6–46
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
S3 PROTECTION
CHAPTER 6: SETPOINTS
Figure 6-21: Instantaneous Differential Protection logic diagram
SETPOINT
SETPOINT
INST
DIFF
FUNCTION
:
Disabled
=
0
Latched
Alarm
INST
DIFFERENTIAL
PICKUP
:
AND
Operate Output Relay
1
(W1
BKR
TRIP
)
LED:
TRIP
Alarm
OR
AND
Trip
AND
SETPOINT
BLOCK
1:
Of
f=
0
BLOCK
2:
Of
f=
0
BLOCK
3:
Of
f=
0
OR
OR
Trip (T
o Breaker Failure
)
Phase
A
Dif
fcurrent
(IAd
)
Phase B
Dif
fcurrent
(IBd)
Phase C
Dif
fcurrent
(ICd)
Phase Differential
Currents
INST
DIFF
PKP
Message
LED:
PICKUP
IAd
=
Pickup
IBd
=
Pickup
ICd
=
Pickup
RUN
RUN
RUN
INST
DIFF
OP
Event Recorder
OR
LED:
ALARM
RESET
Command
AND
S
R
LA
TCH
Operate Output Relay
2
(W1
BKR
TRIP
)
SETPOINT
Do Not Operate, Operate
OUTPUT
RELA
Y X
INST
DIFF
PKP
INST
DIFF
OP
897804A1.cdr
Содержание 345
Страница 28: ...1 20 345 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL SPECIFICATIONS CHAPTER 1 INTRODUCTION ...
Страница 89: ...CHAPTER 3 INTERFACES SOFTWARE SETUP 345 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL 3 35 ...
Страница 92: ...3 38 345 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL SOFTWARE SETUP CHAPTER 3 INTERFACES ...
Страница 110: ...4 18 345 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL A4 TARGET MESSAGES CHAPTER 4 ACTUAL VALUES ...
Страница 116: ...5 6 345 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL QUICK SETUP SETTINGS CHAPTER 5 QUICK SETUP FRONT CONTROL PANEL ...
Страница 246: ...7 20 345 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL GENERAL MAINTENANCE CHAPTER 7 MAINTENANCE ...
Страница 254: ...A 8 345 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL CHANGE NOTES ...