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+44 (0) 1732 770677

London :

+44 020 4524 4276

Types of UPS systems

When choosing a UPS (Uninterruptible Power Supply), be aware that there are several varieties, each functioning best within a certain power range.

Powersaver UK sentinel Dual Low UPS


  • Standby/Off-line UPS operate as standalone units that activate in the event of power failure from the primary source. Practical power range of 0-0.5 kVA. This type of UPS typically remains in standby mode until a power disruption occurs, at which point it switches to battery power to provide an uninterrupted power supply to connected devices. Standby/off-line UPS systems are generally less expensive than other types of UPS systems, but may have a longer transfer time between the loss of utility power and the switch to battery power.
  • Line Interactive/On-line UPS operates with the primary source flowing through and charging the battery, which enables smoother transitions in the event of power failure. Practical power range of 0.5-5 kVA. This type of UPS typically uses an Automatic Voltage Regulator (AVR) to correct minor fluctuations in voltage and switches to battery power in the event of a complete power loss or outage. The battery is continuously recharged when utility power is available.
  • Double Conversion On-Line UPS is similar to standby UPS except that rather than AC mains being the primary source of power, it’s the inverter. Practical power range of 5-5000 kVA. This type of UPS uses a double conversion process to continuously convert incoming AC power to DC power, and then back to AC power again. This process ensures a clean, stable and consistent power supply to connected devices, regardless of the quality of the incoming power source. In the event of a power outage, the UPS seamlessly switches to battery power without any interruption, providing an uninterrupted power supply.

Our Vision

At Power Saver Limited, we envision a world where every industry has access to clean and reliable power at all times. Based in Tonbridge Kent, we are on a mission to provide top-notch power protection solutions to customers in all areas of industry, including medical, financial, pharmaceutical, telecommunication, and aviation industries nationwide.

As one of the UK’s leading independent suppliers of Uninterruptible Power(UPS) and Generator Supplies, we take pride in our ability to provide quality power protection systems that cater to the unique needs of each industry. Our Tonbridge premises have been a hub of successful power solutions for several years, and we are dedicated to continuing this trend.

With our 24-hour emergency cover, you can rest assured that we have got you covered in case of unforeseen power disruptions. Join us in our vision of a world powered by clean and reliable energy.

Get in touch if you need help or unsure what type of UPS you need.
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