Vts Logic; Figure 246: Vts Logic - GE MiCOM P40 Technical Manual

Chapter 17 - Supervision
2.5

VTS LOGIC

All Poles Dead
IA
VTS I> Inhibit
IB
VTS I> Inhibit
IC
VTS I> Inhibit
VA
Hardcoded threshold
VB
Hardcoded threshold
VC
Hardcoded threshold
Delta IA
Hardcoded threshold
Delta IB
Hardcoded threshold
Delta IC
Hardcoded threshold
V2
Hardcoded threshold
I2
I2>1 Current Set
Any Voltage dependent
function
VTS Reset Mode
Manual
1
Auto
MCB/VTS
VTS Status
Indication
Blocking
Any Pole Dead
240ms
VTS Acc Ind
VT Fast Block
All Poles Dead

Figure 246: VTS logic

450
240ms
&
1
1
1 &
& S
Q
R
1
1
&
& S
R
&
&
&
5
Cycle
1½
½ Cycle
Cycle
&
½
Cycle
VTS Time Delay
S
Q
R
&
Q
1
&
20ms
1
1
&
VTS Slow Block
1 &
VTS Fast Block
1
S
VT Fail Alarm
Q
R
Block Distance
V01261
P446SV-TM-EN-1
P446SV