7SR21 & 7SR22 Performance Specification
Unrestricted © 2013 Siemens Protection Devices Limited
Page 21 of 68
Section 2: Protection Functions
2.1
27/59 Phase Under/Over Voltage
2.1.2 Reference
Parameter
Value
V
s
Setting
5, 5.5…199.5, 200 V
hyst
Hysteresis setting
0, 0.1… 80.0 %
t
d
Delay setting
0.00, 0.01…20.00, 20.50… 100, 101… 1000, 1010…
10000, 10100… 14400 s
2.1.3 Operate and Reset Level
Attribute
Value
V
op
Operate level
100 %
Vs
,
±
1 % or
±
0.25 V
Reset level
Overvoltage
= (100 % -
hyst
)
x V
op,
±
1 % or
±
0.25 V
Undervoltage
= (100 % +
hyst
)
x V
op,
±
1 % or
±
0.25 V
Repeatability
±
1 %
Variation
-10 °C to +55 °C
£
5 %
f
nom
- 3 Hz to
f
nom
+ 2 Hz
£
5 %
2.1.4 Operate and Reset Time
Attribute
Value
t
basicE
Element basic
operate time
Overvoltage
Switched from 0 to 1.1 x
Vs
: 73 ms
±
10 ms
Switched from 0 to 2.0 x
Vs
: 63 ms
±
10 ms
Undervoltage
1.1 to 0.5 x
Vs
: 58 ms
±
10 ms
t
op
Operate time following delay
t
basic
+
t
d
,
±
1 % or
±
10 ms
Repeatability
±
1 % or
±
10 ms
Disengaging time
< 80 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 ...
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