Yongce Group Co., Ltd.
YBW - 12 Prefabricated Substation Complete Product Introduction
1. Product Brief Introduction
The YBW - 12 prefabricated substation (commonly known as box-type substation) is an outdoor prefabricated complete set of electrical equipment that tightly combines high-voltage switchgear, power transformers, and low-voltage electrical equipment. Designed and manufactured in accordance with the "box-type substation" concept, it is transported as a whole after factory pre-commissioning, enabling ring network, terminal, and dual-power supply modes to complete the acceptance, transformation, and distribution of electrical energy. Widely used in the construction and renovation of urban and rural power grids, it is an efficient solution to replace traditional civil-built substations. It complies with GB/T 17467 and IEC 61330 standards.
2. Scope of Application
It is suitable for outdoor power distribution scenarios with AC 50Hz, high voltage rated at 12kV, and low voltage rated at 0.4kV. Typical applications include:
- Power distribution and energy distribution in urban residential districts, high-rise buildings, and commercial centers.
- Power supply for industrial parks, small and medium-sized factories, mines and oilfields.
- Temporary or fixed power supply for wind-solar power stations and temporary construction sites.
- Terminal power supply, ring network power supply or dual-power supply switching scenarios in urban and rural power grid transformation.
- Places sensitive to land occupation and construction cycle, where no separate power distribution room needs to be built.
3. Model Definition (According to GB/T 17467)
The coding of YBW - 12/0.4 - □ contains core structural characteristics and parameter information of the prefabricated substation. The specific meaning of each part of the model is as follows:
| Code | Meaning | Description |
|---|---|---|
| Y | Prefabricated | Fixed identifier, representing prefabricated structure |
| B | Substation | Fixed identifier |
| W | Outdoor type | For outdoor use (indoor type is marked as "N") |
| 12 | High voltage rated voltage | 12kV (adapted to 10kV system) |
| 0.4 | Low voltage rated voltage | 0.4kV (400V) |
| □ | Rated capacity | Transformer capacity, commonly 100kVA - 2500kVA |
Extended identifiers: F (anti-corrosion type), Z (intelligent monitoring type), S (hermetically sealed structure), e.g., YBWZ - 12 represents 12kV intelligent outdoor prefabricated substation.
4. Operating Conditions
- Altitude: ≤2000m (derating required for ultra-high altitude).
- Ambient temperature: -25℃ - +45℃, maximum daily temperature difference 25K.
- Humidity: ≤90% monthly average at 25℃, ≤95% daily average, no condensation.
- Pollution grade: Grade IV, suitable for outdoor multi-dust and slightly corrosive environments.
- Seismic intensity: Grade 8, installation inclination ≤3 degrees.
- Wind speed: ≤35m/s, solar radiation intensity ≤0.1W/cm² (wind speed 0.5m/s).
- Location: Outdoor, no conductive dust, corrosive or flammable and explosive medium.
5. Main Technical Parameters (Typical Configuration)
| Parameter Category | Parameter Value | Remarks |
|---|---|---|
| Rated Voltage | High voltage 12kV, Low voltage 0.4kV | Adapted to 10kV distribution network system |
| Rated Frequency | 50Hz | Standard power grid frequency |
| Rated Capacity | 100kVA - 2500kVA | Oil-immersed (S13 - M) or dry-type (SCB14, etc.) |
| High Voltage Switch | Load switch + fuse combination / SF6 ring main unit | Equipped with anti-misoperation interlock |
| Transformer | Oil-immersed (ONAN self-cooled) or dry-type (Class H insulation) | Oil transformer top oil temperature rise ≤55K; dry-type noise ≤55dB (1m) |
| Low Voltage Outgoing Lines | 4 - 8 circuits (customizable) | Functions of power, lighting, reactive power compensation, metering, etc. |
| Protection Grade | Shell IP23/IP34 | IP34 is more suitable for dusty and rainy environments |
| Shell Material | Aluminum-zinc coated steel plate / Stainless steel | With anti-corrosion, waterproof and dustproof capabilities |
| Overload Capacity | 100 - 630kVA: 1.5 times rated current; 800 - 1600kVA: 1.3 times rated current | Oil transformer ≤75℃, dry-type transformer ≤80℃ |
6. Performance Characteristics
- Integrated and easy installation: Factory pre-commissioned, only needs positioning, wiring and testing on site, greatly shortening the construction period.
- Compact structure, small land occupation: Occupies only 1/10 - 1/5 of the land area of traditional substations with the same capacity, saving land resources.
- Reliable operation and simple maintenance: High/low voltage sides are equipped with anti-misoperation interlocks, transformers can be optionally equipped with maintenance-free type, each compartment has temperature control ventilation and automatic lighting for easy inspection.
- Excellent protection and strong adaptability: Outdoor anti-corrosion and heat insulation, IP34 protection can cope with outdoor wind, rain, dust, adapting to various climates.
- Flexible power supply and good scalability: Supports ring network, terminal, dual-power supply modes, low-voltage circuits can be customized according to requirements to adapt to different loads.
- Optional intelligence, high operation efficiency: Optional "four remote" (remote metering, remote communication, remote regulation, remote control) functions to realize fault location, load transfer and remote management.
