GE FGC TLE Series Manual page 6

Redundant Parallel Architecture (RPA) System Configurations
GE provides RPA, a unique technology that can parallel UPS modules with true redundancy by eliminating any single point
of failure. RPA provides a scalable paralleling technique that reduces operating footprint and increases system reliability
by eliminating the need for external paralleling equipment and cabinets (centralized bypass and master control).
One of the UPS modules in the system intelligently takes the leadership role, while the other UPS modules have
access to all control parameters. If one UPS fails to operate, the load is automatically redistributed among the
others. If the lead UPS fails to operate, then another UPS automatically takes on the leadership role. GE's RPA
technology is implemented by distributing the control electronics within each UPS module in the system.
RPA System Advantages
No Single Points of Failure
The RPA system provides complete redundancy of
all critical components, allows paralleling of up to 6
units for increased load capacity or redundancy.
Scalable
The system can be easily expanded for higher capacity
and redundancy without any interruption to the critical
load or transfer to bypass.
Distributed Control Logic
Each module in an RPA system has its own operational
controller. Each one continuously communicates with all
others in order to manage the entire system like a team.
Redundant Communication
Redundant high speed bus and control electronics
provide higher system reliability.
RPA Configuration
Configurable up to 6 units
in parallel
• Future expansion
• Safe and reliable power supply
• Redundant Communication Bus
• Easy to install and maintain
• Easy system upgrade/downgrade
• Maintenance operation
without load interruption
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Online Maintenance
N+1 configurations allow maintenance on any single
module in the system while other modules provide
online protection with battery backup.
Sequential Soft Start
Provides sequential soft start of each module to reduce
instantaneous load on input feeders during mains recovery.
This helps avoid over-rating of generator and overheating
of cable and fuses.
Smaller Footprint
RPA eliminates the centralized control and external static
bypass cabinet.
Standard RPA™ Configuration:
True Redundancy with Distributed Control & Bypass
LP33 Series II UPS | www.gecriticalpower.com