Smart 1-Line
TM
Page 24
4.1.2.1 Readings tab (AC-PRO-II only)
The Readings tab will appear on the right side of the window for AC-PRO-II trip units. It provides the
following information, features, and capabilities:
•
The following information will be retrieved automatically:
1. RMS Current values: Phase A, B, C, Neutral, Ground
2. Frequency
3. *If the AC-PRO-II is equipped with a Voltage Divider Module:
▪
RMS Voltage values:
•
Vab, Vbc, Vca (AC-PRO-II firmware v1.9 or later)
•
Van, Vbn, Vcn (AC-PRO-II firmware v1.2
– v1.8)
▪
Power values
•
Real Power (KW)
•
Apparent Power (KVA)
•
Power Factor (PF)
▪
Energy values
•
Real Energy (KWH)
•
Apparent Energy (KVAH)
4. Alarms and Status:
▪
Trip occurred Alarm with reset capability
▪
Quick-Trip Switch position
▪
Breaker position (if equipped with URC limit switch)
▪
Actuator Open circuit
▪
Trip unit Alarm relay conditions (depend on trip unit version and customer
settings)
•
UnderVoltage (can be reset by user)
•
OverVoltage (can be reset by user)
•
Phase Loss
•
LT (Long Time) Pickup (phase current exceeded LT Pickup setting)
•
Ground Fault (can be reset by user)
•
Sluggish Breaker (can be reset by user)
•
Trip (can be reset by user)
•
Internal Error
•
Actuator Open circuit
•
Acknowledge Trip and Reset Trip Alarm
1. To Acknowledge that you are aware a Trip occurred and reset the Trip Alarm, goto
the Readings or AC-PRO tab, and tap/click the (Alarm) Reset button. This will clear
the alarm in the trip unit, and it will remove the Red X from the breaker symbol in the
Smart 1-Line. This reset button can also be used to reset some other alarms.
•
See the next section for how to trip a breaker.
