Technical articles on electrical panels, low and medium voltage systems, standards, protection classes and field applications are published on the Devpan articles page. For corporate announcements and fair news, please visit our News page.
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Energy Monitoring in Switchgear: Meters, Modbus and SCADA Integration
Adding a power meter is not enough; CT selection, network topology and data points must be planned together.
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Cable Sizing and Voltage Drop Calculation
Cable size is set by three separate criteria: current capacity, voltage drop and short-circuit withstand.
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Surge Protective Device (SPD) Selection: Type 1, Type 2 and Type 3
Getting surge protection right inside the panel: SPD types, coordination and installation rules.
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What Is Selectivity? Protection Coordination in Switchgear
How to make sure only the nearest device trips during a fault: types of selectivity and their effect on panel design.
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Automatic Transfer Switch (ATS) and Generator Changeover Panels
The operating logic and design criteria of the ATS panel that moves the load to the generator during an outage.
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Motor Starting Methods: DOL, Star-Delta, Soft Starter and VFD
How the four starting methods differ in inrush current, torque and their impact on switchgear design.
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Switchboard Technical File, Rating Label and CE Conformity
The contents of a switchboard technical file, the rating label data and the verification chain behind CE conformity.
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Internal Arc Withstand and Arc Protection: What IEC 61641 Adds
How internal arc faults develop, what IEC 61641 verifies and which protection measures are genuinely effective.
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Choosing the Incoming Device: MCCB or ACB?
Differences between moulded case and air circuit breakers, selection criteria and a comparison on selectivity and maintenance.
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