DIN rail UPS systems proposed by Mean Well

Published : 09/16/2020 11:30:17

The presence of UPS within AC and DC applications is becoming an increasingly widespread reality. The guarantee of a safe power supply even in case of mains failure is in fact an essential prerogative of various applications.

The increasing use of video conferencing and smartworking, for example, has led to an exponential growth in the sending of data through data centers and clouds that require a stabilized power supply to ensure the correct and continuous transmission of data. In fact, this is one of the typical applications in which UPS are used.

Unità di continuità elettrica

What is an UPS application?

Nowadays it is necessary to provide a UPS where electrical equipment can in no case remain without power, avoiding to create a more or less serious service or data loss.

The UPS (Uninterruptible Power Supply) consists of:' battery packs, inverters and control circuits. Its operation consists of charging the batteries when connected to the mains and, when disconnected from the mains, the UPS has the task of releasing the current stored in the batteries to the load.

The UPS, as described above, is composed of batteries and is therefore suitable for applications where there are frequent power outages but, in any case, it must be borne in mind that, in the event of an AC mains failure, the UPS takes about 2-10 milliseconds to start the voltage stabilization function.

Another detail to consider is the working temperature range of the batteries present in the UPS which usually is 0-40°C; in some applications it is therefore necessary to provide additional fans to ensure proper heat dissipation. In order to propose an improved product, power supply manufacturers have introduced buffer modules into the market.


Buffer module or UPS system?

As you can see from the table below, there are obvious differences between buffer module and UPS system. The buffer module is composed of capacitors which lead to several advantages: miniaturization, low cost, low maintenance and faster response time than UPS.

UPS vs modulo buffer

The internal capacitors of the buffer module and the power supply output are connected in parallel (see figure 3); when the power supply output turns off or fails, the capacitor in the buffer module will immediately provide power, ensuring sufficient time for data storage.

The buffer module is particularly suitable for data processing equipment or industrial computer power supply equipment. If the end user requires more load or more time for data storage, you can use multiple buffer modules in parallel, as shown in Figure 4.

Funzionamento condensatore unità UPS

The buffer module Mean Well DBUF, in 20A versions and 40A versions, is the smart choice for most users because of its reliability, low noise, compact size and excellent working temperature.


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