Braking Resistors; Description - Siemens SINAMICS S120 Manual

Braking resistors

9.1

Description

A braking resistor is used to dissipate the excess DC link energy in generator operation. The
braking resistors can be connected to a Braking Module or directly to a 20 kW or 40 kW
Basic Line Module.
Resistors with and without a thermostatic switch are available with various rated powers. The
thermostatic switch monitors the braking resistors for overtemperature and issues a signal at
an isolated contact if the limit value is exceeded.
Table 9- 1
Braking resistor
Braking resistors without a thermostatic switch
6SN1113-1AA00-
0DA0
Resistance: 17 Ω
P : 0.3 kW
N
6SL3100-1BE31-
0AA0
Resistance: 5.7 Ω
P : 1.5 kW
N
Braking resistors with a thermostatic switch
6SE7018-0ES87-
2DC0
Resistance: 80 Ω
P : 1.25 kW
N
6SE7021-6ES87-
2DC0
Resistance: 40 Ω
P : 2.5 kW
N
6SE7023-2ES87-
2DC0
Resistance: 20 Ω
P : 5 kW
N
6SE7028-0ES87-
2DC0
Resistance: 8 Ω
P : 12.5 kW
N
Booksize Power Units
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
Assignment of braking resistors
Braking Module
Booksize
X
X
-
-
-
-
Braking Module Basic Line Mod-
Booksize Com- ule 20 kW
pact
X
X
X
X
X
-
9
Basic Line Mod-
ule 40 kW
- -
- -
X X
X X
X X
- X
549