Circuit breakers, protection relays and busbars form the operating core of an electrical distribution system. The breaker interrupts current, the relay decides when interruption is necessary, and the busbar carries…
Die Dimensionierung eines Transformators ist mehr als nur das Teilen der Gesamtlast durch einen Prozentsatz. Eine zuverlässige Auswahl rechnet die Reallast in kVA um, berücksichtigt Bedarf und Gleichzeitigkeit, prüft Motoren und Oberschwingungen, berücksichtigt die Umgebung und die Zukunft…
High voltage allows electric power to move long distances with lower current and lower conductor losses, but it also increases insulation, clearance, protection and safety requirements. This guide explains what voltage…
Ein Leitungsschutzschalter, formeller ein Kleinleistungsschutzschalter (MCB), schützt Niederspannungs-Endstromkreise vor Überlast und Kurzschluss. Er kann nach Behebung des Fehlers zurückgesetzt werden, muss jedoch ausgelegt sein für…
An electrical distribution system transfers power from a utility connection or generator through substations, transformers, switchgear, panels and cables to the final loads. Good design delivers acceptable voltage,…
A step-up transformer raises alternating voltage from the primary side to the secondary side. For approximately the same apparent power, the higher-voltage side carries lower current. Step-up units connect generators…
Converting kVA to amps is one of the most common calculations in transformer, generator, cable and switchgear selection. The arithmetic is simple, but the result is only correct when the phase arrangement and voltage…
A power factor correction capacitor supplies reactive power close to an inductive load, reducing the reactive current drawn from the utility. Correctly applied, a capacitor bank can lower current, release transformer…
What is a substation? An electrical substation is a controlled point in a power system where electricity is transformed, switched, protected, measured, and routed. It connects generation and transmission networks to…
A transformer changes alternating voltage through electromagnetic induction. If a transformer raises the voltage, it will reduce the current for approximately the same transferred apparent power, excluding losses.…