4 Technical Data
434
7UM62 Manual
C53000-G1176-C149-3
4.19
Rate-of-Frequency-Change Protection (ANSI 81R)
Setting Ranges/
Resolution
Stages, can be +df/dt> or–df/dt
4
Pickup Values df/dt
0.1 to 10 Hz/s
(Increments 0.1 Hz/s)
Delay Times T
0.00 to 60.00 s
(Increments 0.01 s)
or
∞
(does not expire)
Undervoltage Lock-Out U1>
10.0 to 125.0 V
(Increments 0.1 V)
Window Length
1 to 25 cycles
Inherent Operating
Times
Pickup Times df/dt
Approx. 150 ms to 500 ms
(dep. on window length)
Dropout Times df/dt
Approx. 150 ms to 500 ms
(dep. on window length)
Dropout
Dropout Difference
∆
f/dt
0.02 to 0.99 Hz/s (settable)
Dropout/Pickup Ratio
Approx. 1.05
Tolerances
Frequency Rise
Measuring Window < 5
Approx. 5 % or 0.15 Hz/s at U > 0.5 U
N
Measuring Window
≥
5
Approx. 3 % or 0.1 Hz/s at U > 0.5 U
N
Undervoltage Lock-Out
1 % of setting value or 0.5 V
Delay Times
1 % or 10 ms
Influencing
Variables for
Pickup
Power Supply Direct Voltage in Range
0.8
≤
U
H
/U
HN
≤
1.15
≤
1 %
Temperature in Range
–5 °C
≤ ϑ
amb
≤
55 °C
≤
0.5 %/10 K
Harmonics
– Up to 10 % 3rd Harmonics
≤
1 %
– Up to 10 % 5th Harmonics
≤
1 %
