The main advantages of using a modular UPS system is the ability to increase UPS power as and when required. The UPS power modules are hot swappable and can be added at any future time. Modular systems will normally accept one or more additional power modules to achieve their rated capacity, making them inherently “N+1″ providing redundancy.
Other advantages of modular UPS systems include efficiency and repair time. A UPS system operates at highest efficiency when it is near its maximum rated capacity. Repair can be achieved by replacing an entire power module rather than fault finding down to component level. A customer could keep a spare power module on site enabling site engineers to correct a faulty unit.