Keysight U8030A Series, User Manual

Page: 55 / 66

2 Operation and Features
54 Keysight U8030A Series User’s Guide
1 Select the output channel with the OVP trip.
– Press [1] to select Output 1, or
– Press [2] to select Output 2.
– The corresponding annunciator ( OUT1 or OUT2 ) turns on.
2 Clear the OVP trip.
– Press the [Over Voltage] button again to clear the OVP trip.
Figure 2-1 Recommended protection circuit for battery charging
NOTE
If the OVP trip persists, decrease the voltage limit settings to clear the tripping.
NOTE
The power supply’s OVP circuit contains a crowbar SCR, which effectively shorts
the output of the power supply whenever the overvoltage condition occurs. If an
external voltage source such as a battery is connected across the output, and
the overvoltage condition inadvertently occurs, the SCR will continuously sink a
large current from the source and possibly damaging the power supply. To avoid
this, a diode must be connected in series with the output as shown in Figure 2-1 .