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 …
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 …
Normative and Informative Annexes Compliance
The terms ‘normative’ and ‘informative’ are commonly used in IEC and other derivative standards to define applications of annexes. A normative annex is an integral part of a Standard which …
ATEX Certified Equipment
Contents I. What is ATEX? II. Explosive Atmosphere
IEC 60076-5 Transformer Impedances
The impedance of a power transformer has a direct impact on the total cost of the power system. Cost of power transformer, protective devices, etc will be affected. Electrical Engineers …
Electrical Protective Devices and Their Applications
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 …