YB-12/0.4-□ Type Outdoor Pre-installed substation (American)
YB-12/0.4 pre-installed substation is a domestically developed American-style pad-mounted substation. As an important power supply unit in cable distribution networks, the product is a complete set of pre-assembled equipment integrating high-voltage control, protection, power transformation, and power distribution. It is widely used in urban and rural distribution networks for power receiving and distribution.
The American-type substation features a compact layout, fully sealed transformer compartment, and oil-immersed self-cooling transformer with high overload capacity. It is designed for outdoor installation with a corrosion-resistant steel or stainless steel enclosure, suitable for long-term operation under harsh environmental conditions. The substation is fully assembled and tested at the factory before delivery, significantly reducing on-site civil engineering work and commissioning time.
Technical Specifications
| Item | Specification |
|---|---|
| Model | ZBW-12/0.4 (American Type) |
| Rated Voltage (HV Side) | 12kV |
| Rated Voltage (LV Side) | 400V / 415V |
| Rated Frequency | 50Hz / 60Hz |
| Rated Capacity | 50kVA – 1600kVA (customizable) |
| HV Protection | Load break switch + fuse combination (up to 630A) |
| LV Main Breaker | Moulded case circuit breaker (MCCB) — up to 2500A |
| Transformer Type | Oil-immersed, self-cooling (ONAN), energy-efficient (S11/S13/S20 series) |
| No-Load Loss (S13) | ≤ 75% of GB/T 6451 standard value |
| Load Loss (S13) | ≤ 85% of GB/T 6451 standard value |
| Enclosure Material | Corrosion-resistant steel plate with anti-UV coating |
| Degree of Protection | IP33 / IP44 |
| Standards | IEC 62271-202, GB/T 17467 |
AMBIENT CONDITION
Altitude not exceeding 2500m.
Ambient temperature: -35°C to +40°C.
Relative humidity: Daily average not exceeding 95%, monthly average not exceeding 90%.
nstallation location: No fire hazard, explosion hazard, corrosive gases, and well-ventilated places; ground inclination angle not
exceeding 3°.
Key Features
- American-Type Design: Compact pad-mounted structure with fully sealed transformer compartment, suitable for outdoor curb-side or green space installation without fencing
- High Overload Capacity: Oil-immersed self-cooling transformer with superior overload capability, meeting peak load demands in summer and holiday periods
- Energy Efficient: Equipped with S13 series low-loss transformers — no-load loss reduced by up to 25% and load loss reduced by up to 15% compared to S11 series, significantly lowering total cost of ownership
- Fully Enclosed Protection: All live parts are fully enclosed with IP33/IP44 protection, ensuring safe operation in public areas and eliminating risk of accidental contact
- Easy Installation: Factory-assembled and tested, requiring only foundation preparation and cable connection on site
- Corrosion-Resistant Enclosure: Heavy-duty steel plate with anti-corrosion and anti-UV coating, designed for 20+ years of outdoor service life
APPLICATIONS
Widely used in urban power grid transformation, residential communities, and various public places, as well as in indoor and outdoor locations such as factories, hotels, airports, railways, ports, and highways.
ORDERING INFORMATION WHEN PLACING AN ORDER,THE FOLLOWING INFORMATION MUST BE SPECIFIED
1. Main circuit scheme number, purpose, single-line system diagram, arrangement diagram, and layout diagram of the distribution room.
2. Auxiliary circuit wiring diagram, terminal arrangement diagram.
3. Models, specifications, and quantities of electrical components in the switchgear.
4. Requirements for control, measurement, and protection functions of switchgear, as well as other requirements forinterlocking
and automatic devices.
5. If bus bridge connections are required between switchgear or incoming cabinets, provide specific requirements such as the rated
current, span, height above ground, etc., for the bus bridge.
6. Specify the types and quantities of accessories and spare parts required.
7. If switchgear is used in special environmental conditions, detailed explanations should be provided when ordering.