Kemppi KEMPACT 253A - Kempact 253 MV, 323 MV; Primary Rectifier, V31

SERVICE MANUAL
KEMPACT RA_V_1.2
33 (40)
Kemppi Oy
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
V31
V1
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