge partly; low voltage coils are wrapped with a whole piece of copper foil, with strong anti-shortcut capacity. The core is made of silicon steel. By reasonable choosing magnetic density, decrease the empty loading loss effectively • fire protection, anti-explosion, and no pollution • coil is free from humidity, low noise and capacity of heating dispersion • low loss, energy saving, free from maintenance, small volume, light, and easy for installation Packed in wooden case
The busway is used for the electricity transmission from the electric power transformer to the main distribution screen or from the main distribution screen with a current transmission capacity of 3000a. Product details
Tianjin New Ventech Electronic co.,LTD was established in 1993, which is a professional China manufacturer on variety electronic transformer including coil inductors, PCB mount transformer, toroidal transformer ,high voltage transformer etc. Now we have more than 800 staff, in which there are nearly 60 technical engineers, and 80% have more than 20 years experiences. With continuous hard work, our r&d department researched 8-10 kinds new products averagely every year, and now we have strength to custom-made as per your demand.Our products include: 1.Toroidal transformer 2.PCB mount transformer 3.Common mode choke. 4. Switching transformers 5.low frequency transformer 6.high frequency transformer 7.high voltage transformer We are certified of RoHS, UL, CE environmental protection standard, ISO9001: 2000, ISO14001: 2004 and ect. We offers high quality products with the most competitive price. It is our company's basic of success. The operation idea of our company is do everything we can, satisfy customers'need. Under working hard in this principle, we become a popular manufacturer by customers, investors, and partner company.This site is constantly being updated. If the information you require is not shown please contact us directly. The size of the pallet is 80*120mmm carons on the pallet.
SMD fax modem telecom transformers SMD audio meets UL 1950 or EN60950 telecom transformer Frequency range: 20Hz to 20kHz audio telecom transformer Frequency response: í+3dB maximum Data rate: V.22 to V.90 matching telecom transformer Fax modem telecom transformers Toroidal civil AV audio power transformer Dependable professional audio telecom transformer Multimedia active audio telecom transformer Quiescent civil AV audio telecom transformer Congruent civil AV audio telecom transformer Adequate civil AV audio telecom transformer 2,400bps to 56.6Kbps (V.90) and PCMCIA applications Isolated telecom transformer Technical properties of 600:600 ohms telecom transformer Over 1,000 transformers for modem application Audio transformer used in telephone systems and PABX systems Designed to meet UL 1950 or EN60950 telecom transformer Compact sizes from EE-8 to EE-24 telecom transformer Other types of audio transformers made with RM, EP, EPC or others telecom transformer
Technology: C.R.G.O. transformer Input Voltage: 140vac ~ 260vac Input Frequency:50/60Hz Output voltage:220vac(110V/120V/230V/240V version optional) Output accuracy:í+8% Efficiency:98% Phase: single phase. 233*110*152MM 2.25kg.
In the metallurgical industry, furnace transformer is used for Melting quality alloy steel and iron alloy. In the chemical industry, it is used for manufacturing yellow phosphorus, calcium carbide and synthetic resin. In the machinery industry, it is used for melting cast steel and iron. Furnace transformer is a professional transformer which is designed according to varies furnace's working principle, loading characters and operating features. It is included: Varies AC electrical arc furnace transformer such as steel making arc transformer, Steel ladle refining furnace transformer, submerged arc furnace transformer, line frequency furnace, and DC furnace transformer such as intermediate frequency furnace transformer, silicon carbide and graphitization furnace transformer. It is also widely used in building materials industry and glass making industry. Technical Parameters: Primary Voltage: 380V Secondary Voltage:60-75-104-130V For more in formation pls refer to our website 3w hslec com Also u can add my MSN adazq at live cn to get more information.
TC Step-up/down transformer Tc step-up/down transformer is specially designed for such electroelectronic equipment whose rated ac voltage different from that of the local netvoltage.They are safe for use within the rated voltage range.Input voltage:ac110v or 220v with double-connector power cord output voltage:ac220v or 110v. The transfomer is anideal ac step-up/down power supply, with advantages of no wavform distortion, high efficiency, elegant appearance, ease of use , effective operation for a long term, etc.It is sulitable for imported electrial appliances.
JBK3 machine control transformer Use products It is suitable for AC circuit of 50-60hz,output rated voltae less than 220V,inputrated voltage less than 500V,worked as control power supply for mechanical equipment and general electrical appliance and as power supply for work lighting and signal lamp.
Customized sizes are accept Small, medium, and high quantity available Wide frequency range Please send universal purpose Low no-load losses Low mechanical hum Low stray magnetic field Low operating temperature Low height Easy to mount Ranges from 10 to 12,000VA Mainly designed for: Audio equipment ;Medical use ;Power sources ;Lighting purpose ;General purpose applications and security ;custom-made according to customer's specifications
Customized sizes are accepted Small, medium, and high quantity available Wide frequency range Please send universal purpose Low no-load losses Low mechanical hum Low stray magnetic field Low operating temperature Low height Easy to mount Ranges from 10 to 12,000VA Mainly designed for: Audio equipment ;Medical use ;Power sources ;Lighting purpose ;General purpose applications and security ;custom-made according to customerÆs specifications
Large transmission power, low loss,wide frequency range, stable performance, low temperature rise.Application: Used for electric apparatus, aerocraft, transmitter, computer, communication equipment and TV
Outpower is above 0.6w to 1000w.All with UL certificate
