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Can you connect two UPS in series?

Can two UPS be connected in series

We had one of those unusual applications through last week. A customer had a load of 1000W that he needed to run for an hour. Simples – using our UPS calculator we can get one of our rack/tower VFI3000B units with 2 battery packs and problem solved. Or not. Problem is there is a maximum […]

Residual Current Devices (RCD) and Isolated UPS Systems

Consumer Unit

BS7671:2018 18th Edition Wiring Regulations now makes mandatory RCD protection on circuits up to 32A. Isolation transformers will negate the effectiveness of RCD protection. Is this a problem? Tony Bell explains.

Regen Battery -To Pack Or Not To Pack

AG1500S ReGen Battery

Do you need a ReGen Battery for your AG1500S? This article explains what differences the battery pack will give to your power solution.

BS8418:2015 UPS System Selector

BS8418 UPS Applications

Many moons ago we blogged about BS8418:2010 (Installation and remote monitoring of detector-activated CCTV systems, Code of Practice) and the requirements for UPS Systems. That standard stated: Unless the mains power supply is supplemented with a stand-by generator, an uninterruptible power supply (UPS) must be able to power the CCTV control equipment and communications devices […]

Quality control of the electricity supply

Sine Wave Scope Trace

This is a guest post by Werner Karau of Antares Power,  Power Inspired Distributor in Germany. In this edition we consider the quality control of electricity supply. May we invite you to a small thought experiment? How do you answer this question: “Would you drive your car without fuel filter?” “No, of course not“, you […]

Natural Disaster Survival Kit

natural disaster survival kit

Severe weather conditions and natural disasters are more of a threat in certain geographical areas than others. You need to be prepared if you live in a high risk area. It is recommended that you have an Emergency Supply Kit ready for when severe weather strikes. A separate kit for home, work and for your […]

Top 5 interesting facts about UPS

Facts about Uninterruptible Power Supply

You probably know how Uninterruptible Power Supplies work and what their purpose is, but we have the top 5 interesting facts about UPSs that you probably didn’t know! 1. INVENTOR – UNKNOWN The history of Uninterruptible Power Supplies is somewhat a mystery – nobody can name one person or one date when UPSs systems were […]

UPS ECO mode – what’s so good about it?

UPS eco mode

All of our online double conversion UPS systems feature a setting option to run the UPS in an ECO mode. What does this mean? And is it beneficial for you? We will try to answer those questions for you. An ECO mode in UPS systems essentially means that the UPS’s inverter is in a standby […]

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 […]

AC ReGenerator Input Vs Output

What a great question received into technical support today: Can you show the difference between the input and output voltage waveforms on the AC ReGenerator? We have a bit of bespoke in-house test equipment that we use for looking at the quality of the mains supply. It allows us to view both normal and common […]