Siemens SINAMICS S120 Manual page 405

Forming circuit
The forming circuit can be built using incandescent lamps or, alternatively, resistors.
Components required for reforming outside the drive line-up
● 1 fuse switch, triple 400 V / 10 A or double 230 V / 10 A
● Cable 1.5 mm
● 3 incandescent lamps 230 V / 100 W for a line voltage of 3-phase 380 - 480 V AC.
Alternatively, use 3 resistors of 1 kΩ / 100 W each (e.g. GWK150J1001KLX000 from
Vishay) instead of the incandescent lamps.
● 2 incandescent lamps 230 V / 100 W for a line voltage of 1-phase 200 - 240 V AC.
Alternatively, use 2 resistors of 1 kΩ / 100 W each (e.g. GWK150J1001KLX000 from
Vishay) instead of the incandescent lamps.
● Sundry accessories, such as lamp socket, etc.
Figure 11-10 Forming circuit for 3-phase AC Power Modules with incandescent lamps
AC Drive
Manual, (GH6), 07/2016, 6SL3097-4AL00-0BP5
2
Service and maintenance
11.4 Forming the DC link capacitors
405