High Voltage Arc Flash Assessment and Applications
Arc flash assessment based on IEEE 1584 has limitations with respect to the voltage. The voltage range applicable to IEEE 1584-2018 remains unchanged at 208V through 15kV. Low voltage range …
Recommended Protection Relay Grading Interval
Typical Protection Relay Timing Errors Protection relay grading intervals are critical in ensuring selective coordination in power systems. The recommended protection relay grading intervals typically depend on the type of …
Earthing Systems – Design Calculations Analysis
Earthing systems are essential components of electrical systems, serving to safeguard individuals in close proximity from potential electric shocks and ensuring the proper functioning of equipment in the event of …
Compliance to Statutory Laws
I was reminded of this article which I have written about many years ago when I attended some product presentations about variable speed drives. What catch my attention most was …
Selection of System Voltage
The selection of utilization and distribution voltage levels is one of the most important considerations in power system design. System voltages usually affect the economics of equipment selection and plant …
Compliance to Standards and Statutory Laws
What is a Statutory Law? What do NFPA 70, BS 7671 and AS/NZS 3000 have in common? The former is National Electrical Code (U.S.), the next is the wing regulation …