3
–
The thresholds used during IP operation and the corresponding delays are displayed in a dedicated video page:
FRONT BUTTON FUNCTIONS
MENU button
- Used to enter or exit the various display and set-up menus.
Buttons
▲
and
▼
- Used to scroll between screens, select from available options on the display and change (increase/decrease) settings.
Button
- Used to scroll sub-pages, confirm selected options and switch between display modes.
DISPLAYING MEASUREMENTS
–
The
▲
and
▼
buttons allow the measurement display pages to be scrolled one at a time. The current page is shown on the title bar.
–
The first page displayed (main page) contains all the most important information in both numerical and graphical form. The limit thresholds are indicated by a small marker above the graphic bar, while the arrows under the graphic bar indicate the measurement
range (HI – LO).
– The next page displays an overview of the state of the Interface Protection System, showing both the state of the outputs to the IS and backup and the state of the control inputs. The black arrows indicate an active state, the grey ones an inactive state.
– Three pages with trip protection counters follow, divided into total trip count, voltage threshold trip count and frequency threshold trip count. The counters can be reset
through the Commands Menu.
–
In the pages that follow these pages, on the other hand, the measurements are in standard numerical format.
–
Some measurements may not be displayed, depending on the programming and the connection for the device (for example, if programmed for a system without neutral, the measurements relating to neutral are not displayed).
I48
6
GB
09
16
31
10
02
98
Protection
identification
Frequency
active
thresholds
Voltage active
thresholds
Frequency
thresholds
delay
Voltage
thresholds
delay
IS command
status
IP status:
‘OK’ if IS and back-up
are active, else ‘TRIP’
Back-up
command
status
IP digital input
status
IS feedback
signal status
IS, backup and
remote trip
counters
IS trip hour
counter
Voltage
threshold trip
counter
Frequency
threshold trip
counter
Measurement
Unit of
Measurement
Phase
indication
Sub-page
indication
Voltages
measured in
volts
Frequency
measured in
Hertz
Graphic bars
and % value of
the voltages
Graphic bar
and % value of
the frequency
Active voltage
thresholds
marker
Active frequency
thresholds
marker
