go to the UPS product page VINULAL.P.M asked on Nov 30th, 2014 in UPS

Synchronization of UPS

Can we connect the output of UPS system with different power ratings (different kVA) to a single bus and the load will be shared based on their kVA rating?

Carlo Kufahl , Product marketing

ABB's answer

In case of parallel UPS (see description below) it is not possible to have different power ratings in the same system.

Parallel UPS

UPS system are widely used in parallel configurations. The main reasons are:

  • create redundancy
  • scalability: to add power in stages in order to reduce capital expenditures upfront
  • reach large power, greater than 1 Megawatt

UPS systems in parallel, is actually one system made of parallel UPS modules, who has one output.

The UPS modules in the same system are always of the same power rating and from one sole manufacturer.

Each UPS module is supplying equal power to the load (load sharing).

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  • Carlo Kufahl

    Carlo Kufahl

    Product marketing

    Carlo Kufahl is the Product Manager for 3-phase modular UPS at the center of excellence for UPS, Power Protection Product Group of ABB, Quartino, Switzerland. He joined in 2010 and as a Sales Engineer for two years and then he took over as Product Manager. Today he coordinates and manages the complete life cycle of the 3-phase modular UPS which includes pre-development, development, launch, sales and phase out of products. Carlo holds a Bachelor’s degree in Electrical Engineering from the University of Applied Sciences and Arts of Southern Switzerland. Carlo also holds a Master in Business Administration obtained at Zürich University of Applied Sciences.

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