IGBT-transistor testing
G
C
E
I
G
B
T
-T
E
S
T
E
R
T
R
1
T
R
2
C
O
N
T
R
O
L
O
F
F
O
N
B
2
/
6
C
2
E
1
/
1
E
2
/
2
C 1/ 3
B1/4
Discrete-IGBTs (50 A, 600 V) can be tested with an IGBT tester.
When changing damaged IGBTs, the whole series must be changed,
plus the gate resistors (10
Ω
)!!
Discrete-IGBT´s tightening torque to the heatsink is 0,6…1,2 Nm!
Secondary diode testing
When testing secondary diodes the other coil end of the main
transformer (T001) must be disconnected. Main transformer
cable connector´s may break if bent!
If secondary diodes are in short circuit, then the power source
will not start.
The tightening torque for the secondary diodes is 0,6…1,2 Nm!
The soldering must be done carefully, because they are stressed with
high current, approximately 30 A/ leg!
26
Содержание Minarc 150
Страница 1: ...150 150 150 150 VRD VRD 151 151 Service Manual Service Manual Ver 1 1 Ver 1 1 ...
Страница 8: ...Main circuit diagrams 8 Minarc 150 150 VRD Minarc 151 ...
Страница 15: ...Measuring point D Auxiliary coil voltage Auxiliary coil voltage min MMA Auxiliary coil voltage max MMA 15 ...
Страница 18: ...Measuring point G Gate control upper IGBTs Gate pulse min MMA Gate pulse max MMA 18 ...
Страница 19: ...Measuring point H Gate control lower IGBTs Gate pulse min MMA Gate pulse max MMA 19 ...
Страница 20: ...Measuring point I Auxiliary voltage from DC link Measuring point J Signal lamp H2 control VRD ON 20 ...
Страница 24: ...Structure Z001 A001 T10 T15 T25 3 mm 24 ...
Страница 25: ...Structure Extracting the control card A001 25 ...
Страница 27: ...Notes 27 ...
