500MVA/765kV substation auto-transformer

Ref Price:

Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 pc

Supply Capability:: 1 pc/month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

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:	500MVA/765kV
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 500MVA/765kV substation auto-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 application of 500MVA/765kV substation auto-transformer. In order to make the products applicable to any substation in our country, the state grid of corporation of China set the "A study of easy-transport large capacity 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 500MVA/765kV substation auto-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 OLTC Transformer products.

Q: 50 What is the actual power of the transformer? Is 3 phase 50 or 3 together 50: Three-phase transformer marked the basic capacity of three-phase capacity, that is, the sum of three-phase winding capacity is 50KVA. The actual output capacity of the transformer, not only with the rated capacity of the transformer has a relationship with the nature of the load, and the power factor of the load, and the efficiency of the transformer has a relationship with the level of loss of the transformer. When the load balance, stability, pressure efficiency of 100%, the actual power can be achieved: P = Se × COSφ, visible higher power factor, the closer to 1, the transformer the actual power is higher, closer to the apparent power. In general, the 50KVA transformer, when the power factor of 0.85, the actual output power of about 42.5KW.

Q: About a month ago, i studied Ohm's law which said voltage is directly proportional to electric current. But today when i was studying about transformer, it said that if number of turns of the secondary coil is more than that of primary, then the induced voltage is higher than the primary voltage which was supplied and the current throught the secondary coil is less. How can this be? If voltage increases, current should also increase right? And what is the difference between emf and current?: Ohm's regulation, the place it applies, will consistently artwork. the significant factor is the place it applies. on your case, the present is decreased via a million/20 interior the secondary whilst in comparison with the present interior the regularly occurring. however the fee of the secondary present day might nicely be calculated via making use of ohms regulation in case you have a resistor load. case in point, in case you have a one hundred volts utilized to the regularly occurring, then the secondary is 2000 volts. in case you have a a million M? load, the secondary present day is 2000/1M 2 mA. meaning the regularly occurring present day is 20 x 2mA 4 hundred mA. in case you alter the burden to 100k?, then the secondary present day is 20 mA and the regularly occurring present day is 4 amps.

Q: I have a US Navy Plate and Filament Transformer Manufactured by Hudson American Corporation.This monster weighs 14.5lbs, and is in a sealed steel casing.There are 16 unlabeled terminals, and I'm working to identify those.It does however have the current and voltage labelings for the primary and secondaryPrimary : 110/115/120v AC (Since there are 16 taps, I'm guessing that these are separate primaries)Secondary 1:360-0-360 200MA DCSecondary 2: 6.6v 10A CTSecondary 3: 12.6V 3ASecondary 4: 5.25V 3AI'm set on using a solid state rectifier circuit so i don't need the 5.25V Line, or the 12.6V line.Could I somehow do something to get extra current on the B+ line (S1 windings) with these unused secondaries?I want 4x 6550/kt88, so the extra plate current would be great to have around.: Get get right of entry to to an impedence meter and degree what the transformer relatively is (impedience clever). you will discover small transformers with an identical turns ratio and not additionally be near to what you like. If there's a marking on the transformer , you're waiting to seem it up. the different element is that utilising tubes at very low voltages would positioned you into very non linear tiers of operation. the entire thought of utilising a triode or a tetrode amp is for a tube sound and to get low distortion or controled distortion. beginning at 5 to ten% distortion isn't great. i assume you're speaking approximately utilising something like a 3V4 or in all possibility between the tubes designed for listening to aids. Neither replace into designed for finished constancy. Microphonics are a controversy. there are a number of integrated amplifiers that are very low distortion and could no longer require an output transformer.

Q: I have a doorbell that quit working. I don't know how to tell if it is the bell or the transformer: Yes it could be a dangerous situation. A better arrangement would be to mount the transformer on the outside of the panel box through a knockout. Better yet, mount it on a separate octagon box on the wall near the panel. Most doorbell transformers have an option to mount through a knockout on a box so that the 110 volt wires are inside the box, which is then covered with a blank plate. The doorbell wires then connect to the transformer outside of the box so there is no danger of high voltage getting into the low voltage circuit.

Q: What is the reason why the dry transformer is loud: 500kva below the dry-type transformer noise 56 to 58 dB or so, 630kva above 62 to 65 dB or so! This is our factory data. The dry-type transformer sound is great. Big like cattle called the same, because the core is loose!

Q: Hi there, I live in the Dallas, Texas area and we recently had a lot of storms come through. During one of the storms I was looking out a window to my backyard when I heard some thunder and saw some lightning hit the transformer right outside my backyard, which sent sparks everywhere. The power went out, but came on about a minute later.Ever since then (it's been about 24 hours) all the lights in the house have been dimmering every few minutes, some lights dimmer when you turn on appliances and one outlet went out randomly.: When lightening strikes power lines or transformers it causes a power surge, without the proper precautions (surge arrestor) this can cause damage to electronics and other misc. electrical items including the transformer, the service, the meter, and the panel which cant be protected by a surge arrestor, First things first, you need to contact the power company and let them know that one of there transformers was hit by lightening, next you will need to know who else is powered by that transformer if any body else is. some places have a transformer on each home, depending on where you liveif somebody else shares the transformer follow the lines to there house and ask them if they have the same probIf so its the power company's problem and they will likely replace it. If its shared and the other person does not have the same problem or If you are on the only one on the transformer then you will need to hire an electrician to inspect for damage and repairs.

Q: 50kva transformer price: 1,50kva transformer prices vary according to model prices ranging from 6000-20000 yuan.

Q: Could someone please explain, in relatively simple words, how an electrical transformer works?: they change the voltage of electrical currents. transformers have 2 coils. they use electromagnetic induction to transfer the electrical energy from the primary coil to the secondary coil. transformers can only operate using ac currents. it is because the current needs to change direction to move the magnetic field of the coil, so that the secondary coil can produce its own electric current using the magnetic field from the primary coil coils can only induce currents when they are exposed to moving magnetic fields. ac currents produce moving fields along the wires. so they can transfer from the primary coil to the secondary coil but at a lower voltage because of the difference of the no. of turns of the coils. there are 2 types of transformers. step-up and step-down. step-up: more turns in the secondary than in the primary. step-down: more turns in the primary than in the secondary. transformers can also change the amount of current.

Q: Rated capacity of three-phase transformer S = √3 * U * I: S is the total capacity of the three phases, is the apparent power, the unit is KVA. The sum of the three phases is equal to the sum of the three single-phase capacities, ie S = 3UI where U is the phase voltage and I is the phase current. If the line voltage line current, then S = √3UI This is because when the winding is triangular connected, the line voltage is equal to the phase voltage, the phase current is equal to 1 / √3 times the line current, 3 / √3 = Similarly, when the star is connected, the phase current is equal to the line current, the phase voltage is equal to 1 / √3 times the line voltage, the same 3 / √3 =

Q: I really want the transformer but if i buy it i have to wait for shipping. But on the other hand if i buy either one i have to wait 2 weeks for the other.: Sure, transformers are cool, but eventually you will become bored with it. Killzone 2 offers endless fun and is almost future proof with it's fantastic graphics and innovative multiplayer system that seamlessly switches modes whilst you are playing.

Send your message to us

*Email

*TEL

*Quantity

*Unit