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8.2
SEL-787 Relay
Instruction Manual
Date Code 20081022
Front-Panel Operations
Human-Machine Interface
Figure 8.1
Front-Panel Overview
This versatile front panel supports the following features so you can customize
it for your needs:
➤
Rotating display on the HMI
➤
Programmable target LEDs
➤
Programmable pushbutton LEDs
➤
Slide-in configurable front-panel labels to change the
identification of target LEDs, pushbuttons, pushbutton LEDs
and their operation.
Human-Machine Interface
Contrast
You can adjust the LCD screen contrast to suit your viewing angle and
lighting conditions. To change screen contrast, press and hold the
{ESC}
pushbutton for two seconds. The SEL-787 displays a contrast adjustment box.
Pressing the
{Right Arrow}
pushbutton increases the contrast. Pressing the
{Left
Arrow}
pushbutton decreases the screen contrast. When you are finished
adjusting the screen contrast, press the
{ENT}
pushbutton; this process is a
shortcut for changing the LCD contrast setting FP_CONT in the front-panel
settings.
Relay Powered Properly And Self-Tests Are Okay
Trip Occurred
Differential Trip
Instantaneous/Definite-Time Overcurrent Trip
Time Overcurrent Trip
Over/Undervoltage Trip
Over/Underfrequency Trip
Volts/Hertz
ENABLED
LOCK
DISABLED
BRKR 1
SELECT
BRKR 2
BRKR 1 CLOSED
CLOSE
BRKR 2 CLOSED
BRKR 1 OPEN
TRIP
BRKR 2 OPEN
SEL-787
TRANSFORMER PROTECTION RELAY
ENABLED
TRIP
DIFFERENTIAL
INST. OVERCURRENT
TIME OVERCURRENT
OVER/UNDERVOLTAGE
OVER/UNDERFREQUENCY
VOLTS/HERTZ
NOTE:
See the Preface for an
explanation of typographic
conventions used to describe menus,
the front-panel display, and the front-
panel pushbuttons.
Содержание SEL-787
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