TECHNICAL MANUAL "SE" (PBM753) Revision no. 1 dd. 01/02/2017
P.B.M. S.r.l. via Barella, Z.I. - VIGNOLA ( MO ) ITALIA Tel. + 39 (059) 7705311 Fax + 39 (059) 7705300
http://www.gruppopbm.ite-mail : pbm@gruppopbm.it file: Manuale SE PBM753 GB rev.1.doc
page 13
Checking the rectifier bridge
The rectifier bridge is made up of button diodes on aluminium sheets which act as dissipaters.
To achieve different current capacities, the bridge is made up of a variable number of diodes, positioned in
parallel on the same plate.
To test operation of the Rectifier Bridge, remove it from the charger.
To check the condition of these diodes,
use a Digital tester in “Check-Diode” mode :
1) Make sure that a diode voltage (0,4V÷0,8V) is present by pointing the positive test prod on the phases
input from transformer and the negative test prod on the positive output pole.
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