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J.12
SEL-787 Relay
Instruction Manual
Date Code 20081022
Relay Word Bits
Definitions
TSOK
Assert if current time source accuracy is sufficient for synchronized phasor measurements.
25
TUTC1
Offset hours from UTC time, binary, add 1 if asserted.
106
TUTC2
Offset hours from UTC time, binary, add 2 if asserted.
106
TUTC4
Offset hours from UTC time, binary, add 4 if asserted.
106
TUTC8
Offset hours from UTC time, binary, add 8 if asserted.
106
TUTCH
Offset half-hour from UTC time, binary, add 0.5 if asserted.
106
TUTCS
Offset hours sign from UTC time, subtract the UTC offset if TUTCS is asserted; otherwise,
add.
106
ULCL1
Unlatch close conditions SEL
OGIC
control equation CL1 state.
35
ULCL2
Unlatch close conditions SEL
OGIC
control equation CL2 state.
35
ULTRIP1
Unlatch (auto reset) trip from SEL
OGIC
control equation TR1.
35
ULTRIP2
Unlatch (auto reset) trip from SEL
OGIC
control equation TR2.
35
ULTRXFMR
Unlatch (auto reset) trip from SEL
OGIC
control equation TRXFMR.
35
VB
nnn
Virtual Bits used for Incoming GOOSE messages (
nnn
= 1 through 128).
75-90
WARNING
Relay Word WARNING.
25
a
Reserved.
b
Harmonic restraint enabled.
Table J.2
Relay Word Bit Definitions for the SEL-787
(Sheet 9 of 9)
Bit
Definition
Row
Summary of Contents for SEL-787
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