Filipino Professional Electrical Engineer
In late 2009, the International Society of Automation (ISA) and Underwriters Laboratories Incorporated (UL) jointly issued ANSI/ISA 60079-0 Explosive atmospheres – Part 0: Equipment – General Requirements which is a …
Background In 2010, the new standard IEC 61439 series was published to replace the IEC 60439 series. The purpose of the IEC 61439 series of standards is to harmonize as …
I was reminded of this article which I have written about two (2) years ago when I attended some product presentations about variable speed drives. What catch my attention most …
Deciding on what protective devices need to be used in an application is a difficult task unless you are doing electrical protection as your profession. An appendix of this standard …
In this article, I have discussed the difference between a conventional transformer and a K-factor rated transformer. In modern day plants, Variable Speed Drives (VSD) are widely used. The project …
Is it possible to use International Standards such as IEC 60364 and NFPA 70 in the Philippines? In Clause 1.0.1.4.a of the PEC Edition 2009 states that, (c) The authority …