The Ultimate Guide to 2500KVA Transformer
There are many kinds of 2500 KVA transformer in the market, has different looking for different applications.
Generally speaking, all of the 2500 KVA transformers are distribution transformers.
According to the classification of cooling medium, 2500kva transformers can be divided into dry type transformers and oil-immersed transformers.
Due to the different conductive materials, the 2500kva transformers are also divided into copper winding transformers and aluminum winding transformers.
Except for the above classifications, according to the different core forms, 2500 kVA transformers can also be divided into core type or shell type, Daelim Transformer always manufactures core type transformers.
Based on the application, Daelim Transformer's 2500 kVA transformers include pad mounted transformers, mini substation transformers, common pole three-phase distribution transformers...etc. But there are so many choices that can be chosen, how to choose the 2500 kVA transformer for your project?
Daelim has over 16 years of export experience for transformers, choose Daelim Team means choosing the professional.
Why 2500 kVA pad mounted transformers are widely used?
The 2500kva pad mounted transformer has small in size, takes up small space, is easy to install, and is easy to coordinate with the community environment.
2500 kVA pad-mounted transformer can shorten the length of low-voltage cables, reduce line losses, and reduce power costs.
Compared with the traditional European-style box transformer of the same capacity, its structure is more reasonable, and its low-voltage room, transformer room, and high-voltage room are not arranged in a mesh.
Learn more about Pad Mounted Transformer
The 2500kva pad-mounted transformer is the front and rear structure: the front is the operating room for high and low voltage.
The operation interval includes high and low-voltage terminal blocks, load switch operating handle, no-load voltage adjustment part switch, plug-in fuse, oil level gauge, etc.
At the rear is a fuel injection tank and a radiator, the 2500kva pad mounted transformer windings, iron core, and high voltage load switch fuses are placed in the transformer.
The arrester also uses oil-immersed metal oxide arresters.
The pad-mounted transformer eliminates the oil pillow and employs a sealed oil tank with a constant volume of oil and air gap.
The fuel tank and radiator are exposed to the air, so the 2500 kVA pad mounted transformer has no difficulty in dissipating heat.
Read more: How to choose pad-mounted transformer for your project?
2500 kVA pad mounted transformers are widely used for Bitcoin Mining
2500 kVA Pad Mounted Transformer Are Widely Used For Bitcoin Mining
Get it now: How to choose pad mounted transformer for Crypto Mining Projects?
Daelim Transformer's Pad-Mounted Transformers are mainly used in America Market and Canadian markets.
Bitcoin Mining is hot and will keep hot in North America in 2022, Daelim Transformer has exported thousands of 2500kva pad mounted transformers for crypto mining use.
Look what our Crypto Mining customer says about our 2500 kVA pad-mounted transformer:
“My bitcoin mines in China were banned, I had to move them to the USA at that moment since I know nothing about local standards and requirements, I was worried.
Fortunately, I met Daelim, a professional team, they solved all the technical problems I was concerned about, and now my mining machine works very well in the United States!
Transformer manufacture
Daelim Transformer Factory boasts advanced production equipment, skilled workers, and professional technical and marketing teams. We are committed to designing, manufacturing, and exporting high-quality and competitive transformers. By focusing solely on this goal, we ensure excellence in every aspect. We provide global customers with multiple standards, fast delivery times, and professional services.
Learn more: 10.5MVA-13.8/2.4kV Substation Transformer
2500 kVA Pad-Mounted transformer specifications
Pad-mounted transformer with the capacity of 2500kva is popular in the North American market, here I share the specifications for reference:
2500kVA, Vegetable Oil-filled, 3 Phase 60Hz, KNAN, Live Front, Radial Feed Transformer, Copper winding
Primary : 12.47kV, 13.8KV, 24.94KV, 34.5KV
Secondary: 480/277V or 415/240V
Connection: Dyn1 or YNyn0
Built To: ANSI/IEEE C57.12.34, CSA C27
Efficiency Meets With DOE-2016
Accessories:
1 x Oil Level Gauge
1 x Pressure Relief Valve
1 x Oil Temperature Indicator
1 x Pressure/Vacuum Gauge
1 x Nameplate – Inside
Read more : 3 Phase Pad Mounted Transformer
How long is the service life of a 2500kva transformer?
The life service of the 2500 kVA transformer is 20 years.
The national standard stipulates that pad mounted transformers are designed for 20-year service life.
In fact, most of Daelim's 2500 kVA transformers in operation often exceed this service life.
The role of 2500 kVA transformer core
What is the iron core used for?
The iron core lays the foundation for the mechanical skeleton of the entire transformer. Another more important role of the iron core is to provide a magnetic circuit.
Try for free: Why Substation Transformers Are So Important In Power System?
The function of the magnetic circuit in the transformer is only realized by the iron core. After the winding is energized, a magnetic field is generated, and the magnetic field lines pass through the iron core to form a magnetic circuit, which enhances and guides the magnetic flux, maximizes the magnetic field strength of the entire magnetic circuit, and avoids leakage loss.
The iron core is usually made by stacking hot-rolled or cold-rolled silicon steel sheets with high The iron core is usually made of stacked silicon steel sheets and coated with insulating varnish.
The inner iron core and coil form a complete electromagnetic induction system.
Transformer core grounding points
(1) A separate ground lead wire for the iron yoke clip is provided.
(2) The iron core grounding plate is placed in the middle of the cross-section of the iron yoke.
(3) If it is indeed necessary to place the iron core grounding sheet in other positions due to inconvenient on-site installation, the insulating bolts of the iron yoke pull strap and the grounding sheet should also be placed diagonally, which can prevent the generation of large current.
2500 kVA transformer price
The main factors affecting the price of 2500kva transformers are raw materials. The three main materials of transformers are iron core, windings, and accessories.
Transformer iron core
The two types of iron cores commonly used in transformers are amorphous alloy and silicon steel. The iron cores of these two materials have their own advantages and disadvantages.
The core loss of amorphous alloy is smaller, so the price is higher, and the disadvantage is that it is noisy. The loss of silicon steel sheet is relatively high, but the price is cheap, so many people choose.
Therefore, the price of an amorphous alloy 2500kva transformer is higher than that of an ordinary silicon steel sheet iron core transformer.
Transformer windings
Transformer winding materials include copper windings and aluminum windings. The price of copper is higher than that of aluminum, so the price of 2500kva copper winding transformers is higher than that of aluminum winding transformers, at least 15% higher.
Transformer accessories
Transformer accessories also greatly affect the price of the transformer. The price of accessories of internationally famous brands is many times higher than that of domestic transformer accessories. Therefore, if the 2500kVA transformer is selected from ABB, Schneider, Qualitrol, and other well-known brands, the price of the 2500kva transformer may be more than 50% higher.
It is worth saying, for the IEEE standard transformer with a capacity of 2500kva and below, the efficiency needs to base on DOE 2016, which is the mandatory requirement. In this way, the losses will be smaller, but the price will add at least 30%.
Keep on reading: What influence a high voltage transformer price？
How much oil is in a 2500 kVA transformer?
The transformer oil of a 2500 kVA, 13.8kv pad-mounted transformer is 383 Gal. 2500 kva transformer weight is about 13889lbs.
Normally 1 x 40 HQ can load 4 units 2500kva, 13.8 kV pad-mounted transformer to North America.
How much kVA does Bitcoin Mining use?
When you are buying a transformer for a bitcoin mine, first of all, you need to know what the total power consumption of all the miners is. For example, if the rated power of each Antminer S19 Pro 110T is 3250W, then the total power of 1300 set mining machines is 3250*1300=4225kw.
Then you need a conversion formula for KW and kVA:
4225KW/0.85=4970.58kVA
From this, we know that your bitcoin mine needs 2 sets of 2500kVA pad-mounted transformers.
Maybe you are interested in： What is the difference between mineral oil and vegetable oil？
What happens if the 2500 kVA transformer is overloaded?
The reasons for the overload operation of 2500 kVA transformers are:
First, with the improvement of people's lives, electricity consumption generally increases rapidly. The original 2500 KVA distribution transformers have small capacity and small horse-drawn carts, which cannot meet the needs of users.
Second, due to seasonality and special weather, etc. The reason causes the peak power consumption, which makes the 2500 kva distribution transformer overload.
Due to the long-term overload operation of the 2500 kva transformer, the internal components, coils, and insulating oil of the 2500 kva transformer are aged and the load of the the 2500kva transformer is changed.
It is the lack of oil inside the 2500 kva transformer that reduces the oil level and causes the contact surface between the insulating oil and the air to increase, which accelerates the entry of moisture in the air into the soil surface and reduces the internal insulation strength of the transformer.
When the insulation is reduced to a certain value, a breakdown short circuit occurs inside the 2500 KVA transformer Fault.
Read on: 10kv Transformer and Line Fault Finding Quickly
What are the lightning protection measures for 2500 kVA transformers?
Install ordinary valve arresters or metal oxide arresters on the low-voltage side of 2500kva distribution transformers.
The wiring of this protection method is as follows: the grounding wire of the high and low arresters of the transformer, the neutral point of the low-voltage side and the metal casing of the transformer are connected to the ground at four points (or three points in one).
However, operating experience and experimental studies have shown that, for distribution transformers with good insulation, lightning accidents still occur due to overvoltage of forward and reverse transformations when only lightning arresters are installed on the high-voltage side. In this case, a surge arrester can be installed on the low-voltage side to limit the forward and reverse overvoltages within a certain range.
Another way to adapt high and low-voltage sides are grounded separately.
The wiring of this protection method is that the high-voltage side arrester is separately grounded, the low-voltage side is not equipped with an arrester, and the low-voltage side neutral point and the transformer metal shell are connected together, and are grounded separately from the high-voltage side grounding.
This protection method can basically eliminate the overvoltage of the inverse transformation by using the attenuation effect of the earth on the lightning wave, which is worth popularizing.
Get it now: Electrical Transformer Protection Knowledge Guide
Daelim's professional technical team and marketing team will provide you with efficient and professional transformer solutions. If you have technical problems that are difficult to solve, please feel free to contact Daelim.
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