Closed Today 2 March 2018

Snow on Motorway

For Health & Safety reasons we have closed the office today. The snow, ice and wind makes for dangerous travel conditions and so I have asked our staff to remain at home. Please use our contact form or email us at for technical enquiries, and for sales enquiries. If you need to speak […]

UPS Classification to EN62040-3

EN62040-3 UPS Classification Curves

EN62040 is the European Harmonised Standard for Uninterruptible Power Systems (UPS). Part 3 (EN62040-3), published in 2011 is the Method of specifying the performance and test requirements. Here we’re looking at UPS Classification which is at section 5.3.4 entitled “Performance Classification”. UPS Classification If you take a look around our product lines you will see […]

What is a negative 48Vdc system?

SmartSys Telecom Rectifier

In telecommunication systems it is common to have a supply voltage of -48Vdc. What this means is that the positive terminal is grounded. But why 48V and why ground the positive end? Surely it would be more intuitive to ground the negative end? I’ll answer these questions in turn. Why 48Vdc? This is a trade […]

Pharmacy Fridge UPS Applications

Pharmacy Fridge

Why use a UPS on a Pharmacy Fridge? Unlike applications where sudden power loss causes data loss or other operational issues, power loss to a pharmacy fridge is not such of an issue since the internal temperature is well controlled. In the event of a power cut a solution is simply not to open the […]

Our New Website

Our new website

We’ve made some changes to our website. This is to more reflect the type of business that Power Inspired has evolved into, whilst maintaining the link to what got us here in the first place. We were the first company to open an online store exclusively for power protection products. Previously, you would have had […]