Vivotek HLG-120H-54 54VDC 120W Power Supply

Vivotek HLG-120H-54 54VDC 120W Power Supply

The Vivotek HLG-120H-54 is a professional-grade DC power supply engineered for demanding IP surveillance and security system deployments. Delivering stable 54VDC output at 120W capacity, this unit handles global power variability with its broad 90-305VAC input range. The IP67 rating ensures complete dust and water protection, while its -40°C to +70°C operating range guarantees performance in extreme climates—from arctic installations to desert heat.

Key Features

• 54VDC / 120W output with 2.3A rated current
• Wide input voltage range: 90-305VAC (47-63Hz)
• IP67-rated enclosure for outdoor and harsh environments
• Operating temperature: -40°C to +70°C
• High efficiency: 93.5% typical conversion rate
• Multiple protection mechanisms: overcurrent, overvoltage, short-circuit, and thermal
• Automatic fault recovery with constant current limiting
• Excellent power factor: >0.93 at full load across input voltages

Technical Highlights

The HLG-120H-54 incorporates advanced regulation with ±0.5% line and load regulation, maintaining ±1.0% voltage tolerance throughout operation. Ripple and noise is tightly controlled at 200mVp-p maximum, critical for sensitive camera electronics. The unit achieves 192.2K hours MTBF (MIL-HDBK-217F at 25°C), reflecting enterprise-grade reliability expectations.

Safety certifications include UL8750, CSA C22.2 No. 250.0-08, TUV EN61347-1, and EN61347-2-13, with high isolation resistance (100MΩ at 500VDC). EMC compliance spans EN55015, EN55022 Class B, and EN61000 immunity standards, ensuring minimal interference in mixed RF environments common to security installations.

The power supply handles rapid power transitions efficiently: setup time of 500ms at 230VAC with 50ms rise time, and 12ms hold-up time at full load ensures connected devices remain powered through brief mains interruptions. Voltage adjustment range of 49-58V and current range of 1.1-2.3A enable field customization for specific equipment requirements.

Applications

• IP surveillance camera systems (Vivotek and compatible brands)
• Outdoor security installations in extreme temperature zones
• Industrial control and monitoring equipment
• Remote site deployments requiring global power grid compatibility
• Mission-critical facilities demanding 24/7 reliability

Ted Perry

The HLG-120H-54 stands out for its combination of rugged environmental sealing and sophisticated electrical protection. The IP67 rating eliminates weather-related installation constraints, while the -40°C to +70°C range addresses climate extremes most generic supplies cannot handle. Power factor >0.95 at 230VAC input reduces facility electrical strain and potential breaker conflicts—the unit permits 5-9 supplies per 16A circuit depending on breaker type.

For integrators, the constant current limiting and automatic recovery from faults means unattended sites can self-heal from momentary shorts or overloads. The 12ms hold-up time, though modest, protects against UPS-free environments with brief mains sags. Voltage and current adjustability post-installation is valuable for retrofit deployments or mixed-device power distribution.