Keysight Technologies N69100 Series, Руководство по эксплуатации и обслуживанию

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Multiple Unit Connections
Parallel Connections
Load and Sense Connections
Primary/Secondary Connections
Series Connections
Parallel Connections
Parallel operation lets you connect multiple power supplies together to create a system with higher
total current and power. This applies for current sourcing as well as current sinking operation.
SHOCK HAZARD All paralleled units must be connected to ground through a grounded
power cord at all times. Any interruption of the protective (grounding) conductor or
disconnection of the protective earth terminal on any unit will cause a potential shock
hazard that could result in injury or death.
To Prevent Possible Equipment Damage:
l
Connect no more than ten units of identical voltage ratings. All units must have the
same voltage rating but current ratings can be different. All units must have the
same version firmware. Refer to
Instrument Identification for the firmware version.
l
Always turn the AC power on and off together. Never leave any units powered on
while the others are turned off.
Load and Sense Connections
The following figure illustrates three units connected in parallel. Note the following recommendations:
l
Always install the paralleled units relatively close to each other.
l
Keep the cables from the power supplies to the load as short as possible and twist or bundle the
leads to reduce lead inductance and noise pickup. The goal is to minimize the loop area or phys-
ical space between the + and - output leads from the bus bars to the load.
l
If the paralleled units cannot be located close together, a symmetrical arrangement of separate
load-wire pairs of equal length connecting to a common load point is highly recommended. This
provides the best possible dynamic response.
l
Bus bars can be used to parallel the output terminals in a stacked configuration. Ensure that the
cross-section area of the bus bars will accommodate the total output current of the stack. Bus
bars can be placed on either side of the output terminals. Exposed bus bar surfaces must either be
enclosed in a cabinet or insulated so that no accidental contact with lethal voltages can occur.
2 Installing the Instrument
72 Keysight N69100 Series Operating and Service Guide