The on-load tap changer is the only moving part connected with the transformer circuit so more and more attention has been paid to the detection of the on-load tap changer.In the electrical equipment handover and preventive test regulations it is required to check the action sequence of on-load tap changer measure switching time etc.This device is mainly used for measuring the transition waveform transition time transient resistance of transformer on-load tap changer three-phase synchronism etc. product names On - load tap - changer tester transformer on - load tap - changer tester transformer on - load switch tester
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
1.Dry transformers with high and low voltage windings are coated by a thin layer of epoxy resin.It has the advantages of flame retardant, self-extinguishing, moisture-proof, heat dissipation and so on. 2.Equipped with a low-noise air-cooled device, the fan can be automatically controlled to start and close through the thermostat, so that the transformer can be operated with a 40% increase in capacity. 3.It can go deep into load centers, such as high-rise buildings, airports, wharfs, power plants, residential communities or complete sets of substations. 4.The temperature sensing element and the sensing system embedded in the low voltage winding can start and turn off the fan or alarm or trip according to the set value for protection.
100kva electrical power transformer price Ai Power offers three phases, oil immersed, and naturally cooled distribution and power transformers. Our products from 10kva to 20000kva with a maximum voltage 35kv are manufacture under the standard of IEC60076. The windings are made of high-grade electrolytic cooper and are concentrically positioned. Usually copper foil is used for the low voltage windings. Round shaped, enamel insulated wires is used for the high voltage windings.
S11 SERIES POWER TRANSFORMERS The capacity range of 10kV class S11 full seal power transformer is 30kva-2500kva. In 10kV, 50Hz power transmission and distribution system, it can be widely used in high-rise buildings, commercial centers, subways, airports, stations, industrial and mining enterprises, drilling platforms, especially in places with high fire protection requirements such as inflammables and explosives, and in places with poor environment. It can also be used for power and lighting in residential areas, commercial streets and rural areas. Advantages: S11 type fully sealed oil immersed transformer is the main type selection product of current distribution equipment, with remarkable energy saving effect. The S11 distribution transformer produced by our company uses 30p series high conductivity oriented silicon steel produced by well-known enterprises, and adopts new insulating materials and processes. The products are resistant to high temperature and impact. The integral mailbox composed of corrugated radiator is produced by phosphating and multi-layer antirust spraying technology, which has good weather resistance.
On the basis of the S9 series, the S11 series products have an average no-load loss of 20%. The no-load current is 70-85% lower than the S9. The temperature rise is reduced by 10K, and the service life is more than doubled. Even under the load of 20%. it can still be used for a long time. The running noise is reduced by 2-4 decibels. High and low voltage windings, body assembly, fuel tank structure, protection device, etc. are similar to S9 series transformers. It also adopts non-suspension structure, adopts vacuum drying, vacuum oil filtering and oil filling process, adopts corrugated oil tank, and has no oil storage cabinet and other structures.
Transformer can transformer the voltage of a network into the voltage matching the system or load and fulfill power transferring and distributing.Taking the place of transformers with silicon steel core, AMDT can be widely applied in outdoor power distribution networks systems, which is magnificently energy saving and can lessen air pollution. It is especially applicable for areas with insufficient power supply and fluctuating load and where daily maintenance is hard. Since the transformer adopts a fully sealed structure, the insulating oil and the insulating medium are not polluted by the atmosphere, so it can be carried out in a humid environment, making the ideal power distribution equipment in the urban and rural distribution networks.
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
Dry-type transformer has the advantages of large short-circuit resistance, little� maintenance work, high operation efficiency, small dimension and� low noise,� which is commonly used in places with high requirements of� fireproof� and explosion-proof.� This type transformer is widely used in local lighting, high� buildings, airports, docks, CNC machinery and others. � Its cooling methods are divided into natural air cooling (AN) and forced air cooling (AF).� The transformer can operate continuously for a long time under rated capacity� under natural air cooling.� Output capacity of the� transformer can� increase by 50%� under forced air cooling.� It is suitable for intermittent overload operation or emergency overload operation. Due to the load loss and impedance voltage increase significantly when overload, it is not suitable for long time continuous overload operation.
Dry-type transformer has the advantages of large short-circuit resistance, little� maintenance work, high operation efficiency, small dimension and� low noise,� which is commonly used in places with high requirements of� fireproof� and explosion-proof.� This type transformer is widely used in local lighting, high� buildings, airports, docks, CNC machinery and others. � Its cooling methods are divided into natural air cooling (AN) and forced air cooling (AF).� The transformer can operate continuously for a long time under rated capacity� under natural air cooling.� Output capacity of the� transformer can� increase by 50%� under forced air cooling.� It is suitable for intermittent overload operation or emergency overload operation. Due to the load loss and impedance voltage increase significantly when overload, it is not suitable for long time continuous overload operation.
1. The low-voltage winding is of cylindrical or spiral structure, with high mechanical strength and good short-circuit resistance. 2. The corrugated oil tank is adopted to replace� the oil conservator. The oil tank cover and the oil tank are all-welded along the edge or fastened with bolts, thus prolonging the service life of the transformer oil. 3. After oil removal, embroidery removal, and phosphating treatment, the product is sprayed with three times of primer and one time of finish paint inside and outside. The product is salt fog proof, damp heatproof, and fungus� proof, which can meet the special requirements of metallurgy, petrochemical system, and wet and polluted areas. It is beautiful� and reliable. 4. The transformer oil tank is� fully sealed, and� equipped with� pressure reducing valve, signal thermometer, gas relay, etc according to the standard requirements to ensure the safe operation of the transformer. 5. This series of products are beautiful in appearance, small in size, and can reduce the installation area. It is an ideal maintenance-free distribution product.
1. The transformer core is made of imported high-quality cold-rolled silicon steel sheet, which greatly reduces no-load loss and no-load current. The core is� tightly� bound to ensure the compactness and reduce noise. 2. The high and low voltage windings are� made of oxygen-free copper. The low voltage winding of 500KVA and below is of double-layer cylinder structure,� of 630kVA and above adopt double helix or four helix structure. High-voltage winding adopts multi-layer cylinder structure. 3. Dyn11 is used in the transformer connection group to reduce the influence of harmonics on the power grid and improve the quality of power supply. 4. The transformer is a fully sealed structure, with three coats of primer and one coat of finish paint applied on the inner and outer surfaces. The product is salt fog proof, moisture� proof and fungus-proofing, beautiful, durable and reliable 5. The measured noise value is lower than the standard and maintenance free under normal operation.
As the most widely used power facility, power transformers have a wide variety of types and are of great significance to energy conservation and emission reduction. The S13 fully-sealed oil-immersed power transformer is currently the main selection product for power distribution equipment, with significant energy-saving effects. At present, mainstream distribution transformers generally use S13 laminated core power transformers. It adopts a fully oil-filled sealed type, no oil conservator, and a corrugated sheet box structure. The volume of the transformer changes due to changes in temperature and load, which is completely adjusted by the corrugated oil tank. Its no-load loss is much lower than that of S9, and it is resistant to lightning impact It has strong short-circuit resistance, obvious energy-saving effect, and reduces the overall size of the transformer. The S13 transformer is made of high-permeability oriented silicon steel sheet with a thickness of 0.27-0.30mm and a unit iron loss of 1w/kg, while the new S9 type is an ordinary silicon steel sheet with a thickness of 0.30-0.35mm and a unit iron loss of 1.20 -1.55w/kg. The S13 distribution transformers produced by our company all use 30P series high-permeability oriented silicon steel, using foil-wound coils and new insulating materials and processes. The product is resistant to high temperature, impact, and fully sealed structure design to ensure the stability of transformer oil quality It prolongs the maintenance cycle. At the same time, the integral fuel tank composed of corrugated fin radiator is produced by phosphating and multi-layer anti-rust spraying process, which has good weather resistance.
Product introduction This product conforms to the national standard gb1094.1-2013 power transformer and GB / t6451-2015 three phase oil immersed power transformer technical parameters and requirements.� This product has adopted a series of major reforms in material, technology and structure, so that the electrical performance of the product can reach the advanced level of similar products. With the characteristics of high efficiency and low consumption, it can save a lot of power consumption and operation costs, and has remarkable social benefits. It is a new product promoted by the state. It is also one of the more popular products for users.
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Rectifier transformer
Features: Wide range of system current Ratings Hinged terminal cover Various mounting options like DIN rail mounting, Wall mounting Terminal with self lifting screw with dual connection facility giving access from both sides of transformers
Hebei Anmei produce kinds of DIN standard , ANSI standard , AS standard transformer bushing insulator, oil level gauge and transformer accessorise
Used transformers
