Dry Type Transformers Cast Resin

1250kVA oil immersed transformer,
33/0.4kV transformer
OLTC transformer
1250kVA oil immersed transformer,
33/0.4kV transformer
OLTC transformer

Anti-Seismic Cast Resin Dry Transformer

The Anti-Seismic Cast Resin Dry Transformer is designed for substations and power projects in seismic-prone regions. Its reinforced horizontal and vertical clamping structure improves the mechanical stability of the core and winding assembly and helps reduce displacement and loosening under seismic loads.

With vacuum cast resin insulation and an oil-free, fire-resistant design, the transformer is suitable for EPC projects, indoor substations, PV plants and industrial facilities. Rated capacity ranges from 100 to 6300 kVA, with voltage ratings from 6 to 35 kV, and seismic requirements can be customized according to project specifications.


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Basic Info.

Our anti-seismic dry-type transformer adopts high-strength steel anti-seismic clamping hardware with an integrated reinforcement structure. The horizontal and vertical restraints are designed to improve the mechanical stability of the transformer and reduce component displacement, loosening and collision under seismic vibration and mechanical shock.


The vacuum cast resin windings provide a compact structure, low partial discharge and good resistance to cracking, dust and moisture. The design is suitable for a variety of operating environments, including substations, industrial facilities and power projects in seismic regions.


A high-grade silicon steel core helps achieve low no-load losses and low operating noise. The self-extinguishing epoxy resin insulation provides fire-resistant performance and eliminates the risk of oil leakage associated with oil-filled transformers.


Customization is available for rated capacity, voltage level, cooling method, temperature controller and IP protection enclosure. The seismic reinforcement can be designed according to applicable project standards and tender requirements.


This model is widely applied in seismic-prone power projects across Southern Europe (Italy, Greece, Turkey), Middle East infrastructure and PV plants, as well as South American power projects (Chile, Peru, Ecuador) that require seismic reinforcement. It also suits indoor substations, underground power rooms, heavy-vibration workshops, and overseas government or EPC projects with mandatory seismic-performance requirements.


Performance parameters for reference

ItemSpecification
Product TypeAnti-Seismic Cast Resin Dry Transformer
Anti-Seismic ComponentReinforced anti-seismic clamping fittings with horizontal and vertical restraint
Rated Capacity100–6300 kVA
Rated Voltage6–35 kV / 0.4 kV or customized
Cooling MethodAN / AF
Insulation ClassF / H
Protection EnclosureIP00 / IP20 / IP23 / IP31
Applicable StandardsIEC 60076-11, GB/T 1094.11, IEEE 693, EN 1998 (Eurocode 8)
Seismic DesignCustomized according to project and tender requirements



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Why Anti-Seismic Design Matters

Seismic shock can cause winding displacement, mechanical loosening and structural stress if a transformer is not adequately reinforced. These effects may increase the risk of equipment damage and prolong post-earthquake recovery.


The reinforced anti-seismic clamping structure helps secure the transformer core and winding assembly and improves mechanical stability under seismic loading and vibration.


Combined with vacuum cast resin insulation, the transformer also provides fire-resistant, moisture-resistant and oil-free operation, making it suitable for indoor substations, industrial facilities and outdoor PV projects with appropriate enclosure protection.


For projects in seismic regions, the transformer structure and seismic requirements can be evaluated according to the applicable project standards, seismic parameters and tender specifications.

 


Frequently Asked Questions

Q1: What are anti-seismic clamping fittings?


Anti-seismic clamping fittings are reinforced mechanical components used to secure the transformer core and winding assembly. They help reduce displacement, loosening and mechanical stress caused by seismic vibration and mechanical shock.


Q2: Can you customize the anti-seismic design for different projects?

Yes. The seismic reinforcement can be customized according to transformer capacity, installation conditions, seismic parameters and project or tender requirements.

For European projects, seismic design can be developed according to Eurocode 8 or applicable project requirements. For projects in other seismic regions, IEEE 693 or the specified local or project standard can be considered where applicable.


Q3: Will the anti-seismic structure significantly change the overall transformer dimensions?

The reinforced clamping structure generally results in only minor changes to the transformer configuration. Overall dimensions can be optimized according to the project installation space and substation layout requirements.


Q4: What documents can you provide for overseas bidding?

Depending on the project and transformer configuration, we can provide technical datasheets, GA drawings, seismic calculation documents, type-test certificates and related factory test documents to support overseas EPC and tender requirements.


Q5: Will the anti-seismic design affect delivery time?

For standard ratings, the reinforced structure can be integrated into the existing production process with limited impact on lead time. The actual delivery schedule depends on transformer specifications, customization requirements and project documentation.


Our Service

  • Custom-made transformer solutions according to project technical datasheets

  • Anti-seismic structural design according to project requirements

  • Technical support for EPC contractors, distributors and project engineers

  • Tender supporting documents for overseas power projects

  • GA drawings, technical datasheets and available test documentation

  • Factory testing before delivery, including partial discharge and induced overvoltage tests according to applicable requirements

  • Seismic calculation or simulation support when required by the project

  • Global technical consultation and after-sales support

  • Customized capacity, voltage, cooling method and enclosure protection

  • Short lead time for standard configurations


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