HLG-240H-30

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As lighting technology wave after wave of continuous improvement, LED is gradually become the main lighting source. The main application of LED, energy saving has advantages in energy, environmental protection and other aspects, has been widely used in commercial and residential areas of general lighting, landscape lighting and so on. In order to ensure that LED\'s operation and make its full performance, LED drivers (power supply) need to be used for long life of the LED lamp.

As a basic component of LED lamps and LED lighting system, LED drivers are divided into two categories: constant current and constant voltage. Generally speaking, in the case of different configuration, the voltage of LED lamp is fixed, and the current that needs to be adjusted is the driving power of LED, which is mainly used to adjust the brightness of LED driver. Here we mainly introduce the application field and working principle of HLG-240H-30 LED driver.

HLG-240H-30 is a constant current LED driver developed by Mean Well Company. Its rated output voltage is 48-460V and rated output current is 30A. It can work under wide voltage, wide temperature range and wide applications. The HLG-240H-30 is suitable for LED lighting systems such as street lamps, floodlights, solar street lamps, office lamps, traffic signals, etc. It meets UL and CE certification requirements, and its maximum output power is 72000W.

In terms of working principle, HLG-240H-30 adopts the principle of PFC built-in combined with constant current output. The circuit is composed of two parts, with power factor correction and constant current output, so that the LED driver can complete the double conversion of AC to steady DC. The boost part is the power factor correction PFC circuit, its purpose is to make the current waveform of the power factor close to sine wave to avoid harmonics pollution. The output part of the circuit is the controller and output filter inductor driven by the built-in controller. The output current of the constant current driver is mainly determined by the closed loop voltage control system. The output current of the constant current driver can be adjusted by adjusting the feedback voltage through the adjustable resistor (rset) in the feedback loop. Because the voltage drop caused by the lamp varies with lamp load, feedback voltage can be used to adjust the output current of LED driver according to the output voltage level of LED lamp.

Advantage of HLG-240H-30 LED driver is that it has high flexibility and is convenient to use. It can support a wide range of input voltages within its operating range. In addition, the feedback voltage is adjustable from 0V to 4.5V, which is suitable for all kinds of LED lighting system or other output current requirement changes. In addition, the driver has the advantages of high efficiency, fast transient response, low working temperature and environmental protection. In summary, HLG-240H-30 LED driver has wide application range, high efficiency and environmental protection, so as to be more suitable for LED lamps and other conductive load.

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