I. Core Working Principle (LED & PFC Focus)

　　PFC-Enhanced Constant Current Architecture: Integrates an active PFC module (power factor ≥0.95)、AC-DC conversion stage (90-305VAC universal input) and precision constant current output circuit—core to LED lighting stability. The active PFC reduces harmonic distortion (THD <10% @ ≥50% load) , while the constant current module uses feedback control to maintain ±3% current accuracy (critical for LED luminance consistency). Dimming signals (0-10V/PWM/DALI-2) are integrated into the control loop for seamless brightness adjustment without flicker.

　　LED-Specific Adaptation Logic: Optimized for wide voltage output (29-240V DC) to match series-parallel LED arrays (e.g., 5600mA for high-density strips, 1400mA for large panels) . Fanless convection cooling (enabled by 94.5% max efficiency ) avoids noise in commercial spaces, while IP67-rated enclosures (for outdoor models) resist rain/dust—aligning with ceiling, landscape, and stadium lighting scenarios.

　　Surge Resilience for Lighting: Incorporates multi-stage surge protection (6kV line-ground, 4kV line-line ) to withstand lightning-induced transients in outdoor installations, with auto-recovery after faults to minimize downtime.

　　II. Key Features (PFC & LED Optimization)

　　1. PFC Performance & Energy Efficiency

　　Active PFC Advantages:

　　Power Factor (PF): ≥0.95 @ 230VAC, ≥0.92 @ 277VAC (far exceeding passive PFC’s 0.7-0.85) —reduces grid load and meets EN 61000-3-2 Class C standards.

　　Harmonic Control: THD <10% @ 50%-100% load (avoids tripping circuit breakers in large-scale installations like stadiums).

　　Energy Savings: 92.5%-94.5% conversion efficiency + <0.5W standby power—complies with ErP Directive and DOE Level VII requirements.

　　Passive PFC Limitations: Only recommended for small-scale indoor lighting (PF 0.8-0.85, THD >15%)—rejected for commercial/industrial LED systems.

　　2. LED-Dedicated Output Characteristics

　　Constant Current Precision:

　　Current Accuracy: ±3%~±5% (ensures consistent brightness across LED batches; deviation >±5% causes visible luminance differences).

　　Ripple Current: ≤5% @ rated current —prevents flicker (critical for retail/office lighting, avoids eye strain).

　　Voltage Adaptability: 29-240V DC output range

　　Dimming Compatibility:

　　Analog Dimming: 0-10V DC (1%-100% range, common in commercial lighting).

　　Digital Dimming: PWM (1kHz-10kHz, flicker-free) and DALI-2 (addressable, for smart lighting systems ).

　　Dimming Resolution: ≥10-bit (ensures smooth brightness transitions in hospitality settings).

　　3. Environmental Resilience & Safety

　　Installation Protection:

　　IP Ratings: IP20 (indoor ceiling panels), IP67 (outdoor streetlights/floodlights )—IP67 models withstand water immersion (1m/30mins).

　　Temperature Range: -40℃~80℃ case temp (operates in desert heat or cold storage).

　　Surge & Fault Protection:

　　Surge Immunity: 6kV (line-ground), 4kV (line-line) —critical for outdoor lighting exposed to lightning.

　　Fault Handling: Short-circuit (auto-recover), over-temperature (power derating 6%/℃ above 80℃ ), open-circuit protection.

　　Certifications: UL8750 (LED lighting safety), EN61347-2-13 (LED driver standard), GB19510.14 (China mandatory) .

　　4. Long-Term Reliability

　　Component Durability: 105℃ long-life electrolytic capacitors + metal oxide varistors (MOVs) for surge protection—MTBF ≥175,000 hours .

　　Vibration Resistance: 10-500Hz/5G (X/Y/Z axes )—suitable for high-vibration environments (stadium scoreboards, industrial workshops).

　　III. Recommended 300W PFC LED Power Supplies

　　LEDPro 300-PFC-G (General Commercial Grade):

　　Core Highlights: Active PFC (PF≥0.95), 0-10V/PWM dimming, IP20, 94% efficiency, 5-year warranty.

　　Ideal For: Office ceiling panels, retail spotlights (indoor, moderate dimming needs).

　　Key Specs: 191×69mm (D×H), 2.2kg, 90-305VAC input, 29-58V DC output, 5200-8670mA current, -40℃~80℃ temp range .

　　LEDPro 300-PFC-O (Outdoor High-Brightness Grade):

　　Core Highlights: Active PFC (PF≥0.92), IP67 waterproof, 6kV surge protection , fanless, 3-year warranty.

　　Ideal For: Streetlights, stadium floodlights, landscape lighting (outdoor harsh environments).

　　Key Specs: 191×69mm (D×H), 2.5kg, 90-305VAC input, 58-116V DC output, 2600-4330mA current, THD <10% .

　　LEDPro 300-PFC-S (Smart Dimming Grade):

　　Core Highlights: Active PFC (PF≥0.97), DALI-2 digital dimming, RS485 monitoring, 94.5% efficiency , 5-year warranty.

　　Ideal For: Smart buildings, hotel lighting (addressable dimming, energy management).

　　Key Specs: 200×75mm (D×H), 2.3kg, 90-305VAC input, 29-240V DC output, 1300-2170mA current, UL8750 certified.

　　IV. Purchasing & Usage Guidelines

　　1. Selection Criteria (By LED Lighting Scenario)

　　By Installation Environment:

　　Indoor (Offices/Retail): LEDPro 300-PFC-G (IP20, basic dimming).

　　Outdoor (Streetlights/Floodlights): LEDPro 300-PFC-O (IP67, surge protection).

　　Smart Systems: LEDPro 300-PFC-S (DALI-2, remote monitoring).

　　By LED Array Configuration:

　　High-Current Strips (5A+): LEDPro 300-PFC-G (5200-8670mA).

　　High-Voltage Panels (100V+): LEDPro 300-PFC-S (29-240V DC).

　　By Energy Standards:

　　EU/US Markets: All models (ErP/DOE compl...

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