7SR210 & 7SR220 Description of Operation
Unrestricted ©2018 Siemens Protection Devices Limited
Page 79 of 94
Enabled
Disabled
&
60VTS Element
&
&
> 1
60VTS Ext_Trig
&
S
R
Q
>1
60VTS Operated
&
60VTS Inhibit
1 or 2 Phase Fail
V
V Setting
>
I
I Setting
<
V1
Vpps Setting
<
I1
Ipps
<
3 Phase Fail
I1
Ipps Load
>
60VTS Ext_Reset
60VTS Delay
NPS/ZPS
60VTS
Component
VL1
VL2
VL3
Phase
Seq.
Filter
IL1
IL2
IL3
Phase
Seq.
Filter
V2
V0
I2
I0
V1
I1
60VTS Inhibit
60VTS Pick-Up
60VTS Operated
Figure 5.2-1 Logic Diagram: VT Supervision Function (60VTS)
5.3
Busbar VT Fail (60VTF-Bus) – 7SR22
When the optional synchronising function is fitted, the synchronising voltage transformer is utilised to provide an
additional monitoring function to check the validity of the measured line and busbar voltages. When the circuit
breaker is closed, both voltages should be either Live or Dead. If the Bus voltage indicates that the VT is Dead
but the corresponding Line voltage is Live, this raises the Bus VT Fail output. A time delay setting is provided to
avoid spurious operations during transient switching conditions. Additionally, this output can be enabled by a
setting,
79 LO Bus VT Fail
, to apply a Lockout signal to the autoreclose function so that a sequence will not be
attempted after a trip occurs if it is known that the voltage measurement is not reliable. A similar setting is
available,
79 LO Line VT Fail,
which when Enabled will provide a Lockout for a Line VT failure detected by the
60VTS
function.
Summary of Contents for Argus 7SR21
Page 1: ...Energy Management 7SR21 7SR22 Argus Overcurrent Relay Reyrolle Protection Devices ...
Page 2: ......
Page 4: ...Contents 7SR11 and 7SR12 Page 2 of 2 2018 Siemens Protection Devices Limited ...
Page 185: ...7SR210 Settings Guide Unrestricted 2018 Siemens Protection Devices Limited Page 61 of 61 ...
Page 277: ...7SR220 Settings Guide Unrestricted Page 72 of 107 2013 Siemens Protection Devices Limited ...
Page 382: ...7SR220 Technical Manual Chapter 4 Page 2 of 96 2017 Siemens Protection Devices Limited ...
Page 386: ...7SR220 Technical Manual Chapter 4 Page 6 of 96 2017 Siemens Protection Devices Limited ...
Page 398: ...7SR220 Technical Manual Chapter 4 Page 18 of 96 2017 Siemens Protection Devices Limited ...
Page 414: ...7SR220 Technical Manual Chapter 4 Page 34 of 96 2017 Siemens Protection Devices Limited ...
Page 466: ...7SR220 Technical Manual Chapter 4 Page 86 of 96 2017 Siemens Protection Devices Limited ...
Page 468: ...7SR220 Technical Manual Chapter 4 Page 88 of 96 2017 Siemens Protection Devices Limited ...
Page 470: ...7SR220 Technical Manual Chapter 4 Page 90 of 96 2017 Siemens Protection Devices Limited ...
Page 472: ...7SR220 Technical Manual Chapter 4 Page 92 of 96 2017 Siemens Protection Devices Limited ...
Page 643: ...Unrestricted ...