N+1 Parallel UPS Power Data Center

A parallel-capacity uninterruptible power supply system is comprised of multiple UPS working in parallel but without redundancy. However, the primary advantage of a parallel-redundant system over a parallel-capacity system, particularly for mission-critical applications, is during maintenance and/or repair. A parallel-redundant solution allows maintenance work to be carried out without disruption to the load whereas in a parallel-capacity configuration the entire UPS system must be bypassed to allow individual modules to be worked on.

During normal operation, each of the uninterruptible power supply modules in both a parallel-redundant and a parallel-capacity system will share the load equally. This is also true when operating in battery mode. Each module has its own battery set rather than a shared common battery and each, therefore, should have the same runtime duration and dc cut off voltage threshold.

Should any of the UPS modules detect an internal fault they will automatically disconnect from the common output ac bus bar and the remaining UPS modules will share the load equally without disruption in supply.

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N+1 Parallel UPS Battery Systems

Our N+1 Parallel UPS are truly unique as the total power load is on both UPS units at all times. There is no switch between the two UPS units and the batteries can handle the load independently from each other at all times.

Why Parallel UPS?

Traditional dual UPS units have a switching mechanism between them and although this is an adequate system, the load is on one UPS at a time. When the load is suddenly placed on the second UPS this can be a "shock" to the batteries and failure may occur. Our system carries the load on both at all times.

Parallel Redundant UPS

Parallel-redundant UPS is the most commonly utilized parallel configuration and is usually used to protect mission-critical applications within data centers, industrial sites and large service operators that require the highest levels of resilience and availability.