Kemppi MinarcTig Evo 200 Service Manual

Service manual MinarcTig Evo 200
Version 1.1.5.
29.9.2015
19
Kemppi Oy
4.2.1.3. Secondary rectifier
Main supply voltage must not be connected during the secondary rectifier diode measuring.
Use a digital multimeter to test the secondary diodes. Diodes are in groups, so it is not possible to meas-
ure them one by one unless they removed from the board and measured separately.
Diode
Positive test lead
Negative test lead
Result
Forward bias
Negative output terminal
Positive output terminal
0,2-0,6VDC
Reverse bias
Positive output terminal
Negative output terminal
No value
4.2.1.4. Voltages
The Z001 main circuit card has the DC-link voltage after the input rectifier and several auxiliary voltages
made by the auxiliary PSU.
Note! These voltages are in the primary side. Even touching the ground level may affect electric
shock because there is up to 120VDC between the ground and protective earth.
+16VDC,
R10 left side connec-
tion point
+24VDC,
V5 left side connec-
tion point
Primary GND,
R9 upper side connection point

Kemppi MinarcTig Evo 200 Specifications

General

Input Voltage	230 V
Protection Class	IP23
Power Factor	0.99
Welding Process	TIG, MMA
Duty Cycle TIG	35% at 200 A
Standards	IEC 60974-1, IEC 60974-10