IEC 60079 Hazardous Area Zone Classifications
Hazardous area is defined in IEC 60079 as an area in which an explosive gas atmosphere is present, or may be expected to be present, in sufficient quantities to require …
IEC 62305 – Protection against lightning
Lightning is a very high-energy phenomenon. Lightning protection is oftentimes taken for granted as the probability of a lightning strike to a structure is low, and damage to properties and …
Lightning Protection – Rolling Sphere Method Accordning to Philippine Electrical Code 2017 Edition
Rolling Sphere Method The Rolling Sphere Method is a popular and acceptable method of implementing lighting protection on structures. In the Philippine Electrical Code, the rolling sphere method is mentioned …
ANSI/IEEE vs IEC Short Circuit Calculations Methodology
The differences between IEC methodology and ANSI/IEEE methodology in calculating short-circuit currents are: 1. DC Decay Component. ANSI/IEEE requires the calculation of a single Thevenin equivalent fault point X/R ratio, …
Importance of Project Design Stages
Successful projects, particularly big-budget ones, were not developed overnight. These projects have undergone several stages. Missing any one stage may cause disastrous effects on the projects leading to project delivery …
Rural Substation Design
Rural Electrification Program Republic Act NO. 10531 mandated the National Electrification Administration to promote sustainable development of the country through rural electrification program and to empower the electric cooperative to …