Technical data

3 DC Power Supply Operation
Protection Functions
78 U3606A User’s and Service Guide
Protection Functions
Overvoltage protection (OVP)
In constant current mode, the U3606A regulates the output current at the
selected value, while the voltage varies as required by the load. The
overvoltage protection protects against overvoltage conditions on the
output. If the load attempts to draw more voltage than required, such that
it exceeds the programmed protection value, the overvoltage protection
circuit will protect the load by disabling the output.
The following steps shows you how to set the OVP trip level, how to check
OVP operation, and how to clear the OVP condition.
Setting the OVP trip level
1 The OVP trip level can be programmed when the output is enabled
(OUT) or disabled (SBY). Ensure that the U3606A is operating in
constant current mode. (The CC annunciator is illuminated.) Press Shift
> Protect to enter the OVP edit menu.
2 Press or to select which digit position to be changed.
3 Press or to increase or decrease the value. The OVP value is set
to the maximum protection limits by default.
• 33.000 V when range S1 is selected, and
• 8.8000 V when range S2 is selected.
NOTE
Setting the OVP trip level will not activate the OVP feature. To activate the
OVP feature, you will need to enable the output protection state from the
utility menu. See Chapter 4, “Setting the output protection state,” starting
on page 122 for more information.