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345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
S3 PROTECTION
CHAPTER 6: SETPOINTS
Figure 16: Protection setpoint group 1(2) menu - 2 of 2
S3 SETPOINT GROUP 1
XFMR PCNT DIFF
RESTD GND FLT
GROUND TOC1
GROUND IOC1
GROUND IOC2
NEUTRAL TOC1
NEUTRAL IOC1
NEUTRAL IOC2
NEG SEQ TOC1
XFMR INST DIFF
THERMAL MODEL
PHASE TOC1
PHASE TOC2
PHASE IOC1
PHASE IOC2
GROUND TOC2
NEUTRAL TOC2
NEG SEQ TOC2
▼
S3 NEUTRAL TOC1
NTRL TOC1 FUNCTION
NTRL CT INPUTS
NTRL TOC1 PKP
NTRL TOC1 CURVE
NTRL TOC1 TDM
NTRL TOC1 RESET
OUTPUT RELAY 3
...
OUTPUT RELAY 6
BLOCK 1
BLOCK 2
BLOCK 3
RLY1 TRIP W1 BKR
RLY2 TRIP W2 BKR
▼
S3 NEUTRAL IOC1
NTRL IOC1 FUNCTION
NTRL CT INPUTS
NTRL IOC1 PKP
NTRL IOC1 DELAY
OUTPUT RELAY 3
...
OUTPUT RELAY 6
BLOCK 1
BLOCK 2
BLOCK 3
RLY1 TRIP W1 BKR
RLY2 TRIP W2 BKR
▼
S3 GROUND TOC1
GND TOC1 FUNCTION
GND CT INPUTS
GND TOC1 PKP
GND TOC1 CURVE
GND TOC1 TDM
GND TOC1 RESET
OUTPUT RELAY 3
...
OUTPUT RELAY 6
BLOCK 1
BLOCK 2
BLOCK 3
RLY1 TRIP W1 BKR
RLY2 TRIP W2 BKR
▼
S3 GROUND IOC1
GND IOC1 FUNCTION
GND CT INPUTS
GND IOC1 PKP
GND IOC1 DELAY
OUTPUT RELAY 3
...
OUTPUT RELAY 6
BLOCK 1
BLOCK 2
BLOCK 3
RLY1 TRIP W1 BKR
RLY2 TRIP W2 BKR
▼
S3 PHASE TOC1
PH TOC FUNCTION
PHASE CT INPUTS
PH TOC1 PKP
PH TOC1 CURVE
PH TOC1 TDM
PH TOC1 RESET
RLY1 TRIP W1 BKR
OUTPUT RELAY 3
...
OUTPUT RELAY 6
BLOCK 1
BLOCK 2
BLOCK 3
RLY2 TRIP W2 BKR
▼
S3 PHASE IOC1
PH IOC1 FUNCTION
PHASE CT INPUTS
PH IOC1 PKP
PH IOC1 DELAY
OUTPUT RELAY 3
...
OUTPUT RELAY 6
BLOCK 1
BLOCK 2
BLOCK 3
RLY1 TRIP W1 BKR
RLY2 TRIP W2 BKR
▼
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S3 NEGATIVE SEQ TOC1
NEG SEQ TOC1 FUNC
PHASE CT INPUTS
PKP
CURVE
OUTPUT RELAY 3
...
OUTPUT RELAY 6
BLOCK 1
BLOCK 2
BLOCK 3
NEG SEQ TOC1
NEG SEQ TOC1
NEG SEQ TOC1 TDM
NEG SEQ TOC1 RESET
RLY1 TRIP W1 BKR
RLY2 TRIP W2 BKR
▼