250MVA/242kV three phase combined shell type transformer for hydro 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:		Capacity:		Rated Voltage:	250MVA/242kV
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/242kV three phase combined shell type transformer for hydro power station.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 250MVA/242kV three phase combined shell type transformer for hydro power station. 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 250MVA/242kV three phase combined shell type transformer for hydro 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 OLTCconstruction application in our country, greatly improved the technical level and manufacturing ability of BTW in terms of OLTC Transformer products.

Q: I wanted to watch the transformers cartoons but because there is so many I don't know which to watch first, seconds etc.Can you please tell me in order which to watch?I'm watching Transformers Season 1 episode 1 atm.THANKS: Generation 1 (Japan/America) - Season 1 - Season 2 - The Movie - Season 3 Then it diverges at this point -American: Season 4 -Japanese: The Headmasters, Super God Masterforce, Victory, Zone. There's also Generation 2 but that is just selected G1 episodes that have CG transition frames added to them, so it's not worth watching. -------------------------------------- Beast Era -Beast Wars Season 1 (America) After Season 1 Japanese Beast Wars -Beast Wars II -Beast Wars Neo) Then it goes back to the American continuity -Season 3 -Season 4 -Beast Machines -------------------------------------- Japan Transformers RiD aka Car Robots in Japan -------------------------------------- Japan Transformers Unicron Trilogy -Transformers Armada (Micron Legend in Japan) -Transformers Energon (Superlinx in Japan) -Transformers Cybertron (Galaxy Force in Japan) Note: These are the titles of the American versions, the original Japanese version was not a Trilogy therefore Transformers Micron Legend and Superlinx are in continuity whereas Galaxy Force is a separate series unrelated to the continuity of the first two. -------------------------------------- America Then a new American-made series, the crappy TF: Animated -------------------------------------- Advice, Japanese Transformers never received good treatment in the US, they were always butchered, so it's best to watch the anime Transformers in Japanese.

Q: High school physics, according to the transformer U1 / U2 = N1 / N2 Can make a large voltage into a small voltage, but the small voltage can become a large voltage? Need no conditions? Can the transformer be used only for alternating current? I am now only high school physical level, answer not too esoteric or too professional! 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). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the purpose can be divided into: power transformers and special transformers (electric furnace change, rectifier, frequency test transformer, voltage regulator, mine transformer, audio transformers, IF transformers, high-frequency transformers, impact transformers, instrument transformers, electronic transformers , Reactors, transformers, etc.). Circuit symbols commonly used as the beginning of the number. Example: T01, T201 and so on.

Q: I haven't seen Dark of the Moon, but I recently got OBSESSED with Transformers. Please don't spoil anything, but I'm curious, how do they incorporate the new chick, Rosie, Huntington-Whitely, in the movie? Do they ever explain where Micheala went(Btw- I KNOW what happened to Megan in real life.that's not what im asking lol) So yeah, thanks!Bq: SAY OPTIMUS PRIME IF YOUR A GIRL TRANSFORMER FAN:)Bq: Do MOST girls like Transformers, or is it mostly guys who like it?: I think ir's mostly guys (partially because of Megan Fix and that other girl who replaced her). A lot of girls do like it though. I like the concept, it's pretty cool. However, I think they could have chosen a way better actor than Shia LeBoufe.

Q: i bought transformers a few months ago, and i finally watched it last night.my nephew watched it and i guess got something on the dvd.i was at the ending where they rolled bumblee in on the truck and the cube was destroyed and all that and optimus prime was saying they lost a great ----- i can't remember extactly what he said.anyway, right after that, the cd skipped and went do directly to the credits.what did i miss?: I am Optimus Prime, and I send this message to all autobots taking refuge among the stars. You are not alone.

Q: Why is the transformer ah?: Transformers are electrical components used to change the voltage. In the circuit, you can raise the voltage, you can also reduce the voltage to achieve the required voltage value. The voltage transformer is called a step-up transformer, on the contrary, called a step-down transformer. Of course, the transformer can only change the AC voltage (mains, etc.), can not change the DC voltage (battery, battery, etc.).

Q: Briefly explain how an alternating current transformer works and why they are so important to the world’s electrical power infrastructure.: Okay. You take a magnet and run it past a coil and you get electricity. You can also simply switch the direction of current (or pulse it) in order to create induction current in a coil. So. if you make a basic AC electromagnet with say. 100 loops of thick copper wiring, and put it next to another coil with say. 10,000 thinner wraps. The coil that gets the juice, will induce a current in the coil next to it. Conveniently, more wraps higher voltage lower amperage, and fewer wraps higher amperage lower voltage. So in the above scenario, under ideal circumstances, we would take a primary voltage off 100 volts 100 amps and turn it in to a stepped-up voltage of 10,000 volts at one amp. The reason this is important is that high voltage travels well over great distances. It is much easier to push the same juice much farther away from its source with very high VOLTAGE and low amps than it is to do it the other way. Amps cause heat, heat causes loss and damage to the carrier wire. Voltage just rides along on the surface of the wire with very little loss. So we step up for transport and back down for use when we are close enough to end-use that the losses are negligible.

Q: A transformer is used to step down form the New Zealand mains voltage of 230 V to 110 V for use with an electric razor from the USA. (a) If the razor draws a current of 0.15 A what current (at least) is drawn form the 230 V line? (b) What is the ratio of the loops in the primary and secondary coils of the transformer?Could you please include the equations you used, and your working.: Assuming 100% efficiency in the transformer: If the razor draws 0.15 amps at 110 volts, current on the 230-volt (primary) side of the transformer would be: 0.15(110/230) 0.072 amperes (72 milli-amperes).

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: 1.Why does transformer action can't take place in a dc circuit?2.on transformer coil what 5% tap means?: Transformer action is caused by the collapse in the primary field inducing a voltage in the secondary. A dc circuit will only generate a pulse when disconnecting it from the DC source.

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

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