Campbell DSP4 Especificações Página 59

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Section 1. Installation and Maintenance
1-3
FIGURE 1.2-1. CR3000 Battery Pack and Panel
1.3 Campbell Scientific Power Supplies
The CR3000 is available with either alkaline or lead acid battery options. It
may also be purchased without a battery option for connection to an external
12V power supply.
Each of the power supplies has a thermal fuse in the power circuit that limits
source current. If excessive current is drawn, the fuse gets hot, increases in
resistance, and limits current. When the problem is fixed, the fuse cools and
the resistance decreases, eventually allowing current to pass. When excessive
current is drawn due to shorting the power leads to the Wiring Panel, allow 10
to 15 seconds for the fuse to cool before connecting power.
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