Documents Protective Device Numbers

Protective Device Numbers Protective relays are commonly referred to by standard device numbers. For example, a time overcurrent relay is designated a 51 device, while an…

Documents Electrical Protection System

ELECTRICAL POWER SYSTEM DEVICE NUMBERS AND FUNCTIONS The devices in switching equipment are referred to by numbers, with appropriate suffix letters when necessary, according…

Documents Protection Relay Setting

ABSTRACT CALCULATIONS OF PROTECTIVE RELAY SETTINGS FOR A UNIT GENERATOR FOLLOWING CATASTROPHIC FAILURE by Jaime Anthony Ybarra December 2011 After a catastrophic failure…