Overview: 

 The specification defines a 77W switch mode AC / DCLED constant current drive power input, output characteristics and performance requirements 

 Electrical Specifications 

 Frequency voltage frequency range voltage range 
 170-240VAC 160-264VAC 50-60Hz 47Hz to 63Hz 

 Input current 

 From zero load to full load, when operating in 170-240VAC, AC input current shall not exceed 0.7A 

 Inrush current 

 Work at 240VAC, the inrush current is limited to 50A. Inrush current measurement is the ambient temperature is 25 ℃, tested unit to power off until the temperature stability of the measured ambient temperature 

 Input protection 

 The input side of a 2A fuse should be installed to provide protection against power 

 Output performance 

 In any line and load changes and various environmental conditions, the output should be consistent with the range of data shown in Table 1. 

 Nominal input voltage 170-240VAC 
 Maximum output power (W) 77 
 Output Number 2 
 70 * 1W LED Quantity 
 PER / Each output current (A) 0.35 ± 5% 
 Power factor ≥ 0.95 
 Minimum load (A) 0.0 
 Maximum output voltage 140VDC ± 5% 

 LED connection 



 Output cable polarity 

 Color output polarity 
 Red * 2 LED1 +, LED2 + 
 Black * 2 LED1-, LED2- 

 Dimming performance 

 The power supply with 9 LED dimming and inspection functions. 

 Over Power Protection 

 The power supply should be able to burst over the output power (greater than 100W), the damage will not be protected, the lifting of automatic recovery when the fault. 

 Capacitive load start 

 In 100VAC/60HZ input and output full load (0.35A * 2outputs) and a 2200uF electrolytic capacitor, the peak power should be no output at 100VAC/60Hz input, load and on the electrolytic capacitors 4700UF CR mode (400Ω-0.35A * 2outputs) case, the peak power output of not more than 5 times, and one of 2 to 5 times less than the normal peak output voltage of 20%. 

 Efficiency 

 The input voltage 220VAC/50Hz, measured under maximum load, the power should be able to provide a minimum 80% efficiency. 

 Environmental requirements 

 Operating temperature and humidity range: storage or transport temperature should be -20 to 70 ℃, relative humidity of 20% to 90% range, the LED drive power should be in the altitude range from 0 to 10,000 feet, operate and stored at 40 , 000 feet below. 

 Safety standards 

 In addition to the special specified, the power supply designed to meet EN61347 and / or equivalent security to information technology equipment