Kemppi Minarc Evo 150 Service Manual

Service manual Minarc Evo 150 and 180
Version 1.3
30.9.2015
20
Kemppi Oy
Check the diode groups using the multimeter diode function to measure their threshold voltage. Diodes
must be measured both forward bias and reverse bias condition to make sure they are satisfactory. See
following pictures and table to make all the necessary measurements.
Mianrc Evo 150 card:
IGBT 1 emitter and IGBT 2 collector are connected
via main transformer; it is not possible to measure all
the four diodes separately without disconnecting the
transformer primary.
Main
transformer
primary
winding
GND
IGBT 1
emitter
DC-link
IGBT 2 collector
1
2
IGBT 1 emitter

Kemppi Minarc Evo 150 Specifications

General

Brand	Kemppi
Model	Minarc Evo 150
Category	Welding System
Language	English