Kemppi Master S 400 Service Manual

Service manual Master S 400 and 500
Version 1.1
5.9.2014
16
Kemppi Oy
IGBT diode
Positive test lead
Negative test lead
Result
IGBT 1
Output 1
DC-link positive
0,2-0,7VDC
IGBT 2
Output 2
DC-link positive
0,2-0,7VDC
IGBT 3
Ground
Output 1
0,2-0,7VDC
IGBT 4
Ground
Output 2
0,2-0,7VDC
IGBT 1
DC-link positive
Output 1
OL
IGBT 2
DC-link positive
Output 2
OL
IGBT 3
Output 1
Ground
OL
IGBT 4
Output 2
Ground
OL
4.1.1.3. Overheat protection
IGBT module has NTC for protecting it from overheating. Thermistor is integrated inside the module.
NTC
test leads
Result
22 degrees of
Celsius
Between the test points (NTC-
ground) in resistance function
23kOhm
NTC2
NTC1
1
NTC1
NTC2

Kemppi Master S 400 Specifications

General

Brand	Kemppi
Model	Master S 400
Category	Welding System
Language	English