Electrical laminated wood is mainly used for transformers; it is also the insulation material and support material of mutual inductor. Besides, it can be used to make winding clamping plate, iron core plate, trapezoidal plate and clamping device. And it has many advantages, such as proper specific weight, high mechanical strength, good compatibility with transformer oil and easy machining. In addition, its dielectric constant is close to that of transformer oil and the insulation coordination between them is proper. It can be used in transformer oil under 105â?? for a long time.
Electrical laminated wood sheet is widely used in manufacturing some devices for oil-filled transformer, such as upper and lower pressure plate, lead bracket and iron yoke cushion block. And it is used to make clamping device in mutual inductor. It can replace steel plate, insulation paper board, epoxy paper board and epoxy fiberglass board, which can lower the weight of the transformer and the cost of materials.
HVDC transformers are key components of HVDC stations. HVDC converter and inverter stations terminate long-distance DC transmission lines or DC sea cables. This type of transformer provides the interface between AC grids and high power rectifiers and are used to control the load flow over the DC transmission lines. These actors adapt the AC grid voltage to an adequate level which is suitable for feeding the valve system of DC converter and inverter.
Design options
The design concept of HVDC transformers is mainly influenced by the rated voltage, rated power and transportation requirements like dimensions, weight and mode of transportation.
Many large power HVDC converter station are located in rural areas of low infrastructure. Frequently, special geometrical profiles have to be fulfilled in order to move such transformers by railway.
Typically, HVDC transformers are single phase units containing 2 winding limbs. This concept can include either 2 parallel valve windings (two for delta or two for wye system, fig. 5.8-1) or two different valve windings. In order to reduce the total transportation height frequently the core assembly includes 2 return limbs. Due to redundancy requirements in HVDC stations 3 phase units are quite uncommon.
The valve windings are exposed to AC and DC dielectric stress and therefore a special insulation assembly is necessary. Furthermore, special lead systems connecting the turrets and windings have to be installed in order to withstand the DC voltage of rectifier. Additionally, the load current contains harmonic components of considerable energy resulting in highe r losses and increased noise. Above all, special bushings are necessary for the valve side to access upper and lower winding terminals of each system from outside. Conclusively, two identical bushings are installed for star or delta system.
For approving the proper design and quality of manufacturing special applied DC and DC polarity reversal tests have to be carried out. The test bay has to be equipped with DC test apparatus accordingly and needs to provide adequate geometry to withstand the DC test voltage.
HVDC Transformers react as coupling elements between the connected AC grids and high power rectifiers, and are necessary for adapting the voltage. They insulate the rectifier itself from the AC grid and generate a phase shift.
New HVDC applications are seen between existing, well-established networks. A back-to-back link can easily combine two different AC networks together, even with different frequencies.
Such solutions can also help customers to strengthen and optimize their networks. The changing environment provides more and more opportunities to HVDC solutions, and Siemens is prepared to provide its customers with either our solution or with converter transformers as a loose component
Rated Capacity: 30~2500KVA
Our dry type transformers are in conformity with the following standards:
1. National Standard of China GB1904.11-2007Power Transformers
2. International Electro Technical Commission Standards IEC 60076-112004 Dry Type Transformers
3. German Industry Standard DIN EN 60076-11:2005 Dry Type Transformers
Scrap car plastic separation equipment
Scrap car article plastic separation equipment by conveyor, hanging magnetic separator, level of biaxial shredding machine, the secondary decomposition of high speed machine, guan wind machine, fan, bag filter, aggregate, high frequency vibrating screen, conveyor sorting machine, winding machine, electric machine and other equipment, automotive plastic pieces of plastic and aluminum completely separate, material recycling rates by more than 99.99%, separating plastic around 99.99% purity, quite a few times in the aluminium purity of about 99%, a full set of equipment for automatic control, without fire, water and chemical raw materials, the waste gas discharging standard, through processing is the national advocate environmental protection projects in recycling, replace the original manual, fire, water table or landfill pollution methods, such as the new technological process, the whole production line shall not exceed 65 db noise.
Company commitment: the company has sales of scrap car article plastic separation equipment has a perfect after-sales service, one year warranty, life-long maintenance, thoroughly solve your trouble back at home, please rest assured purchase!
Scrap car plastic separation equipment
Wire and cable separation and recycling equipment
The technology is mainly used for various waste copper electric wire communication cable, aluminum wire, electrical and electronic waste miscellaneous line, automobile and motorcycle miscellaneous line, copper-plastic compounds and so on.The materials are separated and recycled by the following process:loading, crushing, storage, feeding, decomposition, collector, vibrating screen, loading machine, specific gravity separation, electric separation and a series of process.The purity of plastic can be up to 99.7%, the recovery rate of copper can be reach 99.8%. The technology is physical dry separation without any chemical raw materials and water, and has no environment pollution. This process can also be used for aluminum-plastic board, aluminum-plastic pipe, medicine sheet, filter screen and so on. This process has won four national patents, patent number: 201110286092.0, 200810141172.5, 200910249968.7 and 200920276651.8.
Wire and cable separation and recycling equipment
Electronic waste disposal equipment , electrical and electronic waste recycling equipment, electronic waste recycling
Electronic waste, also known as e-waste, refers disused electronic equipment
A wide range of e-waste can be divided into two categories, one is contained in the species is relatively simple, less harmful to the environment of waste electronic products, such as refrigerators, washing machines, air conditioners and other household appliances as well as medical, research and other electrical appliances dismantling and disposal of such products is relatively simple, the other is contained in the material is more complex, relatively large damage to the environment of waste electronic products, such as computers, tv picture tubes in the lead, computer components contain arsenic, mercury and other harmful substances, the phone's raw material of arsenic, cadmium, lead and many other durable drop and bioaccumulative toxic substances.
E-waste recycling equipment is mainly used for various electrical appliances, electronic equipment, including refrigerators, air conditioners, washing machines, television sets and other household appliances and electronic products, computer communications, the process from feeding to sorting end, full automatic operation, only 1-2 man operation, the process is physically separated dry without heating, burning, drink chemical raw materials, low cost, high efficiency, no pollution of any separate dry at room temperature, this technique for my company registered patent, numbers are: 200820148816.9 200820148815.4 and 200810141173.X.
Promises: the company sells electronic waste disposal equipment have perfect service, one year warranty and lifetime maintenance, completely solve your worries, please rest assured purchase!
Electronic waste disposal equipment , electrical and electronic waste recycling equipment, electronic waste recycling
The transformer is composed of four parts: winding, iron core, fuel tank and insulating sleeve. Its main parts are winding and iron core (body). The winding is the circuit of the transformer, and the iron core is the magnetic circuit of the transformer.
The two constitute the core of the transformer - the electromagnetic part . The aluminum foil for transformer winding is the main material for making transformer windings, which directly affects the quality of the transformer. Transformer aluminum foil generally uses 3003, 1060, 1070 and 1050 aluminum. Welcome to get quotation by sending email
Medium power transformers with a power range from 40 to 250 mva and a voltage of over 72.5 kv are used as network and generator step-up transformers. Medium power transformers are also widely used to step up power from on- and offshore-windparks, and may even be installed in offshore-substations.
Bringing the energy safely to the consumer: a basic requirement applicable to all power transformers. However, every single one is unique designed according to individual factors such as voltage, power, climate, system topography, sound level and many more.
Small power transformers are distribution transformers from 5 to 40 mva with a maximum service voltage of 145 kv. They are used as network transformers in distribution networks. This type of transformer is normally a 3-phase application and designed according to national and international standards. The low-voltage windings should be designed as foil or layer windings. The high-voltage windings should use layer or disc execution, including transposed conductors. Normally, the cooling type of small power transformers is onan (oil-natural, air-natural) or onaf (oilnatural, air-forced). The tapping can be designed with no-load or on-load tap changers (nltc or oltc).
Bringing the energy safely to the consumer: a basic requirement applicable to all power transformers. However, every single one is unique designed according to individual factors such as voltage, power, climate, system topography, sound level and many more.
Large power transformers are in the power range above 250 mva, generator and network intertie transformers with off-load or on-load tap changers, or a combination of both, are recommended. Depending on the on-site requirements, they can be designed as multiwinding transformers or autotransformers, in 3-phase or 1-phase versions. Even with ratings of more than 1, 000 mva and voltages up to 1, 200 kv (800 kv), the feasibility limits have not yet been reached. We manufacture these units according to iec 60076 as well as other international and national standards (e.G., ansi/ieee).
Generator step-up (gsu) transformers
Gsu units transform the voltage up from the generator voltage level to the transmission voltage level, which may be as high as 1, 200 kv system voltage. Such transformers are usually ynd-connected.
In order to make an inquiry regarding a gsu power transformer, the technical data for the items in this section are required.
Step-down transformers
Step-down transformers transform the voltage down from the transmission voltage level to an appropriate distribution voltage level. The power rating of step-down transformers may range up to the power rating of the transmission line.
Medium power transformers with a power range from 40 to 250 mva and a voltage of over 72.5 kv are used as network and generator step-up transformers. Medium power transformers are also widely used to step up power from on- and offshore-windparks, and may even be installed in offshore-substations.
Bringing the energy safely to the consumer: a basic requirement applicable to all power transformers. However, every single one is unique designed according to individual factors such as voltage, power, climate, system topography, sound level and many more. Tinde power is your partner, who picks up these requirements converting them into convincing solutions with maximum quality. Power transformers that render their service reliably at site.
Large power transformers are in the power range above 250 MVA, generator and network intertie transformers with off-load or on-load tap changers, or a combination of both, are recommended. Depending on the on-site requirements, they can be designed as multiwinding transformers or autotransformers, in 3-phase or 1-phase versions. Even with ratings of more than 1,000 MVA and voltages up to 1,200 kV (800 kV), the feasibility limits have not yet been reached. We manufacture these units according to IEC 60076 as well as other international and national standards (e.g., ANSI/IEEE).
Generator step-up (GSU) transformers
GSU units transform the voltage up from the generator voltage level to the transmission voltage level, which may be as high as 1,200 kV system voltage. Such transformers are usually YNd-connected.
In order to make an inquiry regarding a GSU power transformer, the technical data for the items in this section are required.
Step-down transformers
Step-down transformers transform the voltage down from the transmission voltage level to an appropriate distribution voltage level. The power rating of step-down transformers may range up to the power rating of the transmission line.
System interconnecting transformers
System interconnecting transformers connect transmission
systems with different voltages together so that active as well as
reactive power can be exchanged between the systems.
Bringing the energy safely to the consumer: A basic requirement applicable to all Power Transformers. However, every single one is unique designed according to individual factors such as voltage, power, climate, system topography, sound level and many more. Tinde Power is your partner, who picks up these requirements converting them into convincing solutions with maximum quality. Power Transformers that render their service reliably at site.
