Conformity to the strictest standards
Because of the pulsed currents we described above, conventional inverter power sources cause harmonic disturbance. This is transmitted back to the mains and increases current draw. For this reason, international bodies have long been advocating the enforcement of standards aimed at reducing harmonics. With the introduction of standard EN 61000-3-12, limitations have been placed on harmonic current disturbance in professional and industrial welding industries.