Siemens 7SR224 - Section 2: Protection Functions; 27;59 Under;Over Voltage; Reference; Operate and Reset Level

7SR224 Argus Performance Specification
Section 2: Protection Functions
2.1 27/59 Under/Over Voltage
2.1.2 Reference
Parameter Value
V
s
Setting 5, 5.5…200V
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 ±0.25V
Overvoltage
= (100 % - hyst) x V
op,
± 1 % or 0.25V
Reset level
Undervoltage
= (100 % + hyst) x V
op,
± 1 % or 0.25V
Repeatability
± 1 %
-10 °C to +55 °C
≤ 5 %
Variation
f
nom
- 3 Hz to f
nom
+ 2 Hz
≤ 5 %
2.1.4 Operate and Reset Time
Attribute Value
0 to 1.1 x Vs: 73 ms ± 10ms
Overvoltage
0 to 2.0 xVs: 63 ms ± 10ms
Element basic
operate time.
Standard &
LOV models
Undervoltage
1.1 to 0.5 xVs: 58 ms ± 10ms
0 to 1.1 x Vs: 81 ms ± 10ms
Overvoltage
0 to 2.0 xVs: 71 ms ± 10ms
t
basicE
Element basic
operate time.
Single-Triple
model only
Undervoltage
1.1 to 0.5 xVs: 64 ms ± 10ms
t
op
Operate time following delay
t
basic
+ t
d
, ± 1 % or ± 10ms
Repeatability
± 1 % or ± 10ms
Disengaging time < 80 ms
©2010 Siemens Protection Devices Limited Chapter 3 Page 16 of 49