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GE P645

GE P645
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2.5 VTS LOGIC
V01224
All Poles Dead
IA
VTS I> Inhibit
IB
VTS I> Inhibit
IC
VTS I> Inhibit
1
VA
VB
VC
V2
Hardcoded threshold
I2
I2>1 Current Set
Delta IA
Delta IB
Delta IC
Hardcoded threshold
Hardcoded threshold
Hardcoded threshold
Any Pole Dead
VTS Reset Mode
Manual
Auto
MCB/VTS
VTS Status
Indication
Blocking
VTS Acc Ind
&
&
1
&
&
&1
S
R
Q
1
&
S
R
Q
1
&
VTS Slow Block
VTS Fast Block
VT Fail Alarm
&1
&
&
1
S
R
Q
1
Hardcoded threshold
Hardcoded threshold
Hardcoded threshold
Note: This diagram does not show all stages . Other stages follow similar principles.
Figure 131: VTS logic (P642 with 2 single-phase VTs)
Chapter 14 - Supervision P64x
288 P64x-TM-EN-1.3

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