Voltage transformation type high-voltage sodium lamp power saver

Abstract

A high-voltage sodium lamp is the most commonly used electric light source. The invention discloses a voltage-reducing and power-saving method for the high-voltage sodium lamp, and a voltage transformation type power saver. tests are carried out according to appendix F of GB / T13259-2005, after the high-voltage sodium lamp is lighted on normally, when the voltage is dropped to 190V suddenly, the high-voltage sodium lamp does not light out; the high-voltage sodium lamp can implement voltage-reducing power supply tests; voltage-reducing experimental data from a certain manufacturing plant is as follows: when the power supply voltage is reduced from 220V to 200V, the lamp current is reduced by 6.3% and power is saved by 16.1%; the illuminance, the luminous flux and lighting effect are all lowered; however, the illumination quality (uniformity) late at night is not affected; the voltage transformation type high-voltage sodium lamp power saver mainly comprises a main circuit, a control circuit and a photoelectric controller; the power saver is tested by Hunan Province Measurement and Detection Institute; the test certification number is EQ no. 2009-0756; and the detection conclusion shows that the power of a 70W high-voltage sodium lamp can be saved by 16% under 200V power supply compared with that of the 70W high-voltage sodium lamp under 220V power supply.

Description

technical field [0001] The invention relates to a power-saving method and a power-saving device for a high-pressure sodium lamp. Background technique [0002] According to the requirements of road lighting at night in the city, at night, the high-pressure sodium lamp is connected to the rated voltage of 220V to work, and the photoelectric indicators such as illuminance and brightness of the high-pressure sodium lamp meet the lighting design value to meet the needs of motor vehicles and pedestrians. After 11 o'clock in the evening, appropriately reducing the brightness (illumination) of the electric light source will not affect the function of road lighting. At this time, the controller can be used to automatically reduce the power supply voltage of the high-pressure sodium lamp, which not only meets the lighting needs of the road in the middle of the night, but also saves electricity. . [0003] Recently, the high-voltage sodium lamp step-down power savers adopted at home a...

AI Technical Summary

Problems solved by technology

However, the electromagnetic high-pressure sodium lamp power saver needs to add bulky and expensive autotransformers or compensating transformers or reactors, and the control technology is complicated, which affects its wide-scale promotion and use.

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