EMI Test:EMI(Electromagnetic Interference) included conducted interference and radiated interference. The following will focus on the EMI test, electrostatic discharge and surge test.2.1. The table 2 list EMC test items of LED lighting products which inlcuded main test intem, main test equipment, test environmental. Voltage dips short interruptions and voltage variations immunityĠ%UT, Duration of 0.5 cycles, 70%UT, Keep 10 cyclesįorefront of the open circuit voltage wave 0.5μs short circuit current wave frontier≤1μs oscillation frequency 100kHz☑0% Repetition rate 5kHz, Highest test level☑kV Harassment radiation (Magnetic induction current) EMS mean electromagnetic susceptibility( immunity test), test LED lighting product’s immunity ability for electromagnetic disturbances such as lightning, ESD static test and the fight against ringing waves immunity. EMI mean electromagnetic interference, test LED lighting products may cause performance degradation or damage to generate electromagnetic disturbance of other things (including equipment, systems, people and animals and plants). LED lighting product’s EMC test item included EMI and EMS. The point need discuss is general purpose LED lighting products (except automotive lighting, aircraft lighting, photocopiers and other special LED lighting equipment) EMC test standards, as shown in Table 1 below: Such as automotive LED lighting products should refer to CISPR25, ISO7637-2 and ISO11452 etc EMC standards, this article will not discuss them here. EMC Test Standards: There haven’t LED special standards focus on EMC test, the current practice is based on the field of LED lighting products, refer to the implementation of the relevant standards. Electromagnetic compatibility (EMC) is an important factor affecting the reliability of LED lighting products.ġ. According to market quality checking, the failure rate of LED lighting product reach to 39%, most of failure products related with harmonic currents, surge impact, harassment voltage electromagnetic compatibility test items. With the introduction of various national support policies, there appeared many LED lighting products manufacturer, but the quality of LED lighting products is not good well which influence the LED lighting product’s marketing promoting more or less. LEDs and LED luminaires with high light efficiency, longer lifetime, better energy saving and environmental friendly advantages to achieve top position on the lighting industry, like indoor and outdoor lighting application.

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