Siemens Siprotec 7UM611, Руководство пользователя

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4.25 Operating Ranges of the Protection Functions
343
7UM61 Manual
C53000-G1176-C127-3
4.25 Operating Ranges of the Protection Functions
Operational condi-
tion 0
Operational condition 1 Operational condi-
tion 0
Protection function f
≤
0 Hz 11 Hz < f/Hz
≤
40 40 Hz
≤
f/Hz
≤
69 f
≥
70 Hz
Definite-Time Overcurrent Protection
(ANSI 50,51,67) active active active active
Inverse-Time Overcurrent Protection
(ANSI 51V) inactive active active inactive
Thermal Overload Protection (ANSI 49) inactive 1) active active inactive 1)
Unbalanced Load (Negative Sequence)
Protection (ANSI 46) inactive
1)
active active inactive
1)
Underexcitation (Loss-of-Field) Protection
(ANSI 40) inactive active active inactive
Reverse Power Protection (ANSI 32R) inactive active active inactive
Forward Active Power Supervision (ANSI
32F) inactive active active inactive
Impedance Protection (ANSI 21) inactive active active inactive
Undervoltage Protection (ANSI 27) inactive
2)
active active inactive
2)
Overvoltage Protection (ANSI 59) active active active active
Frequency Protection (ANSI 81) inactive active active inactive
3)
Underfrequency protection inactive active active inactive
Overexcitation (Volt/Hertz) Protection
(ANSI 24) inactive
1)
active active inactive
1)
Rate-of-Frequency-Change Protection
df/dt (ANSI 81R) inactive active 4) active inactive
Jump of Voltage Vector inactive active
5)
active
5)
inactive
90-%-Stator Earth Fault Protection (ANSI
59N, 64G, 67G) active active active active
Sensitive Earth Fault Protection (ANSI
51GN, 64R) inactive active active inactive
100-%-Stator Earth Fault Protection with
3rd Harmonics (ANSI 27/59TN 3rd Harm.) inactive active active inactive
Motor Starting Time Supervision (ANSI
48) inactive active active inactive
Restart Inhibit for Motors (ANSI 66,
49Rotor) inactive active active inactive
Breaker Failure Protection (ANSI 50BF) inactive active active inactive
Inadvertent Energization (ANSI 50, 27) active active active active
Threshold supervision inactive active active inactive
External Trip Functions active active active active
RTD-Box active active active active
Operational Condition 1: At at least one of the measuring inputs (I
L1
, I
L2
, I
L3
, U
L1
, U
L2
U
L3
) of the device, at least
5% of the rated voltage is present so that the sampling frequency for the measured
value processing can be adjusted.
Operational Condition 0: If no suitable measured values are present, or if the frequency is below 11 Hz or above
70 Hz, the device cannot operate (operational condition 0) and no measured value
processing occurs.
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