Question
Download Solution PDFWhich of the following devices requires a battery?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFUninterrupted Power Supply (UPS)
- An uninterruptible power supply or uninterruptible power source (UPS) is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails.
- A UPS is typically used to protect hardware such as computers, data centers, telecommunication equipment, or other electrical equipment where an unexpected power disruption could cause injuries, fatalities, serious business disruption, or data loss.
- The UPS always works along with a battery.
- This battery backup provides enough time for either the connected equipment to safely shut down with the minimal risk of damage or data loss or for an alternative power source such as a backup generator to kick in and take over the powering the load.
Additional Information A static transfer switch makes an online UPS different from offline UPS.
The block diagrams of both the UPS are shown in the figure.
- Offline UPS requires battery
- Static transfer switches (STS) are such electrical devices which are used for very fast switching between electrical power sources.
- It is used in UPS to immediately switch main power supply, to its stored backup power.
- They perform instantaneous switching operations and thus supply immediate power to the load.
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