7SR21 & 7SR22 Performance Specification
Unrestricted © 2013 Siemens Protection Devices Limited
Page 67 of 68
4.1.3 Line and Bus Undervoltage Elements
Attribute
Value
V
line
Operate level
100 %
Vsl
,
±
1 % V
n
Reset level
£
V
line
+ 4 %
V
bus
Operate level
100 %
Vsb
,
±
1 % V
n
Reset level
£
V
bus
+ 4 %
Repeatability
±
1 %
Variation
-10 °C to +55 °C
£
5 %
f
nom
± 5 %
£
1 %
4.1.4 Voltage Difference
Attribute
Value
V
op
Operate level
100 %
V
diff
,
±
1 % V
n
Reset level
³
V
op
– 4 %
Repeatability
±
2 %
4.1.5 General Autoreclose Timers
Attribute
Value
t
basic
Element basic operate time
20 ms ± 20 ms
t
op
t
dlc
/t
dbc
/t
cw
t
op
+ t
basic
± 1%
Repeatability
± 20 ms
4.1.6 CS/SS/COZ Line and Bus Phase Angle Difference
Attribute
Value
q
op
Operate angle
q
diff
, ± 1 º
Reset angle
q
op
, ± 1 º
Repeatability
±
1 º
4.1.7 CS/SS/COZ Slip Frequency
Attribute
Value
f
op
Operate frequency
f
slip
, ± 10 mHz
Reset frequency
f
op
, - 10 mHz
Repeatability
±
10 mHz
4.1.8 CS/SS Timer
Attribute
Value
t
op
Operate time
± 1 º, + 20 ms
Note: minimum synchronising time following restoration of voltage from a dead condition is 320 ms.
Summary of Contents for Argus 7SR21
Page 1: ...Energy Management 7SR21 7SR22 Argus Overcurrent Relay Reyrolle Protection Devices ...
Page 2: ......
Page 4: ...Contents 7SR11 and 7SR12 Page 2 of 2 2018 Siemens Protection Devices Limited ...
Page 185: ...7SR210 Settings Guide Unrestricted 2018 Siemens Protection Devices Limited Page 61 of 61 ...
Page 277: ...7SR220 Settings Guide Unrestricted Page 72 of 107 2013 Siemens Protection Devices Limited ...
Page 382: ...7SR220 Technical Manual Chapter 4 Page 2 of 96 2017 Siemens Protection Devices Limited ...
Page 386: ...7SR220 Technical Manual Chapter 4 Page 6 of 96 2017 Siemens Protection Devices Limited ...
Page 398: ...7SR220 Technical Manual Chapter 4 Page 18 of 96 2017 Siemens Protection Devices Limited ...
Page 414: ...7SR220 Technical Manual Chapter 4 Page 34 of 96 2017 Siemens Protection Devices Limited ...
Page 466: ...7SR220 Technical Manual Chapter 4 Page 86 of 96 2017 Siemens Protection Devices Limited ...
Page 468: ...7SR220 Technical Manual Chapter 4 Page 88 of 96 2017 Siemens Protection Devices Limited ...
Page 470: ...7SR220 Technical Manual Chapter 4 Page 90 of 96 2017 Siemens Protection Devices Limited ...
Page 472: ...7SR220 Technical Manual Chapter 4 Page 92 of 96 2017 Siemens Protection Devices Limited ...
Page 643: ...Unrestricted ...