Siemens SIRIUS 3RT Series - Characteristics for the Solid-State Reversing Contactor

SIRIUS 3RF34 solid-state switching devices
3.11 Technical data
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
367
3.11.15.2 Characteristics for the solid-state reversing contactor
Switching frequency characteristic for the solid-state reversing contactor
Motor's operating data
I
a
I
e
t
a
t
b
I
b
t
ED
NSB0_01815a
t
p
t
s
I
a
Direct-on-line starting current
I
e
Rated operational current
I
b
Operating current
t
a
Start time
t
a
Operating time
t
p
Idle time
t
ED
ON period
t
s
Operating cycle
ED [%] = × 100%
t
s
t
ED
Figure 3-23 Switching frequency characteristics - load diagram