Table 132. Out-of-step protection OOSRPSB
Characteristic Value
Impedance reach Depending on the frequency of the measured current and voltage: f
n
±2
Hz
±3.0% of the reach value or ±0.2% of U
n
/(√3 ⋅ I
n
)
Reset time ±1.0% of the set value or ±40 ms
Operate time accuracy ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5...
Table 133. Out-of-step protection (OOSRPSB) main settings
Parameter
Function Value (Range) Step
Oos operate mode OOSRPSB 1 = Way in
2 = Way out
3 = Adaptive
-
Forward reach OOSRPSB 0.00...6000.00 Ω 0.01
Reverse reach OOSRPSB 0.00...6000.00 Ω 0.01
Inner blinder R OOSRPSB 1.00...6000.00 Ω 0.01
Outer blinder R OOSRPSB 1.01...10000.00 Ω 0.01
Impedance angle OOSRPSB 10.0...90.0° 0.1
Swing time OOSRPSB 20...300000 ms 10
Zone 1 reach OOSRPSB 1...100% 1
Operate delay time OOSRPSB 20...60000 ms 10
Table 134. Negative-sequence overcurrent protection for machines (MNSPTOC)
Characteristic
Value
Operation accuracy Depending on the frequency of the measured current: f
n
±1.5% of the set value or ±0.002 x I
n
Start time
1)2)
Minimum Typical Maximum
I
Fault
= 2.0 × set
Start value
23 25 ms 28 ms
Reset time Typically 40 ms
Reset ratio Typically 0.96
Retardation time <35 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in inverse time mode
±5.0% of the theoretical value or ±20 ms
3)
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1) Negative-sequence current before = 0.0, f
n
= 50 Hz, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
3)
Start value
multiples in range of 1.10...5.00
1MRS759144 A
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