Redundant Uninterruptible Power Supply Classification

What is an uninterruptible power supply (UPS)?

Uninterruptible Power Supplies (UPS) are installed for mitigating risks to critical infrastructure and to protect business continuity during a power outage.

What is a critical power system (UPS)?

One of the more popular UPS configurations in critical power system designs adds one more module than required to support the critical load (“N+1” UPS). In an N+1 UPS configuration, as shown below, two or more UPS systems deliver power to the critical parallel bus, which feeds the critical load.

What is redundancy in ups & critical power backup?

Redundancy is a term often used to describe the state of being no longer needed or useful. However, when used in the context of UPS and critical power backup, redundancy refers to the duplication of critical components or systems, with the intention of increasing reliability as a whole to support business continuity.

What is the difference between a 2n and a redundant UPS?

Another common configuration, the “2N+1” UPS design, merges the “2N” and the “N+1” designs so that each side (“A” and “B”) has enough modules to support the load, plus one additional module per side. An isolated redundant configuration involves a UPS feeding the critical load while a redundant UPS provides the bypass power to the primary UPS.