Utility Relay Company AC-PRO-II, Инструкция по эксплуатации

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AC-PRO-II
®
Instruction Manual www.utilityrelay.com
Page 29
The AC-PRO-II stores the trip data for the last 8 trip events.
The stored trip data includes the following:
1. Trip counts
2. Trip type (see Table 12-A for types)
3. Time stamp (date and time).
4. Trip number (1-8, assigned by trip unit)
(if trip is the “Last trip”, this will be identified on the
screen).
5. Phase currents and voltages
6. Neutral and ground currents
7. Breaker clearing time for each phase
8. Waveforms can be viewed using InfoPro-AC
software application only. See Section 23.0.
This data can be accessed using the Trip History Menu.
See Figure 12.1.
NOTE: The date and time must be set properly, and a fresh
battery must be installed to ensure accurate trip history date
and time stamps.
Trip Type
Abbreviation
Trip Type Description
LT Long Time
ST Short Time
I Instantaneous
I-OVRD Instantaneous Override
I-CLOS Instantaneous on Close
GF Ground Fault
NOL Neutral Overload
QT-I QUICK-TRIP Instantaneous
QT-GF QUICK-TRIP Ground Fault
UV Under Voltage
OV Over Voltage
Table 12-A: Trip Types
The trip history data, including the associated waveform
capture data, can be viewed, saved and printed using the
InfoPro-AC software application. All trip unit data is also
available via RS485 Modbus RTU communications.
To ensure accurate recording of breaker clearing times, and
proper Sluggish Breaker
TM
Detection, the breaker position
contact user setting must be set properly. See Sections 10.0
and 11.21.
The AC-PRO-II uses multiple methods to determine trip
currents and voltages. However, some Instantaneous trips
may occur too rapidly for AC-PRO-II to report RMS trip
values. For these trips, AC-PRO-II will report “> Pickup
value” for the current values for all three phases.
See Figure 12.1 for the trip history screens navigation map.
12.0 Trip History