278MVA/500kV single-phase double winding OLTC converter 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:	one	Coil Structure:	Toroidal
Coil Number:	2 Winding	Capacity:		Rated Voltage:	278MVA/500kV
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 278MVA/500kV single-phase double winding OLTC converter transformer 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 278MVA/500kV single-phase double winding OLTC converter 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 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 278MVA/500kV single-phase double winding OLTC converter 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 OLTCconstruction application in our country, greatly improved the technical level and manufacturing ability of BTW in terms of OLTC Transformer products.

Q:A lot of people have been discussing the new transformers film transformers dark of the moon-but how does transformers dark of the moon compare to transformers the movie 1986?For those who have seen all three of michal bays transformers films- and Transformers the movie 1986-which do prefer the new transformers movies or transformers the movie 1986?and more Important why?: The 1986 version has better acting on the part of the voice actors, more caring tragedy, more likable Transformers, very atmospheric, and one of the most tragic death's in the history of robot-kind. The first Transformers movie was stupid but fun. The acting in it was okay, the story was incompetent in the fact that they did not explain as much as they could have, bitchy lead actors, and a pretty epic final battle scene. The second Transformers movie is god awful. It is racist, the story is copied from the first movie, the acting is horrid, the characters are bloated bitches that yell all the time, a horrid villain(s), an overactively preachy Optimus Prime, a horrid Optimus death by unknown Decepticon, Transformer balls, bad dirty jokes, Shi Labeouf in robot heaven, Shi Labeouf having a near seizure, Shi Labeouf's mom gets high, and one of the longest unneeded battle scenes in movie history. The third Transformers movie is a step above god awful, racist towards Asians, the story is copied from the first two, the acting is still horrid, Shi Labeouf is self obsessed, Shi Labeouf is mean (he kicked Bumblebee), the Decepticons are cooler but the Autobots are the same, Optimus is still overactively preachy, a blinking camera during the final fight, a horrid Megatron death, a decent twist with Sentinel Prime, bad dirty jokes, Bumblebee getting tickled, a better and prettier actress than Megan Fox, and one of the worst guest appearances in movie history (Leonard Nimoy). C Y I like the old one better. Which do you like better? Also the new Harry Potter has a 100% from all critics.

Q:I need this Radio Shack transformer to provide power to a HO scale model train board lighting system. This transformer will be connected to a brightness control system and then the brightness control system will be connected to building lights and street lights. I have been told this issue is a safety and Electrical Code concern?: Tying the neutral to ground gives the system a reference point. Your system will then be protected against earth faults which would allow circuit fuses to blow to protect each sub-circuit should an earth fault develop. Without the neutral earth connection an earth fault on a given sub circuit would not result in a fuse blowing / breaker tripping thereby potentially causing associated metalwork to reach dangerously high potential and possible danger of electric shock should a person happen to touch the live metalwork and live parts at the same time.

Q:I was wondering what year is transformer 2 cuz the first 1 was freakin awesome!!!!!!!!! and i wanted to see a second 1 but dont know which year and i heard there was going to be another one transformers 2.: Yes there is a sequel for Transformers coming out next year. Transformers : Revenge of The Fallen will be released June 26, 2009. Everyone from the original is coming back including director Michael Bay and star Shia LaBeouf. IMDB has this description of the plot: The battle for Earth has ended but the battle for the universe has just begun. After returning to Cybertron, Starscream assumes command of the Decepticons, and has decided to return to Earth with force. The Autobots believing that peace was possible finds out that Megatron's dead body has been stolen from the US Military by Skorpinox and revives him using his own spark. Now Megatron is back seeking revenge and with Starscream and more Decepticon reinforcements on the way, the Autobots with reinforcements of their own, may have more to deal with then meets the eye.

Q:Transformer how to do no load test: The test voltage of the no-load test is the rated voltage of the low-voltage side. The no-load test of the transformer mainly measures the no-load loss. No-load loss is mainly iron loss. The magnitude of the iron loss can be considered independent of the size of the load, ie the loss at no load is equal to the iron loss at the time of the load, but this is the case when the rated voltage is present. If the voltage deviates from the rated value, the no-load loss and no-load current will change abruptly because the magnetic induction in the transformer core is in the saturation section of the magnetization curve. Therefore, the no-load test should be carried out at rated voltage. Note: In the measurement of large transformer no-load or load loss, because the power factor is very low, can achieve cosφ less than and equal to 0.1. So it is necessary to use low power factor watt table.

Q:I have a packaged heat pump w/ Emergency Heat that is not working and does not come on at all. No lights or anything even when I switch it to emergency heat. Someone said that it could be my low voltage transformer. What is that and how do I check it?: You need to check the breaker fist and the disconnect on the unit. Then after verifying with a Volt meter that you have power. Your going to need to remove the panel on the unit. There should be a circuit board with a LED light blinking (this is assuming you have power), Count the number of flashes the look on the back of the panel or the installer manual. This will give you the fault code of what has failed. To test the low voltage transformer, again you need to verify that the unit has power. You will need to use a volt meter. The other possibility is you have a failed contactor or failed capacitor. To veriy your thermostat is working try turning on the blower (fan) to ON. If the fan comes on then you have power to the unit, and your low voltage transformer is working. Also, if your thermostat has batteries in it and if they are dead this will cause a no heat issue. Heat pumps are not easy to trouble shoot via the internet. I highly recommend you call a professional out to properly fix the unit. Remember IF you decided to go fishing and try and fix it, your dealing with HIGH voltage and sensitive electronics. So, poking around really is not a good idea.

Q:What is the transformer capacity ratio? Capacity than 100%.: The ratio of the maximum capacity to the minimum capacity. The ratio of capacity to 100% is the ratio of maximum capacity to minimum capacity of 1: 1.

Q:Transformer capacity unit KVA? Transformer capacity unit KVA is how is it? 10KVA transformer, the maximum number of KW can be connected to electrical appliances? Supplementary - 2006-07-27 10:00:32 30KVA transformer, the maximum number of KW can be connected to electrical appliances? We plan to rent a workshop, there are power 380V, transformer capacity 30KVA. I want to install an electric furnace 75KW, welding machine 53KW, there are other small power appliances. Transformer capacity enough? I am full of transformer on the layman, please explain in detail, do not rhetoric.: What is the difference between kv, kva and mva? The kilovolt ampere (kVA) is the power measurement standard that is 1 kilovolt ampere. KVA is equivalent to the current in a circuit generated by the voltage of that line, usually measured in the transformer, that is he is a current unit. And kilowatts refers to the power of an electrical, that is, the power of the unit. The rated capacity represents the guaranteed value of the transformer output power under rated operating conditions and is the apparent power of the transformer. That is, the maximum output power of the transformer capacity, the transformer can not be the actual output power and capacity to be confused. The units are voltammetry (VA), kVA, and MVA.

Q:Transformer secondary side is high pressure or primary side is high pressure: Transformer can be divided into two types of step-up transformer and step-down transformer, the primary side of the transformer is the voltage input, the secondary side is the output. Step-up transformer is the secondary side voltage greater than the primary side, step-down transformer is the secondary side voltage is less than the primary voltage.

Q:The difference between the reflection impedance of the ideal transformer and the hollow core transformer is different.: The reflection impedance of the hollow core transformer reflects the influence of the secondary circuit on the primary circuit through the mutual inductance. The reflection impedance is in series with the self-impedance of the primary circuit. The reflected impedance of the air-core transformer is opposite to the reactance characteristic of the secondary circuit impedance.

Q:I have a friend who lives in a place that she converted to a liveable space at a movie studio complex; however, the space is right above the transformer used by the studios for power. At night we can sometimes hear some buzzing sounds. How dangerous is this? We've heard things like it causes cancer in the long run, and that it is simply not safe. Does she have to worry about it? She's been there about two years.: Transformers can produce powerful electromagnetic fields, but there is no definitive answer on the safety of living next to transformers. Some people believe the electromagnetic fields cause health problems, and others do not. Bona fide research on health risks has produced sometimes contradictory results. One thing is for sure, high capacity transformers occasionally explode if they get overloaded, but these types of transformers are not allowed inside of buildings.

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