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S11 Three-Phase Oil-Immersed Power and Distribution Transformer
Distribution Transformers

S11 Three-Phase Oil-Immersed Power and Distributi | 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.

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Product specs

CategoryDistribution Transformers
Unitset
ModelS11
ApplicationPower and distribution transformer service
Core materialCold-rolled grain-oriented silicon steel sheet
Winding materialCopper
Listed capacities15, 30, 50, 63, 80, 100, 125, 150, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 2000, 2500, 3150, 4000, 5000, 6300, and 8000 kVA;10 MVA is also listed
Transport packageWooden case
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 S11 core-type transformer is a three-phase, two-winding oil-immersed unit intended for power and distribution service. The supported product information lists copper as the material and identifies power-frequency operation.

Available configurations include high-voltage ratings of 33 kV or 35 kV with listed secondary voltages such as 11 kV, 10 kV, 6.6 kV, 415 V, 400 V, 380 V, and 0.4 kV. Rated voltage can be customized.

The listed family includes capacities from 15 kVA through 10 MVA, while the accompanying performance table also presents selected configurations up to 20,000 kVA. Depending on the rating, listed connection symbols include Dyn11, Yyn0, Yd11, and Ynd11.

High-voltage tapping ranges shown in the data include ±5% and ±2 × 2.5%. Heat-dissipation arrangements may use corrugated sheet or sheet radiators.

Supported construction details include a core made from cold-rolled grain-oriented silicon steel sheet, a 45-degree full-oblique-joint structure, and a round core cross-section. The states low loss, low noise, low partial discharge, low temperature rise, and resistance to short-circuit forces.

Outdoor service conditions are listed for elevations up to 1,000 m, with ambient temperatures from -25°C to +40°C. A special minimum temperature of -45°C and installations above 1,000 m are referenced as conditions to . The mounting environment is specified as free from corrosive gas and obvious dirt.

Before procurement, the buyer should confirm the exact capacity, primary and secondary voltage, tap-changing method, tapping range, connection group, short-circuit impedance, loss values, temperature-rise requirements, dimensions, total weight, oil weight, installation altitude, ambient-temperature range, and required accessories.

The buyer should also request the configuration-specific technical schedule and confirm whether an off-circuit or on-load tap changer is required. Any required certification edition, inspection documentation, testing scope, packing details, delivery terms, and warranty should be confirmed for the ordered unit.

S11 | Applications and Buyer Notes

S11 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.
Model
S11Based on visible page data; confirm exact value in the RFQ.
Application
Power and distribution transformer serviceBased on visible page data; confirm exact value in the RFQ.
Core material
Cold-rolled grain-oriented silicon steel sheetBased on visible page data; confirm exact value in the RFQ.
Winding material
CopperBased on visible page data; confirm exact value in the RFQ.
Listed capacities
15, 30, 50, 63, 80, 100, 125, 150, 200, 250, 315, 400, 500, 630, 800, 1000, 1250Based on visible page data; confirm exact value in the RFQ.
Transport package
Wooden caseBased 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
ModelS11
ApplicationPower and distribution transformer service
Core materialCold-rolled grain-oriented silicon steel sheet
Winding materialCopper
Listed capacities15, 30, 50, 63, 80, 100, 125, 150, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 2000, 2500, 3150, 4000, 5000, 6300, and 8000 kVA;10 MVA is also listed
Transport packageWooden case
Tap-changer seriesS9/S11/S13 with off-circuit tap changer;SZ9/SZ11/SZ13 with on-load tap changer
Normal installationOutdoor;elevation not more than 1,000 m
Cooling constructionOil immersed;corrugated sheet or sheet radiator may be used
Normal ambient range25°C to +40°C
Listed tapping ranges±5% and ±2 × 2.5%
Listed voltage ratios33 kV/11 kV, 33 kV/415 V, 33 kV/6.6 kV, 33 kV/380 V, 35 kV/10 kV, 35 kV/0.4 kV
Special minimum ambient45°C, subject to order details
Listed high-voltage ratings33 kV and 35 kV

Product sourcing keywords

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