Today, electricity has become a necessity. Most of our daily work requires electricity. In order to run daily equipment smoothly and ensure uninterrupted operation even after a power outage, electric power systems were invented. UPS and inverters are the examples. Although both ultimately guarantee uninterrupted power supply, there is still confusion about the difference between a UPS and an inverter.
Next, we'll talk about the differences between the two devices so you can use them better once you know what they do.
What is A UPS?
UPS (Uninterruptible Power System/Uninterruptible Power Supply), that is, uninterruptible power supply, is a system equipment that connects batteries (mostly lead-acid maintenance-free batteries) with the host, and converts DC power into mains power through modular circuits. As a host inverter, it is mainly used to provide stable and uninterrupted power supply for a single computer, computer network system or other power electronic equipment such as solenoid valves and pressure transmitters.
What is An Inverter?
The power inverter is a convenient power converter that can convert DC12V direct current into AC220V alternating current, which is the same as the mains power supply of general electrical appliances. An inverter, as its name implies, must be an inverter device. It is directly different from the transformer, that is, it can realize DC input and then output AC. The working principle is the same as that of the switching power supply, but the oscillation frequency is within a certain range. For example, if the frequency is 50HZ, the output is AC 50HZ. An inverter is a device that can change its frequency.
The biggest difference between the two is that the UPS needs to be equipped with a battery pack, and the backup time is shorter, while the inverter power supply does not need to be equipped with a battery, and can directly use the voltage DC screen of the communication room at all levels, which has a large capacity and can ensure the uninterrupted operation of the network for a long time.
The inverter power supply is converted from DC (direct current) to AC (alternating current), and the UPS power supply has three modes: bypass mode, mains mode and battery mode.
Generally speaking, an inverter is just a simple converter, no impurities are overcharged. A device that converts direct current to alternating current is called an inverter.
The bypass mode of the UPS power supply is to use the mains directly without going through the UPS power supply host. The mains power supply method is that the mains passes through the rectifier of the machine to filter out impurities in the mains, and then passes through the inverter that comes with the host. The output powers the device, while in battery mode, direct current (battery power) is output to the device through an inverter. In this way, the device is well protected.
Inverter power supply and UPS power supply system are roughly the same in function and principle, and both can achieve the following two functions: provide a way to adjust voltage changes, eliminate various electrical interference, and provide high-quality power; when the AC mains fails , the necessary backup power capacity can be guaranteed. The biggest difference between the two is that the UPS needs to be equipped with a battery pack, and the backup time is short, while the inverter power supply does not need to be equipped with a battery, and can directly use the voltage levels of various DC screen communication rooms.
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