20kV Oil-Immersed Distribution Transformer
Standards
GB / IEC 60076
Testing
Routine report
Origin
China
20kV Distribution Transformers
500 kVA 20 kV Oil-Immersed power Transformer
In the context of the widespread adoption of 20KV high-voltage power supply systems and the upgrading of factory areas, many enterprises encounter problems such as increased electricity load and limited selection of high-voltage equipment. The 500kVA 20KV oil-immersed power transformer is specifically designed for high-voltage medium-load conditions and is suitable for industrial and mining enterprises, expansion of industrial parks, rural high-voltage power distribution, and distributed energy support projects. The equipment can be combined with Box Type Substation for complete integration, and together with High And Low Voltage Switchgear , it can complete the overall power distribution layout, meeting the actual needs of current high-voltage power grid construction.
- Product type
- 20kV Oil-Immersed Distribution Transformer
- Rated capacity
- 500 kVA
- Voltage class
- 20 kV
- Cooling
- ONAN / ONAF
- Tap range
- Off-circuit or on-load, project-specific
- Winding
- Copper or aluminium (project-specific)
Final ratings, losses, impedance and dimensions are confirmed on the approved datasheet. Website values are for family selection.
- Routine test report with the unit
- English GA drawing and O&M manual
- Copper or aluminium winding options
- 50 Hz / 60 Hz and harsh-site options
Product overview
500kVA 20KV Oil-immersed Power Transformer
In the context of the widespread adoption of 20KV high-voltage power supply systems and the upgrading of factory areas, many enterprises encounter problems such as increased electricity load and limited selection of high-voltage equipment. The 500kVA 20KV oil-immersed power transformer is specifically designed for high-voltage medium-load conditions and is suitable for industrial and mining enterprises, expansion of industrial parks, rural high-voltage power distribution, and distributed energy support projects. The equipment can be combined with Box Type Substation for complete integration, and together with High And Low Voltage Switchgear , it can complete the overall power distribution layout, meeting the actual needs of current high-voltage power grid construction.
The equipment has a wide range of applications. It can either be used alone as the main power supply equipment for a region or combined with Oil Immersed Transformer and Dry Type Transformer for networking. By using Electric Power Converter to stabilize power quality, it can smoothly connect to Combined Photovoltaic Substations , helping the factory to achieve the integration and utilization of new energy, balancing both conventional production electricity and green power supply models, and having strong overall adaptability, suitable for the alternating upgrade of new and old power distribution systems. Product Features The high-voltage insulation configuration has been upgraded to meet the 20KV rated operation standard. The load output is stable, and it can smoothly handle peak daytime electricity consumption and periodic load increases. The operating loss is controlled reasonably.
The overall sealed box design ensures reliable protection performance. It is suitable for various installation environments such as open distribution rooms and outdoor independent locations. The structure is stable, and the daily operation has strong anti-interference ability.
Tips for Use Keep the placement location well-ventilated and dry, and reserve sufficient heat dissipation space. Avoid long-term enclosed and stuffy conditions to delay component aging. During periods with large temperature differences in the season, pay attention to the sealing status of the box to prevent water vapor from entering the interior and maintain the long-term stable operation of the equipment.
Q&A Q1: Is this model more suitable for new projects or for upgrading old lines? A1: Both scenarios can be compatible. The overall parameters are standardized, the installation interfaces are universal. New projects can be directly installed in a complete set, and the upgrading of the 20KV old lines does not require significant changes to the basic lines. The renovation cycle is short.
Design features
What the design is built around
Low-loss magnetic core
Cold-rolled grain-oriented silicon steel and a stepped core reduce no-load loss and audible noise.
Sealed tank construction
Welded tank, quality-gasketed cover and pressure-tested seals reduce oil leakage risk in outdoor duty.
Thermal margin for hot climates
Cooling surfaces and oil volume are selected for high ambient temperature and cyclic loading.
System compatibility
MV terminals, cable boxes and LV bushings are matched to the switchgear and protection scheme.
Typical specification
Specifications to confirm on the datasheet
| Product type | 20kV Oil-Immersed Distribution Transformer |
|---|---|
| Rated capacity | 500 kVA |
| Voltage class | 20 kV |
| Cooling | ONAN / ONAF |
| Tap range | Off-circuit or on-load, project-specific |
| Winding | Copper or aluminium (project-specific) |
| Standards | GB 1094.1, GB/T 6451, IEC 60076 |
| Testing | Routine tests plus type and special tests on request |
The table is a family-level starting point. The approved datasheet fixes the guaranteed values, drawing dimensions and test plan for the specific order.
Typical applications
- 20 kV industrial distribution
- Mining and heavy industry
- Renewable-energy collection systems
- Ports and logistics parks
- Utility substations
Confirm before ordering
- Rated capacity, voltage ratio and tap range
- Impedance, fault level and parallel operation
- Ambient temperature, altitude and enclosure
- Winding material, losses and efficiency class
- Terminations, protection and monitoring
- Tests, inspection, packing and shipping limits
Buyer questions
FAQ for 500 kVA 20 kV Oil-Immersed power Transformer
What is 500 kVA 20 kV Oil-Immersed power Transformer best used for?
What is the typical lead time for 500 kVA 20 kV Oil-Immersed power Transformer?
Which standards and tests are supplied?
Can the transformer be customised for 60 Hz or a hot climate?
How do I choose between copper and aluminium windings?
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