250MVA/220kV standby transformer power station

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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:	Three	Coil Structure:	Toroidal
Coil Number:	3 Winding	Capacity:		Rated Voltage:	250MVA/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 250MVA/220kV standby transformer power station, 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 250MVA/220kV standby transformer power station. 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 250MVA/220kV standby transformer power station, 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 te

Core: The three-phase three-pillar structure inside and outside the box rolling. Center column for the multi-step cross section. After rolling core using vacuum annealing to remove stress, bending clamping groove. Pull screw to tension the body. Core surface brush special angle glue, to ensure core is not deformed and not rust.

Coil and the body: low-voltage coil made up of 1 to 6 wires together to four layers or double-cylinder type (500KVA and below), or spiral-type. High voltage coil axial direction Oil conduit and high-low voltage main oil gap are Stays curtain structure. Iron yoke insulation and trapezoid pads as one, so that the body uniform compression, body structure using the new safety board positioning, vertical and horizontal orientation, ensuring that is no displacement.

Tank: The ripple tank, sealed structure, no leakage, maintenance-free.

Our service

1. Before the order, you will be provided with our general product descriptions, a series of detailed account for commodity, instructions, quotation sheet and related qualification certificate to have a knowledge of our company and products.

2. After signing the technical agreement, the general assembly drawing, base drawing, drawing information and technical requirements will be offered. The technical requirements of agreement will be implemented strictly to provide new, advanced, mature and reliable products.

3. Guarantee all the process, components, accessories and test for products comply with the national standard or client-specified standard.

4. After products arriving, technicians will be sent to investigate on the site installation supervision, insure the perfect installation in the shortest possible time. During the debugging period, we also assist in the field test and debugging to make sure it running smoothly.

5. The technicians are responsible for the explaining of technical documents and drawing and answering and solving all problems about our products.

Q: Transformer voltage ratio and current ratio.: High voltage side voltage / low voltage = low voltage current / high side current = variable ratio

Q: We plant transformer plus a total of 16 million households, as a fixed asset depreciation, the financial should be a lot of years more reasonable, is the industrial enterprises, which knows the trouble to help me answer, thank you!: Transformer (Transformer) is the use of electromagnetic induction principle to change the AC voltage of the device, the main components are primary coil, secondary coil and core (core). In electrical equipment and wireless circuits, commonly used as lifting voltage, matching impedance, safety isolation and so on. The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the use can be divided into: distribution transformers, power transformers, sealed transformers, modular transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, electric transformers, rectifier transformers.

Q: How to make a current transformer more linear? Except change the core.Thank you!: Ideal linearity is reached when B and H are linear. Use air as medium. It may give less output but linearity will be perfect!

Q: I will be living in Germany for a while and I'm trying to plug my TV in, as well as one or two other things. The 1000 transformer I have works, but whenever I plug in the power strip to plug in more things than just the tv, it will automatically blow the power in the house and I have to go flip the switch again. Other Americans I know here in Germany do not have this same problem. I need help!: Only if the power strip is also rated at 3000 volts or higher. Otherwise, definitely not.

Q: If I have a step down transformer, the voltage in the second coil decreases. From conservation of energy (Power of firstpower of second coil) the powers are equal. But if PU*I and the voltage decreases, does the second coil have a higher current in order to maintain its power?: A transformer makes use of Faraday's law and the ferromagnetic properties of an iron core to efficiently raise or lower AC voltages. It of course cannot increase power so that if the voltage is raised, the current is proportionally lowered and vice versa. hyperphysics.phy-astr.gsu.edu/hba Goodbye

Q: I can't remember the funny scenes from any the Transformers movies, especially 1 and 2.It's driving me nuts.I saw the third one just last week so I remember a couple of funny scenes, but other than that, no luck.If you can, could you please include a link to a video clip of the scene?Thanks so much! (:: I'll give you scene by scene from each movie that I can recall. I apologize for the lack of videolinks but I'll describe them as best as I can. Transformers: Bobby Bolivia (Bernie Mac) talks about his mom. Oh l love that woman if I had a rock I'd crack you in the head, b***h. Sam gets arrested and interrogated by the cops when Bumblebee runs off to communicate with the rest of the Autobots. What's this new thing they're on? Mojo? Ratchet sniffs the air when introduced to Sam and Mikaela. The boy's phermone levels suggest he wants to mate with the female. Mikaela makes Simmons take off his clothes. He has a Sector Seven t-shirt on underneath. Sam, Mikaela, Maggie, and Glen are flying to Hoover Dam. Rachel: So what did they get you for? Sam: I bought a car, and it turned out to be a giant alien robot. Who knew? Revenge of the Fallen Sam's mom and dad fooling around before their trip in front of Sam. Dad, this is not a rap video. Leo doing his funny dance while Burning Down the House is playing. Anything involving the Twins and Wheelie. Sam's mom. Oh, professor, I'd do anything for an A after eating a hash brownie (LOL! Funniest part of the movie). Simmons strips off his pants and shows he's wearing a Sector Seven cup underneath. Lennox tricks Director Galloway into parachuting off the airplane.

Q: What are the transformer capacity?: The size of the transformer capacity, usually based on the required power supply unit to determine the size of the power supply, with the voltage level is different, the voltage level product capacity is not the same. Voltage levels from 10KV ~ 1000KV range. The conventional capacity starts at 10KVA, and as the voltage level increases, the capacity increases accordingly. For example: 10KVA / 10KV, 500 / 10,2000 / 35,31500 / 66,40000 / 110,100000 / 220,240000 / 330,400000 / 500 and so on (due to too many types, but also the unconventional capacity of the transformer so Can not be simple summary).

Q: I live at an apartment complex and I was just returning from work when the entire complex went completely dark. All 12 buildings went offline at the same time, along with the outside lights and the covered parking lights. Since each building has its own transformer, shouldn't they be independent of the others? Why did all 12 buildings and the outside lighting go out together? Are they all on one line or something?: Are they all on one line or something? Yes. All the transformers likely get power from the same seller. If the transformer are the leaves of a tree then a branch supporting all of them was cut or damaged.

Q: i study transformer and found calculation for pf for open/short circuit test. but the value is bit confusing.pf at open test: 0.182pf at short tets: 0.135what the value means??why we need that??: Power Factor is very important , u know (apparent power)^2(active power)^2+(reactive power)^2 and also Iactive powerIIapparent powerI*cos(phi) phi is the angle between the voltage and current in transformer , and power factor is cos(phi) active power can transfer through the transformer(and also can transfer to mechanical power and torque in motors) but the transformer get the reactive power and send it back to the input power line,reactive power get back to heat of wires and voltage drop in power lines. so we like that reactive power be minimum (reactive powerapparent power*sin(phi)) or pho----0 then the cos(phi)----1 most of motors have power factor about 0.8-0.95 that is very good the value pf0.182 means the angle between the voltage and current vector is acos(0.182)79.5 at open test u have a very bad transformer it just transfer %18.2 of the apparent power

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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