This modular UPS system is perfect for enterprise data centers, healthcare facilities, and mission-critical infrastructure that need online double conversion power protection. Our Liebert APS AS4 solution delivers:
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N+1 redundancy architecture that ensures continuous operation even during component failures
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Power conditioning technology for clean, stable power delivery to sensitive equipment
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Critical IT systems protection ensuring 99.99% uptime for business-critical operations
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Smart UPS management with advanced monitoring and predictive analytics
Key Features
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Modular UPS design enabling flexible capacity scaling from 10kW to 800kW
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Online double conversion topology providing complete electrical isolation and protection
- Advanced power conditioning eliminating voltage fluctuations and harmonics
- Robust N+1 redundancy configuration for maximum availability
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Critical IT systems compatibility supporting servers, storage, and network equipment
- Hot-swappable modules for zero-downtime maintenance
- Energy-efficient ECO mode reducing operational costs by up to 98% efficiency
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Networkable UPS capabilities with SNMP, Modbus, and web interfaces
Technical Specifications
| Manufacturer |
Vertiv |
| Model Series |
Liebert APS AS4 |
| Type |
Modular UPS System |
| Topology |
Online Double Conversion |
| Power Range |
10kW to 800kW (scalable modules) |
| Input Voltage |
380/400/415V ±10% (3-phase) |
| Output Voltage |
380/400/415V ±1% (3-phase) |
| Frequency |
50/60 Hz ±0.01% |
| Efficiency |
Up to 98% in ECO mode, 96% in double conversion |
| Power Factor |
0.9 output, Unity input |
| Redundancy |
N+1 Configuration with hot-swappable modules |
| Communication |
Smart UPS with SNMP, Modbus, dry contacts |
| Display |
7-inch color touchscreen with intuitive navigation |
| Operating Temperature |
0°C to 40°C (32°F to 104°F) |
| Compatible Systems |
Critical IT systems, data centers, healthcare, industrial facilities |
Frequently Asked Questions
Q: What advantages does online double conversion provide for critical IT systems?
A: Online double conversion topology provides complete electrical isolation, converting incoming AC power to DC, then back to clean AC. This eliminates all power disturbances including voltage sags, surges, frequency variations, and harmonics — essential for critical IT systems protection.
Q: How does N+1 redundancy work in modular UPS systems?
A: N+1 redundancy means you have one additional power module beyond what's required for your load. If any single module fails, the remaining modules automatically handle the full load without interruption. Hot-swappable design allows maintenance without downtime.
Q: Can this modular UPS integrate with existing data center infrastructure?
A: Yes, it's designed for seamless integration with networkable UPS management systems including building management, DCIM platforms, and smart power distribution units. Multiple communication protocols ensure compatibility with existing infrastructure.
Q: What power conditioning features protect sensitive equipment?
A: Advanced power conditioning technology includes voltage regulation (±1%), frequency regulation (±0.01%), harmonic filtering, and surge protection. The system maintains clean, stable power regardless of utility conditions — critical for servers, storage systems, and network equipment.
Modular UPS system with online double conversion for critical IT systems. N+1 redundancy and advanced power conditioning technology.
