1. Introduction
To all residents of the European Union
Important environmental information about this product
This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm
the environment. Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a
specialised company for recycling. This device should be returned to your distributor or to a local recycling
service. Respect the local environmental rules.
If in doubt, contact your local waste disposal authorities.
Thank you for choosing VELLEMAN! The PS3010/PS3020 is a highly accurate, DC-regulated power supply with an
adjustable output. This output can be used for constant voltage (C.V.) and constant current (C.C.).
The output voltage can be adjusted between 0V and 30V when the device is in the constant voltage mode or C.V.-
mode. The current-limiting point (max. ± 12A) can also be set arbitrarily in this mode.
The output current can be adjusted continuously between 0 and 10A in the constant current mode.
The output current and voltage are indicated through LED displays.
2. Technical Specifications
Input Voltage : 220V ± 10%, 50Hz ± 2Hz
Output Voltage : 30VDC
Output Current : 10A (PS3010)/20A (PS3020)
Source Regulation : C.V. ≤ 2 x 10-4 + 1mV
C.C. ≤ 2 x 10-3 + 10mA
Load Regulation : C.V. ≤ 2 x 10-4 + 5mV (output current ≤ 10A)
C.V. ≤ 5 x 10-4 + 10mV (output current > 10A)
C.C. < 2 x 10-3 + 15mA (output current ≤ 10A)
C.C. < 5 x 10-3 + 20mA (output current > 10A)
Ripple : C.V. ≤ 1.5mVrms (output current ≤ 10A)
C.V. ≤ 3.0mVrms (output current > 10A)
C.C. ≤ 10mArms (output current ≤ 10A)
C.C. ≤ 15mArms (output current > 10A)
Protection : current-limiting and short-circuit protection
Indication Accuracy
a. Volt-indication : LED ± 1% ± 2 digits
b. Amp-indication : LED ± 2% ± 2 digits
Operating Temperature : 0 to 40°C, RH ≤ 90%
Dimensions : 310mm x 265mm x 165mm (PS3010)/390mm x 265mm x 165mm (PS3020)
Autonomy : 8hrs of continuous use at max. load
3. Description
3.1. Controls and Description of the Front Panel
(1) Amp-display (LED): indicates the output current.
(2) Volt-display (LED): indicates the output voltage.
(3) C.C. fine-tuning: rotary switch for the fine-tuning of the current-limiting point.
(4) C.C. adjustment: rotary switch for the adjustment of the current-limiting point.
