Kiểm tra tuổi thọ đèn LED:
Đối tượng thử nghiệm: đèn LED (đèn có trình điều khiển LED, thành phẩm).
Phương pháp thử:
1) Đặt 5 đèn LED ở nhiệt độ môi trường 25oC, and test the initial lumen, power consume, color temperature and other parameters in rated input voltage;
2) After the testing, put the samples in a temperature of 25℃, and light up at the rated power input;
3) In the first three months, test the luminous, power, color temperature every 10 days in the same environment, and compare with the initial parameters recorded.
4) After three months testing, test the parameters every one month, record the data and compare with the initial value;
Yêu cầu kiểm tra:
MỘT: When the luminous flux attenuates to 70% of initial value, then the time is the life span of the DẪN ĐẾN lighting. The LED light life can be calculated by the average of lifetime of the samples, through the light decay testing record.
B: If LED lamp is power off during testing, then this called the absolute life time.