Supplement: Power
How much backup time is required? Are there loads in this application that do not need backup, and if so, how many? Based on this information,
recommendations can be made for the required output power of the power supply, the backup method, and any additional devices that may be needed. Of course, proven standard combinations that are often used by our customers and are typical for the industry also result from the corresponding requirements of the standard.
Summary: Continues from page 27
To ensure reliable operation, it is crucial that the devices do not shut down even at temperatures above 70 °C. In the event of a necessary safety shutdown, they must also restart independently.
Heat has a negative impact on the lifetime and reliability of DC-UPS and power supplies
The minimum lifetime of DC-UPS and DIN rail power supplies is determined by the lifetime of electrolytic capacitors, which are the most critical element in the devices. Even a temperature increase of +10 °C in the power supply halves the lifetime of the capacitors. To achieve the longest possible lifetime of DIN rail power supplies and DC-UPS, it is therefore important that the devices are protected from overheating. The cooling concept chosen during the development of the power supply plays a crucial role. Ideally, the devices are designed to generate as little heat as possible from the outset. This is achieved through high efficiency
PULS Buffering system
and correspondingly low power losses. Since losses cannot be completely avoided, it is essential to efficiently dissipate the resulting heated air from the device.
long-lasting power supplies: The “Cool Design” by PULS To ensure a long lifetime for power supplies, it is essential to minimise heat generation within the devices. With the “Cool Design” concept, PULS defines the interaction of three key factors that lead to low heat generation: firstly, consistently high efficiency; secondly, optimised dissipation of heat to the device’s surroundings; and thirdly, the thoughtful arrangement of temperature- sensitive components within the device. In terms of DC-UPS systems, PULS has so far pursued the approach of realising the power supply and the DC-UPS module with separate devices, rather than integrating both functions into one housing. This separates the power supply, as the primary
heat source, from the sensitive electrolytic capacitors in the UPS module. However, PULS’s latest subsidiary Adelsystem has been successfully offering an all-in-one solution for several years, combining a power supply and a DC-UPS in one device. The Italian developers have chosen a smart device concept for this approach.
DC-UPS – with battery or capacitor storage?
Currently, PULS offers two options for an uninterruptible power supply to the load in an emergency: both double-layer capacitors and lead-acid batteries can serve as energy storage in DC-UPS systems for industrial applications.
Double-layer capacitors, also known under trade names such as Ultracaps, Supercaps, or Greencaps, have been available on the market for over 25 years and have developed into reliable and proven components. These initially quite expensive components are suitable as energy storage for DC-UPS systems and can be used in applications such as storing braking energy or providing short peak currents.
Which energy storage solution is suitable for which application cannot be answered in general. Each application is individual and therefore requires a specific analysis to ensure the best possible uninterruptible power supply.
The following questions can help find the ideal backup solution for your system: What output voltage is required? How much current must be available as a reserve?
References (1)
Reliable power supply in critical infrastructures is of paramount importance for the safety and well-being of society. By adhering to relevant standards and guidelines, operators can ensure that their systems function safely. The use of modern technologies also allows for the benefits of renewable energies to be harnessed while addressing the associated challenges. UPS systems are indispensable for ensuring a reliable and stable power supply in critical infrastructures. They protect against outages, voltage fluctuations, and data loss, thereby contributing to the safety and efficiency of operational processes. Implementing UPS systems in critical infrastructures is complex and requires careful planning and good consultation with the manufacturer. Despite these challenges, UPS systems are essential to guarantee the reliability and safety of power supply in critical areas.
Determining which UPS system is suitable for which application cannot be answered in general terms. Each application is unique and therefore requires a specific analysis. However, industry-specific application fields also define proven device combinations. Feel free to contact us (
https://www.pulspower.com/ contact/puls-worldwide/), and we will find the right solution for your application. PULS is a leading manufacturer of DIN-Rail power supplies, field power supplies and complementary units. The company was founded in Munich in 1980 by Bernhard Erdl and currently has around 1400 employees worldwide. The division Wiferion – a PULS brand develops innovative technologies in the field of inductive charging systems for automated guided vehicle systems and mobile robots. PULS manufactures all its products in its own plants in Chomutov/Czech Republic, Suzhou/China and Drebach/Germany.
www.pulspower.com
https://www.imk-boeckler.de/de/pressemitteilungen-15992-studie-berechnet-investitionsbedarf-in- deutsche-stromnetze-65371.htm
28 March 2025 Components in Electronics
www.cieonline.co.uk
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