Operating Ranges Of The Protection Functions - Siemens Siprotec 7UM62 Manual

4.34

Operating Ranges of the Protection Functions

Table 4-1 Operating Ranges of the Protection Functions
Protection function
Definite-time overcurrent prot. (50, 51, 67)
Inverse-time overcurrent protection (51V)
Thermal overload protection (49)
Unbalanced load protection (46)
Startup overcurrent protection (51)
Differential protection (87G/87T)
Earth current differential protection (87GN/TN)
Underexcitation protection (40)
Reverse power protection (32R)
Forward power supervision (32F)
Impedance protection (21)
Out–of–step protection (78)
Undervoltage protection (27)
Overvoltage protection (59)
Overfrequency protection (81/O)
Underfrequency protection (81/U)
Overexcitation protection U/f> (24)
Inverse undervoltage protection (27)
Rate-of-frequency-change protection (81R)
Jump of voltage vector
90–% Stator earth fault prot. (59N, 64G, 67G)
Sensitive earth fault protection (51GN, 64F)
100–% S/E/F with 3rd harm. (27TN, 59TN)
100–% stator earth fault protection(20 Hz)
(64G)
Rotor earth fault protection (64R)
Rotor earth fault protection (64R)
Motor starting time supervision (48)
Restart inibit for motors (66, 49
Breaker Failure Protection (50BF)
Inadvertent energization (50/27)
DC voltage protection (59N
Threshold Monitoring
External trip coupling
Temperature detection by thermoboxes
7UM62 Manual
C53000-G1176-C149-3
Operat. cond. 0
f ≤ 10 Hz
active
inactive
inactive
inactive
active
active
inactive
inactive
inactive
inactive
inactive
inactive
inactive
active
inactive
inactive
inactive
inactive
inactive
inactive
active
inactive
inactive
active
active
active
inactive
) inactive
Rotor
inactive
active
, 51N ) active
DC DC
inactive
active
active
4.34 Operating Ranges of the Protection Functions
Operational condition 1
11 Hz< f/Hz ≤ 40 40 Hz ≤ f/Hz ≤ 69
active
active
1
) active
1
) active
inactive
active
active
active
active
active
active
active
2)
active
active
active
active
1
) active
2)
active
4
active )
5
active )
active
active
active
active
active
active
active
active
active
active
active
active
active
active
Operat. cond. 0
f ≥ 70 Hz
active active
active inactive
active inactive
active inactive
inactive active
active active
active inactive
active inactive
active inactive
active inactive
active inactive
active inactive
active inactive
active active
active inactive
active inactive
1
active inactive
2
active inactive
active inactive
5
active ) inactive
active active
active inactive
active inactive
active active
active active
active active
active inactive
active inactive
active inactive
active active
active active
active inactive
active active
active active
1)
1)
2)
3)
)
)
455