Ø  Universal AC input (90~264Vac) Ø  Built-in active PFC function, PF>0.96 Ø  Using ZVS technology to reduce power dissipation Ø  Output protection: OVP/OLP/SCP/OPP/OTP Ø  Built in Fan speed control Ø  Built in AC inrush current limiting circuit(<20A) Ø  Build in constant current limiting circuit Ø  Built in Remote Sense Function Ø  Build in DC-OK / remote sense signal Ø  Wide operating ambient temperature (-30℃~70℃) Ø  PCB with conformal coating Ø  1 U low profile,41mm      Ø  3 years warranty  MODEL PDF-800-24 PDF-800-36 PDF-800-48 OUTPUT DC Output 24V 36V 48V Rated Current 33A 22A 16.5A Ripple and Noise Note 2 ≤200mV ≤200mV ≤200mV Voltage ADJ.  Range 21.6~26.4V 32.4~39.6V 43.2~52.8V Voltage Accuracy ±2% Line Regulation ±0.5% Load Regulation ±2% Set-up Time ≤3S (220Vac input, Full load) Hold up Time ≥8mS (220Vac input, Full load) Temperature Coefficient ±0.03%/℃ Overshoot and Undershoot <5.0% INPUT Voltage Range   90Vac~264Vac Frequency Range 47Hz--63Hz Power Factor(Typical) PF≥0.96/230VAC     PF≥0.98/115VAC     Full Load Efficiency ( Typical) ≥89% ≥89% ≥89% AC Current (max.) ≤12 A Inrush Current (Typical) ≤20A @220Vac       Cold start Leakage Current Input—output: ≤0.25mA     Input—PG: ≤3.5mA INPUT PROTECTION Low-voltage protection point 75~85Vac, shut down. Low-voltage recovery point 80~90Vac, Auto recovery Over-voltage protection point 280~295Vac, shut down. Over voltage recovery point 275~285Vac, Auto recovery OUTPUT PROTECTION Over Current 36.3~44.55A 24.2~29.7A 18.15~22.3A Protection type: Constant current, auto recovery Over power 871.2~1069.2W 871.2~1069.2W 871.2~1069.2W Protection type: Constant current, auto recovery Over Voltage 27.6~36V 41~45V 55.2~60V Protection type: Constant voltage, auto recovery Over Temperature 105℃+5℃(detect on Mosfet temperature);shut down, auto recovery after the temperature goes down to 75℃ Short Circuit Long-term mode, constant current, auto recovery ENVIRONMENT Operating amb. Temp. & Hum. -30℃~70℃;  20%~90%RH  No condensing  (refer to derating curve) Storage Temp. & Hum. -40℃~85℃;  10%~95%RH  No condensing SAFETY &EMC    (Note 3) Safety Standards UL60950-1; EN62368-1 Withstand Voltage Primary-Secondary: 3.0KVac/10mA .Primary-PG:1.5KVac/10mA. Secondary-PG: 0.5KVac/10mA. Isolation Resistance 10M ohms EMI Conduction & Radiation Compliance to EN55032  Class B Harmonic Current Compliance to EN61000-3-2,Class D EMS Immunity Compliance to EN61000-4-2,3,4,5,6,8,11; OTHERS MTBF (MIL-HDBK-217F) More than 200,000Hrs (25℃, Full load) Dimension  (L*W*H) 226×116.5×41mm Packing 12PCS/CTN, 16.8KGS, 0.04CBM Cooling method Forced air cooling (Built-in fan, the fan speed is controlled by load and internal temp.) DC OK 4-6V (when output voltage is normal) NOTE 1.      All parameters NOT specially mentioned are measured at rated input, rated load and 25℃ of ambient temperature. 2.      Measured at 20MHz of bandwidth by using a 12” twisted pair-wire terminated with a 0.1 uF & 47uF parallel capacitor. 3. The power supply is considered as a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies” on http://www.powerld.com.cn. Powerld switching power supply, we focus on high quality!