Technibel PHRIE Series - Page 111

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5.1.7 DIODE BRIDGE CHECKING
Use multimeter in position “diode test”
• Single phase
C
A
B
Between terminals Junction forward voltage drop
Tester terminal + Tester terminal -
A ~ C+ 0.5 to 0.7
A ~ D- OL
B~ C+ 0.5 to 0.7
B~ D- OL
C+ A ~ OL
C+ B~ OL
D- A ~ 0.5 to 0.7
D- B~ 0.5 to 0.7
• Three phases
Between terminals Junction forward voltage drop
Tester terminal + Tester terminal -
A ~ D+ 0.5 to 0.7
A ~ E- OL
B~ D+ 0.5 to 0.7
B~ E- OL
C~ D+ 0.5 to 0.7
C~ E- OL
D+ A ~ OL
D+ B~ OL
D+ C~ OL
D- A ~ 0.5 to 0.7
D- B~ 0.5 to 0.7
D- C~ 0.5 to 0.7
D
D +
E -
C ~
B ~
A ~