Velleman LABPS3005N Manual Del Usuario página 4

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. Features

dual LED display for voltage and current

coarse and fine adjustments of voltage and current

voltage or current-limiting

output connectors: insulated safety plugs

low noise temperature controlled fan

4 digit display

setting lock function

constant voltage / constant current

10 mV / 1 mA setting resolution

protection modes:
fuse 3.15 A / 250 V
o
over-current protection
o
over-temperature protection (95 °C)
o

fuse-protected
5. Overview
Refer to the illustrations on page 2 of this manual.
1 current indication
2 current adjustment knob
3 power switch
4
output terminal (-)
6. Operation
6.1 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.
6.2 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.
6.3 Using the current-limiting adjustment in C.V. mode
1. Switch on the device.
2. Turn both the current adjustment knobs fully anticlockwise to the minimum, and the voltage
adjustment knobs fully clockwise to the maximum.
V. 03 – 30/10/2017
LABPS3005N
5 grounding terminal
6 output terminal (+)
7 voltage adjustment knob
8
voltage indication
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