The fuse values and quantity vary depending on which WF-8700 Series Power Center you
have. Refer to the table and drawing below.
• WF-8712 – 15A (1)
• WF-8725 – 30A (1)
• WF-8735 – 40A (1)
• WF-8740 – 30A (2)
Blown Fuse Indicators on DC Fuse Board
The DC Fuse Board has individual blown fuse indicators as standard equipment. The
WF-8712P & WF-8725P have 4 DC circuits (3 Branch and 1 Battery). The WF-8735P and
WF-8740P have 6 DC circuits (5 Branch and 1 Battery). Each of the circuits contain a Red
LED to indicate a blown fuse. If one of the circuits draws more current than the rating of
the fuse, the fuse will blow. When this occurs, the Red LED for that circuit will illuminate.
NOTE:
The fuse board employs surface mount LEDs which are barely visible to the naked
eye. Replace the blown fuse with a known good fuse of the same rating.
NOTE:
If the
replacement fuse blows again, check that circuit for a short or overload condition.
Automatic Cooling Fan
The cooling fan in the WF-8700 Series Power Center is incremental and is controlled by
the current drawn out of the converter to the applied load.
NOTE:
The WF-8712P does not
have a fan. The on-board microprocessor increases fan speed as the total load increases and
decreases fan speed as the load decreases. Unlike traditional temperature-controlled fans, the
load-controlled fan provides better component cooling by avoiding temperature spikes which
can lead to premature component failure.
Over-Temperature Protection
If the internal temperature of the converter exceeds a critical point, it will shut down. This
protects the unit from excessive heat that may damage sensitive components. The unit will
restart once the temperature inside has dropped.
Electronic Current Limiting
In the event that the output current exceeds the maximum rating for the WF-8700 Series
Power Center converter, the output current will remain constant, but the output voltage
will begin to drop. If this occurs, the unit will recover once loads are reduced.
4
Figure 1
Summary of Contents for WF-8700 Series
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