China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

Generally,the street lamp light source of high pressure mercury lamp, high pressure sodium lamp. restart time is generally 3 ~ 15min,In lighting long ignition process due to mutations in the grid voltage, lamp aging and maintenance quality and other reasons, will appear the blinking phenomenon. The cause can be divided into two categories: periodic and non periodic.

a) after long-term use of lighting, working voltage will rise gradually, when the upper voltage exceeds the allowable value of, such as when the high sodium lamp operating voltage reached about 145V, at a supply voltage of normal no fluctuation fashion can keep the lights on. If the power supply voltage fluctuations slightly lower, the light bulb will soon go out. When the supply voltage is restored to normal and lighting is cooled to a certain degree, the tube metal vapor pressure drop, after the condensation of the metal gas, will be renewed moving lights, resulting in a non periodic blinking.

b) is about to end of life (EOL) lamp aging, self triggering lighting after the voltage rise gradually to 170V, although no normal power supply voltage fluctuations, lighting will soon went out of itself. The light bulb cooling to a certain extent again light, and gradually increase the working voltage , repeat the above process. Lighting from the trigger lights to self extinguishing, cooling to trigger, each cycle time is basically the same, until the lighting will end of life. So go round and begin again extinction and reignition that bulb will die. At the same time also caused periodic blinking bulb.

c) when the repair quality is not high, the line in the individual virtual connection phenomenon, when the virtual real time, caused by blinking bulb. The abnormal phenomenon of the light source of the street lamp can destroy the luminance uniformity of road illumination, which brings great inconvenience to pedestrians and vehicles. Solve abnormal source: using a special transformer, to ensure the voltage quality, observe the inspection, found to be timely replacement of end of life (EOL) lighting; to strengthen the quality of maintenance, installation is firm and reliable put an end to the phenomenon of virtual connection.