Arc Flash Studies
Arc Flash Studies Overview Power Testing Ltd (PTL) has been engaged by a large industrial user to upgrade their 11 kV main distribution system. The site consists of various 11 kV and 0.4 kV switchboards, large motors and significant on-site combined heat and power...
Cable Studies for a Weak 110 kV Transmission System
Cable Studies for a Weak 110 kV Transmission System Overview Grid development based on underground cables due to renewable generation integration at a weak part of a transmission system necessitated studies to check whether possible resonance issues will result in...
Circuit Breaker Derating due to High DC Time Constants
Circuit Breaker Derating due to High DC Time Constraints Overview Due to expansion plans and new generation connections, EirGrid and System Operator for Northern Ireland (SONI) are expecting increased fault levels with high DC time constants in some areas of the...
