Kikusui PCZ1000A, Operation Manual, Page: 42 / 100

3-8
PCZ1000A
Overvoltage protection (OVP)
page 2-10
The OVP function is activated if a voltage of 470 Vpeak or greater is applied to the
load terminals. In this case, the buzzer sounds and the PCZ1000A automatically
goes to the load-off state. Please check the output voltage of the equipment under
test immediately.
The following message appears in the lower part of the front panel display.
*ALARM* OVP
Overpower protection (OPP)
The OPP function is activated if the input power exceeds 1 150 W. In this case, the
buzzer sounds and the PCZ1000A automatically goes to the load-off state.
The following message appears in the lower part of the front panel display.
*ALARM* OPP
Overheat protection (OHP)
page 2-3
The OHP function is activated if the temperature of the internal power supply unit
rises abnormally. In this case, the buzzer sounds and the PCZ1000A automatically
goes to the load-off state. Check that the operating temperature is within the range 0
to 40 degrees C and check whether the fan motor has shutdown, or whether the front
or rear ventilation slots are blocked. Also check whether the dust filter for the front
ventilation slots is clogged. If clogged, see "Cleaning the Dust Filter" on page 5-2.
The following message appears in the lower part of the front panel display.
*ALARM* OHP
Internal circuit protection (FUSE BRK)
If the internal fuse blows, the FUSE BRK is activated, the buzzer sounds, and the
PCZ1000A automatically goes to the load-off state.
The following message appears in the lower part of the front panel display.
*ALARM* FUSE BREAK
Peak overcurrent protection (POCP)
The POCP function is activated if the current reaches 48 Apeak or greater. In this
case, the buzzer sounds and the PCZ1000A automatically goes to the load-off state.
The following message appears in the lower part of the front panel display.
*ALARM* POCP
See
See