334MVA/500kV single-phase OLTC 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 334MVA/500kV single-phase OLTC auto-transformercan 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 the334MVA/500kV single-phase OLTC auto-transformer. In order to make the products applicable to any UHV substation in our country, the state grid of corporation of China set the "A study of easy-transport large capacity UHV 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 334MVA/500kV single-phase OLTC 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:Transformers Movie!?
There's quite a lot
Q:Question about transformers !!?
The is something wrong with your leakage reactances or the turn ratio, because N^2Lls/Llp. I'll neglect this issue. i) The total impedance of the transformer referred to the primary is Zt .03+j.1+(1.12+j6.)/16. ii) VloadVin*ZLoad/16/(Zt+ZLoad/16) ii) Same as above, except ZLoad now becomes the parallel combination of 200 and -j100.
Q:transformers 2?
No there is no trailer yet because there is no footage yet. The film is currently 'in production' and will hit cinemas next year. Look for a teaser soon enough.
Q:Transformers Tonight?
I would think there will be a fairly long line for it. So I would say maybe go like 45 minutes to even an hour early just to be on the safe side of things. Good luck and hope you enjoy the movie, I know I cannot wait to see it.
Q:How come Transformers has made more money than Star Trek, Wolverine, Terminator, etc movies that have been mad?
the guys go crazy for megan fox.
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?
Q:friedland d753 door bell transformer?
Years ago 25+ Friedland bell transformers had two glass fuses 0.5amp,these very small glass fuses protected the transformer windings.These could be the fuses they are referring to,the main supply,as you have pointed out is fed from your circuit board. Isolate that breaker and remove the cover on your transformer and have a look for your fuses,these glass fuses are about half an inch long.Hope you are successful.
27. (a) More than that of transformer B 28. (a) Pulsating magnetic flux 29. I do not think there is such a limitation on ONAN transformers. 30. (a) 100
Q:How to increase the transformer output current
If the transformer is not in the case of overload, then increase the load, multi-access electrical equipment, it increases the output current. Otherwise it is not safe. If you do not change the structure of the transformer, do not change its specified cooling method (such as air-cooled, water-cooled), does not change its specified ambient temperature, then its rated current can not be changed.
Q:Transformer turns around the number and how much V is calculated
2, seeking coil turns Primary coil n1 = 220 ╳ 9.8 = 2156 turns Secondary coil n2 = 8 ╳9.8 ╳ 1.0 = 82.32 desirable for 82 turns 1.05 in the calculation of the secondary coil turns is the pressure drop when a load is considered

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