PV Anti-reverse Current Control Cabinet Anti-islanding Protection
Product Describe:
1. Distributed PV systems (residential/commercial rooftops)
Core needs: Prevent excess PV power from flowing back to the grid (anti-reverse current) and, in case of sudden grid outages, stop the PV system from continuously supplying power to the local grid (anti-islanding) to ensure the safety of maintenance personnel.
2. Microgrids and off-grid systems
Core needs: In off-grid or weak grid environments, prevent PV and energy storage systems from forming "islanded operation" due to grid fluctuations, ensure stable power supply for local loads, and avoid over-discharging of energy storage batteries or waste of PV power (preventing reverse current to energy storage systems).
3. Grid-connected PV + energy storage projects (industrial/commercial/public buildings)
Core needs: When PV generation exceeds load demand, control surplus power to be prioritized for storage in batteries (instead of flowing back to the grid) to reduce impact on the grid; in case of grid failure, quickly disconnect from the grid (anti-islanding) and switch to energy storage power supply mode.
4. PV carports and BIPV (building-integrated photovoltaics)
Core needs: PV systems in these scenarios are often integrated with building loads, requiring anti-reverse current functions to restrict reverse power transmission to the grid and, during grid failures, prevent PV modules from forming islanded power supply to local circuits within the building.
Specification:
Application Scenario |
Typical Dimensions (W×H×D mm) |
Capacity Range |
Small Commercial Rooftop |
600×800×300 |
≤250kW |
Standard Ground Power Plant |
800×1200×400 |
250kW-1MW |
1500V High-Voltage System |
1000×1500×500 |
1MW-2MW |
Custom Provide:
① Total DC input capacity
② Number of protection devices
③ Ambient temperature range
④ Cable entry requirements
Material:
Stainless steel, carbon steel
IP Rating:
IP54/IP55/IP65/IP66/IP67
Suggestion:
1. Key Customization Points
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Capacity:
-
Climate Adaptations:
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Desert: Anti-sand mesh (+100mm height).
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Coastal: Stainless steel enclosure (+5% size).
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Arctic: Double insulation (+150mm depth).
2. Smart Features (Optional)
3. Cost-Saving Tips
✔ Use standard cable entry points (reduces custom machining).
✔ Opt for modular designs (easy future upgrades).
4. Critical Reminders
⚠ Max shipping width: 2500mm (oversized requires split design).
⚠ Wall-mounted limit: ≤80kg (else use floor-standing).