Symmetrical components calculation is a valuable tool in system fault analysis and relay protection. Prior to the advent of computer-aided electrical system modelling software, system analyses were done manually. Today, …
It is a common sight in the Philippines to see structures, installations, and equipment not compliant with normal engineering standards. Filipino Engineers should be vigilant that safety in design and …
The first edition of the PEC published in 1962 by PAMEE was an adaptation of the NEC customized to suit the local Philippine environment. Several decades later and the PEC …
There are provisions in the Philippine Electrical Code stating the maximum voltage drop for branch circuits and feeders. Philippine Electrical Code Part 1/Chapter 2. Wiring and Protection/Article 2.10 – Branch …
The calculation of maximum and minimum short-circuit currents has been discussed in IEC 60909 – Calculation of Maximum and Minimum Short-circuit Currents. What is the significance of these values? The …
The calculation of maximum and minimum short-circuit currents as per IEC 60909 is based on the following assumptions. No change in the type of short circuit involved, that is, a …