Schweitzer Engineering Laboratories SEL-787-2 Manual page 29

SEL-787-3S Rear and Side Panels
(A) Rear-Panel Diagram
Figure 42 SEL-787-3S With DeviceNet and Hybrid 4 DI/4 DO Option
SEL-787-2E Front Panel
Relay Powered Properly/Self-Tests are Okay
Instantaneous/Definite Time-Overcurrent Trip
Inverse Time-Overcurrent Trip
Figure 43 Front Panel With Default Configurable Labels
Schweitzer Engineering Laboratories, Inc.
Trip Occurred
Differential Trip
Over-/Undervoltage Trip
Over-/Underfrequency Trip
Volts/Hertz Trip
(B) Side-Panel Diagram
SCHWEITZER
ENGINEERING
LABORATORIES TRANSFORMER PROTECTION RELAY
TARGET
ESC
RESET
ENABLED
SELECTED
BRKR1
TRIP
CLOSED/OPEN
DIFFERENTIAL
SELECTED
BRKR2
INST OC
CLOSED/OPEN
TOC
AUX 2
O/U VOLT
O/U FREQ
AUX 3
V/Hz
PORT F
29
SEL–787
ENT
ENABLED
LOCK
DISABLED
BREAKER CLOSING
CLOSE
BREAKER OPENING
TRIP
AUX 1
SEL-787-2, -3, -4 Data Sheet