UPS  – Uninteruptible Power Supply

 

 

Purpose of UPS

• It provides power when there is brownout
• Gives the user enough time to properly shutdown their computers or devices
• Protects computers or devices from voltage fluctuations

Two Types of UPS

• Online UPS    –       Power supply comes from the battery even there is supply from the GPO/Outlet, This means no switching when there is power failure.
• Offline UPS   –        Power Supply comes from the GPO/Outlet and switch to battery upon Power failure.

• Rates of UPS

• VA – Volt Ampere    –     UPS rate when no load
• 600VA, 800VA, 1000VA etc
• Wattage  –   UPS rate when there is load
• 300 Watts, 500 Watts, 800 Watts

• Choosing UPS rate of a Device

• UPS should be higher than the device
• Example:
• 90 watts device/laptop
•  UPS should be higher
• 300 watts   –  15 mins 500watts   –  25 mins

 

• The Bigger the UPS the better