Siemens SINAMICS S120 Equipment Manual page 420

Service and maintenance
12.4 Forming the DC link capacitors
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 12-11 Forming circuit for 3-phase AC Power Modules with incandescent lamps
418
(AWG 16)
2
Manual, 06/2019, 6SL3097-5AL00-0BP1
AC Drive