Logs
47
To view the trips, from the
Log Menu
, select
View Trip Log
.
The most recent trip displays as follows:
.
Press the Up
and Down
Arrow keys as shown on the dis-
play to view previous (up) or the next (down) trips in the log.
To reset the log, select
Reset Trip Log
from the
Log Menu
and
press the keypad arrow buttons until the Yes box is checked.
Press Escape
, then press Enter
to exit this menu and
reset the log.
If no trips have occurred, the display shows the following:
9.3
Min/Max Log
The SB Energy-Comm trip unit provides a log of the recorded
minimum and maximum (min/max) data. The Min/Max Log is a
log that automatically records the extreme values for all param-
eters measured by the trip unit. This includes all voltage, cur-
rent, power, frequency, power factor, harmonic distortion, and
auxiliary input parameters. Minimum and maximum values are
also provided for all demand measurements.
The trip unit Min/Max Log can be used to determine such val-
ues as the highest loading on a plant or feeder, peak demand,
voltage operating ranges, worst case power factor, highest
VAR loading for capacitor sizing, etc.
Minimum and maximum values for each parameter are logged
independently with a date and time stamp. Each value in the
Min/Max Log can be accessed from the front panel as well as
remotely through communications.
To view the min/max logs, select
View Min/Max Log
from the
Log Menu
.
A menu of the types of available min/max data appears:
The first set of min/max data is the current and crest factor data
for each phase, as well as neutral and ground current, and cur-
rent demand.
Selecting an individual piece of information, such as the
Phase
A Amps
, shows the following:
The data includes only the maximum values for current. Each
piece of data also includes the time and date when the value was
