Low voltage:

Voltage (V) is the measure of the potential difference between two points in an electrical field. Low enough voltage to be considered safe for indoor domestic use and typically 120 volts or less.

Low voltage UPS:

Uninterruptible power supplies having low voltage are called low voltage UPS. EverExcced offers high efficiency and high quality independent online low voltage UPS which designed in the form of modular UPS, rack UPS and tower UPS. Both single phase and three phase UPS are also available for those countries which use low voltage as well.

In most countries the mains supply is between 220 and 240 volts (50 or 60 Hz); countries that operate on 100-127 volts are greatly outnumbered. There are approximately 40 countries that use 60 Hz while the rest typically run on 50 Hz current. Single-phase power is primarily for residential use (such as homeowners and what you would find in a hotel) while 3-phase electric power provides more stable, heavy-duty power for most industrial applications like manufacturing plants, commercial facilities, data centers, telecom towers, hospitals, food processing, and utility power plants.

Why isn’t there a standard voltage around the world?

Europe and most other countries in the world use a voltage which is twice that of the US. It is between 220 and 240 volts, whereas in Japan and in most of the Americas the voltage is between 100 and 127 volts.

Originally Europe was 120 V too, just like Japan and the US today, but it was deemed necessary to increase voltage to get more power with fewer losses and less voltage drop from the same copper wire diameter. At the time the US also wanted to change but because of the cost involved to replace all electric appliances, they decided not to. At the time (50s-60s) the average US household already had a fridge, a washing-machine, etc., but not in Europe.

USA, Mexico, Colombia, Venezuela, American Samoa, Brazil, Bahamas, Bermuda, Dominican republic, Japan, Ecuador, Honduras, Panama and more other countries are now using low voltage UPS.

In countries having higher voltages, energy losses are lower, but the risk of sustaining injuries is much higher. 

Rack UPS:

Rack UPS is a power supply equipment mainly used for centralized power supply in security system integration, which is installed on a standard rack and is structured like a server. It is an inevitable product for standardized management and centralized management of security systems.

Diagram of Rack UPS:

Installation method:

The rack UPS can be fixed in a standard network cabinet through rails. Compared to traditional vertical (tower) UPS, the rack UPS can be installed in a standard cabinet, saving floor space, easy to install, use, maintain and can also use a shorter power connection cable. It increases the availability of the entire system by reducing the point of failure between critical equipment and the load. Just like our Power Lead2 Rack UPS. With 19 inch standard rack design, self-adjusting output frequency, smart battery management system and network management, PL2 RM series is a perfect choice for computers, IT equipments and other sensitive devices.

Advantages of Rack UPS:

The installation is simple, the expansion is convenient and the investment is saved. The rack-mounted UPS power supply enables the power supply system to be on demand, enabling the capacity to grow dynamically with the development of the business which not only meets the expansion requirements of the later business but also reduces the initial acquisition cost of the user. Attractive features are Parallel redundancy, stable operation and high reliability. No need for an electrician or facilities involvement. Ability to do your own maintenance/user serviceable.

Disadvantages of Rack UPS:

Not ideal for mission critical equipment that requires high availability. Takes up valuable rack space and limited battery life (2-3years). Not as efficient as 3 phase UPS. Batteries might not be hot swappable.

  Even though a UPS unit is effectively just a sophisticated battery, there are tons of little features that can greatly enhance your UPS experience.

What is tower UPS?

The Uninterruptible power supply system in tower design that features a quick-access front panel that makes replacing batteries easy is known as Tower UPS. It should be the most well-understood type of server structure, because its shape and structure are similar to those of vertical PCs. Of course, due to the server's motherboard scalability and the number of slots. Therefore, the size of the mainframe is larger than that of the ordinary motherboard. Therefore, the mainframe chassis of the tower UPS is larger than the standard ATX chassis. Generally, sufficient internal space is reserved for future redundancy expansion of the hard disk and the power supply.

What is the difference between a rack UPS and a tower UPS?

In fact, there is no difference in performance between rack UPS and tower UPS. The biggest difference is the installation method.

The rack UPS is installed on a standard rack and is structured like a server. The tower UPS is placed separately, installed on the floor and has space requirements. Whether you choose rack or tower depends on the environment and space of your UPS. The rack UPS can be fixed in a standard network cabinet through rails. The tower UPS is generally placed on the ground and cannot be placed on the rack.

How to choose tower UPS and rack UPS?

The UPS placement environment is the key to distinguish between tower UPS and rack UPS. If a neat machine room or a high-environment working group is required, the rack UPS power supply is required. Meanwhile tower UPS can be placed in a harsh climate or environment. Rack UPS can be installed vertically or horizontally as per requirement elsewhere Tower can be installed only vertically. Considering the heat dissipation tower UPS is better in that case as it is larger in size. In short, choosing between tower UPS and rack UPS should be based on their specific needs and budget.

Even though a UPS unit is effectively just a sophisticated battery, there are tons of little features that can greatly enhance your UPS experience.