500MVA/765kV substation auto-transformer

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Place of Origin: HeBeiBrand Name:


Model Number:






Coil Structure:


Coil Number:

3 Winding

Capacity: Rated Voltage:


Connection Symbol:

YNd11 Dyn11 YNyn0d11


Cover type or Bell type


MR or ABB or SMS

Packaging & Delivery

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



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




The application of 500MVA/765kV substation auto-transformer  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 application of 500MVA/765kV substation auto-transformer. In order to make the products applicable to any  substation in our country, the state grid of corporation of China set the "A study of easy-transport large capacity  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 500MVA/765kV substation auto-transformer, 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 UHV construction application in our country, greatly improved the technical level and manufacturing ability of BTW in terms of OLTC Transformer products.


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Q:iz there a new transformers coming out?
Transformers 3 is estimated for a July 1, 2011 release.
Q:TransFormers Or Spider-Man 3 the best summer movie?
Neither. Pirates 3 was way better than Spider man 3, and I haven't seen Transformers so I can't pick it.
Q:Can someone explain transformers for me please?
The voltage is transformed up to thousands of volts and low current for minimum heat loss in the wires. Then down to low voltage at high current to the neighbor hood.
Q:Transformers manga?
Have you tried googling it? Good luck! I remember seeing Transformers in JPN since I was little I think they've been around since the 80s. At least I've seen the toys in JPN since then.
Q:What is transformer saturation?
The flux density in a transformer core is limited in the case of iron alloys to an absolute maximum at about 1.5tesla(15000gauss).(for most small transformers 10,000 gauss is the norm) So the design criterion is based on the formula:- V(rms) (4.44*B*N*F*A)/ 10^8 Where B is the peak flux density(in gauss), N is the total of conductor turns on the core,f is frequency,A is core cross section in square cm. If this is adhered to the no load current in the primary coil will be limited to about 0.5 amperes per Kg of core.If the core peak flux exceeds this only slightly the no load current climbs very rapidly because the iron reluctance cannot grow and so the air flux must grow hugely(meaning that the primary current rises rapidly until it melts or the fuse melts)
Q:Transformer Dvds for Christmas?
Transformers, Transformers: Revenge of The Fallen, and Transformers: Dark of the Moon(comes out September 30). Hope I helped.
Q:Transformer specifications trouble?
OK If you want to use a transformer, you need to step down from 120V to 60V this is a turns ratio of 2:1 the AC RMS voltage will be different than the rectified DC voltage you are getting mixed up with rms and peak voltages. the input is 120V rms. (RMS tells you the work the electricity can do) if you take 60V and full wave rectify it you get a double hump - the shape is different but the rms is the same. skillbank.co.uk/psu/trfrec.ht I dont know why you are worrying about the turns ratio if you already have a transformer? Alternatively: use two electromagnets in series, so the will run directly from the rectified 120V supply; OR just use a single diode to half-wave rectify the mains supply, which will give you an output of 120RMS / 2 60V RMS. The electromagnet will get hot and buzz a bit but will work fine. LG, have you tried to source 1 FARAD capacitors with a rating of 60V and ripple current of 30 AMPS? skillbank.co.uk/psu/ripple.ht
Q:Do transformers use electricity when the appliances aren't turned on?
Any transformer will use electricity when the device is not turned oncell phone chargers are the most common. A transformer or is just a coil of wire going from one prong to the other in that plug.
Q:Help with Physics Transformers?
Transformers can step up voltage, but in doing so, they step 'down' the current. Ideally, the voltage will rise by the same proportion as the current will fall. And since power is PVI, the power will remain unchanged. So the answer is that the power in the secondary should be the same as the power in the primary, which is 100W.
Q:buck-boost transformer question?
I already answered this. First, what is satisfactory performance? Is the 102 volts the lowest the voltage reaches? I asked you this last time, and I still don't see an answer. If 102 is the lowest, than adding 10 volts is all you need, as that gets you 112 volts, and any 120 volt appliance will operate fine at 110 volts. A 120 to 12 volt transformer is easy to find, and with 102 volts input you will get 10 volts output, and added to 102 that gives you 112 volts, plenty to operate the AC. Parts of this question read like a homework problem, but parts don't such as the undefined term satisfactory performance, so which is it?

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