Micro
ARE Series 24V Chargers, Single Phase
Options and Accessories
PM990-1070-24, Issue 12
7-2
Blocking Diode
7.2
A silicon diode inserted into the negative DC output prevents the flow of reverse current from the battery
when the equipment is DC-energized preventing additional battery drain.
For systems with blocking diodes, the Float and Equalize voltage shoudl be set about 0.7 volts above the
desired battery voltage to compensate for the diode voltage drop. This offset should be adjusted to obtain
the desired output voltage for each installation.
Note: Current drain without the blocking diode is typically less than 100 mA
.
6A through 12A rated Systems
25A through 50A rated Systems
100A rated System
Note:
Existing wire for NEG output of DC breaker to NEG DC output terminal is removed and replaced
with blocking diode and 2 wires.
FIGURE 7-2 BLOCKING DIODE ADD ALTERNATIVE
