（1）Product Overview
S13-M is a new generation energy-saving fully sealed oil-immersed distribution transformer, with lower loss than S11 series. Adopting vacuum oil filling and fully sealed structure, it isolates moisture, maintenance-free, low noise and strong impact resistance, customizable, widely used in various medium and low voltage power distribution projects.
（2）Model Definition (Model Composition Diagram)
Model Definition :
S 13 - M
│ │ │ │
│ │ │ └── Structure Type: M=Fully Sealed Type (Corrugated Oil Tank, No Oil Conservator, Maintenance-free)
│ │ └── Separator
│ └── Performance Level Code: Level 13 (Ultra-low Loss Energy-saving Type, Complying with National First-class Energy Efficiency Standard)
└── Phase: S=Three-phase (Oil-immersed Power Transformer, Customizable for Multiple Capacities/Voltages)
（3）Product Features
1. Ultra-low Loss & Energy Saving: Adopting high-grade cold-rolled oriented silicon steel sheet, no-load and load loss are much lower than traditional series, saving electricity costs for long-term operation.
2. Fully Sealed & Maintenance-free: Corrugated oil tank isolates air and moisture, no breather, no oil conservator, no daily inspection required, reducing operation and maintenance costs.
3. Low Noise Operation: Optimized iron core lamination and body shock absorption structure, low noise, suitable for noise-sensitive scenarios such as residential areas and commercial complexes.
4. Safety & Short-circuit Resistance: Compact winding and high-strength pressing, reliable insulation, no leakage, strong short-circuit and impact resistance.
5. Customizable Adaptation: Capacity, voltage, overall dimension and other parameters can be customized on demand to accurately match the needs of different power distribution scenarios.
（4）Application Environmental Conditions
Environmental Parameter | Allowable Condition |
Ambient Temperature | -25℃ ～ +45℃ |
Altitude | ≤1000m, customizable for high altitude |
Relative Humidity | ≤90% (25℃) |
Pollution Grade | Class Ⅱ, upgradable to Class Ⅲ anti-corrosion |
Installation Place | Indoor/outdoor available, no strong corrosion, no severe vibration, no flammable and explosive gas |
（5）Application Scenarios
Urban and rural power grid renovation, residential communities, commercial complexes, industrial and mining enterprises, PV and wind power supporting, industrial parks, overseas power distribution projects and other medium and low voltage power distribution fields.
（6）Main Technical Parameters (Core Parameters Table of the Same Series)
Capacity(kVA) | No-Load Loss(W) | Load Loss(W) | No-Load Current(%) | Impedance Voltage(%) |
30 | 70 | 600 | 1.8 | 4.0 |
50 | 90 | 870 | 1.7 | 4.0 |
100 | 130 | 1450 | 1.5 | 4.0 |
200 | 210 | 2500 | 1.2 | 4.0 |
315 | 290 | 3650 | 1.1 | 4.0 |
500 | 400 | 5150 | 0.9 | 4.0 |
630 | 480 | 6200 | 0.8 | 4.5 |
800 | 560 | 7500 | 0.8 | 4.5 |
1000 | 650 | 9000 | 0.7 | 4.5 |
1600 | 950 | 12800 | 0.6 | 4.5 |
2500 | 1350 | 18500 | 0.5 | 4.5 |
（7）Referenced Standards
1. GB 1094.1~5 Power Transformer Series Standards
2. GB/T 6451-2015 Technical Parameters and Requirements for Oil-Immersed Power Transformers
3. GB 20052-2020 Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Power Transformers
4. IEC 60076 International Electrotechnical Commission Transformer Standards
5. ISO 9001 Quality Management System Certification Standard
