2 Installation
30 Series E4360 User’s Guide
Output Isolation and Grounding
CAUTION
The positive output terminal should NOT be connected to ground in
applications where the output voltage is repeatedly and rapidly
changing as is the case in a series or shunt regulator application. This
can result in overheating and damaging the resistors of internal RC
networks that are connected to ground.
The output terminals are isolated from earth ground. An earth ground
terminal is provided on the rear panel. Either output terminal may be
grounded, or an external voltage source may be connected between
either output terminal and ground. However, both output terminals must
be kept within ±240 VDC of ground. An earth ground terminal is
provided on the rear panel.
Capacitive Loads
In Fixed mode operation, the maximum external capacitance that may be
added to the output without causing instability is 2,000 µF. This is also
the maximum capacitance value that can be safely discharged by the
OVP (over-voltage protection) circuit.
CAUTION
Because of its high output voltage, the Keysight E4362A output
module generates high currents when discharging the load capacitor
under over-voltage conditions. Excessive currents can damage the
unit. The peak discharge current is limited by the sum of the external
capacitor's ESR (equivalent series resistance) and the series
resistance of the external circuit. For the Keysight E4362A’s external
capacitance limit of 2,000
F, the total resistance must not be less
than 56 milliohms. For smaller values of external capacitance, the
total resistance may be derated linearly.
Inductive Loads
When operating in SAS mode, load inductance should be kept under
200µH. For twisted pair wires or zipcord, allow approximately 0.25µH
per foot of load lead wire.
Shunt Switching Frequency
Output over-switching protects the unit against shunt-switching
frequencies above 50 kHz. If you need to shunt-switch at frequencies
above 50 kHz, contact your local Keysight Sales and Support Office.
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