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345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
A4 TARGET MESSAGES
CHAPTER 4: ACTUAL VALUES
•
The PKP messages will appear on the relay display as long as their respective flags are
active. The messages will disappear from the display, when either the protection
element drops out before operation, such as when the condition clears before
reaching operation, or when the protection element operates.
•
The OP and BKR Status messages will appear on the relay display, when the respective
element operates, with the element function set to “TRIP”, or “LATCHED ALARM”. The
message will stay on the display after the condition clears, and will disappear upon
Reset command. If the element function is selected to “ALARM”, or “CONTROL”, the
message will disappear from the display, when the condition causing operation clears.
•
The Breaker Open and Breaker Close messages will appear on the display and stay for
5 seconds only, unless the reset command is initiated, or the element changes its
state. For example, if the breaker is detected “Open”, the message “Breaker Open OK”
will appear on the display and will stay for 5 seconds, unless the breaker status
changes to “Close”. If the breaker status changes to "Close" within 5 seconds after the
breaker has been detected open, the message “Breaker Open OK” will disappear, and
the message “Breaker Close OK” will appear and stay for 5 seconds.
•
The Contact Input ON/OFF, Virtual Input ON/OFF, and Remote Input ON/OFF messages
will not appear as target messages upon change of state. The state change, however,
will be logged in the Event recorder.
0xF040
Ntrl IOC1 Block
0xF080
Gnd IOC1 Block
0xF0C0
Ph TOC1 Block
0xF100
Ntrl TOC1 Block
0xF140
Gnd TOC1 Block
0xF180
Ph IOC2 Block
0xF1C0
Ntrl IOC2 Block
0xF200
Gnd IOC2 Block
0xF240
Ph TOC2 Block
0xF280
Ntrl TOC2 Block
0xF2C0
Gnd TOC2 Block
0xF300
SGnd TOC1 Block
0xF640
SGnd IOC1 Block
0xF680
SGnd IOC2 Block
0xF6C0
NegSeq IOC Block
0xF700
Pcnt DIFF Block
0xF740
RGF1 Block
0xF780
RGF2 Block
0xF7C0
Inst DIFF Block
0xF800
NSeq TOC1 Block
0xF840
NSeq TOC2 Block
0xF9C0
SGnd TOC2 Block
0xFB00
Trip BKR1 Block
0xFB40
Trip BKR2 Block
0xFB80
2nd Hmnc Diff Blk
0xFBC0
5th Hmnc Diff Blk
Code
Type
Definition