GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual page 164

6.4 A3 EVENT RECORDER
The 745 event recording feature runs continuously, capturing and storing the conditions present at the moment of occur-
rence of the last 128 events, as well as the time and date of each event. The header message for each event contains two
pieces of information: the event number (higher numbers denote more recent events) and the event date. If the event
record is clear or if the date has never been programmed, "Unavailable" is displayed instead of a date. No more than 128
events are stored at the same time.
Table 6–1: TYPES AND CAUSES OF EVENTS
PICKUP / OPERATE / DROPOUT EVENTS
Percent Differential
W3 Phase Time OC
W1 Phase Inst OC 2
W2 Neutral Time OC
W3 Neutral Inst OC 1
W1 Ground Time OC
W2 Ground Inst OC 1
W3 Ground Inst OC 2
W1 Neg Seq Time OC
W2 Neg Seq Inst OC
Frequency Decay 1
Overfrequency
W1 THD Level
W2 Harmonic Derating
W1 Current Demand
ON/OFF EVENTS
Logic Input 1
Logic Input 5
Logic Input 9
6
Logic Input 13
Virtual Input 1
Virtual Input 5
Virtual Input 9
Virtual Input 13
Output Relay 1
Output Relay 5
Self-Test Relay
Virtual Output 4
Setpoint Group 3
Simulation Prefault
Front Panel Reset
Control Power
ERROR! EVENTS
Logic Input Power
Real-Time Clock
DSP Processor
Ambnt temperature
The recorded event displayed for Logic inputs, Virtual Inputs, and Relay outputs will show the programmed name of
the input/output.
NOTE
6-16
Courtesy of NationalSwitchgear.com
Inst Differential
W1 Phase Inst OC 1
W2 Phase Inst OC 2
W3 Neutral Time OC
W1 Neutral Inst OC 2
W2 Ground Time OC
W3 Ground Inst OC 1
W1 Restd Gnd Fault
W2 Neg Seq Time OC
W3 Neg Seq Inst OC
Frequency Decay 2
5th Harmonic Level
W2 THD Level
W3 Harmonic Derating
W2 Current Demand
Logic Input 2
Logic Input 6
Logic Input 10
Logic Input 14
Virtual Input 2
Virtual Input 6
Virtual Input 10
Virtual Input 14
Output Relay 2
Output Relay 6
Virtual Output 1
Virtual Output 5
Setpoint Group 4
Simulation Fault
Comm Port Reset
Aging factor Limit
Analog Output Power
Emulation Software
Bad Xfmr Settings
745 Transformer Management Relay
W1 Phase Time OC
W2 Phase Inst OC 1
W3 Phase Inst OC 2
W1 Neutral Inst OC 1
W2 Neutral Inst OC 2
W3 Ground Time OC
W1 Ground Inst OC 2
W2 Restd Gnd Fault
W3 Neg Seq Time OC
Underfrequency 1
Frequency Decay 3
Volts-Per-Hertz 1
W3 THD Level
Analog Level 1
W3 Current Demand
Logic Input 3
Logic Input 7
Logic Input 11
Logic Input 15
Virtual Input 3
Virtual Input 7
Virtual Input 11
Virtual Input 15
Output Relay 3
Output Relay 7
Virtual Output 2
Setpoint Group 1
Test Mode
Simulation Playback
Manual Trace Trigger
Ambient Temperature
Unit Not Calibrated
Int. Temperature
IRIG-B Signal
6 ACTUAL VALUES
W2 Phase Time OC
W3 Phase Inst OC 1
W1 Neutral Time OC
W2 Neutral Inst OC 1
W3 Neutral Inst OC 2
W1 Ground Inst OC 1
W2 Ground Inst OC 2
W3 Restd Gnd Fault
W1 Neg Seq Inst OC
Underfrequency 2
Frequency Decay 4
Volts-Per-Hertz 2
W1 Harmonic Derating
Analog Level 2
Transformer Overload
Logic Input 4
Logic Input 8
Logic Input 12
Logic Input 16
Virtual Input 4
Virtual Input 8
Virtual Input 12
Virtual Input 16
Output Relay 4
Output Relay 8
Virtual Output 3
Setpoint Group 2
Simulation Disabled
Logic Input Reset
Auto Trace Trigger
Tap Changer failure
EEPROM Memory
FlexLogic Equation
Setpt Access Denied
GE Multilin