User Manual

4. Precautions for using the power supply
Caution ! Before connecting the mains plugs of the power supply to the main
outlet and switching on the equipment, be sure that the correct main voltage is
available and polarity has been correctly observed. Incorrect polarity can
damage the power supply and/or any connected equipment. Replace
defective fuse only by an equivalent type. Before inserting the mains plug in
the power outlet ensure that the line voltage corresponds with the selected
line voltage of the power supplies.
Caution! Never use the instrument without fully closed housing.
4.1. Adjustment of output current (DC)
Caution! Before connecting this power supply to the load ensure that
the specified maximum output current is not exceeded.
1. Disconnect the leads from the plus (+) and minus (-) terminals or the AC
terminals of the power supply.
2. Adjust the desired output voltage with the voltage control.
3. Turn the current control counter-clockwise.
4. Short-circuit the plus and minus output terminals with a suitable short-
circuit bridge or cable (the bridge or cable must be adequately
dimensioned for the desired output current).
Caution! Only possible in DC-voltage range. Short-circuit at AC-voltage
range activates input-fuse.
5. Turn the current control clockwise until the desired current is indicated.
6. Remove the short-circuit bridge or cable from the plus and minus terminals.
7. The power supply is ready for operation now.
4.2. Operating method
1. To adjust the desired output voltage (0…30V), first should rotate clockwise
the adjustment knob (12) to maximum, then turn on power switch (1).
2. Adjust adjustment knob (14) till output voltage reach required voltage
value.
3. The LED for constant current (CC) expires and the LED for constant voltage
(CV) lights up.
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