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Mean Well

HLG-185H-24A Mean Well, AC/DC, 24V / 7.8A / 185W

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Review, teardown, and testing of HLG-185H-24A Mean Well power supply

January 30, 2025
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LED power supplies

The HLG-185H-24A Mean Well power supply delivers a stable 24V DC output up to 7.8A, accepting AC input from 90-305V and DC input from 127-431V. It features adjustable voltage and current, high efficiency (~93.5%), active PFC (power factor 0.98), and protections against thermal issues, overload, and overvoltage. Testing showed excellent voltage stability (<0.34% variation), low ripple, good dynamic response, effective overload protection, and safe thermal performance at full load. It's robust, efficient, and suitable for various applications beyond LED lighting.

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HLG-185H-24A is a 185W AC/DC LED driver featuring the dual mode constant voltage and constant current output.

Features

  • Constant Voltage + Constant Current mode output
  • Metal housing
  • IP67 / IP65 for indoor or outdoor installations
  • Operating temperature from -40F to 194F
  • Function options: output adjustable via potentiometer; 3 in 1 dimming
  • Typical lifetime > 62000 hours
  • 7 years warranty

Applications

  • LED street lighting
  • LED high-bay lighting
  • Parking space lighting
  • LED fishing lamp
  • LED greenhouse lighting

Specification

Output:

  • DC voltage: 24V
  • Rated current: 7.8A
  • Rated power: 187.2W
  • Ripple & noise: 150mVp-p
  • Voltage adj. range: 22 ~ 27V
  • Current adj. range: 3.9 ~ 7.8V
  • Voltage tolerance: 士1.0%
  • Line regulation: 士0.5%
  • Load regulation: 士0.5%
  • Setup, rise time: 1000ms, 200ms/115VAC
  • Hold up time (Typ.): 16ms/115VAC

Input:

  • Voltage range: 90 ~ 305VAC and 127 ~ 431VDC
  • Frequency range: 47 ~ 63Hz
  • Efficiency (typ.): 93.5%
  • AC current (typ.): 2.1A/115VAC

Protection:

  • Over current: 95 ~ 108%
  • Short circuit
  • Over voltage: 28 ~ 34V (shut down o/p voltage, re-power on to recover)
  • Over temperature: shut down o/p voltage, recovers automatically after temperature goes down

Environment:

  • Working temperature: -40F ~ +194F
  • Working humidity: 20 ~ 95% RH non-condensing

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Full datasheet: https://www.meanwell.com/Upload/PDF/HLG-185H/HLG-185H-SPEC.PDF