8
EATON
www.eaton.com
Effective September 2013
Instructional Leaflet IL01301064E
Operating Manual for Series NRX
Digitrip Trip Units 1150 / 1150i
Table 4. Alarms
Alarm Type
Digitrip 1150/1150i
Step Size
Alarms - Current
High load alarm setting
Off, 50% - 100% x (
I
r
)
5%
High load alarm time delay
1 - 60 seconds
1 second
Amp unbalance alarm setting
Off, 5% - 25% x (
I
r
)
1%
Amp unbalance alarm time delay
0 - 240 seconds
1 second
Neutral ampere alarm setting
Off, 10% - 100%
5%
Neutral ampere alarm time delay
1 - 60 seconds
1 second
Ground alarm
Off, 10% - 100% Style LSIG or LSIA only
1%
Ground alarm time delay
100 ms
–
Alarms - Voltage
Voltage Alarms
Enable, Disable
Undervoltage alarm
Off, 90 - 670V
1 volt
Undervoltage alarm time
1 - 250 seconds
1 second
Overvoltage alarm
Off, 180 - 720V
1 volt
Overvoltage alarm time
1 - 250 seconds
1 second
Voltage unbalance alarm
Off, 5% - 50%
1 %
Voltage unbalance alarm time
1 - 250 seconds
1 second
Phase rotation alarm
Off, ABC, CBA
–
Alarms - Frequency
Frequency Alarms (based on Van)
Enable, Disable
Underfrequency alarm
Off, 45 - 65 Hz
0.1 Hz
Underfrequency alarm time
0.20 - 5.0 seconds
20 ms
Overfrequency alarm
Off, 45 - 65 Hz
0.1 Hz
Overfrequency alarm time
0.20 - 5.0 seconds
20 ms
Alarms - Power Quality
Power Alarms
Enable, Disable
kW Demand Setting
off, 1- 65500 kW
1 kW
kW Demand Time Delay
1 - 60 seconds
1 second
kVA Demand Setting
off, 1 - 65500 kVA
1 kVA
kVA Demand Time Delay
1 - 60 seconds
1 second
Reverse Power Setting
off, 1 - 65500 kW
1 kW
Reverse Power Time Delay
1 - 60 seconds
1 second
Power Factor Setting
off, 50% - 95%
5 %
Power Factor Time Delay
1 - 60 seconds
1 second
THD Setting
off, 10% - 30%
1 %
THD Time Delay
1 - 60 seconds
1 second
Alarms - System Diagnostics
Status/long pickup LED
•
Cause of trip LEDs
j
•
Alarm LED
•
Operation count alarm
Off, 1 - 12500 counts
1 count
j
Four cause of trip LEDs indicate LONG, SHORT, INST, or GROUND trip. Making Current Release protection trip is indicated by the Instantaneous LED
