ABB Cyberex® RPP with ABB ProLine panelboards

Flexibility – reliability – safety

The Cyberex® RPP with ABB ProLine panelboard provides a flexible, reliable, and safe

solution for electrical distribution on the data center floor. The RPP’s integral

panelboard features touch safe, plug-in branch circuit breakers, designed for the

most mission critical applications.

The ABB circuit breakers are current limiting

branch breakers and provide the highest level of

protection for sensitive downstream IT loads and

the mitigation of arc flash hazard for workers.

Along with providing superior short circuit current

protection, these current limiting breakers are

easily coordinated with upstream ABB circuit

breakers, helping to eliminate the risk of cascading

faults and unnecessary outages to critical loads.

Flexibility and future proofing are also inherent

benefits of the RPP. The panel’s touch safe plug in

breakers allow for quick changes or replacement

with minimal impact to the rest of the system. The

RPP allows system owners to design in provisions

to replace branch breakers and increase protection

as their power demands increase on the rack.

Proper foresight may allow system designers and

data center owners to build in electrical

infrastructure to support IT refreshes without the

need for extended downtime.

Cyberex® RPP features

•   UL listed current limiting branch circuit breakers

•   IP20 touch safe

•   Voltage ratings: 208/120V, 415/240V, 480/277V

•   Current ratings: 225A, 400A

•   1 to 100A branch breakers at 208V

•   1 to 25A branch breakers at 480V

•   Interrupting ratings: 35kA at 208V, 14kA at 480V

•   Main/branch breaker coordination up to 28.6kA at 208V, 14kA at 480V

•   Insulating resin encased bus

•   Pluggable breaker with non-energized bolt on screw

Current limitation

ABB's utilization of current limiting circuit breakers

brings a whole new level of protection and peace of

mind to the distribution of electrical power on the

data center floor. Two of the most notable benefits

of current limitation are increased protection for

downstream system components and the

mitigation of arc flash hazard for workers. Both

mechanical and thermal forces are drastically

reduced through current limitation, which in a data

center, means less potential damage or strain on

the sensitive and expensive IT equipment. This

heightened protection helps remove worries of

extended downtime due to repairs or replacing of

damaged equipment. Current limitation is also the

driving factor to reducing the energy released

during an arc flash event.

Selective coordination

Selective coordination defines a system’s ability to

isolate a fault and increase system reliability. If a

fault was to occur in a selectively coordinated

system (Figure A) the overcurrent protective device

closest to the fault will clear the fault and leave the

rest of the system undisturbed. If the system was

not selectively coordinated, (Figure B) like the

majority of standard RPPs, the breaker closest to

the fault may or may not clear the fault before

upstream breakers start to open causing

unnecessary loss of power to critical loads.

Safety

Working on live electrical equipment is never

recommended, however sometimes becomes a

‘necessary’ task due to the criticality of system

loads in a data center. Cyberex RPPs significantly

enhance worker safety due to its touch safe

panelboard chassis and plug in current limiting

branch breakers. Along with drastically reducing the

shock hazard, the use of current limiting breakers

significantly reduces the arc flash potential to which

a worker could be exposed. Both benefits help users

comply with NPFA 70E guidelines and OSHA standards.