Category: Article
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Lead Acid Battery Life
Valve Regulated Lead Acid Battery Design Life. Battery Life or “design life” of a battery is based on average use at room temperature (20-25°C) operation. For a modest UPS System, the design life is typically 5 years. Since, UPS applications are standby applications, the batteries are float charged, and the life is also referred to…
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Residual Current Devices (RCD) and Isolated UPS Systems
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.
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BS8418:2015 UPS System Selector
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…
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Transfer times in UPS – what are they and how will they affect my equipment?
“What is transfer time in UPS?” The definition of transfer time, sometimes also called switchover time, says it is the amount of time a UPS will take to switch from utility to battery supply during a mains failure, or from battery to mains when normal power is restored. What this means is that when the…
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Power Problems and How To Solve Them
Power Problems Electricity is mainly generated by turning a large magnet through coils of wire. This induces a clean sinusoidal waveform that can be transmitted down cables, stepped up and down using transformers, to eventually find it’s way into our homes, offices and factories. Along the way, however, some power viruses can interfere with this…
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Isolation Transformer. What you need to know
With the upcoming launch of the Power Inspired TX Series. We look at the isolation transformer, when we may need to use it and how we should use this properly.