![]() Standby UPSs are best-suited for small, non-critical electronic devices and home/personal office use. Most of these units only run for 5-20 minutes to give you enough time to properly shut off your computer so you’d need to upgrade to a UPS with a larger capacity if this won’t meet your needs. ![]() Square/pseudo sine waves can cause overheating, malfunctioning or even equipment failure in some electronics. Generally, offline UPSs provide a square/pseudo sine wave output waveform, which can be problematic in combination with sensitive electronic equipment. They are called “offline” or “standby UPS” since the inverter is switched off by default. In the event of the main power supply dipping above or below the normal limits, the load is transferred to the inverter output, typically within 5-8 milliseconds. For that you would need at least a line-interactive UPS. However, they aren’t capable of regulating power dips and transient voltage. Standby UPSs defend against blackouts as well as both voltage surges and spikes. Voltage Sag. A type of brownout that is shorter in duration.Īlso known as an offline UPS or VFD (Voltage and Frequency-Dependent) UPS, is the most common type of UPS system, offering basic power protection and backup battery capabilities.Even small surges from faulty contactors can cause permanent damage over time. Lightning strikes can bring about huge power surges that damage or destroy devices instantly. Also called “transient voltage”, this is a brief, unexpected increase in voltage outside normal limits for wall outlets (typically 0 and 169 volts, or greater than 110% of normal output). It could last a few minutes or even several days. ![]() Basically a mini power surge, also known as a swell, this is higher-than-normal voltage lasting longer than a surge. It can hinder the performance of electronic circuits.
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