360MVA/500kV three-phase self coupling OLTC interconnecting transformer power plant

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Place of Origin: HeBeiBrand Name:


Model Number:






Coil Structure:


Coil Number:

2 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 the 360MVA/500kV three-phase self coupling OLTC interconnecting transformer power plant.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 360MVA/500kV three-phase self coupling OLTC interconnecting transformer power plant. 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 360MVA/500kV three-phase self coupling OLTC interconnecting transformer power plant, 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.


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Q:how many primes are there in transformers all together?
4 ithink
Q:why transformer draws lagging current in summers?
The transformer itself is inductive, as others have said, so it will always appear as a lagging load. Now, in the summer, most people are using their air conditioning systems, which are quite inductive because they're essentially just motors. So, the load attached to the transformer could be a good bit more inductive than in other seasons.
Q:Transformer tap adjustment there are several ways? What are the advantages and disadvantages?
There are two ways to adjust the tap in the transformer. 1, no excitation adjustment or no taps. 2, with taps. Their advantages and disadvantages are as follows: 1, no taps: taps when the transformer must be shut down after the power, the advantages of safe and reliable, but the disadvantage is to adjust inconvenient, and often because the tap position can not meet the needs of less. 2, with taps Advantages: easy to adjust, do not have to turn off the transformer power can be adjusted, and the general tap position more easily meet the requirements. Disadvantages: due to load adjustment prone to problems, high cost, compared with the same capacity transformer volume, taps device maintenance needs a long time to blackout.
Q:Transformer oil filter method
Transformers in the run after a period of time, if due to short circuit and other causes of transformer oil quality electrical test failed to test the need for oil treatment, improve its purity. The main reason for failure is excessive water content, including other impurities. Transformers because it has been oiled and can not be all out of all the oil out of the filter processing.
Q:Does a transformer burn and blast with overloading?
A transformer is just like any other circuit. The only difference is the primary of the transformer induces a current and voltage in the secondary without a direct electrical connection. But the induction comes from the collapse of the magnetic field in the primary which induces a current in the secondary. That current generated in the secondary follows the same laws as any other circuit. If you overload those terminal wires or short circuit it it will overheat and melt the wires possibly if you don't have it fused protected. In fact they make induction furnaces which are just transformers with the secondary that forms a short circuit in the coil. The temperature gets hot enough to melt iron and non-ferrous metals just from the heat of the short circuited (overloaded) secondary coil. Transformers are the same as any solenoid or electromagnet with AC electricity. So if you can't find info directly on transformers, then just use coil formulas for AC circuits
Q:what is the work of a transformer?
A okorder
Q:Movies: Transformers or Indiana Jones?
I would say Transformers, only because of the modernity to it and special effects. Indy's good, but it's getting old and it hasn't really got the thrill and emotion of Transformers. Spielberg has done some good films though, Jaws, Close Encounters, War of The Worlds, E.T to name but a few, unfortunately, Indy isn't one of his better movies. As, he produced Transformers and Bay is a great director (you can actually believe that LaBeouf is Sam Whitwicky and that, it could possibly happen the way Bay directs it, plus he gets the emotion and anger.), I would have to say Transformers, though Spielberg is, still, my favourite director. I can't wait for Dark Of The Moon though, it looks to be good, though it will be hard to beat the second film in my opinion.
Q:transformer buzzing hum?
A transformer creates a magnetic field that varies at the rate of the line voltage (60 or 50 cycles per second). If there is something in that field that is magnetic, it will be pushed back and forth at that rate, and if it can move, it will create a buzzing sound. Almost all transformers produce a little bit of sound, because the core is made up of layers of magnetic material that are glued together. It's not anything to worry about, just a nuisance.
Q:Transformers 3 discussion (SPOILERS)?
It was one of teh worst movies I have ever seen in my life. When are we going to grow the f*ck up and realize that this utter sh*te is not entertainment?
Q:National Standard for Transformer Life
Transformer life span, no national standard. Oil-immersed transformers Ye Hao, dry-type transformers Ye Hao, they all have their own load guide (a guiding technical standards). Above some theoretical calculations (you can look for a look). But the life of the transformer and many factors, it is impossible to Yigai, such as oil-immersed transformer has 6 degrees, that is, the transformer running temperature increased by 6 degrees, its life reduced by half. Every 6 degrees lower its life doubled, and so on.

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