S11 Oil-immersed Distribution Transformer

Name: Oil-immersed Distribution Transformer (S11 Series)
Brand: BeiDian Electric
Availability: InStock

The S11 series is our best-selling distribution transformer — a full-sealed, low-loss design trusted by utilities and contractors for daily power distribution duty.

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Technical Specifications

Voltage Class 6kV – 10kV – 15kV

Capacity Range 30kVA – 2500kVA

Frequency 50Hz / 60Hz

Vector Group Dyn11 / Yyn0

Insulation Level LI75 AC35 / LI95 AC42

Cooling Method ONAN / ONAF

Standard IEC 60076, GB 1094.1

No-load Loss S11 / S13 / S15 Grade

Key Features

Why Choose This Product

S11 Series delivers dependable performance backed by manufacturing under a quality management system aligned with ISO 9001 and 100% factory testing.

High-quality cold-rolled silicon steel sheet core

Low-loss, high-permeability silicon steel core holds no-load loss to S11/S13/S15 grade, cutting long-term operating cost.

Full-sealed corrugated oil tank, no oil conservator

Hermetically sealed corrugated tank keeps insulating oil free of moisture and oxygen, extending insulation life with no oil maintenance.

Low noise level (≤55dB)

Quiet operation below 55 dB makes it ideal for urban and residential installations near living areas.

Strong overload capacity and short-circuit resistance

Robust winding and core clamping withstand overload and short-circuit stress, meeting IEC 60076 fault-duty requirements.

Service life ≥ 30 years

Full-sealed design and quality materials deliver a proven service life of 30 years or more.

Applications

Typical Applications

▸Urban and rural power distribution networks

▸Rural electrification projects across Africa

▸Industrial parks and factory power supply

▸Solar and wind power grid connection

▸Mining and agricultural power supply

S11 Oil-immersed Distribution Transformer

Technical Specifications

Why Choose This Product

High-quality cold-rolled silicon steel sheet core