GE 339

6–80 339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
S3 PROTECTION CHAPTER 6: SETPOINTS
Figure 6-33: Phase Overvoltage logic diagram
SETTING
PH OV FUNCTION Disabled = 0
Latched Alarm Alarm
Trip
SETTING
BLOCK 1: Off = 0 BLOCK 2: Off = 0 BLOCK 3: Off = 0
PH OV ALARM PKP
S R
LATCH
896831.cdr
LOGIC OPERAND
PH OV ALARM OP
LOGIC OPERAND
OR
OR
AND
AND
AND
AND
OR
AND
AND
INPUTS
Emergency Restart Input Lockout Reset Input
SETTINGS
Off = 0 Lockout Reset Off = 0
Emergency Restart
S4 CONTROLS
PH OV Alarm State: Operate
TARGET MESSAGE
ANY ALARM OP
PH OV TRIP OP
ANY TRIP OP
S R
LATCH
PH OV Trip State: Operate
TARGET MESSAGE
ANY ALARM PKP PH OV TRIP PKP ANY TRIP PKP
AND AND
OR
S3 PHASE OV
S3 PHASE OV
OR
Reset Input
Reset Off = 0
AND
OR
KEYPAD RESET
ANY LATCHED ALARM OP
PH OV State: Pickup
Alarm
TARGET MESSAGE
PH OV State: Pickup
Trip
S3 PHASE OV
Vab
PH OV PICKUP: PH OV DELAY:
Vbc Vca
RUN RUN RUN
Vcn or V ca > PICKUP
Van Vbn
Vcn
Vbn or Vbc > PICKUP
Van or Vab > PICKUP
DeltaWye
All Three
Operate for programmed combination
Any Two Any One
SETTING
PH OV PHASES
OR
896832A1.cdr
SETTING
Phase Voltage Inputs (associated setpoints)
SETTING
PH OV DELAY
t
PKP
S3 PHASE OV
S3 PHASE OV
OUTPUT RELAY X
SETTING
Do Not Operate, Operate