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680 kVA 20 kV/0.4 kV Oil-Immersed Copper Distribution Transformer
Distribution Transformers

680 kVA 20 kV/0.4 kV Oil-Immersed Copper Distribu | RFQ Sourcing Details

Distribution Transformers · Quote on request

This is a product procurement detail page: check specs, images, category context and related sourcing paths before sending an RFQ.

Quote on request

Product specs

CategoryDistribution Transformers
Unitset
PhaseThree-phase
Frequency50 Hz or 60 Hz
InsulationClass A with mineral insulating oil
Low voltage0.4 kV (400 V)
High voltage20 kV
Winding typeSeparated winding
CategoryDistribution Transformers
AvailabilityInquiry required
Source date2026-07-21

Buyer's Digest

Use this page as a product-first sourcing checkpoint before sending an RFQ. Category: Distribution Transformers. Confirm application fit, capacity, materials, destination, lead time and compliance requirements before comparing suppliers.

Original product description

This 680 kVA oil-immersed distribution transformer is presented with a 20 kV high-voltage side and a 0.4 kV low-voltage side. It is intended for power and distribution duties, including photovoltaic and energy-storage projects where the stated voltage ratio and capacity match the system design.

The listed configuration is three-phase and uses separated high- and low-voltage windings. Supported construction details include oxygen-free copper windings and a core made from high-permeability, cold-rolled silicon steel sheet. The transformer uses mineral insulating oil and Class A insulation.

Its fully sealed corrugated tank is designed to accommodate changes in oil volume as temperature varies without an oil conservator. Listed accessories include a pressure-relief valve, oil-level gauge and temperature controller.

The broader product family supports 50 Hz or 60 Hz operation, single-phase or three-phase configurations, and connection groups including Dyn11 and Yyn0. Custom voltage ratios and connection groups are also described as available.

The stated standard operating environment is an altitude no greater than 1,000 m and a maximum ambient temperature no greater than 40°C.

Procurement questions to confirm: Buyers should verify that the offered unit is specifically rated 680 kVA at 20 kV/0.4 kV, as the supplied information also describes a wider configurable product range.

Confirm the required frequency, vector group, phase arrangement, tap configuration, impedance, insulation level, temperature-rise limits, loss values and applicable technical standard.

Also request the final outline drawing, terminal arrangement, accessory schedule, oil specification, test documentation, enclosure details and site-specific environmental rating before approval.

The winding conductor, cooling arrangement and protection interfaces should be recorded in the purchase specification rather than inferred from the product-family description.

680 | Applications and Buyer Notes

680 is organized as a sourcing-ready Distribution Transformers reference. The page combines visible product or company data with structured procurement cues so buyers can compare application fit, specifications, quantity, quality requirements and lead-time que

Applications

  • Initial shortlist building for related product or supplier options.
  • Specification and application fit review before bulk purchasing.
  • Category, keyword and detail-page comparison before sending an RFQ.

Key specifications

Category
Distribution TransformersBased on visible page data; confirm exact value in the RFQ.
Unit
setBased on visible page data; confirm exact value in the RFQ.
Phase
Three-phaseBased on visible page data; confirm exact value in the RFQ.
Frequency
50 Hz or 60 HzBased on visible page data; confirm exact value in the RFQ.
Insulation
Class A with mineral insulating oilBased on visible page data; confirm exact value in the RFQ.
Low voltage
0.4 kV (400 V)Based on visible page data; confirm exact value in the RFQ.
High voltage
20 kVBased on visible page data; confirm exact value in the RFQ.
Winding type
Separated windingBased on visible page data; confirm exact value in the RFQ.

Buyer tips

  • State quantity range and split-delivery needs before price comparison.
  • Add certification, material or inspection standards when they affect acceptance.
  • For time-sensitive projects, include target arrival date and destination.
  • For special applications, describe operating condition, installation environment and duty cycle.

FAQ

What should buyers confirm first?

Confirm application, specification, quantity, destination and lead-time requirements before comparing offers.

Can buyers inquire when specs are incomplete?

Yes. Add model, material, size, use case and inspection needs in the RFQ to make replies comparable.

How should this listing be evaluated?

Check title, category, specifications and related keywords against the actual sourcing requirement.

Source mix: ugc

Key specifications

CategoryDistribution Transformers
Unitset
PhaseThree-phase
Frequency50 Hz or 60 Hz
InsulationClass A with mineral insulating oil
Low voltage0.4 kV (400 V)
High voltage20 kV
Winding typeSeparated winding
Rated capacity680 kVA
Transformer typeOil-immersed distribution transformer
Listed connection groupsDyn11, Yyn0, or customized

Product sourcing keywords

These terms come from the title, visible copy and specifications, and link into matching aggregate pages.

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