YBW -40.5/0.315～0.69(PV) Photovoltaic Prefabricated Substation
YBW-40.5/0.315~0.69(PV) Photovoltaic Prefabricated Substation (Container-type) is widely used in a series of new energy power generation systems, including centralized, string, distributed, and other forms. It serves as the key power collection and grid-connection unit in photovoltaic power plants, integrating high-voltage switchgear, step-up transformers, and low-voltage distribution equipment into a standardized container-type enclosure.
Designed specifically for the renewable energy sector, the YBW series meets the demanding requirements of large-scale solar farms, including outdoor installation in remote areas, wide temperature operation, and compatibility with inverter output voltages (315V–690V). The substation steps up the inverter output voltage to 40.5kV for direct connection to the medium voltage collection network, significantly reducing power transmission losses compared to lower voltage collection schemes.
Technical Specifications
| Item | Specification |
|---|---|
| Model | YBW-40.5/0.315~0.69(PV) |
| Rated Voltage (HV Side) | 40.5kV |
| Rated Voltage (LV Side) | 315V / 400V / 480V / 690V AC |
| Rated Capacity | 1000kVA – 5000kVA (customizable per project) |
| Rated Frequency | 50Hz / 60Hz |
| Transformer Type | Oil-immersed, self-cooling (ONAN), low-loss amorphous alloy or S20 series |
| No-Load Loss | ≥ 30% lower than conventional S11 series (amorphous alloy core) |
| HV Protection | SF6 load break switch + fuse / Vacuum circuit breaker (up to 1250A) |
| LV Incoming | Main MCCB or ACB compatible with inverter output specifications |
| Enclosure Type | Container-type, double-layer molybdenum-zinc honeycomb panel |
| Enclosure Material Options | Stainless steel / Molybdenum alloy / Cold-rolled plate / Color steel plate |
| Degree of Protection | IP44 / IP54 |
| Standards | IEC 62271-202, GB/T 17467 |
AMBIENT CONDITION
Altitude not exceeding 1000m
Ambient temperature: -25°C to +40°C;
Relative humidity: Daily average not exceeding 95%,monthly average not exceeding 90%
Installation location: No fire, explosion hazards,conductive dust, chemically corrosive gases, and severe vibrations. If conditions exceed the above, users can consult with our company.
FUNCTIONS AND FEATURES
- Integrated Design: High-voltage switchgear, transformer, and low-voltage switchgear are integrated into one unit, providing strong completeness with a short production cycle
- Comprehensive Protection: Full high and low-voltage protective relaying ensures safe and reliable operation with simple maintenance
- Space-Efficient: Occupies less space than traditional substations, cost-effective, easy to relocate, and flexible wiring schemes
- Unique Honeycomb Structure: The proprietary double-layer (molybdenum-zinc plate) honeycomb shell provides robust mechanical strength, thermal insulation, natural heat dissipation, and ventilation, achieving high aesthetics and protection performance
- Multiple Material Options: Stainless steel, molybdenum alloy, cold-rolled plate, and color steel plate available to suit different environmental and budget requirements
- Multiple Style Options: Universal type, villa type, compact type, and various other styles available
- Intelligent Monitoring: Integrated measuring and control device with reliable detection of short-circuit and single-phase grounding faults. Equipped with “four-remote” functions (remote measurement, remote signaling, remote control, remote regulation), facilitating distribution network automation upgrades and unmanned operation
- Anti-Condensation Design: Built-in heaters and ventilation system prevent internal condensation in high-humidity environments, ensuring reliable operation of electrical components
Applications
- Large-scale centralized photovoltaic power plants (utility-scale solar farms)
- String and distributed PV generation systems
- Wind-solar hybrid renewable energy projects
- Industrial park and commercial rooftop solar installations
- Energy storage system (ESS) power collection and grid connection
- Remote area microgrid and distributed energy resource (DER) systems