How To Purchase 3000kVA Transformer In USA & Canada
3000kVA Transformer is a very common rated capacity in the power distribution system, especially in the North American market. 3000kVA Transformer. And they are usually used in Data Centers, Crypto Mining farms, renewable energy projects, public utilities, etc...
Daelim can design, produce, test, and ship 3000kVA transformers for the North American market based on CSA, ANSI/IEEE standards. At Daelim Belefic, you will have 3 different choices for 3000kVA transformers: Pad mounted transformer, substation transformer, and dry type transformer. Let’s take a detailed look at these 3000kVA transformer types.
How Do I Choose A Transformer Size?
When we need to purchase a power transformer, it is not as easy as buying a car or cell phone. Power transformers have many technical details that need to be confirmed before making the order, the basic technical information that you need to know first is the high voltage (input voltage), low voltage (output voltage), and rated capacity (kVA).
The easiest way to make sure all the technical details are correct is to hire a professional electrical engineer, but if you are planning your own project like a BTC mining farm, you might have to make the preliminary selection first. In this case, you need to calculate the rated capacity by yourself first.
First, you must know the electric power (KW / MW) of your electrical equipment. The rated capacity of the power transformer is kVA / MVA. KW is on the same level as kVA, and MW is on the same level as MVA. We should know that 1000kW is 1MW, and 1000kVA is 1MW.
Learn more: How to choose the best distribution transformer?
Now we can move on to the calculation part. The formula is MW÷0.8=MVA, KW÷0.8=kVA.
For example, now you have a bitcoin mining farm that needs 10MW of electric power, 10MW=10,000kVA. 10,000kVA÷0.8=12,500kVA. This means the bitcoin mining farm needs power transformers that can handle 12,500kVA electric power.
In this case, since it’s a bitcoin mining farm, you can choose 5 units of 2500kVA Pad-mounted Transformer to handle this 10MW electric power. For the Data Center projects, you can also use Pad-mounted Transformers. Substation-type transformer solution is also workable, but pad mounted transformer solution is easier to install & repair.
3000kVA Transformer Types
If you need 3000kVA power transformers, Daelim can design different types based on your actual project needs.
Pad mounted transformer
Pad mounted transformer is a commonly used design for 3000kVA power distribution transformers, pad mounted transformer has advantages such as easy installation and repair. In the Canadian market, Pad mounted Transformer should be designed based on CSA C227.4 standard; for the US market and other American countries, Pad mounted Transformer must follow ANSI/IEEE C57.12.34 standard.
Daelim can design 3000kVA Pad mounted Transformer with 2 different designs: Loop feed or Radial feed; Dead front or Live front. Also, the accessories can be customized, such as the transformer oil, usually, we use mineral oil as the transformer oil, and the cooling system with mineral oil is called “ONAN”; but if you need, we can also use vegetable oil as transformer oil, and the cooling system with vegetable oil is called “KNAN”. If you’d like to know more about Daelim Pad mounted Transformer, welcome to click here to learn more details.
Learn more : 3 Phase Pad Mounted Transformer-Daelim Belefic
Substation transformer
For substation transformer, 3000kVA is also a common rated capacity. Customer can share their required design with our engineer teams, such as the bushing design, top-mounted bushings or sidewall bushings can be designed with no problem. A cable box on the high voltage & low voltage side is available. Same as pad mounted transformer, transformer oil can be chosen between mineral oil & vegetable oil. Also if you want a bigger capacity, can use the “ONAF” cooling system, to add cooling fans to the radiator, and upgrade the electricity used.
Read more about substation transformer: Substation Transformer Ultimate Guide, You Need To Know
Cast resin dry type transformer
For a cast resin dry type transformer of 3000kva, the voltage of such a large capacity is usually 35kV. This type of transformer is usually used indoors, such as in shopping malls, basements, studies, etc. The biggest difference between pad mounted transformer and substation transformer is cast resin transformer without oil, good fireproof and explosion-proof performance. If you must use the dry changer outdoors, it must be equipped with a high-level protective shell.
Get it now: Ultimate guide 0f cast resin dry-type transformer
How much does a 3000 kVA transformer cost?
Above we have introduced three types of 3000kva transformers. Different types of transformers have different costs. Pad mounted transformers and substation transformers are oil-filled transformers, and their prices are cheaper than dry transformers.
The main cost factors are:
Transformer coil material
Transformer coils are usually made of copper wire and aluminum wire. The price of copper wire is higher than that of aluminum wire, so the price of copper transformer is about 30% higher than that of the aluminum transformer.
Silicon steel sheet
Silicon steel sheet is the main material that composes the transformer core, and its performance and quality affect the performance of the transformer. For the silicon steel sheet in the Chinese market, the smaller the grade, the higher the price, the smaller the turbine loss, and the lower the iron loss, which makes the transformer's no-load loss reduction performance better.
It must be reminded here that some transformer manufacturers will use old silicon steel sheets, re-cut them, and use them on new transformers. It will not be seen in a short period of time, and the noise will gradually become louder. Therefore, the quoted price is very low. When buying a transformer, you must pay attention not to buy this kind of old silicon steel sheet transformer, because the performance and life of this kind of transformer will be greatly reduced. Don't lose the big because of the small.
Accessories
Insulating oil and sudden pressure relay have a greater impact on the price of substation transformers and pad-mounted transformers. In particular, there are many optional accessories for pad-mounted transformers, such as a sudden pressure relay, fuse, load switch, etc. The number of accessories and brand requirements will have a relatively large impact on the price of a 3000kva pad-mounted transformer.
Transformer oil we introduced in detail before, there are mineral oil, vegetable oil, etc. The price of vegetable oil from international famous brands will be three times or higher than the price of ordinary mineral oil. We know that the transformer oil accounts for nearly 20% of the total weight of the transformer, so the transformer oil has a greater impact on the cost of the transformer.
Learn more about transformer oil: What is the difference between mineral oil and vegetable oil？
Cast resin dry type transformer production requires higher technical and process requirements, the production environment is harsh, the epoxy resin cast for insulation is more expensive than the insulating oil for an oil transformer, and the dry transformer needs to be equipped with an automatic temperature control system, shell, and other auxiliary equipment. Therefore, the cost and price will be much higher than that of the oil transformer.
Read more: How Do I Choose A 1500kva Transformer In 2022?
How much does a 3000 kVA transformer weight?
The weight of different types of transformers for 3000kva is also different.
3000kva pad mounted transformer oil capacity about 586 gals, total transformer weight about 7600kg.
3000kva substation transformer oil capacity about 396 gals, total transformer weight is about 6500kg
The total weight of 3000kva cast resin dry type transformer is about 8600kg.
3000 kVA transformer dimensions
Pad-mounted transformer dimension
| Date | Offered | Unit |
| Height | 1900 | mm |
| Depth | 2080 | mm |
| Width | 2100 | mm |
Substation transformer dimension
| Date | Offered | Unit |
| Height | 2150 | mm |
| Depth | 1900 | mm |
| Width | 2600 | mm |
Cast resin dry type transformer dimension
| Date | Offered | Unit |
| Height | 2080 | mm |
| Depth | 2280 | mm |
| Width | 1260 | mm |
Read my article on 5+FAQ About 15kV Transformer
3000 kVA transformer specification
Pad-mounted transformer specification
| Rated Capacity | 3000 | Product Type | ZGS-Z-3000/12.47 | 60HZ | |
| 3Voltage Combination | HV(V) | 12470Y/7200 | BIL | HV(kV) | 95 |
| LV(V) | 2400 DELTA | LV(kV) | 60 | ||
Substation transformer specification
| Rated Capacity | 3000 | Product Type | SL-3000/4.16 | 60HZ | |
| 3Voltage Combination | HV(kV) | 4.16 | Current | HV(A) | 416.4 |
| LV(kV) | 0.4 | LV(A) | 4330.1 | ||
Cast resin dry type transformer specification
| Rated Capacity | 3000 | Product Type | SCB-3000/35 | 60HZ | |
| 3Voltage Combination | HV(kV) | 35 | Loss | No-load loss | 5800W |
| LV(kV) | 6 | On-load loss | 24000W | ||
3000 kVA transformer impedance
Impedance is an important parameter of the transformer, which is related to many factors such as capacity, copper loss, iron loss, coil material, structure, and so on. Generally speaking, the higher the voltage level, the larger the impedance value. Usually 6-10kV power transformer impedance is 4-5.5%, 35kV power transformer impedance is 6.5-8%; 110kV power transformer impedance is 8-9%; 220kV transformer impedance is 12-14%. Therefore, the impedance of different types of transformers of 3000kva is also different.
Pad-mounted transformer's impedance is about 6%
The substation transformer's impedance is about 5.32%
Cast resin dry type transformer's impedance is about 7.6%
Tyr for free: How much do you know about oil-immersed distribution transformers?
3000kVA Transformer Standards
For a 3000kVA power transformer, Daelim can design and produce different types, and models based on different international standards:
For the Canadian market, the Daelim engineer team will design the 3000kVA transformer based on the CSA standard; ANSI/IEEE standard for the American market, also including South America & Latin American countries (such as Mexico, Panama, Honduras, Chile, etc...) and the Philippines; AS/NZS standards are for the Australian & New Zealand market. IEC standard (International Electrotechnical Commission) is the international standard of all electrical, electronic, and related technologies, IEC 60076 is the standard of power transformers, Power Transformers in Asia, and Africa usually use IEC 60076 standard.
Based on these international standards, through over 16 years of experience in the international electrical business and transformer manufacturing, Daelim also has different certifications for different markets.
3000kVA Transformer Certifications
For the American market, Daelim has UL certification for the oil-immersed transformer. Up to 4000kVA and 34.5kV, Daelim can put the UL listed on our nameplate if you needed.
In the Canadian market. Daelim has CSA test report & certification for 3 units of 5MVA 44kV substation type power transformer, as your requirements. The difference between CSA and UL is that UL can be used on all the transformers including those in the listing range. The CSA certification needs to hire the CSA group people to come to the Daelim factory and inspect the tests every time. For example, if you did the CSA listed for a batch of transformers, the next time you order the same transformers, still need to pay for the CSA group to do the listing. Daelim has a good relationship and working experience with CSA China, you only need to pay the CSA testing fee and add around 2 weeks for the CSA testing, Daelim team will handle the CSA listing works in China.
For IEC standard, Daelim has IEC 60076 standard type test report for oil immersed distribution transformer, substation type power transformer, and dry type transformer. For Latin America, Asia & Africa markets, these test reports will help our customers to win the project from the end-user.
Also, Daelim welcomes third-party inspections of our factory or our office in Beijing. Customers might hire a third-party inspection company to visit our factory before making the order, to check our production line, testing equipment, meet our engineer team and production team, etc... Sometimes are famous companies of inspection such as SGS, BV, and ASIA IBS, sometimes our customers just ask a friend in China to do this work. No matter who will come, Daelim is always welcome and open to visitors.
With the third-party companies, Daelim has already dealt with SGS, BV, ASIA IBS, etc... We have an SGS test report for three-phase Pad-mounted Transformers, from 300kVA to 2500kVA; and we have worked with BV and ASIA IBS on our substation-type power transformer projects.
Keep reading: How to choose pad mounted transformer for Crypto Mining?
3000kVA Transformer Testings
Testing is the last but not least part of the power transformer production, it’ll make sure that the transformer will be shipped to the customer 100% perfect. Daelim will test every unit before shipping them to our customers based on the standard. Also after the factory test, our engineer team will offer the testing report to our customer, customers should confirm our test report with their engineer, then sign on our test report and send it back to us, so we will move on to the next step, pack up the transformers and ship to the customers.
Different type of transformers, based on different standards, has different test items. Such as the testing items below:
Insulating oil test
Measure the DC resistance of the winding together with the bushing
Check the voltage ratio of all taps
Check the three-phase wiring group of the transformer and the polarity of the single-phase transformer lead wire
Measure the insulation resistance of each fastener insulated from the iron core (the connection piece can be disassembled) and the iron core (with an external ground wire)
Test of non-pure porcelain casing
Inspection and test of on-load voltage regulation switching device
Measure the insulation resistance, absorption ratio, or polarization index of windings and bushings
Measure the dielectric loss tangent value tanδ of the winding and the bushing
Measure the DC leakage current of the winding and the bushing
Transformer winding deformation test
AC withstand voltage test of winding and bushing
Long-term induced voltage test with partial discharge test for winding and bushing
Impulse closing test under rated voltage
Check the phase.
Read more detail about the transformer test: Do You Know How To Do a Transformer Test?
750 kVA transformer specifications
750 kVA pad mounted transformer specifications
| Rated Capacity | 750 | Product Type | ZGS-Z-750-24000/480/240 | 60HZ | |
| 3Voltage Combination | HV(V) | 24000 | BIL | HV(kV) | 125 |
| LV(V) | 480/240 | LV(kV) | 30 | ||
750 kVA 20kV oil-immersed distribution transformer specifications
| Rated Capacity | 750 | Product Type | S11-M-750-20/0.4 | 60HZ | |
| 3Voltage Combination | HV(kV) | 20 | Loss | No-load loss | 900W |
| LV(kV) | 0.4 | On-load loss | 7000W | ||
750 kVA 10kV dry transformer specifications
| Rated Capacity | 750 | Product Type | SCB-750-10/0.4 | 60HZ | |
| 3Voltage Combination | HV(kV) | 10 | Loss | No-load loss | 1680W |
| LV(kV) | 0.4 | On-load loss | 7000W | ||
Read on: How To Purchase A 1000kva Transformer In 2022?
2500 kVA pad mount transformer
For 2500kVA box-type transformer, it can be radial feed or loop feed, you can choose Live front and Dead front. Because Dead front is safer than Live front, most of Dalin's box transformer customers choose Dead front. You can choose a single power supply or a dual power supply. Voltage levels are 4.16kV, 7.2kV,1247kV,13.2kV, 13.8kV, 19.92kV, 34.5kV, etc. You can choose the design standard according to the application area and project requirements, such as IEEE C57, CSA C88, DOE, etc.
2500 kVA transformer specifications
| Rated Capacity | 2500 | Product Type | ZGS11-H-2500/34.5-0.4 | 60HZ | |
| 3Voltage Combination | HV(V) | 34500GrdY/19920 | BIL | HV(kV) | 150 |
| LV(V) | 400GrdY/230 | LV(kV) | 30 | ||
Get it now: The Ultimate Guide to 2500KVA Transformer
2500 kVA transformer weight
For different types of 2500kva transformers, the weight is also different.
2500kva pad mounted transformer oil capacity about 1450L, total transformer weight about 6300kg.
2500kva substation transformer oil capacity about 700 L, the total weight of the transformer is about 4800kg
The total weight of 2500kva cast resin dry type transformer is about 7450kg.
1500 kVA transformer weight
For different types of 1500kva transformers, their weight is also different.
1500kva pad mounted transformer oil capacity about 850kg, total transformer weight about 4180kg.
1500kva substation transformer oil capacity about 860 L, the total weight of the transformer is about 3900kg
The total weight of 1500kva cast resin dry type transformer is about 5000kg.
Learn more about 1500kva transformer: The Ultimate Guide to 1500kVA Transformer
Conclusion
If you have any project that needs 3000kVA power transformers. Daelim will be your first choice:
- Rich experience. Daelim has rich experience in the international electrical industry, especially in the Canadian market and US markets. We have already sold thousands of units to the North American market, for solar farms, bitcoin mining farms, data centers, renewable energy projects, public utilities, etc...
- Professional engineer team. Daelim engineer team has rich experience with ANSI/IEEE, CSA, AS/NZS, and IEC standards. With good experience in designing, manufacturing, testing, etc... Any of your special technical requirements will not be a problem.
- Certifications: Daelim has UL, and CSA certifications for the North American market; SGS test report; IEC standard type test report, etc...
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