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The Single-Phase Oil-Immersed Transformer is a core equipment for small-to-medium capacity single-phase power distribution. Using high-quality oil for insulation and cooling, it offers stable performance and overload capability. Ideal for rural centralized metering, small shops, single-phase industrial equipment, and old residential grid upgrades. It operates stably in standard climates, meeting single-phase distribution needs efficiently.
Core Parameters:
• Energy Efficiency: Tier 2 Efficiency (Complies with GB 20052-2024).
• Maintenance: Periodic Maintenance Design (Oil quality & sealing checks required).
• Warranty: 3-Year Standard Warranty.
A single phase oil immersed transformer is a reliable power distribution solution designed for residential, commercial, and industrial applications. It uses high-quality insulating oil to provide excellent cooling performance, stable operation, and enhanced electrical safety. This transformer features compact structure, low energy loss, strong overload capacity, and long service life, making it suitable for various voltage conversion requirements.
As an efficient single phase oil transformer, it offers dependable power transmission and easy maintenance. The advanced design of this oil immersed transformer ensures high efficiency and consistent performance under different working conditions. A single phase oil immersed transformer is an ideal choice for users seeking safe, durable, and cost-effective transformer solutions.
Product Features
Tier 2 efficiency design + copper wire windings reduce operational losses. Sealed tank ensures 25+ years lifespan.
Equipped with comprehensive protection devices (Buchholz relay, thermometer) and an anti-corrosion tank for harsh environments.
Compact outdoor design with high overload capacity, capable of carrying excess loads for short periods.
Fully sealed structure drastically reduces maintenance frequency. Low failure rate ensures highly controllable operation costs.
Optimized for single-phase distribution. Simple wiring avoids phase imbalance waste and matches single-phase grid demands.
Key Specifications (300kVA Single-Phase)
| Parameter | Typical Value | Description |
| Rated Capacity | 300kVA | Maximum apparent power under long-term safe operation, meeting single-phase load demands. |
| Rated Voltage | 10kV / 0.23kV | Customizable 6kV, 11kV high voltage to adapt to different single-phase grid standards. |
| Vector Group | Ii0 | Standard single-phase connection; simple wiring, perfectly adapted to single-phase systems. |
| Impedance | 4.5%~6.5% | Standard 5%~6% limits short-circuit currents, protecting downstream single-phase equipment. |
| No-Load Loss | ≤ 0.55kW | Complies with Tier 2 standards; low idle energy consumption saves costs. |
| Load Loss (75℃) | ≤ 3.0kW | Copper wire windings ensure high energy conversion efficiency under load. |
| Winding Temp. Rise | ≤ 65K (AN, Class A) | Effectively controls winding heating to avoid insulation aging. |
| Noise Level | ≤ 52~57dB(A) | Low-noise core structure and shock absorption design reduces environmental impact. |
S11 Type 300kVA Single-Phase Parameters & Scenarios
| Parameter | Typical Value | Description |
| Energy Efficiency | GB 20052-2024 Tier 2 (NX2) | Adapts to basic energy-saving compliance requirements. |
| No-Load Loss | Approx. 0.7kW | Slightly higher loss than S13, satisfying basic single-phase distribution energy needs. |
| Load Loss (75℃) | Approx. 3.0kW | Consistent with the S13 model of the same capacity. |
| Partial Discharge | ≤ 10pC | Reliable insulation performance, ensuring basic operational safety. |
| Core Material | Normal High-Grade Silicon Steel | Balances magnetic permeability and cost, meeting conventional working condition requirements. |
| Applicable Scenarios | Budget-limited, normal load ≤ 60% | Ideal for rural single-phase grid upgrades and small commercial distribution. Outstanding cost-effectiveness. |
Standard S13 Series Technical Reference
| Capacity (kVA) | Impedance (%) | No-Load Loss (W) | Load Loss (W) | No-Load Current (%) | Oil Weight (kg) | Total Weight (kg) | Dimensions W×D×H (mm) | Gauge (mm) |
| 30 | 4.0 | 80 | 630 / 600 | 1.2 | 100 | 340 | 790×580×910 | 400 |
| 50 | 4.0 | 100 | 910 / 870 | 1.2 | 115 | 410 | 830×600×970 | 400 |
| 63 | 4.0 | 110 | 1090 / 1040 | 1.0 | 120 | 440 | 850×630×1000 | 400 |
| 80 | 4.0 | 130 | 1310 / 1250 | 1.0 | 135 | 470 | 900×650×1000 | 400 |
| 100 | 4.0 | 150 | 1560 / 1500 | 0.8 | 150 | 500 | 950×700×1000 | 400 |
| 125 | 4.0 | 170 | 1890 / 1800 | 0.8 | 175 | 600 | 1100×800×1000 | 550 |
| 160 | 4.0 | 200 | 2310 / 2200 | 0.7 | 200 | 700 | 1200×900×1050 | 550 |
| 200 | 4.0 | 240 | 2730 / 2600 | 0.7 | 215 | 750 | 1300×1000×1050 | 550 |
| 250 | 4.0 | 290 | 3200 / 3050 | 0.7 | 240 | 900 | 1400×1050×1100 | 550 |
| 315 | 4.0 | 340 | 3830 / 3650 | 0.6 | 275 | 1050 | 1500×1100×1150 | 660 |
| 400 | 4.0 | 410 | 4520 / 4300 | 0.6 | 310 | 1300 | 1550×1150×1150 | 660 |
| 500 | 4.0 | 480 | 5410 / 5150 | 0.6 | 360 | 1500 | 1650×1230×1200 | 660 |
| 630 | 4.5 | 570 | 6200 | 0.6 | 420 | 1700 | 1600×1250×1250 | 820 |
| 800 | 4.5 | 700 | 7500 | 0.5 | 520 | 2100 | 2100×1300×1650 | 820 |
| 1000 | 4.5 | 830 | 10300 | 0.5 | 620 | 2400 | 2150×1350×1700 | 820 |
| 1250 | 4.5 | 970 | 12000 | 0.5 | 680 | 2700 | 2200×1400×1900 | 820 |
| 1600 | 4.5 | 1170 | 14500 | 0.5 | 880 | 3400 | 2300×1450×1900 | 820 |
| 2000 | 5.0 | 1360 | 18300 | 0.4 | 1050 | 4400 | 2100×2200×2100 | 820 |
| 2500 | 5.0 | 1600 | 21200 | 0.4 | 1260 | 5000 | 2150×2300×2200 | 820 |
* The table above shows standard three-phase S13 series parameters, provided as a general manufacturing reference for the S13 technology platform.
FAQ
The single phase oil immersed transformer is widely used in residential power supply, rural power grids and small industrial equipment, delivering stable voltage conversion for low-power electrical systems.
This single phase oil immersed transformer relies on internal insulating oil to transfer heat. The oil circulates naturally to cool down core and windings, ensuring steady operation for long hours.
The single phase oil immersed transformer features simple structure, reliable performance and low operating noise. It also boasts good insulation and long service life for daily power distribution work.
Regularly check the oil level and sealing condition of the single phase oil immersed transformer. Keep its exterior clean and inspect internal parts periodically to avoid potential faults.
Most single phase oil immersed transformers are designed for outdoor use. With sealed structure and oil protection, they can adapt to common outdoor temperature and weather conditions.
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