Kemppi MF 33 Service Manual

Main circuit card Z001
Operation principle
G1
G3
G2
G4
G5
L1
U
G1
U
G3
U
G4
U
G2
U
T1
U
G5
U
L1
Approx.. + 570 V
U
G1
U
G2
U
G3
U
G4
U
T1
U
G5
U
L1
t
t
t
t
t
t
t
When IGBT-transistors G1 and G4 conduct, there is a positive voltage U
T1
in main transformer T1 primary
and when IGBT-transistors G2 and G3 conduct there is a negative voltage
U
T1
in main transformer primary.
Power is adjusted by changing the IGBT timings (PWM)
15

Kemppi MF 33 Specifications

General

Brand	Kemppi
Model	MF 33
Category	Welding System
Language	English