Setting The Rated Motor Current - Siemens SIMOCODE pro System Manual

Safety and commissioning information for EEx areas
F.2.1

Setting the rated motor current

Set the 3UF7 to the rated motor current (according to the type plate or
design test certificate of the motor).
Notice
Note the trip class/tripping characteristic of the 3UF7.
Select the trip class so that the motor is thermally protected, even when the
rotor is stalled.
Motors, cables and contactors must be suitable for the selected trip class.
Notice
Set the response of the overload protection to "Tripping"!
Example
Motor 500 V, 50/60 Hz, 110 kW, 156 A, temperature class T3, time T
I /I = 5.5:
A s
T = 11 s
E
Fig. F-1: Tripping conditions of the EExe motor, selected: CLASS 10
F-4
I /I = 5.5
A s
GWA 4NEB 631 6050-22 DS 03
= 11 s,
E
SIMOCODE pro