7SR11 & 7SR12 Description Of Operation
©2017 Siemens Protection Devices Limited Chapter 1 Page 77 of 88
&
60CTS Delay
VL1
VL2
VL3
NPS
Filter
V2
60CTS Vnps
<
IL1
IL2
IL3
NPS
Filter
I2
60CTS Inps
>
&
Inhibit 60CTS
60CTS Element
Enabled
Disabled
&
60CTS Operated
Figure 5-4 Logic Diagram: CT Supervision Function (60CTS) – 7SR12
5.4 Broken Conductor (46BC)
The element calculates the ratio of NPS to PPS currents. Where the NPS:PPS current ratio is above
46BC
Setting
an output is given after the
46BC Delay
.
The Broken Conductor function can be inhibited from
Inhibit 46BC
A binary or virtual input.
46BC U/I Guard
A minimum load current
Inhibit 46BC
46BC
46BC Element
Enabled
Disabled
c
&
46BC Setting
IL1
IL2
IL3
NPS
Filter
I2
IL1
IL2
IL3
PPS
Filter
I1
46BC Delay
46BC U/C Guard
Setting
46BC U/C
Guarded
Yes
No
C
IL1
IL2
IL3
Figure 5-5 Logic Diagram: Broken Conductor Function (46BC)
Summary of Contents for Argus 7SR11
Page 1: ...Energy Management 7SR11 7SR12 Argus Overcurrent Relay Reyrolle Protection Devices ...
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Page 4: ...7SR11 7SR12 Argus Contents 2015 Siemens Protection Devices Limited Page 2 of 2 ...
Page 170: ...7SR120 Technical Manual Chapter 4 Page 2 of 84 2017 Siemens Protection Devices Limited ...
Page 174: ...7SR120 Technical Manual Chapter 4 Page 6 of 84 2017 Siemens Protection Devices Limited ...
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Page 246: ...7SR120 Technical Manual Chapter 4 Page 78 of 84 2017 Siemens Protection Devices Limited ...
Page 254: ...7SR11 7SR12 Installation Guide Chapter 5 Page 2 of 32 2017 Siemens Protection Devices Limited ...
Page 358: ...7SR11 7SR12 Applications Guide Page 2 of 48 2017 Siemens Protection Devices Limited ...
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