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10kV S11/S13/S14 Series Oil-Immersed Power Transformers
- Core: <0.3mm CRGO steel, 45° step-lap, coated for moisture/corrosion protection;
- LV copper foil, HV multi-layer cylindrical windings: low leakage, high strength, excellent short-circuit withstand;
- Core and windings clamped; leads and fasteners use self-locking nuts for vibration/shock resistance;
- Vacuum-dried core/coils; vacuum-filtered and vacuum-filled oil minimizes moisture;
- Corrugated tank absorbs oil expansion, eliminates conservator, reduces height;
- Oil sealed from air, blocks oxygen/moisture: stable insulation, low maintenance, long life;
- Pressure relief valve: 35kPa actuation, pressure release, alarm, auto-reset；
- Temp. monitoring (≥800kVA): optional alarm, trip, light gas, heavy gas.
Contact support
Email10kV S11/S13/S14 Series Oil-Immersed Power Transformers Overview
Our 10kV hermetically sealed distribution transformers are designed for reliable and efficient power distribution with low losses. The fully oil-filled design and corrugated tank compensate for oil volume changes caused by temperature variations. The compact, maintenance-free design is available with either a fully welded tank cover or a bolted cover with nitrile rubber gasket sealing.
Product Features
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The core is manufactured from high-permeability cold-rolled grain-oriented silicon steel with a thickness of less than 0.3mm. A 45° full-miter step-lap structure is adopted, with the core surface coated for moisture and corrosion protection.
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The LV winding adopts a cylindrical copper foil structure, while the HV winding features a multi-layer cylindrical design, ensuring low leakage flux, high mechanical strength, and excellent short-circuit withstand capability.
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The core and windings are securely clamped. HV and LV leads, together with other fastening components, are fitted with self-locking nuts to withstand transportation-induced vibration and impact.
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The core and coils are vacuum dried, and transformer oil is vacuum filtered and vacuum filled to minimize moisture content.
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The corrugated tank compensates for oil volume changes caused by temperature variations, eliminating the need for an oil conservator and reducing the overall transformer height.
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It also isolates the transformer oil from the atmosphere, effectively preventing the ingress of oxygen and moisture. These features ensure stable insulation performance, low maintenance requirements, and long service life under normal operating conditions.
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Pressure Relief Valve: Operates at 35kPa to relieve excessive internal pressure and provide alarm indication. Automatic reset after pressure normalization.
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Temperature Monitoring: Available for transformers rated 800kVA and above. Optional functions include temperature alarm, temperature trip, light gas alarm, and heavy gas alarm.
Company Advantages
Main Components
Project Case
Specifications
| S11-M-30–2500/6–10 | Rated Capacity(kVA): 30-2500 HV Voltage(kV): 6/6.3/10/10.5/11 HV Tapping Range(%): ±5/±2x2.5 LV Voltage(kV): 0.4 No-Load Loss(W): 100-2290 Load Loss(W): 630/600-21200 No-Load Current(%): 0.4-1.5 Short-Circuit Impedance(%): 4.0/4.5/5 |
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| S13-M-30–2500/6–10 | Rated Capacity(kVA): 30-2500 HV Voltage(kV): 6/6.3/10/10.5/11 HV Tapping Range(%): ±5/±2x2.5 LV Voltage(kV): 0.4 No-Load Loss(W): 80-1830 Load Loss(W): 630/600-21200 No-Load Current(%): 0.3-1.0 Short-Circuit Impedance(%): 4.0/4.5/5 |
| S14-M-30–2500/6–10 | Rated Capacity(kVA): 30-2500 HV Voltage(kV): 6/6.3/10/10.5/11 HV Tapping Range(%): ±5/±2x2.5 LV Voltage(kV): 0.4 No-Load Loss(W): 80-1830 Load Loss(W): 505/480-16900 No-Load Current(%): 0.3-1.0 Short-Circuit Impedance(%): 4.0/4.5/5 |
Downloads
| File Name | Type | Language | File Type | Update | Download |
|---|---|---|---|---|---|
| Power Transformer Catalog | Catalog | English | 2026-06-11 | 4.76MB |
May 26-28, 2026
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