Table 143. Motor start-up supervision (STTPMSU) main settings
Parameter Function Value (Range) Step
Motor start-up A STTPMSU
1.0...10.0 × I
n
0.1
Motor start-up time STTPMSU 1...80 s 1
Lock rotor time STTPMSU 2...120 s 1
Operation STTPMSU 1 = on
5 = off
-
Operation mode STTPMSU 1 = IIt
2 = IIt, CB
3 = IIt + stall
4 = IIt + stall, CB
-
Restart inhibit time STTPMSU 0...250 min 1
Table 144. MSCPMRI Group settings (Basic)
Parameter
Function Value (Range) Step
Warm start level MSCPMRI 20.0...100.0% 0.1
Max Num cold start MSCPMRI 1...10 1
Max Num warm start MSCPMRI 1...10 1
Table 145. Phase reversal protection (PREVPTOC)
Characteristic
Value
Operation accuracy Depending on the frequency of the measured current: f
n
±2 Hz
±1.5% of the set value or ±0.002 × I
n
Start time
1)2)
Minimum Typical Maximum
I
Fault
= 2.0 × set
Start value
23 ms 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
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
Table 146. Phase reversal protection (PREVPTOC) main settings
Parameter
Function Value (Range) Step
Start value PREVPTOC
0.05...1.00 x I
n
0.01
Operate delay time PREVPTOC 100...60000 ms 10
Operation PREVPTOC 1 = on
5 = off
-
1MRS759144 A
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