Regulated High voltage power supplies

Automatic output voltage adjusting (Stepping)

After a downtime of some hours condensed water or any other non-operating materials may be accumulated in the filter and cause many overcurrent shutdowns after start up the air cleaning system.
To ensure unattended operation in this situation the high voltage power supplies can be equipped with a "Stepper", which adapts the output voltage automatically to the respective situation.
The "Stepper" contains an error counter, which works similar to the error counter for device turn-off. Reaches this error counter the number of seven errors, the output voltage will be reduced by 100V. This procedure will be repeated until the lowest step is reached. Occures no error while a time span tRESET_StepperFehlerzähler of 5s, the error counter will be reset to 0.

Occurs no error while a time span tStepUp of 20s, output voltage will be increased by 100V until the adjusted output voltage is reached.


The exact mode of operation is shown in the following figure.
The standard device has no "Stepper".


Step 7: maximum output voltage
Step 0: minimum output voltage

Options to adapt the device to customer specifications:

• The number of errors, which causes a step-down of the output voltage, may be adjusted.
• Time span tRESET_StepperFehlerzähler may be adjusted.
• Time span tStepUp may be adjusted.
• The maximum number of steps may be 2, 4 or 8.
• The voltage difference between two steps may be adjusted.