Velleman LABPS3005N User Manual

LABPS3005N
V. 05 – 18/05/2022 4 ©Velleman Group nv
• Damage caused by disregard of certain guidelines in this manual is not covered by
the warranty and the dealer will not accept responsibility for any ensuing defects or
problems.
• Keep this manual for future reference.
• The device enjoys optimal protection thanks to the short-circuit protection and the
current-limiting point. The power loss in case of short circuit is limited thanks to the
protection circuit that controls the power loss of the transistors in the power supply.
This feature keeps the device from being damaged. The device will automatically go
into the current-limiting mode, which means that the current-limiting point (max. ±
12 A) is installed. Nevertheless, the short circuit should be repaired as soon as
possible in order to prevent wear and unnecessary power consumption.
• The output will be cut off if the short-circuit occurs between the positive and the
negative output terminal, which prevents power loss. The device will resume normal
operation when the problem has been solved.
• This device is a large power source. The device should be well-ventilated when
working at max. power in order to avoid overheating. Keep in mind that the surface
of the heat sink is too hot to touch when the device is being used at max. power.
• Improper operation of the device and an excessive ambient temperature may cause
certain internal components to fail. When this happens, the actual output voltage
may exceed the rated output voltage. Proceed with caution when using this device
and avoid unnecessary damage to the load.
4. Overview
Refer to the illustrations on page 2 of this manual.
1
current indication
5
grounding terminal
2
current adjustment knob
6
output terminal (+)
3
power switch
7
voltage adjustment knob
4
output terminal (-)
8
voltage indication
5. Operation
Introduction
The device 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 0 V and 30 V when the device is in the
constant voltage mode or C.V.-mode. The current-limiting point (max. ± 5 A) can also
be set arbitrarily in this mode.
The output current can be adjusted continuously between 0 and 5 A in the constant
current mode.
The output current and voltage are indicated through LED displays.
Using the Device as a C.V. Source
1. Switch on the device.
2. Turn the current adjustment knob fully clockwise to the maximum.
3. Turn the voltage adjustment knob to obtain a voltage that is close to the desired
value. Use the fine-tune knob if desired (where applicable). The C.V. indicator
lights on the display.

Velleman LABPS3005N Specifications

Power

input voltage	220 V~ (± 10 %), 50/60 Hz
output voltage	0-30 VDC
current	0-5 A
power	150 W max.
cos Phi	0.82
ripple voltage	≤ 1.0 mV (rms)
ripple current	3 mA (rms)

Operating Environment

operating temperature	0 °C to +40 °C, < 90 % relative humidity
max. hours continuous at full load	8 hours

Weight and Dimensions

dimensions	117 x 190 x 270 mm
weight	4.8 kg