High reliability
Especially like the emergency drive power supply for LED street lights, it is installed at high altitude, which is inconvenient to maintain and costly to repair.
High efficiency
LED is an energy-saving product, the efficiency of the emergency drive power supply should be high. For power supply installed in the lamps and lanterns junction heat dissipation is very important. High efficiency of the power supply, its power consumption is small, the heat generated in the lamps and lanterns is small, also reduces the temperature rise of the lamps and lanterns. Beneficial to slow down the light decay of LED.
High power
Power factor is the grid requirements for the load. General 70 watts or less of appliances, there is no mandatory indicators. Although the power of a small single appliance power factor is a little lower on the grid, but the use of lighting at night, the same kind of load is too concentrated, will produce more serious pollution of the grid. For 30 watts ~ 40 watts of LED emergency drive power, it is said that in the near future, perhaps there will be certain indicators of power factor requirements.
Drive mode
(1) a constant-voltage source for multiple constant-current sources, each constant-current source separately to each road LED power supply. This way, the combination of flexible, one LED failure, does not affect the work of other LEDs, but the cost will be slightly higher.
(2) direct constant-current power supply drive method, LED series or parallel operation. It has the advantage of a little lower cost, but poor flexibility, but also to solve a LED failure, does not affect the operation of other LEDs.
These two forms, over a period of time and co-exist. Multiple constant-current output power supply method, in terms of cost and performance will be better. Perhaps the mainstream direction in the future.
Surge protection
LED anti-surge ability is relatively poor, especially the ability to resist reverse voltage. Strengthen this aspect of protection is also very important. Some LED lights are installed in the outdoors, such as LED street lights. Due to the induction of the grid load start dumping and lightning strikes, from the grid system will invade a variety of surges, some surges will lead to damage to the LED.
Protection function
Power supply in addition to the conventional protection functions, it is best to add LED temperature negative feedback in the constant current output to prevent LED temperature too high; to meet the requirements of safety regulations and electromagnetic compatibility.
Effort is a LED emergency driver power supplier, welcome to call +86-0574-27693030, email Sales@effortled.com or visit https://www.effortempro.com/ for wholesale order.
