Application Examples For Heavy-Duty Starting (Class 20): 3Rw40 Only - Siemens SIRIUS 3RW30 Manual

12.2.2

Application examples for heavy-duty starting (CLASS 20): 3RW40 only

Recommended basic parameter settings
Assuming the conditions and constraints indicated below apply, the soft starter size must be
at least one power class higher than the motor rating for heavy-duty starting (CLASS 20).
You can find a suitable soft starter for the required motor rating based on the required
startup class in chapter Technical data (Page 127).
For typical applications where heavy-duty starting can apply as well as recommended
parameter settings for the soft starter, refer to the table below.
General conditions and constraints
CLASS 20 (heavy-duty starting)
3RW402. / 3RW403. / 3RW404.
3RW405. / 3RW407.
ON time
Standalone assembly
Installation altitude
Ambient temperature kW
Note
The settings and device dimensions indicated in these tables are examples only; they are
merely provided for information purposes and are not binding. The actual settings depend on
the application and must be optimized when the equipment is commissioned.
If other conditions and constraints apply, either refer to the chapter Technical data
(Page 127) or check your requirements and selection with Technical Assistance (Page 15).
SIRIUS 3RW30 / 3RW40
Manual, 10/2018, NEB535199502000/RS-AB/005
Maximum starting time 20 s,
300% current limiting,
max. 5 starts / hour
Maximum starting time 40 s,
350% current limiting,
max. 1 start / hour
30%
Max. 1000 m / 3280 ft
40 °C / 104 °F
Configuration
12.2 Startup class
91