Siemens 7SR12 Argus - Directional SEF - Wattmetric; Reference; Operate and Reset Level; Operate and Reset Time

7SR11 & 7SR12 Performance Specification
©2017 Siemens Protection Devices Limited Chapter 3 Page 50 of 56
2.22 Directional SEF - Wattmetric
2.22.1 Reference
Parameter Value
P
o
Setting
0.05, 0.10,… 20.0 xInxW (Where In = 1A or 5A )
I
Applied current @ In = 1A 10mA…5A
V
Applied voltage 10V…200V
θ
Angle <87.5deg
CA
67SEF Char Angle ( θ c)
0
f
Nominal 50/60Hz
2.22.2 Operate and Reset Level
Attribute Value
P
op
Operate level
100 % P
o
, ± 25 % or ± 25mW
Reset level
≥ 95 % P
op
Variation -10 °C to +55 °C
≤ 5 %
2.22.3 Operate and Reset Time
Attribute Value
t
basic
Element basic
operate time
<50ms
Repeatability
± 1 % or ± 10ms