Description

Meanwell HLG-320H Details

The Meanwell HLG-320H stands out in the market for its advanced features and robust design. Beyond its impressive 320W power capacity, this AC/DC LED Driver boasts a dual-mode output, ensuring stable performance through constant voltage (CV) and constant current (CC) regulation. Its wide input voltage range of 90-305VAC makes it adaptable to diverse electrical environments.

One key highlight is its exceptional efficiency of up to 94%, significantly reducing energy consumption and operating costs for LED lighting systems. The absence of a fan, coupled with a sturdy metal housing, ensures reliable operation in extreme temperatures ranging from -40º C to +90º C, making it suitable for both indoor and outdoor applications.

Moreover, the HLG-320H offers versatile functionality options including dimming methodologies, granting designers unparalleled flexibility to customize lighting setups according to specific needs and preferences. Whether for commercial, industrial, or residential purposes, this series excels in delivering high-performance lighting solutions with longevity and adaptability in mind.

One of the standout features of this power supply is the pre-installed Australian Standard wall plug, which makes installation a breeze. This is a great convenience for users who want to avoid the hassle of having to install a separate plug. With this ready-to-use plug, users can have their power supply up and running in no time. This is especially helpful for those who are not familiar with electrical wiring or who simply want to save time on installation. All in all, this feature adds to the overall ease and convenience of using this power supply.

Features

• Output current can be adjusted between 6.67 ~ 13.34A. (Via Potentiometer)
• Output Voltage can be adjusted between  21 ~ 26VDC (Via Potentiometer)
• Inrush Current: 70A (Cold Start at 230VAC)
• Input Voltage: 90 ~ 305VAC / 127 ~ 431VDC
• Input Current: 1.65A at 230VAC
• Australian Standard Input Plug
• RCM Compliant

Specifications:

• Constant voltage (CV) + Constant current (CC) mode output
• Built-in active PFC function
• IP67/IP65 rating for indoor or outdoor installations.
• Typical lifetime: 62,000 Hours
• 7 Year Warranty
• Weight: 1.9kg
• 1800mm Input Cable Length

 

Technical Drawings:

 

How Do the CV (Constant Voltage) and CC (Constant Current) Modes Work?

In a power supply with both Constant Voltage (CV) and Constant Current (CC) modes, the mode selection is determined automatically based on the load conditions. Here’s how the power supply decides whether to operate in CV or CC mode:

Set Parameters:

• Voltage Limit (Vo ADJ): The maximum voltage the power supply will output adjusted by the potentiometer. In this particular model, you can adjust the voltage between 21-26VDC.
• Current Limit (Io ADJ): The maximum current the power supply will output adjusted by the potentiometer. In this particular model, you can adjust the current between 6.67-13.34A.

Operation in Constant Voltage (CV) Mode:

• The power supply operates in CV mode when the load requires a current less than the current limit (Io ADJ).
• In this mode, the power supply maintains the output voltage at Vo ADJ, adjusting the current as needed to match the load’s demand.

Operation in Constant Current (CC) Mode:

• The power supply operates in CC mode when the load demands more current than the set limit (Io ADJ).
• In this mode, the power supply maintains the output current at Io ADJ, allowing the voltage to drop below Vo ADJ to keep the current constant. For this particular Power supply, the output voltage in this mode will auto-adjust to as low as 12VDC if required to maintain a constant current.

Example Scenario:

• Suppose Vo ADJ = 24V and Io ADJ = 10A:
  • Light Load: If the load requires 8A, the power supply operates in CV mode at 24VDC and 8A.
  • Heavy Load: If the load requires 12A, the power supply cannot provide 24V without exceeding the 10A limit. It reduces the voltage below 24V to maintain 12A, transitioning to CC mode.

Key Points: 

• The power supply always operates in the mode that ensures neither the voltage exceeds Vo ADJ nor the current exceeds Io ADJ.
• The transition between modes is seamless and automatic, ensuring the load is protected while delivering the required power within the set limits.

Real-World Examples:

• LED Lighting: LEDs require a constant current to maintain consistent brightness. A power supply in CC mode prevents fluctuations that could affect performance or lifespan.
• Battery Charging: During charging, the power supply initially operates in CC mode to limit the current, then switches to CV mode to prevent overvoltage as the battery approaches full charge.
• Laboratory Testing: When testing electronic components, precise control over voltage and current is crucial. A power supply with CV and CC modes provides this control, ensuring accurate results.