260MVA/800kV single phase water cooling main transformer for the hydro power station

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 pc

Supply Capability:: 1 pc/month

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Quick Details

Place of Origin:	HeBei	Brand Name:	CNBM	Model Number:
Usage:	Power	Phase:	single	Coil Structure:	Toroidal
Coil Number:		Capacity:		Rated Voltage:	260MVA/800kV
Connection Symbol:	YNd11 Dyn11 YNyn0d11	Tank:	Cover type or Bell type	OLTC:	MR or ABB or SMS

Packaging & Delivery

Packaging Detail:	Mainbody --naked Disassembled parts -- crate
Delivery Detail:	3 months

Specifications

1. CESI certificate
2. High short-circuit withstand
3. Low loss, PD and noise
4. CTQC certificate
5. No leakage

Description

The application of the 260MVA/800kV single phase water cooling main transformer for the hydro power station.can significantly improve the economy of the OLTC substation, and matches well with the transmission capacity of OLTC lines, which has wide prospect of application. Because of its large capacity and large volume, the whole transportation weight with nitrogen is about 470-490 tons, and due to the restricted transport conditions, the transportation becomes the critical issue for the 260MVA/800kV single phase water cooling main transformer for the hydro power station. In order to make the products applicable to any OLTC substation in our country, the state grid of corporation of China set the "A study of easy-transport large capacity OLTC Transformer” as a key scientific research projects, and entrusted BTW to carry out the research.

During the process of research and development, BTW adopted the advanced design technology and modular design, the transformer can be transported disassembly and with advantages of compact core and winding body, less transportation weight and low transportation cost, effectively solves the need of OLTC construction in the transportation restricted areas. By using the most advanced 3D magnetic field calculation software, BTW performed detailed analysis and calculation for the magnetic flux leakage and eddy current loss of the transformer coil, iron core and oil tank steel structures. Besides, by using of the advanced electric field calculation software, BTW performed detailed analysis and calculation of main longitudinal insulation, and mastered the arrangement of the main longitudinal insulation of large capacity OLTCtransformer and the control of distribution of winding magnetic flux leakage. All of which make the products with low loss, low noise, small volume, strong anti short circuit ability, no local overheating and other significant advantages, and guarantee the long-term safe and stable operation.

The world's first on-site assembled large capacity OLTC Transformer’s right at the first time once again filled the gap in the field of OLTC transformer research after Chinese transformer industry overcame the difficulty of integral transport of the 260MVA/800kV single phase water cooling main transformer for the hydro power station, which marks BTW has fully occupied the world transformer industry technical peak. The successful development of the product filled the gaps in the domestic technology and met the urgent need of OLTCconstruction application in our country, greatly improved the technical level and manufacturing ability of BTW in terms of OLTC Transformer products.

Q: Transformer parameter interpretation: C, rated current (A): transformer in the rated capacity, allowing long-term through the current. D, no load loss (kW): when the rated frequency of the rated voltage applied to the end of a winding, the other winding open when the active power. And the core silicon steel sheet performance and manufacturing process, and the applied voltage. E, no-load current (%): When the transformer in the rated voltage under the secondary side of the load, the current through a winding, generally expressed as a percentage of the rated current. F, load loss (kW): the transformer secondary winding short circuit, in a winding rated tap position into the rated current, then the power consumption of the transformer. G, the impedance voltage (%): the secondary winding of the transformer short circuit, in a winding slowly increase the voltage, when the secondary winding short-circuit current equal to the rated value, then the voltage applied once the general. As a percentage. H, the number of phases and frequency: three-phase beginning to S said, single-phase start with D said. China's national standard frequency f is 50Hz. Foreign countries have 60Hz (such as the United States).

Q: I know that the ratio of primary turns to secondary turns is the multiplying factor in voltage. So if you wanted 100,000 volts from a 10 volt source could you potentially do this:4 transformerseach transformer has 10 coils in primary and 100 in secondaryThe output of each transformer's secondary is connected to the primary of the next transformer so that you get 10*10*10*10 or 10,000 as your multiplying factor.Would this work?or do you have to do it the hard way and wind 10 coils in the primary of a single transformer and wind 100,000 times in the secondary?: It is not practical to use 4 transformer in cascade. using four same transformers will not work too. If you really want to cascade the transformers you need to do as follows, Let say you are using the transformer which has 1 turn/volt. All 4 transformer must be same capacity , same turn ratio ,but different voltage in/out (different coil size) 10 volts 10 turns , 100 volts 100 turns First transformer will have 10turns/100 turns , you have 100 volts output this will feed to second transformer which must have 100 turns/1000 turns and output is 1000 volts third transformer will have 1000 turns/10000 turns output is 10000 volts and finally fourth transformer has 10000 turns/100000 turns and you will get 100000 volts. As you see you will not save, instead you need to spend more.

Q: i went to see transformers on july 3rd. they had about 5 or 6 previews before the actual movie started. the very last preview showed and party to someone called bob. he was leaving, going to japan. then the lights went out and a big groan was let out and a earthquake happened. they all went out to the roof, and in the distance, a big orange ball was exploding, shooting out fireballs and lava. they only said it was coming out on january 18 2008, and they didn't give the name.please help, i need the name of this movie: No okorder

Q: i heard that there is a new transformers out and i do not know if it is good,so can you help?: My rate: 5 out of 10

Q: This transformer outputs AC or DC: Hello, the transformer is normally working when the input and output should be alternating current, some inverter transformer input may be pulsating DC, but the output must be AC. Because the transformer is by electromagnetic conversion to achieve voltage conversion, the primary changes in the current to produce changes in the magnetic field, through the magnetic field changes in the magnetic flux in the secondary electromagnetic induction, induced secondary electromotive force, is the secondary output. Pure DC power through the transformer coil can produce a magnetic field, but can not produce a continuous change in the magnetic field, and the transformer from the primary induction to the secondary, the medium is the change of magnetic field changes in the magnetic flux.

Q: I need a (step-down) Transformer of the following specifications:240VAC to 24VAC 10A or 240VAC to 24VDC.(Output as 24VDC would be better/easier).I live in Victoria, Australia and need one ASAP (next 3 days or sooner)Plz tell me any store or so Also, if u wanna know the VA Rating, its 240VA.If 10A is not available then anything closest to it. say 9 or 8.5 or 8 or 6.5.Cheers!: Transformers only work with AC, so the second choice is not possible. But you can buy power supplies that have a DC output. Reference has one possibility. Search google for buy supply 24v 10a and you will find lots more. .

Q: How to build inverters using ferrite core transformers, details assemblies.: Transformers are only tangentially related to inverters. You don't need a transformer to make an inverter. At its most basic level, an inverter is just a couple of switches. This kind of simple inverter will only output a square wave with amplitude equal to the dc voltage input. To get a sine wave, you would filter the output with a capacitor and an inductor, and to change the amplitude of the wave, you would use a transformer (or alternately place a boost/buck converter before the inverter). If you're going to use both an LC filter and a transformer, you can save on parts by using the magnetizing inductance of the transformer as the inductance of the LC. This is all well and good, but it takes a lot of math and analysis to actually size all of the components. If you're really serious about this, you should find a good textbook and read up on everything.

Q: I thought the movie was great, but the death of Megatron seems really rushed and just unsatisfying? Agree?: I like the new Transformers but if he and the future bad guys lives, then they will stretch out the series and from story to characters, things will get crappy and I don't think anyone would want that.

Q: I think the power supply to my external hard drive has failed. Is there anyway I could replace the transformer. There is no way to contact the manufacturers as they have the worst customer services ever (Formac). I have emailed them 5 days ago without a reply.: call optimus

Q: I purchased a doorbell in Europe, it has a transformer that goes from 220V to 14.8V, will the transformer work on 110, or do I have to replace the transformer?: It shall not work on 110V. But you can feed the 240V find inside the power panel to this transformer to make it work. USA power system has both 120V and 240V existed in the power breaker box.

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