Siemens SIMATIC ET 200pro - Page 123

SIMATIC – ET 200pro motor starter
GWA 4NEB 950 5661-02 DS 04
8-31
CLASS 15
Device installation vertical horizontal
Rated current I
e
12 A12 A12 A12 A12 A11 A
Ambient temperature 40°C 50°C 55°C 40°C 50°C 55°C
Type of protection 1) 2) 1) 2) 1) 2) 1) 2) 1) 2) 1) 2)
Duty cycle = 30%, Start
4xI
e
/3 s
72 72 52 52 42 42 59 59 42 42 40 40
Duty cycle = 70%, Start
4xI
e
/3 s
50 54 34 34 24 24 41 41 24 24 24 24
Duty cycle = 30%, Start
4xI
e
/6 s
36 36 26 26 21 21 29 29 21 21 20 20
Duty cycle = 70%, Start
4xI
e
/6 s
25 27 17 17 12 12 20 20 12 12 12 12
CLASS 20
Device installation vertical horizontal
Rated current I
e
12 A12 A12 A12 A12 A11 A
Ambient temperature 40°C 50°C 55°C 40°C 50°C 55°C
Type of protection 1) 2) 1) 2) 1) 2) 1) 2) 1) 2) 1) 2)
Duty cycle = 30%, Start
4xI
e
/4 s
54 54 38 38 31 31 44 44 31 31 31 31
Duty cycle = 70%, Start
4xI
e
/4 s
38 40 25 25 18 18 31 31 18 18 18 18
Duty cycle = 30%, Start
4xI
e
/8 s
27 27 19 19 15 15 22 22 15 15 15 15
Duty cycle = 70%, Start
4xI
e
/8 s
182012129915159999
1) Effective stress cycles value corresponds to 1.15 x I
e
=> motor protection
2) Stress cycle limit for motor starter. The motor should be protected here against overloads by means of a thermistor.
Table 8-6: Switching frequencies with activated soft start function (cont.)