Better Together but not as one

Buying into the latest technological craze doesn’t always mean being ahead of the game: sometimes it simply means paying more than is necessary for a concept that is unproven.  In this article, Kenny Berrie, technical manager at Dieslec Thistle Generators will outline why improvements in generator technology make it both unnecessary and uneconomical to opt for a combined UPS/back-up generator system rather than standalone UPS and generator units.

The purpose of a back-up generator is to provide a dependable contingency if the UPS should fail, however, the number of electronic and digital devices used by contemporary businesses and organisations have affected what is needed to provide that reliable back up.  One answer has been to combine UPS and back-up generator in a single unit but the complex control systems required to achieve this make such solutions extremely expensive and if they develop a fault and the generator goes down with the UPS, what happens to services?

While these combined systems may be cutting edge, therefore, Kenny reports that many organisations are now choosing to revert back to individual UPS and back-up generator systems.





In this article he outlines the advances in generator technology that can make this approach both the most reliable and the most cost-effective including:

  • Improvements in power generation and filters to ensure EU emissions targets compliance
  • Advanced alternator technology to deal with return current issues caused by increased use of electronic devices
  • Improved synchronisation of control systems to provide seamless transfer of power between the UPS and the generator


Finally, Kenny discusses the factors involved in specifying and commissioning a back-up generator that is interfaced with the UPS to provide a reliable, cost-effective system without co-dependency issues.