Siemens Argus 7SR21 - Load Blinder; 21 Lb-1 P; 21 Lb-3 P; Control & Logic

7SR220 Settings Guide
Unrestricted ©2018 Siemens Protection Devices Limited Page 43 of 107
3.10.8. Load Blinder
3.10.8.1. 21LB-3P
Description Range Default
Gn 21LB-3P Angle +ve
Selects the boundary region.
5 degrees to 85 degrees 20 Degrees
Gn 21LB-3P Angle -ve
Selects the boundary region.
5 degrees to 85 degrees 20 Degrees
Gn 21LB-3P Impedance
Selects the impedance of the region.
1, 1.1,...50, 50.5, 51...100 Ohms 10 Ohms
Gn 21LB-3P VPPS
Sets the level of 21LB-3P VPPS setting
1, 1.5 ...110 V 50 V
Gn 21LB-3P INPS
Sets the level of 21LB-3P INPS setting.
0.05, 0.1 ... 0.45, 5 0.5 xI
3.10.8.2. 21LB-1P
Description Range Default
Gn 21LB-1P Angle +ve
Selects the boundary region.
5 degrees to 85 degrees 20 Degrees
Gn 21LB-1P Angle -ve
Selects the boundary region.
5 degrees to 85 degrees 20 Degrees
Gn 21LB-1P Impedance
Selects the impedance of the region.
1, 1.1,...50, 50.5, 51...100 Ohms 10 Ohms
Gn 21LB-1P VPPS
Sets the level of 21LB-1P VPPS setting
1, 1.5 ...110 V 50 V
Gn 21LB-1P IZPS
Sets the level of 21LB-1P ZNPS setting.
0.05, 0.1 ... 0.45, 5 0.5 xI
3.11. Control & Logic
3.11.1. Autoreclose Prot’n
Description Range Default
Gn 79 P/F Inst Trips
Selects which phase fault protection elements are classed as
Instantaneous elements and start an autoreclose sequence.
These will be blocked from operating during Delayed
autoreclose sequences. See autoreclose section of manual for
detail of what elements can cause only Delayed protection to
be used.
Combination of ( 51-1, 51-2, 51-3,
51-4, 50-1, 50-2, 50-3, 50-4 )
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Gn 79 E/F Inst Trips
Selects which earth fault protection elements are classed as
Instantaneous elements and start an autoreclose sequence.
These will be blocked from operating during Delayed
autoreclose sequences. See autoreclose section of manual for
detail of what elements can cause only Delayed protection to
be used.
Combination of ( 51N-1, 51N-2,
51N-3, 51N-4, 50N-1, 50N-2, 50N-
3, 50N-4, 51G-1, 51G-2, 51G-3,
51G-4, 50G-1, 50G-2, 50G-3, 50G-
4 )
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Gn 79 SEF Inst Trips
Selects which sensitive earth fault protection elements are
classed as Instantaneous elements and start an autoreclose
sequence. These will be blocked from operating during
Delayed autoreclose sequences. See autoreclose section of
manual for detail of what elements can cause only Delayed
protection to be used.
Combination of ( 51SEF-1, 51SEF-
2, 51SEF-3, 51SEF-4, 50SEF-1,
50SEF-2, 50SEF-3, 50SEF-4 )
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