MEAN WELL ERP & ERPF Series Rain-Proof LED Power Supplies
The ERP and ERPF series are enclosed-type, Constant Voltage (CV) LED power supplies specifically designed for the outdoor signage and billboard industry. Unlike standard enclosed power supplies, they feature a unique aluminum enclosure with a built-in rain shield, making them a highly cost-effective solution for semi-outdoor applications.
- Rain-Proof Design: The specially designed aluminum casing features downward-facing louvers and a protective cover over the terminal block, effectively preventing rain splash and water intrusion when installed correctly.
- Constant Voltage Output: Delivers a highly stable, fixed voltage output (typically 12V or 24V), perfect for driving long runs of LED strips and LED modules.
- Fanless Operation: Engineered for cooling by free air convection. The absence of a cooling fan eliminates the risk of fan failure due to dust or moisture, drastically improving long-term reliability.
- High Value: Offers commercial signage manufacturers a rugged, weather-resistant power solution at a fraction of the cost of fully potted (IP67) metal drivers.
Technical Highlights
- Input Voltage Variations: The standard ERP series is optimized for high-line AC input (180~264VAC), while the ERPF series supports universal input (90~264VAC).
- Active PFC (ERPF Only): The ERPF series includes built-in Active Power Factor Correction (PF > 0.90) to meet strict regional harmonic current regulations and improve overall grid efficiency.
- Robust Protections: Both series are fully equipped with automatic recovery protections against short circuit, overload, over-voltage, and over-temperature.
- Conformal Coating: The internal PCB is often conformal coated to provide an extra layer of defense against high humidity and condensation typical in outdoor signage enclosures.
Series Comparison: ERP vs. ERPF
Choose between the ERP and ERPF series based on your regional power grid requirements and wattage needs:
| Feature | ERP Series | ERPF Series |
|---|---|---|
| Available Wattages | 200W, 350W | 400W |
| Input Voltage | 180 ~ 264VAC (High-line only) | 90 ~ 264VAC (Universal) |
| PFC Function | No | Yes (Active PFC built-in) |
| Standard Outputs | 12V, 24V | 12V, 24V, 48V |
Selection Tip: If you are installing signs in North America or regions utilizing 110V/120V grids, you must select the ERPF-400. The standard ERP-200 and ERP-350 are designed exclusively for 220V-240V power grids.
Application & Installation Guide
The ERP and ERPF series are the industry standard for commercial advertising illumination. Due to their specific mechanical design, installation orientation is critical.
| Ideal Applications | Installation Guidelines |
|---|---|
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Environmental Warning: While the ERP/ERPF series is "rain-proof," it is not fully waterproof (not IP67). It should never be submerged in water or placed in areas where water can pool around the base.
