Fig. 65: Typical Curve Of The Mains Voltage (Top) And The Related Mains Current (Bottom) - Bosch Rexroth PSI 6 Series Operating Instructions Manual

1070080028 / 08 | PSI 6xxx
When operating medium-frequency inverters a harmonic load must be
accounted for in the mains system.
Typical 300 Hz
Fig. 65: Typical curve of the mains voltage (top) and the related mains cur­
rent (bottom) in one phase during the welding process
The 5th, 7th, 11th, 13th, 15th and 17th harmonic wave are the characte­
ristic harmonics in the mains current curve. The harmonic component
depends om the welding power.
The harmonic content max be considerably reduced by using smoo­
thing reactors with 4% short-circuit voltage.
Bosch Rexroth AG 361 / 460
Assembly