Kempact 253Mv, 323Mv; Primary Rectifier, V31 - Kemppi Kempact 253R Service Manual

8.3. Kempact 253MV, 323MV

8.3.1. Primary rectifier, V31

Primary side primary rectifier diodes can be measured one at the time
•
Diodes must be measured both forward bias and reverse bias condition to make sure they are fine
•
Check the diodes using the multimeter diode function to measure their threshold voltage 0,3...0,6 V
•
Measurings :
1) Negative test pole to rectifier pole (1, black), positive test pole to rectifiers poles (1, red) one at time
Result: 0,3...0,6 diodes Ok.
2) Positive test pole to rectifier pole (3, red), negative test pole to rectifier poles (2, black) one at the time
Result: no value diodes Ok
3) Positive test pole to rectifier pole (2, red), negative test pole rectifier poles (2, black)one at the time
Result: 0,3...0,6 diodes Ok
4) Negative test pole to rectifier pole (3, black), positive test pole to rectifier poles (2, red) one at the time
Result: no value diodes Ok
3)
1)
1
)
2)
1
)
2)
1
)
2)
Kemppi Oy
SERVICE MANUAL
KEMPACT RA_V_1.2
V31
(+)
2)
(-)
3)
V1
2) 1) 2) 1) 2) 1)
3) 2)
1) 3)
33 (40)