Soft-starter or Variable Frequency Drive – Applications and Differences
A Soft Starter and a Variable Speed Drive (VSD), sometimes also referred to as a Variable Frequency Drive (VFD), are both devices that can control the starting of a motor, …
Selection of Power Circuit Breaker Rating – Part 2
Note: This is will be part 2 of the selection of power circuit breaker rating series. Part 1 could be found here. Voltage Rating Selecting the correct voltage rating of …
Selection of Power Circuit Breaker Rating – Part 1
Note: This is will be part 1 of the selection of power circuit breaker rating series. The standard power circuit breakers as used in high voltage switchgears will be used …
What is a trip free circuit breaker?
Definition A trip-free circuit breaker is a type of circuit breaker that cannot be forcibly held closed (or in the “on” position) during an overcurrent or fault condition. In simpler …
A Safety Measure Taken for Granted
There is a saying that “experience is the worst teacher, test comes first before the lesson”. This is true in every aspect. In electrical engineering design, earthing or grounding is …
Industrial Power System Design – Selection of System Voltage
Selecting the appropriate system voltage for an industrial power system is crucial. The system voltage impacts the system’s efficiency, equipment size, protection considerations, and overall cost. The process is not …