Addressing Ground Faults on MV Generators
Jul 1, 2009, By Sergio Panetta, P.E., i-Gard, and David D. Shipp, P.E., Eaton Electrical Systems & Services
Medium-voltage (MV) generators are not designed to withstand full fault current during a single phase-to-ground fault, which is why they are connected...
Verifying Ground-Fault Coordination for MV Power Cable Shielding
Aug 1, 2008, By John DeDad, Senior Director, Editorial and EC&M Development
According to the IEEE Buff Book, "A power cable must be protected from overheating due to excessive short-circuit current flowing in its conductor," which may damage or destroy the insulation....
Ground-Fault Current: Problems and Solutions
Mar 1, 2007, Edited by John DeDad, senior director, editorial and EC&M development
When designing ground-fault protection (GFP) for a power distribution system, you should always consider the nature of the power source. If the power...
Ground-Fault Relay Protection Schemes
Nov 15, 2004, By David Murray, IPC Resistors, Inc.
Improve your customer’s system performance by exceeding the minimum safety requirements of the NEC...
Ground Fault Protection on Construction Sites
Jun 1, 2003, By John Jansen, Clare Instruments U.S., Inc.
Do you know what OSHA has to say about electrical safety testing requirements on jobsites?...
Arc Fault/Ground Fault Tester Can Take the Heat
May 1, 2003, Edited By Amy Florence Fischbach, Staff Writer
More electricians are installing AFCIs to comply with the Code, but up until now, neither the installer nor the inspector had any means available to properly test the devices....
Monitor Ground Fault Leakage Currents
Aug 1, 1999, By Pentti Taskinen
Most power quality problems are due to incorrect connections of an electrical system. Using CTs and leakage current monitors, you can check an electrical system during acceptance testing of the installation and also during maintenance and renovation of the system....
Locating That Underground Cable Fault
Feb 1, 1999, Dennis Koep
What method or combination of methods is best for locating underground cable faults?Finding the location of an underground cable fault doesn't have to...
Ground-fault coordination should include MV cable shielding.
Feb 1, 1999, DeDad, John A.
Verification of shield performance under ground-fault conditions will prevent systemwide cable damage.As we all know, the metallic shielding in a medium...
