S11 S13 series 10 to 35 kV oil-immersed distribution transformer
GR-PET-35KV-S11S13

GR-PET-35KV-S11S13 S11/S13 10–35kV Oil-Immersed Distribution Transformer

Three-phase oil-immersed distribution transformer series for 10 kV, 20 kV, and 35 kV networks.

Specifications

SeriesS11 / S13
Product TypeThree-phase oil-immersed distribution transformer
Voltage Class10 kV / 20 kV / 35 kV
Rated Capacity Range30–6300 kVA
Cooling MethodOil-immersed self-cooled
WindingTwo-winding, concentric construction
Tap ChangingOff-circuit
Typical Low Voltage0.4 kV
Vector Group OptionsDyn11 / Yyn0
Core ConstructionThree-phase, three-limb stepped cylindrical core
Final ConfigurationVoltage ratio, capacity, losses, impedance, dimensions, and accessories confirmed by project

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Shipping & warranty

Shipping & delivery

Equipment and accessories can be shipped internationally. Freight, lead time, customs responsibility, and delivery access are confirmed for the destination and final order configuration.

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Limited warranty

Warranty eligibility is governed by the accepted quotation and applicable manufacturer terms. Consumables, normal wear items, and components depleted or degraded through ordinary use are not covered.

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01 · Overview

Built for the work.

The S11/S13 series covers three-phase oil-immersed distribution transformers for 10 kV, 20 kV, and 35 kV distribution systems. Available capacities span 30–6300 kVA, allowing the transformer to be selected for the network voltage, connected load, and end-user distribution requirements.

The design uses a three-phase, three-limb stepped cylindrical core and concentric winding construction for alignment and short-circuit strength. Published configurations include self-cooled, two-winding, off-circuit tap-changing transformers with Dyn11 or Yyn0 vector groups. Capacity, voltage ratio, tap range, impedance, losses, dimensions, weight, terminals, and accessories must be confirmed for the quoted project configuration.

02 · Applications

Where it performs.

  • Utility and industrial distribution networks from 10 kV to 35 kV
  • Commercial, manufacturing, and infrastructure power distribution
  • Project-specific step-down supply to end-user electrical systems
03 · Configuration

What’s included.

  • One S11 or S13 distribution transformer in the accepted project configuration
  • Final drawings, nameplate data, test-document scope, terminals, and accessories as stated in the quotation
04 · Planning

Specify before delivery.

Confirm utilities, site access, operating environment, consumables, ventilation, PPE, delivery handling, and local requirements before finalizing the configuration.

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Related guidance

Confirm the configuration before quoting.