Motor protection
SIMOCODE pro
3-8 GWA 4NEB 631 6050-22 DS 03
Class
The class (trip class) indicates the maximum tripping time within which
SIMOCODE pro must trip cold at 7.2 times the set current I
s
(motor
protection according to IEC 60947). With regard to tripping time precision,
SIMOCODE pro fulfills the extended requirements of tolerance band E
according to IEC/EN 60947-4-1. Please take into account that with start-ups
> "Class 10", the admissible AC3 current of the contactor may have to be
reduced (derating), i.e. a larger contactor selected.
The following figure shows trip classes 5, 10
, 15, 20, 25, 30, 35 and 40 for 3-
pole symmetrical loads:
Fig. 3-2: Trip classes for 3-pole symmetrical loads
To Next Page
Loading...
