27/59 Under/Over Voltage; Reference; Operate And Reset Level; Operate And Reset Time - Siemens 7SR242 Duobias Technical Manual

2.2

27/59 Under/Over Voltage

2.2.1

Reference

Parameter
V Setting
s
hyst Hysteresis setting
t Delay setting
d
2.2.2

Operate and Reset Level

Attribute
V Operate level
op
Reset level
Repeatability
Variation
2.2.3

Operate and Reset Time

Attribute
Element basic
t
basicE
operate time
t Operate time following delay
op
Repeatability
Disengaging time
©2015 Siemens Protection Devices Limited
Overvoltage
Undervoltage
-10 °C to +55 °C
f - 3 Hz to f + 2 Hz
nom nom
Overvoltage
Undervoltage
Chapter 3) 7SR242 Duobias Performance Specification
Value
5, 5.5...200V
0, 0.1... 80.0%
0.00, 0.01...20.00, 20.50... 100, 101... 1000, 1010...
10000, 10100... 14400 s
Value
100 % Vs, 1 % or 0.25V
= (100 % - hyst) x V 1 %
op,
= (100 % + hyst) x V
op,
1 %
5 %
5 %
Value
0 to 1.1 x Vs: 73 ms 10ms
0 to 2.0 xVs: 63 ms 10ms
1.1 to 0.5 xVs: 58 ms 10ms
t + t , 1 % or 10ms
basic d
1 % or 10ms
< 80 ms
1 %
Chapter 3 Page 21 of 50