Precharging Circuit For The Basic Line Modules, Frame Size Gd - Siemens SINAMICS S120 Manual

Table 5- 11
5.2.6

Precharging circuit for the Basic Line Modules, frame size GD

Description
When switching on, the pre-charging input circuit ensures that the DC-link capacitors of the
Basic Line Module and the connected Motor Modules are precharged with current limiting.
After pre-charging has been completed, the circuit breaker is closed and the pre-charging
input circuit bypassed; the Basic Line Module is then directly connected to the line supply.
The pre-charging input circuit comprises a precharging contactor and precharging resistors;
the circuit must be protected against overcurrent using suitable protection measures.
To increase the permissible DC-link capacitance, the precharging resistors can also be
connected in parallel in each phase.
NOTICE
Damage to the units if the pre-charging input circuit is faulty
When it is switched on, the Basic Line Module can be destroyed if the pre-charging input
circuit is not correctly implemented.
• For Basic Line Modules, frame size GD, the precharging input circuit must be
Air-cooled chassis power units
Equipment Manual, 06/2020, 6SL3097-5AE00-0BP3
Line voltage assignment for the setting at the fan transformer (3 AC 500 ... 690 V)
Line voltage
500 V ± 10%
525 V ± 10%
575 V ± 10%
600 V ± 10%
660 V ± 10%
690 V ± 10%
implemented according to the following circuit and the notes for dimensioning the
various components.
Tap at the fan transformer (-T10)
500 V
525 V
575 V
600 V
660 V
690 V
Line Modules
5.2 Basic Line Modules
145