240MVA/345kV three-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 240MVA/345kV three-phase OLTC auto-transformer can significantly improve the economy of the UHV substation, and matches well with the transmission capacity of UHV 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 the 240MVA/345kV three-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 UHV 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 UHV transformer 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 UHV Transformer’s right at the first time once again filled the gap in the field of UHV transformer research after Chinese transformer industry overcame the difficulty of integral transport of 240MVA/345kV 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 UHV Transformer products.


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Q:Transformers The Movie 1986 Or Michael Bays Transformers?
yes, it might be true but it depends
Q:Transformer Amplitude Modulation?
The collector of the output transistor or plate of the output vacuum tube in a high power AM transmitter has DC voltage and an audio signal applied to it. The audio signal causes the the transistor/ tube to create AM. The AM radio frequency is shunted off to a tank circuit and then coupled to the antenna. A transformer is used to couple the audio signal to the transistor's collector/ tube's plate. A high power audio signal is applied to the primary side of a transformer and the secondary of the transformer is connected in series to the DC power source to the output device. This creates a varying DC voltage to the output device which creates Amplitude Modulation.
Q:What is the meaning of the high voltage side and the low side of the transformer?
Under normal circumstances the role of the transformer is to high-voltage transmission (saving material to reduce the loss) over the power to reduce the voltage (there are boost in the power plant substation) to meet the conventional use of electrical equipment standards. Therefore, in the conventional step-down transformer input (also called once) is the high-pressure side, the output (also called the second) is the low side.
Q:Transformer - Powered by DC?
No. a transformer cannot be powered by AC.because due to the steady flow of current in dc,it will not create any disturbances in the secondary coil in transformer.
Q:Get more current from a 12kV transformer.?
A pad fixed transformer rated no longer below 250kVa is accessible for this installation. Require the flexibility organization to position in ability provide contained in the 33 Kv to 12 Kv edge. yet another transformer, 12KV/240-100 and twenty volts must be mandatory. An engineer or carry close electrician is mandatory right here.
Q:What is the temperature of the dry-type transformer?
It depends on the insulation of the transformer is how much. Generally the highest temperature has 105/120/130/155 degrees and so on. Normal use, more than 80 degrees on the need to use the cooling measures. Another dry-type transformers do not install the temperature sensor, then it is not alarm, only installed the temperature sensor will!
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:630kva dry-type transformer rated current is how much
If it is a 10kV transformer, Then the rated current = 630 / 10.5 / √3 = 34.64A, which refers to a current, phase current
Q:Transformer Coupled Amplifiers?!?
Transformer Coupled Amplifier
Q:How and why are transformers used on electric wires?
D size batteries are not strong enough. It would be so much easier to go buy a solar powered electric fence charger , it does'nt cost anything to run.

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