Three-phase transformers are used to convert the available 3-phase mains voltage into any load voltage.
To cater for the wide range of application areas involved,these transformers are essentially available in
the same kinds of designs as the single-phase transformers, e.g.
Three-phase dry-type transformer:
separate winding version
Three-phase series transformer:
autotransformer winding version
Three-phase safety, isolating, mains or
insulating transformer: separate winding version
In terms of how the 3 coils are connected, there are various options available and each of these provides
the transformers with specific properties. The vector group code is composed of the following elements:
The upper-case letter indicates the higher-voltage winding
(the highest voltage in terms of operation).
The lower-case letter indicates the lower-voltage winding.
The brought-out neutral is indicated by means of N or n
(depending on voltage level).
â?¢ The distinctive number indicates the phase angle of the lower voltage
in relation to the higher voltage (distinctive number multiplied by 30).
The following winding connection options are available
Delta: D, d
Wye (or star): Y, y
Zigzag: Z, z
Example: Dyn5
Higher-voltage winding is delta-connected.
Lower-voltage winding is star-connected with a brought-out neutral.
The lower voltage lags behind the higher voltage by 150�° (5 x 30�°).
Unless specifically requested otherwise, the transformers are configured with a double-star connection
and a brought-out neutral (vector group Yyn0); for autotransformers the vector group is YNa0.
Our three-phase transformer range includes all our standardised types for the 25 30.0 kVA performance range and a frequency of 50/60 Hz
Various Transformers manufactured in South Korea
H grade non-encapsulated insulation dry type transformer (sg) Dry type transformer Our factory h grade non-encapsulated insulation three-phase dry type transformer is manufactured with nomex insulation material which approbated by ul, and has many advantages of safe, reliable, energy-saving, fire-proof, explosion-proof, easy to maintain. Its design is advanced, structure is reasonable, appearance is pretty. Meanwhile, its main performance are superior to domestic standards, such as partial discharging level, no-load loss, with-load loss, low noise and can work under conditions with high damp, etc. It can be installed in areas with large load, be suitable for high-rise buildings, airports, railway stations, docks, subways, hospitals, electricity factories and so on. Characteristics of h grade non-encapsulated dry type transformer: 1, the elaborate designed coil structure and vacuum immersed treatment enablesg(b)10 transformer partial discharging volume be very small, less than or equal to 5pc. No crack performance will be found during the whole service life, and its insulation level will be kept as good as beginning . 2.The high voltage part adopts continuous wire winding. Lv foil winding, vacuum immersed, curing processed and high strength ceramics supporting, with fine withstandcapability to paroxysmal short-circuit current 3.Flame resisting, flameproof, nontoxic, self-extinguishing, fireproof. 4. When burn in high temperature and open fire, almost no fume will be produced 5. Insulation level of the transformer is h gradeâ 6.The insulation layer is very thin, with strong shorttime over load capability, needlessof forced cooling, can be overloaded for 120% for long term and 140% for 3 hours. As this kind of insulation material has elasticity and will not be aged, it can be full loaded at once under suitable conditions.
SGB (DGB) series three-phase (single-phase) dry-type, isolating, voltage transformer is a multi-coil (double coil and above) structure voltage transformer, the primary and secondary windings are insulated from each other. Its transformation ratios are of fixed and tapping type, which enable voltage bucking and boosting. It can also electrically isolate input and output windings from each other to avoid risks of simultaneous access to electrified body (or electrified metal parts due to insulation damage) and ground hazard. Besides, it also has certain inhibiting effect of various kinds of interference.
1. Low energy consumption: The� adoption of isotropic soft magnetic material generates low magnetization power, high electrical resistivity and low eddy current consumption. The no-load loss and current of the core made of amorphous alloy are very low, only 1 / 3 of that of silicon steel sheet. 2. Strong corrosion resistance: the amorphous alloy core� is fully wrapped by resin and high temperature resistant silica glen� which� effectively prevent corrosion and falling off amorphous alloy fragments, and� provide better� protection for the core and coil. 3. Low noise. Improvement of� the structure of iron core and coil and� adoption� of special noise -reduction materials greatly reducing the operation noise. 4. Strong short-circuit resistance. This� product adopts three-phase five-column structure, and the iron core is protected by frame structure. Featured by low temperature-rise and strong heat dissipation, this� product� can work� by� 150% rated load under air cooling condition. Perfect temperature control protection system is applied� to provide reliable guarantee for safe operation of transformer
1, The core components are all imported, adopting the sixth generation IPM module from Mitsubishi, which has stable performance, long service life, strong protection functions and convenient replacement and maintenance. 2, Adopt the central processor DSP28335 chip from American TI Company, respond quickly and accurately, and provide stable and clean power for the load to provide protection. 3, The whole machine adopts modular design and plug-in design, which is convenient for maintenance and reduces the hidden cost of machine failure to repair. 4, According to the product configuration conditions, adjustment the system usage mode: DC(Battery/Solar) priority or AC mains bypass priority can be set. 5, Two kinds of start mode: Reduction Voltage Start and Variable Frequency Start. Customers can set start mode according to the type of their load. This function is very convenient for users and also reduce frequency converterâ??s usage, which reduced the cost of equipment investment, easy to connect wires and control. 6, The output voltage can be set between -40 % to +20 % of rated voltage. And the output voltage is very accuracy �±1%. 7, The DC input voltage range can be set. Over-voltage point, under-voltage point, over-voltage recovery point, under-voltage recovery point all can be setting via the LCD panel. 8, Output AC Power is suitable for all types of electrical equipment, CNC machines, electric tools, motors, pump and air conditioner etc. It has higher efficiency and higher capability of driving load. 9, Humanized safety design, using isolation transformer design, input and output are completely electrically isolated, input and output are equipped with circuit breakers, which saving costs for the user and easy to installation, the electric parts are completely closed to prevent electric shock. 10, Wide input voltage can be set according to customer's requirement. Input voltage range can be selected from 100-300V, 200-500V or 500-850V, suitable for solar/wind system without backup batteries, it can save many cost and maximization use the solar/wind energy. 11, Using SVPWM space vector algorithms, high conversion efficiency, high instantaneous power and low losses conversion efficiency up to 94%. 12, Powerful data display function. LCD + LED display, can display input and output voltage, current, KWH, fault display, convenient for customers to quickly find faults and guide maintenance. 13, European CE (EMC, LVD, UL1741) and ISO9001 certificates. [Optional] A, RS485 communication; B, AC bypass complementary function; C, Built-in charger
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PION range of low voltage transformers comprise of double wound and custom designed transformers. PION transformers are available in open enclosed, oil cooled models to suit the customer requirement. Air cooled transformers are available in Open and Enclosed models. The enclosed models are supplied in sheet steel enclosures. Louvering is provided for the heat dissipation of the generated heat. Oil cooled transformers are housed in MS Tank and provided with adequate pressed steel radiators to ensure proper heat dissipation Oil cooled units are available with standard accessories viz. oil level indicator, drain plug / drain valve, earth terminals, unidirectional CI wheels, Oil fill hole and terminal covers.
Our capability: -we can design, manufacture, testing various kinds of transformers up to 5000kva according to iec standards, ansi standards, bs standards, en61558 standards and technical specifications from client. -we have exported our transformers to usa over $700, 000 every year. Our major products: -oil immersed distribution transformers up to 5000kva. -dry type transformers up to 5000kva. -isolation transformers: three phase from 100va to 5000kva and single phase from 25va to 500kva. -auto transformers: three phase from 100va to 5000kva and single phase from 25va to 500kva. -medical transformers up to 1600kva. -toroidal transformers up to 100kva. -auto voltage regulator(voltage stabilizer) up to 5000kva. -eps, ups transformers. -rectifier transformers. -control transformers. -reactor is included: Parallel, serial reactor. Filter reactor. Starting reactor. Dc reactor. High frequency resonant inductance.
Your search for three-phase transformer manufacturers ends at trutech products. Our offered transformer is the perfect example of technology and modernity. To search out more details about the product and price range of each unit, be in touch with us.
