Startup Overcurrent Protection (Ansi 51) - Siemens Siprotec 7UM62 Manual

4 Technical Data
4.6

Startup Overcurrent Protection (ANSI 51)

Setting Ranges/
Resolution
Inherent Operating
Times
Dropout
Tolerances
Influencing
Variables for
Pickup
416
Pickup Current I>
Delay Times T
Pickup Times I>
Dropout Times I>
Current Threshold I>
Current Threshold I>
f ≥ 3 Hz, I/I
< 5
N
Delay Times T
Power Supply Direct Voltage in Range
0.8 ≤ U ≤ 1.15
/U
H HN
Temperature in Range
–5 °C ≤ ϑ ≤ 55 °C
amb
Frequency in Range
2 Hz ≤ f ≤ 10 Hz
Harmonics
– Up to 10 % 3rd Harmonics
– Up to 10 % 5th Harmonics
1
) With I = 5 A multiply all thresholds and increments with 5.
N
0.10 to 20.00 A (Increments 0.01 A)
0.00 to 60.00 s (Increments 0.01 s)
or ∞ (does not expire)
120 ms or higher (dep. on signal frequency)
120 ms or higher (dep. on signal frequency)
80 % or 0.05 I/In
<10 %
1 % or 10 ms
≤ 1 %
≤ 0.5 %/10 K
≤ 10 %
≤ 100 % (Considered in calculation)
≤ 100 % (Considered in calculation)
1
)
7UM62 Manual
C53000-G1176-C149-3