Siemens Argus 7SR21 - Section 2: Protection Functions; 27;59 Phase Under;Over Voltage; Operate and Reset Level; Operate and Reset Time

7SR21 & 7SR22 Performance Specification
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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 xVs: 63 ms ± 10 ms
Undervoltage
1.1 to 0.5 xVs: 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