（1）Product Overview
S11-M Custom Power Transformer is a core energy-saving equipment for medium and low voltage power distribution. It adopts hermetic corrugated oil tank and high magnetic conductivity cold-rolled silicon steel sheet core, with low loss and stable operation. The standard rated capacity range is 30kVA-2500kVA, supporting multi-parameter customization, maintenance-free with long service life, and widely suitable for various power distribution scenarios with excellent cost performance.
（2）Model Definition (Model Composition Diagram)
S11-M Custom Power Transformer Model Explanation (Parameter identification of customized models can be adjusted on demand):
Plain Text
S 11 - M
│ │ │ │
│ │ │ └── Structure Type: M=Hermetic (Corrugated Oil Tank)
│ │ └── Separator
│ └── Performance Level Code: Grade 11 (Low Loss Energy-Saving Type)
└── Phase Number: S=Three-Phase (Oil-Immersed Power Transformer, customizable for multiple capacities/voltages) |
（3）Product Features
• Flexible Customization: Capacity (covering 30kVA (minimum) - 2500kVA (maximum) standard range, expandable beyond standard capacity), voltage tapping, protection level, overall dimension and other parameters can be customized on demand to accurately match the needs of different power distribution scenarios.
• Low Loss & Energy Saving: Adopting high magnetic conductivity cold-rolled silicon steel sheet core, the no-load loss is 30% lower than that of traditional series, which can greatly save electricity costs during long-term operation.
• Hermetic & Maintenance-Free: Corrugated oil tank design, canceling conservator, automatically compensating oil volume change, isolating air and moisture, preventing moisture and deterioration, no regular maintenance required, service life up to 25-30 years.
• Safe & Reliable: Compact core structure, tight pressing, strong short-circuit resistance, excellent insulation performance, suitable for various harsh environments, stable operation without leakage.
• Widely Applicable: Mature technology and high-quality core components, suitable for various medium and low voltage power distribution scenarios, balancing practicability and cost performance, complying with national energy efficiency standards.
（4）Application Environmental Conditions
Environmental Parameters | Allowable Range (Customizable for extreme environments) |
Ambient Temperature | -25℃～+45℃ |
Altitude | ≤1000m, derating adaptation can be customized for exceeding altitude |
Relative Humidity | ≤90% (at 25℃ ambient temperature) |
Pollution Class | Class Ⅱ (Upgradable to Class Ⅲ on demand) |
Installation Site | Indoor and outdoor, no severe vibration, no corrosive gas, no flammable and explosive medium |
（5）Application Scenarios
Rural power grid renovation, small industrial and mining enterprises, commercial buildings, residential communities, outdoor distribution stations, photovoltaic power station matching, remote distribution points and other medium and low voltage power distribution fields.
（6）Main Technical Parameters Table (Core Models of the Same Series)
Capacity (kVA) | No-Load Loss (W) | Load Loss (W) | No-Load Current (%) | Impedance Voltage (%) | Total Weight (kg) |
30 (Minimum, Standard) | 100 | 630 | 2.2 | 4.0 | 320 |
50 | 130 | 910 | 2.0 | 4.0 | 405 |
63 | 150 | 1090 | 1.8 | 4.0 | 480 |
80 | 180 | 1310 | 1.8 | 4.0 | 550 |
100 | 200 | 1580 | 1.7 | 4.0 | 620 |
125 | 240 | 1890 | 1.6 | 4.0 | 700 |
160 | 280 | 2310 | 1.5 | 4.0 | 820 |
200 | 340 | 2730 | 1.4 | 4.0 | 980 |
250 | 400 | 3200 | 1.3 | 4.0 | 1150 |
315 | 480 | 3830 | 1.2 | 4.0 | 1400 |
400 | 570 | 4520 | 1.1 | 4.0 | 1680 |
500 | 680 | 5400 | 1.0 | 4.0 | 2000 |
630 | 810 | 6500 | 1.0 | 4.5 | 2450 |
800 | 980 | 7800 | 0.9 | 4.5 | 2900 |
1000 | 1150 | 9200 | 0.9 | 4.5 | 3500 |
1250 | 1360 | 11000 | 0.8 | 4.5 | 4200 |
1600 | 1640 | 13500 | 0.8 | 4.5 | 5000 |
2000 | 1950 | 16200 | 0.7 | 4.5 | 5800 |
2500 (Maximum, Standard) | 2340 | 19800 | 0.7 | 4.5 | 6800 |
（7）Referenced Standards
• GB 1094.1-2013 "Power Transformers - Part 1: General"
• GB 1094.2-2013 "Power Transformers - Part 2: Temperature Rise"
• GB 1094.3-2015 "Power Transformers - Part 3: Insulation Levels, Insulation Tests and External Clearances"
• GB 1094.5-2018 "Power Transformers - Part 5: Ability to Withstand Short-Circuit"
• GB 20052-2020 "Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Power Transformers"
• GB/T 6451-2015 "Technical Parameters and Requirements for Oil-Immersed Power Transformers"
• ISO 9001:2015 Quality Management System Standard
• IEC 60076-1～7 International Electrotechnical Commission Standards for Power Transformers
