Super Capacitor – The Future of Energy Storage
The supercapacitor, also known as Electrochemical Double Layer Capacitors (EDLCs), differs from a regular capacitor in that it has a very high capacitance. A capacitor stores energy by means of …
Isolation of Neutral Conductor in Hazardous Areas
IEC 60079-14 (2007) Clause 8.2 Electrical isolation, states that: To allow work to be carried out safely, suitable means of isolation (for example isolators, fuses and links) shall be provided …
IEC Motor Protection Coordination
IEC 60947-4-1 addresses coordination between the motor circuit protective devices and the motor starters. It also provides a method to measure performance of these devices if a short-circuit occurs. This …
No problem with the Specs, its the interpretation
In any project particularly the large ones, numbering procedures and specification is a very important document. This document makes or breaks the success of automation and the implementation of maintenance …
Non-hazardous Area – IEC 60079
IEC 60079 is concerned with the classification of areas where flammable gas or vapour or mist hazards may be present. The classification may be used as a basis to support …
Resistance of Earth Electrodes in Parallel
In previous articles Single Earth Electrode and Earthing Resistance Calculation, I have presented methods of calculating the earth resistance using IEEE or IEC methods. AS 1768 Appendix C recommends that …