Figure 5.2-1 Logic Diagram: Vt Supervision Function (60Vts) - Siemens 7SR21 Manual

60VTS Element
Enabled
Disabled
60VTS Inhibit
1 or 2 Phase Fail
60VTS
Component
V0
VL1
Phase
V1
VL2 Seq.
Filter
V2
VL3
NPS/ZPS
I0
IL1
Phase
I1
IL2 Seq.
Filter
I2
IL3
I1
I1
V1
External Trigger
60VTS Ext_Trig
External Reset
60VTS Ext_Reset

Figure 5.2-1 Logic Diagram: VT Supervision Function (60VTS)

©2010 Siemens Protection Devices Limited
V Setting
V
>
I Setting
I
<
3 Phase Fail
Ipps Load
>
Ipps
<
Vpps Setting
<
7SR21 & 7SR22 Argus Description of Operation
&
&
> 1
&
&
60VTS Delay
&
S
Q
60VTS Operated
R
>1
Chapter 1 Page 62 of 71