Date Code 990215
Standard Event Reports and SER
12-19
SEL-351P Manual Técnico
Column
Heading
Corresponding Elements
(Relay Word Bits)
Symbol
Definition
WFC
WFC
*
Weak inFeed Conditional element
asserted.
UBB
UBB1, UBB2
1
UnBlocking Block element 1
asserted and UnBlocking Block
element 2 deasserted.
2
UnBlocking Block element 1
deasserted and UnBlocking Block
element 2 asserted.
b
UnBlocking Block element 1
asserted and UnBlocking Block
element 2 asserted.
Z3XT
Z3XT
*
Zone 3 eXTension element
asserted.
DSTR
DSTR
*
Directional carrier STarT element
asserted.
NSTR
NSTR
*
Nondirectional carrier STarT
element asserted.
STOP
STOP
*
STOP carrier element asserted.
BTX
BTX
*
Block Trip eXtension element
asserted.
TMB A 12
TMB1A, TMB2A
1
Transmit
Mirrored Bit
1 channel A
asserted and Transmit
Mirrored
Bit
2 channel A deasserted.
2
Transmit
Mirrored Bit
1 channel A
deasserted and Transmit
Mirrored
Bit
2 channel A asserted.
b
Transmit
Mirrored Bit
1 channel
A asserted and Transmit
Mirrored
Bit
2 channel A asserted.
TMB A 34
TMB3A, TMB4A
3
Transmit
Mirrored Bit
3 channel A
asserted and Transmit
Mirrored
Bit
4 channel A deasserted.
4
Transmit
Mirrored Bit
3 channel
A deasserted and Transmit
Mirrored Bit
4 channel A asserted.
b
Transmit
Mirrored Bit
3 channel
A asserted and Transmit
Mirrored
Bit
4 channel A asserted.
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