Schweitzer Engineering Laboratories SEL-787-2 - Page 29

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