GE 745 TRANSFORMER MANAGEMENT RELAY Instruction Manual page 170

6.6 TARGET MESSAGES
The bottom line of the display (i.e., <CAUSE>) will be the name of the element that has been activated. Follow-
ing are the elements available on the 745 (and which may appear in an active target display).
Table 6–2: 745 PROTECTION ELEMENTS
Percent Differentl
W3 Phase Time OC
W1 Phase Inst OC 2
W2 Ntrl Time OC
W3 Ntrl Inst OC 1
W1 Gnd Time OC
W2 Gnd Inst OC 1
W3 Gnd Inst OC 2
W1 Neg Seq Time OC
W2 Neg Seq Inst OC
Freq Decay Rate 1
Overfrequency
W1 THD Level
W2 Harmonic Derating
W1 Current Demand
Logic Input 1
Logic Input 5
Logic Input 9
Logic Input 13
Virtual Input 1
Virtual Input 5
Virtual Input 9
Virtual Input 13
The recorded event displayed for Logic inputs and Virtual Inputs will show the programmed name of the input/
6
output. An active target display may also be generated as a result of a self-test error. When this occurs, the tar-
get message will look like this:
S SELF-TEST ERROR:
S <ERROR>
<ERROR> in the display will be one of the following:
Logic Power Out
Real-Time Clock
Flexlogic Eqn
Access Denied
IRIG-B Signal
For more detail about these errors, refer to Section 6.7: SELF-TEST ERRORS.
As well, there is an additional message that may appear as a target message. It looks like this:
S SETPOINTS HAVE NOT
S BEEN PROGRAMMED!
This message will be placed in the target message queue whenever S1 745 SETUP/INSTALLATION/745 SETPOINTS
is set to Not Programmed. This serves as a warning that the relay has not been programmed for the installation
and is therefore not in the in-service state.
6-20
Inst Differential W1 Phase Time OC
W1 Phase Inst OC 1 W2 Phase Inst OC 1
W2 Phase Inst OC 2 W3 Phase Inst OC 2
W3 Ntrl Time OC W1 Ntrl Inst OC 1
W1 Ntrl Inst OC 2 W2 Ntrl Inst OC 2
W2 Gnd Time OC W3 Gnd Time OC
W3 Gnd Inst OC 1 W1 Gnd Inst OC 2
W1 Rest Gnd Fault W2 Rest Gnd Fault
W2 Neg Seq Time OC W3 Neg Seq Time OC
W3 Neg Seq Inst OC Underfrequency 1
Freq Decay Rate 2 Freq Decay Rate 3
5th Harmonic Level Volts-per-hertz 1
W2 THD Level W3 THD Level
W3 Harmonic Derating Analog Level 1
W2 Current Demand W3 Current Demand
Logic Input 2 Logic Input 3
Logic Input 6 Logic Input 7
Logic Input 10 Logic Input 11
Logic Input 14 Logic Input 15
Virtual Input 2 Virtual Input 3
Virtual Input 6 Virtual Input 7
Virtual Input 10 Virtual Input 11
Virtual Input 14 Virtual Input 15
Analog Output
Battery
DSP Processor
Not Calibrated
745 Transformer Management Relay
W2 Phase Time OC
W3 Phase Inst OC 1
W1 Ntrl Time OC
W2 Ntrl Inst OC 1
W3 Ntrl Inst OC 2
W1 Gnd Inst OC 1
W2 Gnd Inst OC 2
W3 Rest Gnd Fault
W1 Neg Seq Inst OC
Underfrequency 2
Freq Decay Rate 4
Volts-per-hertz 2
W1 Harmonic Derating
Analog Level 2
Xformer 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
Emulation Software
Bad Xfmr Settings
EEPROM Memory
Int Temperature
6 ACTUAL VALUES
GE Power Management