9.4
SEL-749M Relay Instruction Manual Date Code 20080918
Analyzing Events
Event Reporting
=>SUM <Enter>
SEL-749M Date: 12/10/2003 Time: 22:45:18.677
MOTOR RELAY Time Source: internal
Event #: 1 Event: Overcurrent Trip
Event Date: 10/15/2004 Event Time: 22:24:00.101
Frequency (Hz) : 60.0
IA IB IC IN IG
CURRENT MAG (A) 711.1 1049.2 591.2 0.04 10.63
VAB VBC VCA
VOLTAGE MAG L-L (V) 2806 2513 1338
Winding Bearing Ambient Other
Hottest RTD(C): 123 110 45 160
Press RETURN to continue
Figure 9.1 Example Event Summary
The relay sends event summaries to all serial ports with setting AUTO := Y
each time an event triggers.
Event Type
The Event field displays the event type. Event types and the logic used to
determine event types are shown in Table 9.1.
Table 9.1 Event Types (Sheet 1 of 2)
Event Type Event Type Logic
Overload Trip (49T AND RUNNING) AND TRIP
Lockd Rotor Trip (49T AND STARTING) AND TRIP
Undercurr Trip LOSSTRIP AND TRIP
Jam Trip JAMTRIP AND TRIP
Curr Imbal Trip 46UBT AND TRIP
Overcurrent Trip 50P1T AND TRIP
Ground Flt Trip (50N1T OR 50G1T) AND TRIP
Speed Sw Trip SPDSTR AND TRIP
Overvolt Trip 59P1T AND TRIP
Underpower Trip 37PT AND TRIP
Pwr Factor Trip 55T AND TRIP
React Pwr Trip VART AND TRIP
Phase Rev Trip 47T AND TRIP
Underfreq Trip 81nT AND TRIP, 81nTP < FNOM
Overfreq Trip 81nT AND TRIP, 81nTP > FNOM
RTD Trip (WDGTRIP OR BRGTRIP OR AMBTRIP OR OTHTRIP)
AND TRIP
PTC Trip PTCTRIP AND TRIP
Start Trip Time SMTRIP AND TRIP
Remote Trip REMTRIP AND TRIP
Undervolt Trip 27P1T AND TRIP
RTD Fail Trip RTDFLT AND TRIP
Courtesy of NationalSwitchgear.com
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