360MVA/500kV three-phase self coupling OLTC interconnecting transformer power plant

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Place of Origin: HeBeiBrand Name:


Model Number:






Coil Structure:


Coil Number:

2 Winding

Capacity: Rated Voltage:


Connection Symbol:

YNd11 Dyn11 YNyn0d11


Cover type or Bell type


MR or ABB or SMS

Packaging & Delivery

Packaging Detail:Mainbody --naked Disassembled parts -- crate
Delivery Detail:3 months



1. CESI certificate
2. High short-circuit withstand
3. Low loss, PD and noise
4. CTQC certificate
5. No leakage




The application of the 360MVA/500kV three-phase self coupling OLTC interconnecting transformer power plant.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 360MVA/500kV three-phase self coupling OLTC interconnecting transformer power plant. 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 360MVA/500kV three-phase self coupling OLTC interconnecting transformer power plant, 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.


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Q:What is the meaning of the transformer without excitation?
General power transformers are equipped with tap-changer, can be carried out in a small range of voltage regulation to meet the grid voltage fluctuations, as far as possible to the transformer output side of the voltage stability. There are two ways: 1, on-load regulation: it can be in the transformer with load, automatic or manual tap position switch. Because the switch is completed in an instant, so it will not affect the normal operation, that is, once, the second side are not power failure can be carried out under the circumstances. 2, no excitation voltage regulator (sometimes mistakenly said no load voltage regulator): is to be in the primary side and the secondary side are power outages, put the isolation switch to open the case, to ensure that the transformer in the absence of electricity, adjust the tap position , The regulator. 3, in the past, it is possible from the English No Load (no load) or On Load (contained) translated over, said to be no load regulator. This is not accurate, it is easy to be misinterpreted as: the transformer can be in the absence of load (current) when the regulator, without the need to control whether the power side. This is very dangerous, no excitation voltage regulator, it is very accurate, to the transformer side, the secondary side are power, in the absence of any excitation circumstances, to operate. 4, therefore, our professionals must change No - Load to Off - Eirecuit - Tap - Changing.
Q:What is the normal color of the transformer oil?
these substances can make the oil color becomes darker. If the transformer oil color is dark, should pay attention to, can determine its dielectric loss factor, breakdown voltage, moisture, acid value and color indicators are in line with the new oil standards, conditional units can also determine its oxidation stability indicators Standards compliant
Q:Which movie do you think was movie of the summer? Transformers or Fantasic 4 (Rise of the siiver Surfer)?
transformers hands down. not just because it was a much better movie, but it also swept the box office. fantastic 4 just kind of disappeared after not so long.
Q:How many robots will be in the transformers movie?
Basically, transformers are robots AND vehicles. This is for the movie, in the comics, cartoon show, toy line, etc. there are more. Autobots (the good guys): Optimus Prime- The leader (Peterbilt truck) Bumblebee- Friendly soldier (Chevy Camero) Jazz- Small and fiesty soldier (Pontiac Solstice) Ironhide- Weathered soldier (GMC pickup) Ratchet- The medic (Hummer H2) Decepticons (the bad guys): Megatron- Leader (a jet) Starscream- Second in command (F-22 Raptor) Barricade- Soldier that disguises itself as a police car (Ford Mustang police car) Frenzy- Tiny robot soldier but fiesty (a cd player) Bonecrusher- Soldier who hates all but Megatron (Mine-protected vehicle) Blackout- Largest soldier (MH-53 Pave Low) Scorponok- Symbiotic relationship with Blackout (metallic scorpion) Brawl- Moody soldier (M1 Abrams) Hope this helps!
Q:National Standard for Transformer Life
Transformer life span, no national standard. Oil-immersed transformers Ye Hao, dry-type transformers Ye Hao, they all have their own load guide (a guiding technical standards). Above some theoretical calculations (you can look for a look). But the life of the transformer and many factors, it is impossible to Yigai, such as oil-immersed transformer has 6 degrees, that is, the transformer running temperature increased by 6 degrees, its life reduced by half. Every 6 degrees lower its life doubled, and so on.
Q:Physics? transformer help?
A Step up transformer is outdoors a skill station and will enhance the voltage for the skill lines so it may bypass swifter and better parts. A step down transformer is after the skill lines to shrink the voltage and making it secure for domicile use.
Q:Transformer confusion.?
You are confusing VA (power ratings) with transformer ratios 120/16 7.5 :1 3300/120 27.5 : 1 So connect 7Vrms to 16 input to give output 1 52.5V Now connect this 120 (52.5V) output to the 120V input of the 120/3300 transformer The output should be approx 52.5 x 27.5 1444 Volts Use the 16/120 to step up and then the 120/3300 to step up again Take the function generator voltage to its lowest and measure at all points now gradually increase the generator voltage measuring at all points until you get what you want If the voltages are not as you expect then the VA ratings may be a problem Remember to be extra careful with High Voltages
Q:Transformers Figures?
you need to look for the collectable series not toys find the G1 collection masterpiece series stay away from anything resembling the new animated series they suck rocks
Q:Terminator Salvation vs Transformers: Revenge of the Fallen?
Mari hasn't watched transformers XD My brother watched it for me so Mari could answer this question TS was awesome though don't judge me! So what Mari's a girl big deal anyway, boys can watch Sailor Moon but Mari can't watch Sci-Fi movies? Mari didn't like the part where JK beat T-800 T-800 RULES!!! LOL Yeah, Transformers didn't sound that great my bro gave it 7.5/10 but Mari will probably give it a 5/10 XD Yeah, Mari agrees with Star Trek XD So then it's TS if ST is out of the question PS WHEN THE HELL DID U START CALLING HAO-SAMA THAT?? XD Mari thought you hated him maybe Trunks-Kun is starting to see the light XD
Q:If the secondary coil contains more loops than the primary coil ( Ns Np) we have a sep-up transformer?
A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field through the secondary winding. This varying magnetic field induces a varying electromotive force (EMF) or voltage in the secondary winding. This effect is called mutual induction. If a load is connected to the secondary, an electric current will flow in the secondary winding and electrical energy will be transferred from the primary circuit through the transformer to the load. In an ideal transformer, the induced voltage in the secondary winding (Vs) is in proportion to the primary voltage (Vp), and is given by the ratio of the number of turns in the secondary (Ns) to the number of turns in the primary (Np) as follows:- Ns/Np Vs/Vp ---------------------(i) By appropriate selection of the ratio of turns, a transformer thus allows an alternating current (AC) voltage to be stepped up by making Ns greater than Np, or stepped down by making Ns less than Np.

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