Oil Immersed Power Transformer

• The Oil Immersed Power Transformer is offered for 35kV/10kV and 110kV/10kV power systems.
• Rated capacity spans 3150kVA to 100000kVA, covering main transformation duties in grid substations, large industrial main substations, and renewable-energy step-up stations.
• Impedance can be specified within a 4%–14% range according to the project electrical design.
• The stated application range centers on large-capacity, continuous-operation power projects, so buyers should match the transformer rating to the system scheme rather than select only by nominal capacity.

• Copper windings are used together with oil-immersed insulation.
• Cooling options include ONAN natural oil circulation with natural air cooling and ONAF forced-air cooling.
• The temperature-rise limit is 65K.
• Cooling method and impedance should be selected together with system voltage, capacity, and operating conditions rather than treated as separate purchasing items.

• Custom production may be based on rated voltage, capacity, required impedance, cooling arrangement, and buyer technical drawings.
• Technical parameters can be submitted before order confirmation for review and agreement.
• OEM/ODM cooperation is available where the relevant authorization requirements are completed.

• Incoming materials are inspected before use, while multiple manufacturing stages are checked during production.
• Electrical performance testing is carried out after manufacturing is completed.
• Hebei Biot Electric Co., Ltd. performs 100% electrical performance testing before packing, and buyers may arrange third-party factory inspection for project acceptance needs.

• Export units receive rust-prevention treatment as appropriate and are packed in reinforced solid-wood cases for ocean and long-distance transportation.
• Customized units generally require 20–35 working days, depending on capacity, technical drawings, and confirmed requirements.
• Photos or videos may be supplied at key production stages.
• EXW and FOB terms are supported.
• For an Oil Immersed Power Transformer quotation, provide high- and low-voltage ratings, capacity, impedance, cooling method, quantity, technical drawings, and packing or delivery requirements.

Hot Tags: oil immersed power transformer, China oil immersed power transformer manufacturers, suppliers, factory