Siemens SINAMICS S120 - Page 293

SINAMICS G130
Engineering Information
SINAMICS Engineering Manual – November 2015
Ó Siemens AG
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Precharging on a SINAMICS G130 converter Chassis unit using a separate precharging rectifier and precharging resistors
This precharging principle involves the use of ohmic resistors R
p
and is therefore subject to losses. The precharging
resistors are dimensioned thermally to precharge the DC link of the G130 converter without themselves becoming
overloaded. They are not capable of precharging any additional DC link capacitance. For this reason, it is not
permissible to connect further S120 Motor Modules to the DC link of a SINAMICS G130 converter, or to interconnect
multiple G130 converters via the same DC link.
The following table specifies the rms values of the line currents which occur at the beginning of the precharging
process in the case of line supply voltages 400 V / 500 V / 690 V. Where other line voltage values apply, the line
current values must be converted in proportion to the line voltage.
The precharging currents decay in accordance with an e-function until the precharging process is completed after a
period of typically 1 to 2 s. Due to the temperature rise in the precharging resistors during the process, the minimum
permissible interval for complete precharging of the DC link is 3 minutes.
Rated power of G130
at 400 V / 500 V / 690 V
Rated output
current
Line current at the beginning of DC link
precharging (initial rms value)
at 400 V / 500 V / 690 V
380 V – 480 V 3AC
110 kW 210 A 5 A
132 kW 260 A 6 A
160 kW 310 A 6 A
200 kW 380 A 8 A
250 kW 490 A 13 A
315 kW 605 A 13 A
400 kW 745 A 13 A
450 kW 840 A 13 A
560 kW 985 A 17 A
500 V – 600 V 3AC
110 kW 175 A 4 A
132 kW 215 A 5 A
160 kW 260 A 5 A
200 kW 330 A 8 A
250 kW 410 A 10 A
315 kW 465 A 10 A
400 kW 575 A 13 A
500 kW 735 A 15 A
560 kW 810 A 15 A
660 V – 690 V 3AC
75 kW 85 A 4 A
90 kW 100 A 4 A
110 kW 120 A 4 A
132 kW 150 A 4 A
160 kW 175 A 5 A
200 kW 215 A 7 A
250 kW 260 A 7 A
315 kW 330 A 11 A
400 kW 410 A 15 A
450 kW 465 A 15 A
560 kW 575 A 17 A
710 kW 735 A 21 A
800 kW 810 A 21 A
SINAMICS G130 converter Chassis units: Line currents at the beginning of precharging (initial rms values)