Emerson Liebert APS - Unloading the UPS

Product Introduction
Liebert
®
APS
™
8
1.2 Features
Liebert APS UPS
• Flexible extension of capacity, up to 15 or 20kVA modular power, depending upon frame rating
• N + 1 redundancy, improving availability
• Module design, modules hot-swappable by user
• Redundant intelligent module, providing redundant communication path
• Intelligent battery management
• External large batteries can be connected
• Internal automatic and manual bypass
• Transformer-based UPS frames provide output isolation transformer
• Optional 10A battery charger module
• Continuous system monitoring
• User-friendly interface with audible alarms and event logs
• Supporting hot-pluggable and online update
• Compatible with backup generators
Standard Components
•UPS frame
• User interface module: for comprehensive user indications and programmable controls
• System control modules and system monitor module: for system monitoring and communications
• Power modules: for power conditioning
• Battery modules: for backup power
• Charger module: option for charging batteries and long run time applications
• External battery cabinet: prolongs system run time
Communications
• Dry contacts
• Liebert IntelliSlot communication ports
•USB port
1.3 Operating Principle
The operating principle of the Liebert APS UPS is shown in Figure 5.