GE 239 Instruction Manual page 9

CHAPTER 1: OVERVIEW
3 PHASE
4160V BUS
CONTACTOR
239 MOTOR PROTECTION RELAY – INSTRUCTION MANUAL
Courtesy of NationalSwitchgear.com
400A
52
FUSED
TRIP
3
PHASE
CTs
GROUND
CT
THERMISTOR/
STATOR RTD
BEARING
RTDs
MOTOR
LOAD
239 RELAY
37 UNDERCURRENT
46
UNBALANCE
LOCKED ROTOR
48
50 SHORT CIRCUIT
51 TIMED OVERLOAD
AUXILIARY
50G INSTANTANEOUS
GROUND FAULT
STATOR OVER
49
TEMPERATURE
38 BEARING OVER
TEMPERATURE
FIGURE 1–1: Continuous Protection Features
86
TRIP
RELAY
74
FAULT/
PROCESS
ALARM
ALARM
RELAY
FAULT/
ALARM/
RELAY
PROCESS
CONTROL
SERVICE
SERVICE
RELAY
ALARM
RS485
RS485 REMOTE
COMMUNICATION
819763AF.CDR
1–3