Rockwell Automation 1608 HC-DySC User Manual, 200 A - Manual (Page 23)

Rockwell Automation Publication 1608P-UM004A-EN-P - September 2013 23
Display Screen Chapter 5
Voltage Sag Events
A voltage sag is defined as the period when input RMS voltage drops to less than
88.5% of the rated DySC voltage. Details of each voltage sag and corresponding
HC-DySC protection are captured and saved to the voltage sag log.
Voltage Sag Log
The “Voltage Sag Log” screen (See Figure 19 ) displays a list of the last 61 voltage
sags. Reach this screen by pressing “VOLTAGE SAGS” button on the “HOME”
screen.
Figure 19 - Voltage Sag Log
Table 5 - Voltage Sag Log Description
Description Function
# Unique ID within the list (0-60) to identify the voltage sag
Time Start time and date of the voltage sag
Check Mark Denotes the HC-DySC protected the voltage sag
RMS% Worst-case RMS voltage (percent of nominal) across all phases
Duration Duration of the voltage sag
Note: Use the up/down arrows to navigate through the list. Press the “SELECT” button to view additional details about
the voltage sag