Figure 147: Loss Of Load Logic - GE MiCOM P40 Agile Technical Manual

Chapter 9 - Non-Aided Schemes
Note:
Assertion of the Any Trip DDB signal or the Inhibit LOL DDB signal will prevent LOL tripping.
The detailed Loss of Load logic diagram is shown below:
LOL Scheme
Enabled
En. On Ch1 Fail
En. On Ch2 Fail
En. All Ch Fail
En. Any Ch Fail
317
Aid 1 Chan Fail
318
Aid 2 Chan Fail
Tripping Mode
3 Pole
491
Inhibit LoL
522
Any trip
LOL Window
1365
I> LoL A
1366
I> LoL B
1367
I> LoL C
966
Zone2 AN Element
967
Zone2 BN Element
968
Zone2 CN Element
969
Zone2 AB Element
970
Zone2 BC Element
971
Zone2 CA Element

Figure 147: Loss of Load Logic

266
1
&
&
&
&
1
1
&
t
LOL
1
&
&
&
1
&
&
&
18 ms
&
S
D
Q
R
P543i/P545i
654
Loss ofLoad Trip
V02741
P54x1i-TM-EN-1