© National Instruments | 3-9
RMX Programmable Power Supplies User Manual
When the Output Terminal is Grounded
If the positive output terminal is connected to the chassis terminal, the positive output terminal
is at ground potential. The cable and load that are connected to the output terminal (including
the sensing terminal) will only require an insulation capacity that is greater than or equal to the
maximum output voltage of the RMX programmable power supply with respect to the chassis.
There is no need to provide insulation that is greater than or equal to the isolation voltage of the
RMX programmable power supply.
The same holds true when the negative terminal is connected to the chassis terminal. The cable
and load require a reinforced or double insulation with a capacity that is greater than or equal to
the maximum output voltage of the RMX programmable power supply.
For safety reasons, connect one of the output terminals to the chassis terminal unless your
application requires the output terminals to be floating.
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