Parallel Connections - Agilent Technologies N5700 Series User Manual

2 Installation
Battery Charging
CAUTION
Grounding the Output
WARNING

Parallel Connections

CAUTION
28
If a battery or external voltage source is connected across the output and the
output is programmed below the battery or external voltage source, the power
supply will continuously sink current from the external source. This could
damage the power supply.
To avoid damaging the power supply, insert a reverse blocking diode
in series with the + output connection of the power supply. Connect
the diode's cathode to the + battery terminal or external voltage
source. Connect the diode's anode to the + output terminal of the
power supply.
The output of the power supply is isolated from earth ground. Either
positive or negative voltages can be obtained from the output by
grounding (or "commoning") one of the output terminals. Always use
two wires to connect the load to the output regardless of where or
how the system is grounded.
To avoid noise problems caused by common-mode current flowing
from the load to ground, it is recommended to ground the output
terminal as close as possible to the power supply chassis ground
SHOCK HAZARD
For models up to 60 VDC rated output, no point on the output shall be more
than ±60 VDC above or below chassis ground.
For models greater than 60 VDC rated output, no point on the Positive output
shall be more than ±600 VDC above or below chassis ground.
For models greater than 60 VDC rated output, no point on the Negative output
shall be more than ±400 VDC above or below chassis ground.
Only power supplies that have identical voltage and current ratings can be
connected in parallel.
Up to four units of the same voltage and current rating can be
connected in parallel to provide up to four times the output current
capability. Refer to the following figures for typical connections of
parallel power supplies using either local or remote sensing. The
figures show two units, however, the same connection method
applies for up to four units.
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Series N5700 User's Guide