S11-315kVA – cost-effective, dependable, ready to ship.
The S11 series is a three-phase, oil-immersed distribution transformer designed for reliable step-down conversion from medium to low voltage. This 315kVA unit converts 20kV input to 400V output, making it ideal for industrial facilities, commercial complexes, and residential power distribution.
Key Specifications
Parameter Value
Model： S11
Rated Capacity： 315 kVA
Primary Voltage： 20 kV
Secondary Voltage： 400 V
Frequency： 50 Hz
Vector Group： Dyn11 / Yyn0 (optional)
Cooling Method： ONAN (Oil Natural, Air Natural)
Core Features
- Low Energy Loss: S11 series offers lower no-load and load losses compared to S9/S10 models – reduces annual electricity costs.
- Reliable Construction: High-quality cold-rolled grain-oriented silicon steel core and oxygen-free copper windings ensure stable performance and long service life.
- Effective Cooling: Corrugated tank design improves heat dissipation and allows oil expansion without leakage.
- Durable Protection: Equipped with oil level gauge, thermometer, pressure relief valve, and Buchholz relay for safe continuous operation.
Applications
- Factory power distribution
- Commercial building supply
- Residential community grid connection
- Rural electrification projects
Quality Assurance
Each transformer undergoes full routine tests – ratio test, resistance measurement, insulation test, and losses verification – before delivery. Built to IEC 60076 or ANSI standards per customer requirement.
Available Options
- Off-load or on-load tap changer
- Stainless steel or galvanized tank
- Customized dimensions for existing substation footprints
Quick Inqui
Please confirm your required voltage combination, frequency (50/60Hz), and installation conditions for a prompt quote. Stock units available for urgent projects.
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