Figure
Configuration
11.6 Calculating the permissible switching frequency
SIRIUS 3RW30 / 3RW40
84
Manual, 01/2010, 535 1995-02 DS01
11.6.2
Calculating the switching frequency (example)
Problem
The maximum permissible switching frequency of a 5.5 kW (12.5 A) 3RW4024 soft starter
must be determined. The requirements are side-by-side assembly and vertical mounting. A
ramp-up time of approx. 3 s at an ambient temperature of 40 °C is specified as a
supplementary condition (e.g. a pump motor with CLASS 10 starting). The soft starter must
be connected to a 3RV2021 motor starter protector by means of cables. (Clearance between
3RV and 3RW >= 40 mm)
MLFB
a (mm)
a (in) b (mm) b (in) c (mm)
c (in)
11-3 Clearances from other devices
3RW30 1./3RW30 2.
15
0.59
60
2.36
40
1.56
3RW30 3./3RW30 4
30
1.18
60
2.36
40
1.56
3RW40 2.
15
0.59
60
2.36
40
1.56
3RW40 3./3RW40 4.
30
1.18
60
2.36
40
1.56
3RW40 5./3RW40 7.
5
0.2
100
4
75
3
1
1
3
5
2
4
6
a
a
E
F
Summary of Contents for SIRIUS 3RW40
Page 1: ...Soft starters SIRIUS 3RW30 3RW40 Manual 01 2010 Industrial Controls Answers for industry ...
Page 2: ......
Page 68: ...Connecting 9 1 Electrical connection SIRIUS 3RW30 3RW40 68 Manual 01 2010 535 1995 02 DS01 ...
Page 210: ...Index SIRIUS 3RW30 3RW40 210 Manual 01 2010 535 1995 02 DS01 ...
Page 211: ......