9.4
SEL-787 Relay
Instruction Manual
Date Code 20081022
Analyzing Events
Event Reporting
Event Type
The
Event
field displays the event type. Event types and the logic used to
determine event types are shown in
.
Currents, Voltages, and RTD Temperatures
The
Current
Mag
fields display the primary current magnitudes at the instant
the TRIP Relay Word bit asserted or the ER equation asserted. The currents
displayed are listed below:
➤
Winding Currents (
IAW
n
, IBW
n
, ICW
n
, IGW
n
{
n
= 1 and 2})
➤
Neutral Current (
IN
)
Table 9.1
Event Types
Event Type
Event Type Logic
Diff 87 Trip
(87U OR 87R) AND TRIP
REF Trip
(REF1F OR REF1P) AND TRIP
Wdg1 Ph 50 Trip
(50P11T OR 50P12T OR 50P13T OR 50P14T) AND
TRIP
Wdg1 Gnd 50 Trip
(50G11T OR 50G12T) AND TRIP
Wdg1 50Q Trip
(50Q11T OR 50Q12T) AND TRIP
Wdg2 Ph 50 Trip
(50P21T OR 50P22T OR 50P23T OR 50P24T) AND
TRIP
Wdg2 Gnd 50 Trip
(50G21T OR 50G22T) AND TRIP
Wdg2 50Q Trip
(50Q21T OR 50Q22T) AND TRIP
Neutral 50 Trip
(50N11T OR 50N12T) AND TRIP
Wdg1 Ph 51 Trip
51P1T AND TRIP
Wdg1 Gnd 51 Trip
51G1T AND TRIP
Wdg1 51Q Trip
51Q1T AND TRIP
Wdg2 Ph 51 Trip
51P2T AND TRIP
Wdg2 Gnd 51 Trip
51G2T AND TRIP
Wdg2 51Q Trip
51Q2T AND TRIP
Neutral 51 Trip
51N1T AND TRIP
PowerElemnt Trip
(3PWR1 OR 3PWR2) AND TRIP
Undervolt Trip
(27P1T OR 27P2T) AND TRIP
Overvolt Trip
(59P1T OR 59P2T OR 59Q1T OR 59Q2T) AND TRIP
Volt/Hz 24 Trip
(24D1T OR 24C2T) AND TRIP
Frequency 81 Trip
(81D1T OR 81D2T OR 81D3T OR 81D4T) AND TRIP
RTD Trip
RTDT AND TRIP
RTD Fail Trip
RTDFLT AND TRIP
Breaker Failure Trip
(BFT1 OR BFT2) AND TRIP
Remote Trip
REMTRIP AND TRIP
CommIdleLossTrip
(COMMIDLE OR COMMLOSS) AND TRIP
Trigger
Serial port
TRI
command
ER Trigger
ER Equation assertion
Trip
TRIP with no known cause
Summary of Contents for SEL-787
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