Siemens SINAMICS S120 Equipment Manual page 111

Figure 5-6
T [s] period duration of braking duty cycle
A [s] load duration
P [W] continuous braking power of braking resistor
n
P
max
Table 5-5 Example of duty cycles
Unit
P kW
max
P kW
n
A = s
T = s
Weight kg
Degree of protection
Connection cables
A shielded connection cable (3 m long; 1.5 mm
braking resistor with 25 kW.
A shielded connection cable (4 mm
braking resistor with 100 kW.
The maximum cable length for both braking resistors is 10 m.
Booksize Power Sections
Equipment Manual, (GH2), 04.2004 Edition, 6SL3097-2AC00-0BP0
P (kW)
P
max
P
n
Duty cycle for braking resistors
[W] peak braking power of braking resistor
Braking resistor
6SN1113–1AA00–0DA0
25
0.3
0.4
33
3.4
IP54
0 kW
A
A
T
), which is supplied as standard, is fitted to a
2
), which is supplied as standard, must be connected to a
2
DC Link Components Booksize
5.2 Braking resistors
0 kW
t (s)
Braking resistor
6SL3100–1BE31–0AAx
100
1.5
2
133
5.6
IP20
5-11