GE 339 Instruction Manual page 178

S3 PROTECTION
6–56
Figure 12: Main Protectin menu - 1 of 2
S3 PROTECTION
THERMAL PROTECTION
SHORT CIRCUIT
MECHANICAL JAM
▼
UNDERCURRENT
CURRENT UNBAL
LOAD INCR ALARM
GROUND FAULT
NEUTRAL IOC1
PHASE UV 1
PHASE UV 2
PHASE OV 1
PHASE OV 2
UNDERFREQUENCY1
UNDERFREQUENCY2
OVERFREQUENCY1
OVERFREQUENCY2
UNDERPOWER
NEGATIVE SEQ OV
PHASE REVERSAL
VT FUSE FAILURE
ACCELERATION
RTD PROTECTION
TWO SPEED MOTOR
896758A1. cdr
S3 CURRENT UNBAL
UNBAL ALARM FUNC
▼
UNBAL ALARM PKP
UNBAL ALARM DELAY
UNBAL TRIP FUNC
UNBAL TRIP PKP
UNBAL TRIP DELAY
OUTPUT RELAY 4
...
BLOCK 3
S3 LOAD INCR ALARM
LOAD INCR FUNC
▼
LOAD INCR PKP
LOAD INCR DELAY
OUTPUT RELAY 4
...
BLOCK 3
S3 GROUND FAULT
GND ALARM FUNC
▼
GND ALARM PKP
GND ALARM ON RUN
GND ALARM ON START
GND TRIP FUNC
GND TRIP PKP
GND TRIP ON RUN
GND TRIP ON START
OUTPUT RELAY 4
...
BLOCK 3
S3 NEUTRAL IOC1
NTRL IOC1 FUNCTION
▼
NTRL IOC1 PKP
NTRL IOC1 DELAY
OUTPUT RELAY 4
...
OUTPUT RELAY 6
BLOCK 1
BLOCK 2
BLOCK 3
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: SETPOINTS
S3 THERMAL PROTECTION
THERMAL O/L FUNC
▼
START PROTECTION
LOCKED ROTOR CURR
SAFE STALL T COLD
CURVE MULTIPLIER
THERMAL O/L PKP
UNBALANCE K FACTOR
COOL TIME RUNNING
COOL TIME STOPPED
HOT/COLD RATIO
RTD BIAS FUNC
RTD BIAS MINIMUM
RTD BIAS CENTER
RTD BIAS MAXIMUM
THERMAL ALARM FUNC
THERMAL ALARM PKP
≤
AUTO RST TCU 15%
OUTPUT RELAY 4
...
BLOCK 3
S3 SHORT CIRCUIT
SHORT CIRCUIT FUNC
▼
SHORT CIRCUIT PKP
SHORT CIRCUIT DELAY
OUTPUT RELAY 4
...
BLOCK 3
S3 MECHANICAL JAM
MECH JAM FUNC
▼
MECH JAM PKP
MECH JAM DELAY
OUTPUT RELAY 4
...
BLOCK 3
S3 UNDERCURRENT
U/CURR ALARM FUNC
▼
BLK U/C ON START
U/CURR ALARM PKP
U/CURR ALARM DELAY
U/CURR TRIP FUNC
U/CURR TRIP PKP
U/CURR TRIP DELAY
OUTPUT RELAY 4
...
BLOCK 3