Keysight E36731A Manuel D'instructions page 78

OV Protection
Applicable for Power Supply mode only.
In Load mode, the over-voltage protection level is not programmable and is fixed at 110% of the rated input
voltage.
Over-voltage protection disables the output if the output voltage reaches the OVP level.
Press OVP State On to enable over-voltage protection. This is the default state.
Press OVP State Off to disable over-voltage protection.
To set the over-voltage protection, enter an over-voltage value in the OV Protection field.
The instrument's OVP circuit will program the output to zero whenever the overvoltage condition occurs. If
external voltage source such as battery is connected across the output, and the overvoltage condition inad-
vertently occurs, the current from the voltage source will sink through the internal circuitry; possibly damaging
the power supply. To avoid this, a diode must be connected in series with the output as shown below.
OC Protection
With over-current protection enabled, the instrument disables the output if the output current reaches the current
limit setting, which causes a transition from CV to CC mode.
Press OCP State On to enable over-current protection.
Press OCP State Off to disable over-current protection.
78 Keysight E36731A User's Guide