Blog
How does an uninterruptible power supply work?
11 Jan 2023

What your computer expects to get from the power grid is 120/127/208/220/230/240-volt AC power oscillating at 50/60 Hertz. A computer can tolerate slight differences from this specification, but a significant deviation will cause the computer's power supply to fail.

An uninterruptible power supply generally protects a computer

against four different power problems:

1- Voltage surges and spikes - Times when the voltage on the line is greater than it should be

2- Voltage sags - Times when the voltage on the line is less than it should be

3- Total power failure - Times when a line goes down or a fuse blows somewhere on the grid or in the building

4- Frequency differences - Times when the power is oscillating at something other than 50/60 Hertz

There are two common systems in use today: standby UPS and continuous UPS. A standby UPS runs the computer off of the normal utility power until it detects a problem. At that point, it very quickly (in five milliseconds or less) turns on a power inverter and runs the computer off of the uninterruptible power supply UPS's battery. A power inverter simply turns the DC power delivered by the battery into 120/127/208/220/230/240-volt, 50/60-Hertz AC power.

Continuous UPS

In a continuous UPS, the computer is always running off of battery power and the battery is continuously being recharged. You could fairly easily build a continuous UPS yourself with a largish battery charger, a battery and a power inverter. The battery charger continuously produces DC power, which the inverter continuously turns back into 120/127/208/220/230/240-volt AC power. If the power fails, the battery provides power to the inverter. There is no switch-over time in a continuous UPS. This setup provides a very stable source of power.


Standby UPS:

Standby UPS systems are far more common for home or small-business use because they tend to cost about half as much as a continuous system. Continuous systems provide extremely clean, stable power, so they tend to be used in server rooms and mission critical applications.


If you have any requirements or any kind of query regarding the modular UPS solutions for your applications, feel free to communicate with our dedicated team at any time at marketing@everexceed.com.

Are you looking for more information about EverExceed's  professional products and solutions?  Our expert team is always here to help. Please fill in the form and our sales representative will contact you shortly. EverExceed | Empower, Energize, Exceed the Energy you Expect forever.
copyright © 2024 EverExceed Industrial Co., Ltd.all rights reserved.
leave a message
welcome to everexceed
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

home

products

about

contact