40MVA/20kV split auxiliary transformer for factory

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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/20kV
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/20kV split auxiliary transformer, 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 200-490 tons, and due to the restricted transport conditions, the transportation becomes the critical issue for application of the 40MVA/20kV split auxiliary 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 the 40MVA/20kV split auxiliary 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.

Q: SGB10 transformer and SC (B) 10 transformer What is the difference between the two series where the difference, specifically to the 10 type and where the hope that the knowledge of a detailed explanation Thank you: 1.SGB and SCB transformers are dry-type transformers, the former is non-encapsulated transformer, which is the package transformer, because the SGB is a non-encapsulated transformer, the coil is damaged, can be part of the maintenance; SCB is epoxy encapsulated transformer coil , If the coil burned only after the coil, not part of the maintenance 2. The former heat-resistant grade for the H-class, the latter for the F-class. 3. From the cost point of view, SGB10 than SCB10 expensive 4. From the service life, the basic almost.

Q: Which transformers belong to special transformers: These special-purpose transformers are known as special transformers. Because of the working conditions and load conditions of these transformers, they can not be calculated by the general transformer calculation method.

Q: The book said the main transformer power failure operation should first stop the load side after the power side, is to prevent the transformer in the case of multi-power reverse charging. What is the transformer anti-charging here? What's wrong?: You can explain the specific situation, your multi-power situation is what kind of situation, because we have not seen you refer to the "book"

Q: i have plenty of 3 phase 220 in my shop, but one of my machines requires 440 3 phase. i was going to use a 75 kva transformer with 440 primary 220 secondary in reverse to supply the machine. it is a 15 hp motor 40 amps. i figured my minimum kva requirment to be 37.5 but more cant hurt for the potential high cutting rates i may need to achieve. i simply wanted to buy the transformer, hook the 220 3 phase supply to the primary, and the output to my machine. I think this will provide me with 440 output. the motor plate says 7-1/2 hp/15- hp. 40/20 amps. Any help is welcome, i hate to buy the transformer and not have this unit work. i would change the motor wiring, but the diagram is gone, and the wires are not numbered, also i believe id have to change all the heaters, which are hard to come by, as well as various other parts in the panel. just seems the transformer is the easiest way to get this machine up and going in prouction.: The only real problem you have to worry about is the capacity of the primary winding to supply enough current for your needs without burning up. That information should be on the transformer. Otherwise, transformers work both ways!

Q: Three-phase three-winding transformer high-pressure medium-pressure low pressure is what it means: Hello! Transformer high voltage, medium pressure, low voltage, respectively, refers to the three groups of winding (rated) voltage level. For example: 220kV voltage level of the transformer: the 220kV high voltage side, 110kV pressure side, 10kV low voltage side of the three groups of voltage levels of the composition. Depending on the needs of the manufacturer, manufacturers may also be required to produce windings for other voltage classes. Such as: by the 220kV high voltage side, 35kV in the pressure side, 10kV low voltage side of the three groups of voltage levels of the composition. 500kV voltage level of the transformer: generally by the 500kV high voltage side, 220kV medium voltage side, 35kV low voltage side of the three groups of the composition of the voltage level winding.

Q: How to measure check the good transformer ?kindly if anyone might upload the video for me . in this regarddo we have to take it out of the board ? (isolate from other components) .what to check . what should be the values ?when checking , supply should keep on or not ?any website that explain these things and upload the videos in these kind of matters . I want to learn the repairing and maintenance of electronic electrical devices instruments of daily use ?thanksGOD BLESS YOU ALL: You should compare the readings and current drawn off load with a similar transformer that is known to be good, do this, Measure the off load current at the primary with the secondary terminals disconnected, all current drawn will be due to hysteresis loss and any shorted turns. Measure the output voltage off load. Do this with both the suspected and the identical 'known to be good' transformer and expect similar results. For a double wound isolating transformer, also check for electrical separation between primary and secondary windings. Should be in the order of megohms.

Q: I am in 10th grade now, taking the IB next year, and I would like to know if a Transformer is good for things like taking notes in class, and working on projects that we might be allowed to work on in class. I would still have a full computer at home for more serious editing, but I would just like to know if the Transformer TF300 will be good enough for school. Also, I am not only talking about this year, but also the IB, which - if you know it, and I hope you do - will be more work and I would like to know, again, if the Transformer is up to that task.: (warning : poor English) Yes, Transformer Pad TF300 good for school. 1. It have a keyboard (optional), you can take notes faster. 2. Likes all others (pads), there have camera, you can take a photo of the board (if teacher allowed). 3. TF300 battery life quit good, with the keyboard even better. 4. We will work in cloud computing in the near future (or now) mostly. Google drive meet your needs for word processing, drawing, creating simple spreadsheet. you can share your works, or finish your project collaboratively with your group members via internet. 5. the chips: Tegra 3 is responsive, the screen: 10 (1280x800) is comfortable, the OS: Android 4.0 is more suited for tablets and it's a better os overall, the brand: ASUS, manufacture the best Android tablet (imo).

Q: Transformer Wiring and Principle: In the three-phase transformer, each core is wound around the original winding and the secondary winding, the equivalent of a single-phase transformer. Three-phase transformer high-voltage winding commonly used A, B, C, the end with X, Y, Z to represent . The low-voltage windings are represented by a, b, c and x, y, z. The high and low voltage windings can be connected in star or triangular lines, respectively. In low-voltage winding output for low voltage, high current three-phase transformer (such as plating Transformers), in order to reduce the low-voltage winding wire area, low-voltage winding also has six-phase star or six-star star connection. China's production of power distribution transformers are used Y / Y0-12 or Y / triangle -11 two standard wiring method. The number of 12 and 11, said the original winding and secondary winding line voltage difference, that is, the so-called transformer wiring group do not.

Q: And what are the prospects for Transformers 3? I mean, should i just skip it?I forced myself to watch Transformers Twice. Didnt care for it much, either time. Barely, BARELY passable.: I agree! I loved the first Transformers. But the second oneugh! The only thing I liked in that movie were the amazing special effects on the robots. Anyway, here are the reasons, it sucked: 1) Michael Bay did not follow the original script/story that screenwriters Orci and Kurtzman laid out. Here's what they said in an interview: We were very surprised when we saw it, too, and it’s a choice that was made. If anything, it just shows you that we don’t control every aspect of the movie. 2) Production was rushed to meet the premiere deadline. 3) Autobots got shoved to the side for more extended human drama military action. 4) Too much attention spent on CGI at the cost of crafting a good story or character development. 5) I really think Steven Spielberg (exec producer) had a hand creatively in Transformers 1. I guess he was really distracted by other things during the making of the sequel. Shia Labeouf sums it up perfect: We got lost. We tried to get bigger. It's what happens to sequels. It's like, how do you top the first one? You've got to go bigger. Michael Bay went so big that it became too big, and I think you lost the anchor of the movie. I suggest viewing Transformers 3 with very low expectations.

Q: I need a transformer that can produce 10 volts from a 1/2 volt change in the primary winding, but don't know how they are classified. The transformers I've seen on the internet give no clue of the winding ratio, just a serial number. Thanks.: I have never ordered a replacement transformer but you are looking to step the primary up 20 times and that is doable. I built a 1 Kilowatt amplifier for my ham radio station and my transformer steps the line voltage (either 120 or 240 volts) up to 3400 volts @ 500 mills. I also have a separate winding which steps the voltage down to about 9.6 volts for the tube filament. Aside from finding the correct step up ratio you also need to make sure the transformer can handle the power you will be dissipating. My transformer weighs about 25 pounds to allow the amp to put out about 1 KW. Wish I could've helped u more but I built the thing 15 years ago and have not fired up the amp in about 5 years.

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