7SR11 & 7SR12 Performance Specification
ยฉ2017 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,โฆ 20.0 xInxW (Where In = 1A or 5A )
I
Applied current @ In = 1A 10mAโฆ5A
V
Applied voltage 10Vโฆ200V
ฮธ
Angle <87.5deg
CA
67SEF Char Angle (
ฮธ
c)
0
f
Nominal 50/60Hz
2.22.2 Operate and Reset Level
Attribute Value
P
op
Operate level
100 % P
o
, ยฑ 25 % or ยฑ 25mW
Reset level
โฅ 95 % P
op
Variation -10 ยฐC to +55 ยฐC
โค 5 %
2.22.3 Operate and Reset Time
Attribute Value
t
basic
Element basic
operate time
<50ms
Repeatability
ยฑ 1 % or ยฑ 10ms
To Next Page
Loading...
Need help?
General
