Power
Table 3 Table 2
IP rating of industrial power supplies now plays a more important role than it did a few years ago. The DC supply is very often installed directly on the machines, outside the protective cabinet. To ensure the safety of employees and the correct functioning of the power supply, IP54 is required as a minimum across all system components (e.g., SPS, HMI, sensors etc.).
For these applications, PULS has developed the field power supplies in the FIEPOS product family.
Figure 1
Figure 1: The decentralised FIEPOS switch-mode power supplies with a high IP rating – IP54, IP65 or IP67 – have been developed for flexible use directly in the field.
Summary
The IP rating describes how well a device is protected against accidental contact, foreign objects and liquids. The majority of IP codes consist of two digits. The first digit represents the protection against accidental contact and foreign objects, while the second digit indicates the protection against liquids and moisture. The higher the numbers, the greater the protection. Industrial power supplies that are used inside a cabinet normally have the rating IP20. Power supplies installed outside a protected environment should have a higher rating, e.g., IP54 or IP67.
www.pulspower.com
www.cieonline.co.uk.
Components in Electronics
November 2023 47
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