40MVA/220KV startup/standby OLTC transformer

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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:		Coil Structure:	Toroidal
Coil Number:	3 Winding	Capacity:		Rated Voltage:	40MVA/220KV
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 40MVA/220KV startup/standby OLTC transformer, 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 200-490 tons, and due to the restricted transport conditions, the transportation becomes the critical issue for application of the 40MVA/220KV startup/standby OLTC transformer. 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 OLTC 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 OLTCTransformer’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 40MVA/220KV startup/standby OLTC 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.

Q:I have a 120v X 24v step down transformer that is capable of supplying 30 amperes. I need to convert the output to dc to supply a project I am working on. I have a bridge rectifier capable of handling 10 amps continuously, but nothing that could handle the 30 amp output. What would occur if I put the rectifier on the input side (with no filter capacitors) and fed the xfmr the DC voltage with 120hz ripple? I suspect the xfmr wont like the 120hz input and generate excessive heat. Anybody know for sure? The xfmr has a laminated iron core and copper windings.: The transformer will not work correctly with pulsating DC. It will overheat.

Q:Usually the life of the transformer is called 20 years, is there any GB requirements? If there is a specific in that standard inside. Thank you for your thanks: I can only give you in the transformer industry, we all agree that the argument: 1, before the transformer, the oil inside the transformer and air direct contact. As the transformer in the thermal expansion and contraction, the oil up and down fluctuations, we called the transformer in the breath, an increase of oil and air contact opportunities. The moisture enters the inside of the transformer. So that insulation is reduced. Under normal operation and maintenance, the transformer is guaranteed to have a life span of 20 years. 2, the current transformer, to take a fully sealed structure, oil pillow with sealed pocket, so that the transformer oil is not in direct contact with the air. Under normal operation and maintenance, the transformer life is 30 years

Q:I think it will. Michael Bay who doing the movie has a history of messing up classics. Godzilla is my prime example. So, what do you think? Transformers the movie: Good or Bad?: Yes, it will suck. As a scientists and former electrical engineer / super evil nerd, I'd have to say from the trailers this whole movie looks bad. I've been looking at the current graphics (i'm also into 3D design with BRL-CAD and Blender) and I would have to say the autobots and deceptacons were made all wrong. Also, something that has been bugging me about the trailers, is that too many humans are appearing in the film. The humans keep talking. They blab. The movie is called Transformers. It's about transformers. It's not like Terminator where the human race is greatly involved. No, in Transformers, a lot of the stuff revolved around Cybertron. A good amount of the time, humans talked little while the robots talked lots. I'd like to say I've watch a lot of Transformer's episodes through the time I've been alive. And as I looked at the trailers, I didn't really see any of the Transformers talk. I saw mostly people talking and yammering in awe and amazement at the fact that transformers are alive. Now, some people are saying the transformers are voiced by some people, and Optimus is going to be voiced by the a former voice person. However, I just don't think it's going to be as great as the cartoons one bit. I don't think the whole urban sprawl bit was a good design. I think the robots were made with too many shades of dark. I mean, look at megatron's design; it's all bad. Also, as I watched one of the actors on Jay Leno, I saw him talking about the movie. He only cited that Transformers is from the 80s. He didn't talk about Transformers in the 90s, 2000s, and other versions of the Transformers. In my opinion, nobody knew what they were doing when they were making this movie.

Q:I need to find out.I am a huge Transformers fan.: i've watched transformes. loved both the movies.

Q:A 630 kVA, 11kV/400V transformer. Rp, Xp, Rs, Xs, Rc, and Xm are given. How to find secondary and primary? Do I need to calculate the total impedance referred to the primary and secondary or can I calculate currents without it?: 630 Kva Transformer

Q:Transformer voltage range of 10.5 ± 2 * 2.5% kV and 10.5 ± 5% kV What is the difference: 10 kV supply voltage is generally 10 ~ 10.7 kV, a long time too high voltage will cause the transformer insulation overheating, shorten the service life. 10.5 ± 2 * 2.5% kV range is 10.25 ~ 10.75 kV, 10.5 ± 5% kV 10.5 ± 5% kV 10 ~ 11 kV, the general power supply voltage is also the highest in 10.7KV, if the end of the line, with the The transmission line will gradually decay, if the end of 10.7, then the export of the transformer I am afraid to smoke, so we generally master substation bus voltage in 10.4 ~ 10.6

Q:Transformer winding maximum temperature at?: National standard "dry-type transformers" GB6450-1986 on the dry-type transformer temperature limit to make the provisions. 1, the dry-type transformer coil, when the use of A-class insulation material, the ultimate operating temperature of 105 ℃, the maximum temperature rise should be less than 60 ℃; when the use of E-class insulation material, the limit operating temperature at 120 ℃ , The maximum temperature rise should be less than 75 ℃; when using B-class insulation material, the extreme working temperature at 130 ℃, the maximum temperature rise should be less than 80 ℃; when using F-class insulation material, the limit operating temperature at 155 ℃ , The maximum temperature rise should be less than 100 ℃; when the use of H-class insulation material, the limit operating temperature at 180 ℃, the maximum temperature rise should be less than 125 ℃; when using C-class insulation material, the extreme working temperature at 220 ℃ , The maximum temperature rise should be less than 150 ℃.

Q:This transformer outputs AC or DC: If you have 220V output voltage, then the peak voltage of the waveform is 220 * 1.414 = 311v, then your rectifier at least reverse voltage of not less than 400V, then the voltage is not more than 400V The Look at your transformer current, if the full load current is 7A, then your rectifier load capacity should not be less than 10A. So the main consideration is the rectifier voltage and current these two aspects.

Q:how the electronic transformer work?: For the best answers, search on this site

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