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Parameterization
Table 5.12 - Time multiplying factor for warm tripping classes
Current in % of the motor In
0 % (cold)
20 %
40 %
60 %
80 %
100 % (full load)
Factor
1
0.87
0.74
0.61
0.48
0.35
NOTE!
When using a motor with PTC thermal sensors connected to the SRW 01, there is no need to enable
the tripping classes, therefore, adjust P640 = 0.
NOTE!
In order to correctly program the tripping class that will protect the motor, it is essential to have
available the motor locked rotor time. This data is available in the motor manufacturer catalog.
NOTE!
5
5-58
The thermal protection adopts the standard three-phase IP55 WEG motor as a model, therefore, if the
used motor is different do not program the tripping class at the maximum, but next to the minimum
tripping class necessary for starting the motor.