Protection features, Standard current-based protection, Ground fault current based protection – Rockwell Automation 592- E300 Overload Relay User Manual User Manual
Page 19: Voltage and power based protection
Rockwell Automation Publication 193-UM015B-EN-P - June 2014
19
Product Overview Chapter 1
Overload Relay Expansion Bus (four Digital Expansion Modules, four Analog
Expansion Modules, and one Operator Station).
Protection Features
Standard Current-Based Protection
All versions of the E300
Electronic Overload Relay provide the following motor
protection functions:
•
Thermal Overload (51)
•
Phase Loss
•
Current Imbalance (46)
•
Undercurrent – load loss (37)
•
Overcurrent – load jam (48)
•
Overcurrent – load stall
•
Start Inhibit (66)
Ground Fault Current Based Protection
The E300 Electronic Overload Relay sensing modules and control modules with
a ground fault current option provides the following motor protection function:
•
Ground Fault – zero sequence method (50N)
Voltage and Power Based Protection
The E300 Electronic Overload Relay sensing modules with voltage sensing
provides the following motor protection functions:
•
Undervoltage (27)
•
Overvoltage (59)
•
Phase Reversal (47) – voltage based
•
Over and Under Frequency (81) – voltage based
•
Voltage Imbalance (46)
•
Over and Under Power (37)
•
Over and Under Leading/Lagging Power Factor (55)
•
Over and Under Reactive Power Generated
•
Over and Under Reactive Power Consumed
•
Over and Under Apparent Power