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Daelim has specialized in designing and manufacturing transformers for more than 15 years. We can complete the design to delivery within 6~8 weeks. Professional transformers serve more than 40 Bitcoin mines.

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Table of Contents

Three Phase Pad Mounted Transformer


  • Rated capacity: 1500~5000kVA.
  • Primary voltage: 12.47/13.2/13.8/14.4/24.94/27.6/34.5kV
  • Secondary voltage: 220/240/480/600V
  • Frequency: 50HZ/60HZ
  • Number of turns: 2 windings.

Mini Substation Transformer

  • It adopts radiator oil tank of corrugated shteet type or expansion type.
  • As it doesn’t need oil conservator, the height of transformer is reduced.
  • As the transformer oil doesn’t contract with air, the oil ageing is retarded, thus prolonging the service life of transformer.
  • The no-load loss of Model S10-M is 20% lower than that of Model S9-M, and S11-M is 30% lower thanS9-M.
  • Meeting various international standards, such as IEC, IEEE, ANSI, CSA.


  • Rated capacity: 400~2500kVA.
  • Primary voltage: 11kv/22kv/33kv
  • Output Voltage: 6.3
  • Frequency: 50HZ/60HZ

DRY-TYPE Transformer

  • Conformity with the standard of IEC726, GB/T10228-1997.
  • With features of low loss, compact and lightweight, low noise level, damp-proof, high mechanical strength, flame resisting, strong overload ability, and low partial discharge quality.
  • They are applicable to power transmission and distribution systems, especially to heavy load centers and places with special fire protection requirements.


  • Rated capacity: 50kva-2500kva or others.
  • Primary voltage: 35/38.5 or others
  • Secondary voltage: 220/240/480/600V
  • Frequency: 50HZ/60HZ
  • Secondary voltage:0.4 or others
  • Number of turns: 2 windings.
Dry-type transformer TypeCast resin
Manufacturing StandardsIEC, ANSI,GB
Rated CapacityUp to 25MVA
Rated VoltageUp to 36KV
PhasesSingle or Three Phase
TappingWith tapping links or on-load tap changer
Frequency50Hz or 60Hz
Vector groupsDy, Yy, Yd as standard. Other on request
Class insulationAccording to IEC 60085, Class F or Class H
Type of coolingAN (natural air),AF, AFWF on request
IP RateIP00 to IP54
Environment ClassE2
Environment ClassC2
Fireproof ClassF1

Three Phase Oil-immersed Distribution Transformer

  • Three-phase oil immersed distribution transformers comply with the standard of ANSI C57.12.00, IEC60076, GB1097 (Power transformer), and GB/T6451 (Technical parameter and requirements for three-phase oil-immersed power transformer).
  • Both no-load loss and on-load loss are much lower, good quality C.R.G.O.
  • Core type, high-quality oxygen-free copper coil, good appearance, safe operation.


  • Rated capacity: 500~5000kVA.
  • Primary voltage: 10kv/20kv/30kv
  • Secondary voltage: 0.208/0.4/0.6 or others
  • Frequency: 50HZ/60HZ


Until now, Bitcoin mining power transformers have been shipped out from Daelim's transformer production plant in China every month. They were sent to the United States, Canada, Russia, Ukraine, Venezuela, Kenya and other countries. These countries are also the countries with the most bitcoin production in the world.
  • Designed for Bitcoin mining power system, providing professional services for your mining farms;
  • Rich experience, applied in many countries, can quickly customize the program for you;
  • The power utilization rate is more than 15% higher than other transformers in the market, saving you money;
  • 15 years of the transformer production factory, professional design team, fast effect;
Currently, Bitcoin mines mainly use three-phase power supplies.
Mainly used in places that require a large amount of electricity, such as industry, commercial core areas, Bitcoin mining farms, etc.
In North America, the main output voltage of the power station is usually between 12kv and 36kv. When outputting power from a power plant, boosting is performed in order to increase efficiency. Decompression distribution will be carried out to the use area.
This has created a contradiction in the electricity demand of the encrypted farm. Because the PSU of the encrypted farm requires high-voltage power to improve the efficiency of digging.
Therefore, the encryption farm needs to purchase step-up transformers.
The configuration of power transformers in Bitcoin mines is mainly calculated according to MW:
That is: 10mw requires 4 sets 2500kva step-down transformers.
Determine how many step-down transformers you need to purchase based on the MW used by your encryption farm.
There are two main types of step-up transformers suitable for encryption farms: pad-mounted transformer and mini substation Transformer.
Large encryption farms usually choose pad-mounted transformers. Small and medium encryption farms usually buy: mini substation Transformer.
You can also tell us your needs. We can provide you with solutions.
  • Output power: The designed transformer must satisfy that the secondary winding can transmit the rated power to the load, so as to meet its operating requirements.
  • Operational efficiency: It determines the maximum power loss allowed by the transformation.
  • Maximum temperature rise: When the transformer works under certain conditions, its ambient temperature, heat dissipation capacity, altitude and other factors must be considered.


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About Bin Dong

Hello, I am Bin, General manager of Daelim which is a leading transformer manufacturer. As a expert, I am glad to share my experience in transformer to you. I believe our professional team can always provide you with high quality service and we are ready to provide you with one stop solution. If you have problems when you are looking for the equipment, what you need to do is tell us.