UPS – What Are the Different Types of UPS?

Ups stands for United Parcel Service and is an American multinational shipping company. Founded in 1907, it started out as the American Messenger Company, a business that specialized in telegraphs. Today, UPS is one of the world’s largest shipping couriers. Having served millions of satisfied customers, it has expanded to more than a million customers in 180 countries. In addition to its flagship UPS Express service, also provides services in a number of different countries.


A line-interactive UPS is a power protection system that shields electronic equipment from five common power problems. During normal operation, the load is fed directly from the mains. During prolonged outages, line interactive UPSs switch to battery power. During this transition period, the UPS retains the integrity of the load, because its autotransformer will use its built-in voltage stabilisation filters and suppress transients.

While line-interactive UPS systems provide protection for connected devices during power outages, they are not designed to protect sensitive equipment from power anomalies, which can degrade performance and cause equipment to prematurely fail. While the operating life of line-interactive UPSs is generally comparable to conventional UPSs, some features can increase reliability and operating life. Therefore, you should consider the following factors when comparing line-interactive UPS systems and other power protection systems.

Modified sine wave

Most UPS units are line-interactive or standby models and come with a modified sine wave. These models can be beneficial for home electronics, but not all devices are affected. While your electric shaver and toaster oven may operate fine with modified sine waves, they can produce a slightly fuzzier image and cook times. The same goes for televisions and monitors. Most UPS units use modified sine waves by design.

True sine waves are ideal for electronic devices. A UPS that produces a true sine wave is the most expensive option and requires more complicated inverter circuitry. A modified sine wave UPS is generally more affordable than a pure one, though. And true sine waves aren’t found only on the most expensive models. If you have a small budget, it’s still worth the extra cost. There’s one major disadvantage to this, however.


UPS systems powered by a flywheel have multiple benefits. The UPS can provide full time power to critical loads, isolate incoming power quality problems, and ride through interruptions. Flywheel systems can also be configured to store more energy than a single battery, increasing the UPS’s power level and ride through time. In addition, they are environmentally friendly and help reduce the total cost of ownership of power systems. Some configurations are ideal for hospitals, colocation facilities, and supercomputer centers.

A flywheel UPS also works in conjunction with an inverter, though some systems are being sold without one. The power inverter in a conventional UPS system is known as a silicon control rectifier, and it switches relatively slowly, requiring an external commutation signal to operate. Gate turn off thyristers are much faster, but they still require significant operating current. Flywheel UPS systems are also limited in ride-through time.


Modular UPS systems offer several advantages over conventional UPSs. These systems are more flexible because of their scalability, allowing clients to buy the exact amount of system they need based on their initial unit requirements, and expand later as business demands increase. This allows clients to maximize the system’s benefits while minimizing their TCO. Moreover, modular UPSs allow the client to buy only the modules they need, not the whole system.

This type of UPS also offers higher levels of redundancy. This is due to their modular design and the ability to swap modules while they are operational. It also helps reduce the mean time to failure, and ensures maximum up-time and availability. Modular UPS systems are also easier to maintain and can be installed quickly and easily. Service engineers can spend less time inspecting battery sets. They can also save space by using modular UPS systems. Once installed, these UPS systems are easier to maintain than traditional ones.