What are the facts we need to focus before purchasing an LED lighting product. In this blog you can read some of the most important lighting facts customers need to know before taking a decision to choose a product.
Do you know that High Bright LEDs offer different lument output for same power? Yes LEDs are available in the market that offer 30-160 Lm/W(Lumen /Watt). Lm/W is commonly reffered to the term Luminous eefficacy.This means that for the same power two LEDs having different efficacies can offer different lumen output.
Customers may not be aware of this fact. Normally LED lighting products in the market are compared on the basis of output power of the product by customers. This may mislead them to choose a product with lowest price comapred to high priced products so that the products choosen may not be delivering sufficient amount of light customer need since the price of the LED lighting products generally depends on light out put of the product.
So it is a good thing to compare price/lumen than price/watt when we decide to purchse a LED lighting product. It is more surprising to know that choosing a product with lowest luminous efficacy wont help you to save electricity considerably like you think, since you need to install more light engines having lowest efficacy compared to a high efficacy product, which in turn will increase your initial investment and power cost. It is a best option to choose a product offering lower price/lumen and higher efficacy.
Key words: Lumen(Lm): Unit to measure light
LED driver efficiency
When calculating luminous efficacy we should consider luminous efficacy also, since the total power consumed by the LED driver considerable vary with the efficiency of LED driver. For example consider a LED driver is having a power output of 8W and with efficiency 90% , total power consumption of the product will be 8+10%=8.8W. Customer should consider this point while choosing a LED lighting product since the drivers are available with efficiency from 7 to 98%, choosing a driver with lower efficiency will lead to higher power charges compared to a driver with high efficiency.
Power factor generally denoted by PF, gives an idea about how effectively a driver utilises the electricity given to its input. PF has an effect on the countrys electric grid. It is a number given between 0 and 1 and it is best to choose a HPF product always. Quality LED drivers are available with a powr factor greater than 0.9.