Electrical Construction & Maintenance

Stumped by the Code? Code Requirement for Sizing the Overcurrent Protection of Conductors

All questions and answers are based on the 2017 NEC. Q. What is the Code requirement for sizing the overcurrent protection of conductors? A. Except as permitted by Sec. 240.4(A) through (G), ...
Electrical Construction & Maintenance

Stumped by the Code? Sizing Overcurrent Protection for Conductors

Q. What are the Code rules for sizing overcurrent protection for conductors? A. Except as permitted by (A) through (G), conductors must be protected against overcurrent in accordance with their ...
T&D

Two, Three or Four Winding Protection for Transformers of All Sizes

Beckwith Electric's Transformer Protection System M-3311A provides protection, control, monitoring and user interface functions for two, three or four-winding transformers. The system includes ...
IEEE

A Definite-Inverse-Time Composite Zero-sequence Overcurrent Protection Method for the Transformer and Powerline Protection Coordination in High-Voltage Power Systems

Abstract: Zero-sequence overcurrent (ZOC) protection is the last line of defense for protection when differential protection and distance protection both fail to detect and isolate the ground fault.
EDN

Overcurrent Protection: Fuse or PTC?

When it comes to overcurrent protection of electronic equipment, fuses have long been the standard solution. They come in a wide variety of ratings and mounting styles to fit virtually any application ...
pv magazine International

Sizing fuses to protect BESS power circuit from overcurrents

Electrical overcurrents can not only damage systems, but also cause costly downtime. Fuses are said to be a great way to protect a battery energy storage system (BESS) simply and cost-effectively. In ...