Ct Supervision; Broken Conductor - Siemens Argus 7SR21 Technical Manual

Description
Gn 60VTS Vpps
Level below which there is a possible 3 phase VT fuse failure
Gn 60VTS Ipps Load
Level current must be above before 3 phase VTS will be
issued
Gn 60VTS Ipps Fault
Level above which 3 phase fault is assumed so VTS inhibited
Gn 60VTS Delay
Sets operate delay time
Gn 60VTF-Bus Element
Selects whether the Bus VT Fail element is enabled. Element
based on voltages and circuit breaker position
Gn 60VTF-Bus Delay
Sets operate delay time
3.10.3.

CT Supervision

Description
Gn 60CTS Element
Selects whether the CT supervision element is enabled (NPS
current in the absence of NPS voltage)
Gn 60CTS Inps
Arm if NPS Current (Inps) is above this level
Gn 60CTS Vnps
Inhibit if NPS Voltage (Vnps) is above this level
Gn 60CTS Delay
CTS Operate delay
Gn 60CTS-I Element
Gn 60CTS-I Setting
Gn 60CTS-I Delay
3.10.4.

Broken Conductor

Description
Gn 46BC U/C Guard Setting
Gn 46BC Element
Selects whether the definite time broken conductor element is
enabled
Gn 46BC Setting
NPS Current to PPS Current ratio
Gn 46BC Delay
Sets operate delay time
Gn 46BC U/C Guarded
Unrestricted ©2018 Siemens Protection Devices Limited
Range
1, 2 ... 109, 110
0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35,
0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7,
0.75, 0.8, 0.85, 0.9, 0.95, 1
0.05, 0.1 ... 19.95, 20
0.03, 0.04 ... 14300, 14400
Enabled, Disabled
0, 0.1 ... 99.9, 100
Range
Disabled, Enabled
0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35,
0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7,
0.75, 0.8, 0.85, 0.9, 0.95, 1
7, 8 ... 109, 110
0.03, 0.04 ... 14300, 14400
Disabled, Enabled
0.05, 0.1 ... 1.95, 2
0.03, 0.04 ... 14300, 14400
Range
0.05, 0.1 ... 4.95, 5
Disabled, Enabled
20, 21 ... 99, 100
0.03, 0.04 ... 14300, 14400
No, Yes
7SR220 Settings Guide
Default
15 V
0.1 xIn
10 xIn
10 s
Disabled
2s
Default
Disabled
0.1 xIn
10 V
10 s
Disabled
0.05 xIn
10 s
Default
0.25 xIn
Disabled
20 %
20 s
No
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