DC Power suplies

The concept of laboratory DC voltage sources, which has been proven over the years, is designed to power DC electrical devices in industry and education. The robust metal construction, linear regulation and constancy of parameters determine them for use even in the most demanding tasks.

Characteristics of laboratory DC voltage sources

Control of individual outputs with separate buttons.
LED signaling of switching on outputs and functional states.
Intermittent warning sound signaling of current limitation.
Optical signaling of current limitation with a decimal point on the ammeter display.
Large, readable, red LED displays.
“Coarse” and “fine” voltage adjustment using a potentiometer.
Automatic cooling fan.
Robust metal chassis.
A transformer designed for continuous power supply to the load.

P130R51D

1x 0 ÷ 30 V / 4 A; 1x 5 V / 3 A

P230R51D

2x 0 ÷ 30 V / 4 A; 1x 5 V / 3 A

L140R51D

1x 0 ÷ 40 V / 3 A; 1x 5 V / 3 A

L240R51D

2x 0 ÷ 40 V / 3 A; 1x 5 V / 3 A

V130R50D

1x 0 ÷ 30 V / 10 A

V140R50D

1x 0 ÷ 40 V / 10 A

Q130R50D

1x 0 ÷ 30 V / 20 A

M130R50D

1x 0 ÷ 30 V / 40 A

P130R51D

1x 0 ÷ 30 V / 4 A; 1x 5 V / 3 A

Technical parameters

Mains voltage	230 V / 50 Hz
Voltage adjustable	1 x 0 ÷ 30 V
Adjustable current	1 x 0,1 ÷ 4,0 A
Fixed voltage	5 V
Fixed current	3 A
Ripple typical	< 2mV
Ripple maximum	10 mV
Voltage stability for mains change +6/-10%	approx. 0,05%
Current stability for mains change +6/-10%	approx. 0,05%
Type of measuring devices	888 LED
Number of measuring devices	2
Measurement accuracy class	2
Connection of adjustable sources into a symmetrical source	NO
Electronic radiator thermostat with fan	YES
Output state memory before shutdown	YES
Total power consumption	160 W
Colour	black
Dimensions in mm (h, w, d – approx.)	172 x 164 x 282
Weight	approx. 6,8 kg
Warranty	24 months

P230R51D

2x 0 ÷ 30 V / 4 A; 1x 5 V / 3 A

Technical parameters

Mains voltage	230 V / 50 Hz
Voltage adjustable	2 x 0 ÷ 30 V
Adjustable current	2 x 0,1 ÷ 4,0 A
Fixed voltage	5 V
Fixed current	3 A
Ripple typical	< 2mV
Ripple maximum	10 mV
Voltage stability for mains change +6/-10%	approx. 0,05%
Current stability for mains change +6/-10%	approx. 0,05%
Type of measuring devices	888 LED
Number of measuring devices	4
Measurement accuracy class	2
Connection of adjustable sources into a symmetrical source	YES
Electronic radiator thermostat with fan	YES
Output state memory before shutdown	YES
Total power consumption	320 W
Colour	black
Dimensions in mm (h, w, d – approx.)	172 x 244 x 282
Weight	approx. 10 kg
Warranty	24 months

L140R51D

1x 0 ÷ 40 V / 3 A; 1x 5 V / 3 A

Technical parameters

Mains voltage	230 V / 50 Hz
Voltage adjustable	1 x 0 ÷ 40 V
Adjustable current	1 x 0,1 ÷ 3,0 A
Fixed voltage	5 V
Fixed current	3 A
Ripple typical	< 2mV
Ripple maximum	10 mV
Voltage stability for mains change +6/-10%	approx. 0,05%
Current stability for mains change +6/-10%	approx. 0,05%
Type of measuring devices	888 LED
Number of measuring devices	2
Measurement accuracy class	2
Connection of adjustable sources into a symmetrical source	NO
Electronic radiator thermostat with fan	YES
Output state memory before shutdown	YES
Total power consumption	160 W
Colour	black
Dimensions in mm (h, w, d – approx.)	172 x 164 x 282
Weight	approx. 6,8 kg
Warranty	24 months

L240R51D

2x 0 ÷ 40 V / 3 A; 1x 5 V / 3 A

Technical parameters

Mains voltage	230 V / 50 Hz
Voltage adjustable	2 x 0 ÷ 40 V
Adjustable current	2 x 0,1 ÷ 3,0 A
Fixed voltage	5 V
Fixed current	3 A
Ripple typical	< 2mV
Ripple maximum	10 mV
Voltage stability for mains change +6/-10%	approx. 0,05%
Current stability for mains change +6/-10%	approx. 0,05%
Type of measuring devices	888 LED
Number of measuring devices	4
Measurement accuracy class	2
Connection of adjustable sources into a symmetrical source	YES
Electronic radiator thermostat with fan	YES
Output state memory before shutdown	YES
Total power consumption	320 W
Colour	black
Dimensions in mm (h, w, d – approx.)	172 x 244 x 282
Weight	approx. 10 kg
Warranty	24 months

V130R50D

1x 0 ÷ 30 V / 10 A

Technical parameters

Mains voltage	230 V / 50 Hz
Voltage adjustable	1 x 0 ÷ 30 V
Adjustable current	1 x 0,1 ÷ 10,0 A
Fixed voltage	–
Fixed current	–
Ripple typical	< 2mV
Ripple maximum	10 mV
Voltage stability for mains change +6/-10%	approx. 0,05%
Current stability for mains change +6/-10%	approx. 0,05%
Type of measuring devices	888 LED
Number of measuring devices	2
Measurement accuracy class	2
Connection of adjustable sources into a symmetrical source	NO
Electronic radiator thermostat with fan	YES
Output state memory before shutdown	YES
Total power consumption	320 W
Colour	black
Dimensions in mm (h, w, d – approx.)	172 x 244 x 282
Weight	approx. 9,8 kg
Warranty	24 months

V140R50D

1x 0 ÷ 40 V / 10 A

Technical parameters

Mains voltage	230 V / 50 Hz
Voltage adjustable	1 x 0 ÷ 40 V
Adjustable current	1 x 0,1 ÷ 10,0 A
Fixed voltage	–
Fixed current	–
Ripple typical	< 2mV
Ripple maximum	10 mV
Voltage stability for mains change +6/-10%	approx. 0,05%
Current stability for mains change +6/-10%	approx. 0,05%
Type of measuring devices	888 LED
Number of measuring devices	2
Measurement accuracy class	2
Connection of adjustable sources into a symmetrical source	NO
Electronic radiator thermostat with fan	YES
Output state memory before shutdown	YES
Total power consumption	470 W
Colour	black
Dimensions in mm (h, w, d – approx.)	172 x 244 x 282
Weight	approx. 10,3 kg
Warranty	24 months

Q130R50D

1x 0 ÷ 30 V / 20 A

Technical parameters

Mains voltage	230 V / 50 Hz
Voltage adjustable	1 x 0 ÷ 30 V
Adjustable current	1 x 0,1 ÷ 20,0 A
Fixed voltage	–
Fixed current	–
Ripple typical	< 2mV
Ripple maximum	10 mV
Voltage stability for mains change +6/-10%	approx. 0,05%
Current stability for mains change +6/-10%	approx. 0,05%
Type of measuring devices	888 LED
Number of measuring devices	2
Measurement accuracy class	2
Connection of adjustable sources into a symmetrical source	NO
Electronic radiator thermostat with fan	YES
Thermal fuse of the cooler	YES
Output state memory before shutdown	YES
Total power consumption	620 W
Colour	black
Dimensions in mm (h, w, d – approx.)	172 x 360 x 282
Weight	approx. 19 kg
Warranty	24 months

M130R50D

1x 0 ÷ 30 V / 40 A

Technical parameters

Mains voltage	230 V / 50 Hz
Voltage adjustable	1 x 0 ÷ 30 V
Adjustable current	1 x 0,2 ÷ 40,0 A
Fixed voltage	–
Fixed current	–
Ripple typical	< 2mV
Ripple maximum	10 mV
Voltage stability for mains change +6/-10%	approx. 0,05%
Current stability for mains change +6/-10%	approx. 0,05%
Type of measuring devices	888 LED
Number of measuring devices	2
Measurement accuracy class	2
Connection of adjustable sources into a symmetrical source	NO
Electronic radiator thermostat with fan	YES
Thermal fuse of the cooler	YES
Output state memory before shutdown	YES
Total power consumption	620 W
Colour	black
Dimensions in mm (h, w, d – approx.)	322 x 360 x 282
Weight	approx. 26 kg
Warranty	24 months

In detail

Soft-start

The outputs of the sources are activated after the laboratory source is switched on and after the test has been performed. The connected devices are thus protected against possible voltage peaks arising during start-up.

Control of individual outputs with separate buttons

Each output of the laboratory source is controlled by a separate button. Individual outputs can be turned off / on regardless of the state of the other outputs. The switching on of the outputs is signaled by separate LED lights above the individual outputs (only for sources with a double output).

Intermittent warning sound signaling of current limitation

At the moment when the output current of the adjustable sources starts to be limited, this condition is signaled by an intermittent current limitation warning signal. The volume of the sound signaling can be adjusted or turned off for the current source mode.

Optical signaling of current limitation

At the moment when the output current of adjustable sources begins to be limited, this condition is signaled by a flashing decimal point on the relevant ammeter.

Memory of states of outputs and functions before switching off the source

Before switching off the laboratory source, the states of the individual outputs and the connection of the outputs are stored in the internal memory of the laboratory source. When the power is turned on again, the outputs are reset to the state before the power was turned off. This feature can be disabled.