Substation transformer
- Primary Voltage Ratings: 2.4kV/4.16kV/4.8kV/6.9kV/7.2kV/12kV/12.47kV/13.2kV/13.8kV/23kV/34.5kV/44kV
- Secondary Voltage Ratings: 208Y/240/480/600/2400/4160Y/4800/12000/12470/13200/13800
- CONNECTION TYPE: Dyn1, Dyn11, YNd1, Dd0
- TYPE: Oil immersed
- BIL: 30-250kV
- Standards: IEEE/ANSI, CSA, DOE, IEC, AS/NZS
- Application: Industry, Sustation, BESS, data center, EV charging
- Power Rating: 300-20000kVA
Daelim's substation transformers are oil-filled and hermetically sealed with ul/cul,csa. High voltages up to 44kV, Ratings up to 15MVA. These types of transformers are components of partable substations and are connected to high and low-voltage switchgear. They are widely used in areas where power distribution is required, such as residential, commercial, and industrial developments.
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How To Purchase 3000kVA Transformer In USA & Canada
Daelim substation transformer certificates
Daelim is a professional transformer supplier. Has 20 years of experience in international standard transformer design and export. Has passed the third-party professional level of UL/cUL, CSA, and IEEE certification.


10.5MVA-13.8/2.4kV Substation Transformer
Daelim Transformer Advantages
Local services
There are transformer after-sales service, installation, and maintenance teams in Canada, the United States, Australia, Ecuador, Chile, and other places. Provide 24-hour technical and consulting services. There is a local after-sales service team with rich experience in power engineering to help you solve all problems related to transformers.
Transformer project solutions
Daelim transformers are not just transformer manufacturers and suppliers. It has a professional power technical engineer team to help you solve technical problems and provide the best solution for your power project. The Daelim team has provided many transformer solutions to customers in North America, Europe, South America, and Australia, such as blockchain areas, factories, residential areas, wind power generation, solar photovoltaic power generation, battery energy storage systems (BESS), etc.
Transformer Customized service
The engineering team of Daelim Transformers has more than 20 years of experience in international standard design and is proficient in various international standards worldwide. Whether a power project in the United States, a blockchain project in Canada, or a skid-mounted substation project in Australia, Daelim engineers can design transformers according to the project and technical requirements.
High-quality and fast delivery
Daelim has strict technical and quality control system to ensure the safety and reliability of each transformer. There is also a third-party inspection agency UL to supervises the entire quality system of the factory every three months. Therefore, you can buy Daelim transformers with confidence.
In addition to guaranteed quality, another advantage of Daelim transformers is fast delivery. The production time of conventional distribution transformers is 6-8 weeks.
Learn more: The Ultimate FAQs Guide 5000kVA Transformer
Substation Transformer Specifications
| Rating | Height(inch) | Wide(inch) | Deth(inch) | Total Weight(lb) |
| 750 kVA | 90 | 50 | 60 | 6400 |
| 1000 kVA | 90 | 60 | 70 | 7300 |
| 1500 kVA | 95 | 60 | 75 | 9500 |
| 2000 kVA | 95 | 65 | 75 | 11400 |
| 2500 kVA | 95 | 65 | 80 | 13100 |
| 3000 kVA | 100 | 70 | 90 | 15800 |
| 3750 kVA | 105 | 70 | 90 | 18200 |
| 5000 kVA | 105 | 75 | 95 | 22000 |
| 7500 kVA | 120 | 80 | 110 | 29000 |
| 10000 kVA | 130 | 80 | 135 | 32800 |
| 12000 kVA | 130 | 85 | 135 | 38200 |
| 15000kVA | 130 | 130 | 135 | 70000 |
If you need other capacities of the substation transformer, please contact the Daelim team for accurate technical solutions and quotations.
More details about the Daelim Substation Transformer
Substation Transformer Standard Features
| Standard Features | |
| *Carbon steel, optional stainless steel tank *Capacity: 225kva —20MVA *Primary Voltage: 13800V,23000V,34500V,44kV or others *Secondary Voltage: 208V ,12,470V,132,00V,13,800Vor others *Bushings: Top-mounted / Side-mounted *Insulation Fluids: mineral insulating oil, Envirotemp™ FR3™ fluid, *Standards: ANSI/IEEE, DOE, CSA, AS/NS, IEC, etc * Insulating mineral oil * 60/50 Hertz operation * Externally operated de-energized tap changer with 2* 2.5% full capacity taps above and below nominal
| * 65°C average winding rise * HV and LV bushings * HV and LV flange connections * Pressure-vacuum gauge * Liquid level gauge * Liquid temperature gauge *Pressure test valve * Drain/filter valve with the sampling device * Tank lifting lugs * Corrosion-resistant nameplate * Hydran provision (above 7.5 MVA)
|
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Substation Transformer Optional Accessories
The accessories that come with the Daelim substation transformer have electric shocks to allow remote operation and control of the transformer. We have international famous brands for accessories, such as ABB, Qualitrol, Quality, MR, etc. If you have brand requirements for transformer accessories, please let the Daelim team know.

| Optional Accessories | |
| • High-fire point fluid, such as silicone, hydrocarbon, or vegetable fluids. (up to 10 MVA) • 55°C 55/65° C average winding rise • Forced air cooling • Forced air cooling with 2 stages (from 7.5 MVA and up to 15 MVA) • Removable radiators • Pressure relief device • Winding temperature device • Sudden pressure relay with or without seal in • Devices with alarm contacts • Top filter press valve | • Special impedances • Low losses • Special environment (i.e: classified areas) • Special/low sound level • Retrofit to specific dimensions • Non-standard loading conditions such as harmonic loading or specified K-factor • Stainless steel removable radiators • Galvanized steel removable radiators • Special paint for marine ambient • Special paint thickness • Special colors • CSA compliance • Other special features upon request |
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Design Performance Tests
The design performance tests include the following:
*Temperature Rise: Our automated heat run facility ensures that any design changes meet ANSl® and IEEE® temperature rise criteria.
* Audible Sound Level: Ensures compliance with NEMAO requirements.
* Lightning Impulse: To assure superior dielectric performance, this test consists of one reduced wave, two chopped waves, and one full ave in sequence, precisely simulating the harshest conditions.
* Other performance tests such as short-circuit capability tests, listing, and moving devices tests can be executed while specified by the customer.
Get it now: How to test a power transformer?
Transformer Test
Each transformer must be tested before leaving the factory. The routine tests include
•Ratio, Polarity, and Phase Relation
•Resistance
•Applied Potential
•Induced Potential
•Loss Test
•Leak Test
•Operation tests of all devices: All electrical and electro-mechanical devices shall be operated both in auto and manual mode for proper sequencing/staging and function.
If you need special tests like short circuits, Daelim Transformer can do that too.
Daelim small substation transformer test report
Daelim will send a transformer report to the customer before the transformer is packaged and shipped. All physical and electrical properties of the transformer can meet or exceed the standard before delivery.
| Ratings & Transformer Main Information | ||||||||||||||
| 1. Phase | 3Ø | |||||||||||||
| 2. Capacity | 3000KVA | |||||||||||||
| 3. Core Type | Wound | |||||||||||||
| 4. Cooling Method | ONAN | |||||||||||||
| 5. Rated Frequency | 60Hz | |||||||||||||
| 6. Applied Standard | CSA C88-16 | |||||||||||||
| 7. Vector Group | Dyn 1 | |||||||||||||
| 8.1 Rated Primary Voltage | 4160V | |||||||||||||
| 8.2 Rated Secondary Voltage | 400V | |||||||||||||
| 9.1 Rated Primary Current | 416.4 A | |||||||||||||
| 9.2 Rated Secondary Current | 4330.1A | |||||||||||||
| 10.1 Insulation Primary Level | LI/AC:60/19 kV | |||||||||||||
| 10.2 Insulation Secondary Level | LI/AC:30/10 kV | |||||||||||||
| 11. Date Of Manufacturer | April 16, 2022 | |||||||||||||
| 12. Oil Volume | 1500L | |||||||||||||
| 13. Total Weight | 6500 kg | |||||||||||||
| 1、Specification | |||||||||||||||||
| Rated Capacity | 3000 | Product Type | SL-3000/4.16 | 60HZ | Factory Serial No. | DL2204019 | |||||||||||
| 3Voltage Combination | HV(kV) | 4.16 | Current | HV(A) | 416.4 | Angular displacement | Dyn 1 | ||||||||||
| LV(kV) | 0.4 | LV(A) | 4330.1 | ||||||||||||||
| 2、 Measurement of voltage ratio: Tolerance(+/-0.5%) | |||||||||||||||||
| Tapping Position | HV and LVThe Voltage Value of the Test The Grade and Accuracy: QJ3 5A Grade 0.2 | HV (V) | LV(V) | HV/LV(%) | |||||||||||||
| AB/ab | BC/bc | AC/ca | |||||||||||||||
| A | 4368 | 400 | -0.18 | -0.18 | -0.18 | ||||||||||||
| B | 4264 | 0.23 | 0.23 | 0.23 | |||||||||||||
| C | 4160 | -0.02 | -0.02 | -0.02 | |||||||||||||
| D | 4056 | 0.39 | 0.39 | 0.39 | |||||||||||||
| E | 3952 | 0.12 | 0.12 | 0.12 | |||||||||||||
| 3、 Measurement of winding resistance (Routine) | |||||||||||||||||
| Tapping Position | Winding Resistance Measurement | HV (Ω) | LV(Ω) | ||||||||||||||
| AB | BC | CA | ab(Ω) | 0.0002803 | |||||||||||||
| A | 0.03066 | 0.03061 | 0.03085 | ||||||||||||||
| B | 0.02999 | 0.02998 | 0.03017 | ||||||||||||||
| bc (Ω) | 0.0002888 | ||||||||||||||||
| C | 0.02904 | 0.02906 | 0.02920 | ||||||||||||||
| D | 0.02835 | 0.02934 | 0.02850 | ||||||||||||||
| aC(Ω) | 0.0002911 | ||||||||||||||||
| E | 0.02713 | 0.02714 | 0.02720 | ||||||||||||||
| The Meter NO. and Grade of Accuracy | HCR3102A Grade 0.2 | Temperature | 15℃ | Humidity | 63% | ||||||||||||
| 4、No-load loss and no-load current test. | |||||||||||||||||
| Test Items | No-Load Loss at 100% rated voltage W | No-Load Current % | |||||||||||||||
| Measured Value | 2941 | 0.16 | |||||||||||||||
| 5、Load loss and Short circuit test. | |||||||||||||||||
| Test Items | Load Loss at 85°C and rated voltage W | Total Loss W | Short Circuit Impedance at 85°C | ||||||||||||||
| Measured Value | 27735 | 30676 | 5.32 | ||||||||||||||
| 6、 Applied voltage test | |||||||||||||||||
| Power Frequency withstand Voltage Test | |||||||||||||||||
| Test Time | 60 S | ||||||||||||||||
| The Test Voltage(kV) | HV19 /LV10 | ||||||||||||||||
| The Test Result | No flashover | ||||||||||||||||
| 7、Induced Over Voltage Withstand Test | |||||||||||||||||
| Induced Over Voltage Withstand Test(kV) | 0.8 (RMS) for L.V. bushing | ||||||||||||||||
| 8、 Insulation Resistance test | |||||||||||||||||
| location | Insulation Resistance( M Ω) at 10℃ R60 | ||||||||||||||||
| HV-E | >2500 | ||||||||||||||||
| LV-E | >2500 | ||||||||||||||||
| 9、 Other Information. | |||||||||||||||||
| The Active Part’s Weight of Lifting | The Weight of Insulation Oil | Total Weight | The Temperature Rise of the Oil | Oil Pressure | |||||||||||||
| 3060Kg | 1500L | 6500Kg | <65K | 45KV | |||||||||||||
| 10、Leakage test (Routine) | |||||||||||||||||
| Test method | Applied pressure(kPa) | Duration(h) | Residual pressure(kPa) | Result | |||||||||||||
| The static pressure method | 50 | 12 | 48 | No leakage and no damage | |||||||||||||
Daelim Substation Transformer Packaging
Daelim transformers are usually packed in two ways, one is wooden box packing, and the other is wooden pallet packing. It is mainly based on whether the shipping is FCL or LCL.
The whole container transportation adopts the packaging method of wooden pallets, which can save costs while ensuring safety during transportation.
The transformers are packed in wooden boxes when they are transported in LCL because the wooden boxes are sufficiently strong and stable. The safety of the transformer can be guaranteed on the bumpy road.
Daelim Factory
Daelim will send a transformer report to the customer before the transformer is packaged and shipped. All physical and electrical properties of the transformer can meet or exceed the standard before delivery.
The Daelim factory is located in the hometown of transformers, Haian, Jiangsu, where there is a complete supply chain of transformers and skilled transformer workers. It is only 200km away from Shanghai port.
Therefore, Daelim has the ability to deliver fast. You can check the progress of your transformer order and production link on the daelim website at any time.
Daelim also supplies three-phase pad-mounted transformers, single-phase pad-mounted transformers, Hv power transformers, pole mounted single phase transformers, and dry-type transformers.
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