17
SME2-IS - Manual - 06- 2021
TECHNICAL CHARACTERISTICS
100 ...1000 s (step 1 s)
Maximum frequency difference UG>def 10 ...200 mHz (step 1 mHz)
Reset delay tUG>RES 0.00 ...9.99 s (step 0.01 s)
10.0 .. 100.0 s (step 0.1 s)
Tripping time tUG> 0.05 ...9.99 s (step 0.01 s)
10.0 .. 99.9 s (step 0.1 s)
100 ...1000 s (step 1 s)
Maximum active return power P-> -1.00 ...-0.01 Pn (step 0.01 Pn)
Reset delay tP->RES 0.00 ...9.99 s (step 0.01 s)
10.0 .. 100.0 s (step 0.1 s)
Tripping time tP-> 0.05 ...9.99 s (step 0.01 s)
10.0 .. 99.9 s (step 0.1 s)
100 ...1000 s (step 1 s)
Maximum variation in consecutive periods UDT> 50 ...7000 us (step 10 us)
Calculated means of f and df
Number of mean frequency semi-periods 1 ... 32 (step 1)
Number of rst scale df/dt calculation semi-periods (0.1÷0.9 Hz/s) 0 ... 20 (step 1)
Number of second scale df/dt calculation semi-periods (1÷4.9 Hz/s) 0 ... 20 (step 1)
Number of third scale df/dt calculation semi-periods (5÷10 Hz/s) 0 ... 20 (step 1)
Number of rst scale df/dt calculation means (0.1÷0.9 Hz/s) Means (1, 2, 4, 8, 10, 12, 14, 16, 18, 20)
Number of second scale df/dt calculation means (1÷4.9 Hz/s) Means (1, 2, 4, 8, 10, 12, 14, 16, 18, 20)
Number of third scale df/dt calculation means (5÷10 Hz/s) Means (1, 2, 4, 8, 10, 12, 14, 16, 18, 20)
Threshold EAC1
Type f>/f<1a Maximum/Minimum
Threshold f>/f<1a 45.00 ... 55.00 Hz (step 0.01 Hz)
Tripping time tf>/f<1a 0.00 ... 60.00 s (step 0.01 s)
Type f>/f<1b Maximum/Minimum
Threshold f>/f<1b 45.00 ... 55.00 Hz (step 0.01 Hz)
Tripping time tf>/f<1b 0.00 ... 60.00 s (step 0.01 s)
Threshold df>1 0.1 ... 10.00 Hz/s (step 0.1 Hz/s)
Tripping time tdf>1 0.00 ... 60.00 s (step 0.01 s)
Threshold EAC2
Type f>/f<2a Maximum/Minimum
Threshold f>/f<2a 45.00 ... 55.00 Hz (step 0.01 Hz)
Tripping time tf>/f<2a 0.00 ... 60.00 s (step 0.01 s)
Type f>/f<2b Maximum/Minimum
Threshold f>/f<2b 45.00 ... 55.00 Hz (step 0.01 Hz)
Tripping time tf>/f<2b 0.00 ... 60.00 s (step 0.01 s)
Threshold df>2 0.1 ... 10.00 Hz/s (step 0.1 Hz/s)
Tripping time tdf>2 0.00 ... 60.00 s (step 0.01 s)
Second harmonic restraint - 2ndh-REST
Second harmonic restraint threshold (I
2ndh
>) 10...50 %
Reset delay (t
2ndh>RES
) 0.00...100.0 s
Intentional delay (t
2ndH-REST
) 0.05...3.00 s
Averaged values
Fixed average period (t
FIX)
1...60 min
Moving average period (t
ROL)
1...60 min
Periods per moving average (N.
ROL)
1...24
THD monitoring
Threshold (THDI>) 6...12 %
Intentional delay (t
THD-I>
) 1...15 min
Threshold (THDU>) 6...12 %
Intentional delay (t
THD-U>
) 1...15 min
Breaker diagnostics
Opening counter threshold (N.Open) 0...10000
Interrupted current sum threshold (SumI) 0...5000 I
n
Opening time for calculation ∑I
2
t (t
break
) 0.05...1.00 s
Interrupted I^2t sum threshold (SumI^2t) 0...5000 I
n
2
.
s
Maximum admitted opening time (t
break
>) 0.05...1.00 s
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