Siemens 7SR51 - 10.2 21 LB Load Blinder

21LB Load Blinder
3 Phase Load Blinder (21LB‑3P)
Reference
Parameter Value
I
2 set
I
2
level setting 0.05 ⋅ I
rated
to 5 ⋅ I
rated
V
2 set
V
2
level setting 1 V to 110 V
φ+ set Angle +ve setting 5° to 85°
φ- set Angle –ve setting 5° to 85°
Z
set
Impedance setting 1 Ω to 100 Ω
Operate and Reset Level
Attribute Value
V
op
V
1
operate level V
set
: ± 2 % or ± 0.5 V
V
1
reset level 110 % V
1 op
: ± 5 % V
rated
I
op
I
2
operate level I
set
: ± 5 % or ± 1 % I
rated
Impedance Z
set
: ± 5 % or ± 0.1 Ω
Repeatability ± 1 %
Operate Angle
Attribute
Value
φ
op
Operating angle Forward φ+ set ± 5° to
φ- set ± 5°
Reverse (180° - φ+ set) ± 5° to
(180° + φ- set) ± 5°
Single Phase Load Blinder (21LB‑1P)
Reference
Parameter
Value
I
0 set
I
0
level setting 0.05 ⋅ I
rated
to 5 ⋅ I
rated
V
1 set
V
1
level setting 1 V to 110 V
φ+ set Angle +ve setting 5° to 85°
φ- set Angle –ve setting 5° to 85°
Z
set
Impedance setting 1 Ω to 100 Ω
Operate and Reset Level
Attribute
Value
V
op
V
1
operate level V
set
: ± 2 % or ± 0.5 V
V
1
reset level 110 % V
1 op
: ± 5 % V
rated
I
op
I
0
operate level I
set
: ± 5 % or ± 1 % I
rated
Impedance Z
set
: ± 5 % or ± 0.1 Ω
Repeatability ± 1 %
10.2
10.2.1
10.2.2
Technical Data
10.2 21LB Load Blinder
504 Reyrolle 7SR5, Overcurrent Protection Device, Device Manual
C53000-G7040-C014-1, Edition 11.2019