Siemens SINAMICS S120 Manual page 110

Line Modules
3.2 Basic Line Modules
In a version with two precharging resistors connected in parallel for each phase, a contactor
of the Sirius 3RT1044 series is recommended.
Precharging resistors
The precharging resistors are used to limit the current while precharging.
Table 3- 12 Technical data for the precharging resistors
Category
Rated voltage
Frequency
Resistance value
Pulse loading capability
Precharging current
2)
- one resistor per phase
- two resistors per phase
Ambient temperature
Order number
The pulse load is present for a minimum of 1 second, followed by a pause of 175 seconds.
1)
Line current present at the start of the precharging (initial rms value)
2)
As the precharging resistors can get hot, sufficient cooling and clearance to adjacent
components must be ensured in operation.
Fuses
The precharging circuit components are protected against overload using fuses.
In a version with one precharging resistor for each phase, fuses of the 3NE1 817-0 (50 A)
type are recommended.
In a version with two precharging resistors connected in parallel for each phase, fuses of the
3NE1 021-0 (100 A) type are recommended.
Circuit breaker
The circuit breaker is used to connect to the line supply.
A 3WL1220 circuit breaker is recommended.
The circuit breaker is controlled via terminal -X9: 3, 4 of the Basic Line Module.
108
Unit
V
Hz
Ω
Ws
1)
A
A
° C
3 AC 380 ... 480 V
690 VAC
47 ... 63
2.2 ±10%
18000
91
182
60
6SL3000-0KE12-2AA0
Manual, (GH3), 01/2013, 6SL3097-4AE00-0BP3
3 AC 500 ... 690 V
690 VAC
47 ... 63
4.0 ±10%
18000
86
172
60
6SL3000-0KH14-0AA0
Chassis power units