3B Scientific DC Power Supply User Manual

3B SCIENTIFIC

®

DC Power Supply 1.5-15 V, 1.5 A (115 V, 50/60 Hz)
DC Power Supply 1.5-15 V, 1.5 A (230 V, 50/60 Hz)

1003559 (115 V, 50/60 Hz)
1003560 (230 V, 50/60 Hz)

Instruction Sheet

04/012 ELWE/ALF

PHYSICS

1 Output socket, positive
2 Output socket, negative
3 Indicator LED, ON
4 Adjusting knob for output

voltage
5 Voltage display
6 On/off switch

1. Safety instructions

The DC power supply unit conforms to the
safety regulations for electrical measuring, con­trol, monitoring and laboratory equipment, as
specified under DIN EN 61010, section 1, and is
designed to be classified as protection class I
equipment. It is intended for operation in a dry
environment as this is suitable for the operation
of electrical equipment and systems.

Safe operation of the equipment is guaranteed,
provided it is used correctly. However, there is
no guarantee of safety if the equipment is used
in an improper or careless manner. If it is
deemed that the equipment can no longer be
operated without risk (e.g. visible damage has
occurred), the equipment should be switched off
immediately and secured against any unin­tended use.

Caution: the low-voltage output of the

power supply is not surge-proof if exposed to
external voltages of more than 100 V with re­spect to earth.

• When using the equipment in conjunction

with other power supplies, e.g. for operating
electron tubes, be careful that no voltages in
excess of 100 V with respect to earth are
present at the outputs.

• Before putting the DC power supply unit into

operation, confirm that the specifications
printed on the rear side of the housing are
compatible with the local mains voltage.

• Before putting the DC power supply unit into

operation, check the housing for any dam­age. In the event of any malfunc­tion/operational defect or visible damage,

1

switch off the unit immediately and secure it
from unintentional use.

• Connect the equipment only to sockets with

an earthed neutral.

• Before making any connections, check the

experiment leads for damaged insulation
and exposed wires.

• Replace any blown fuses only with new

ones that match the specifications stated on
the rear of the housing.

• Never short the fuse or the fuse holder.

• Never cover the air vents and heat sink at

the rear of the housing. These are neces­sary in order to ensure sufficient circulation
of air required for cooling the components
inside the equipment.

• The equipment may only be opened/repaired

by qualified and trained personnel.

• Never switch on the power supply unit im-

mediately after it has been brought from a
cool environment into a warm environment.
The condensed water formed on account of
a sudden change of temperature can, under
unfavourable conditions, be damaging for
the equipment. Do not switch on the equip­ment without first allowing it to attain ambi­ent temperature.

• Never operate power supply units unat-

tended or without supervision.

2. Description

The 1.5-15 V DC power supply unit provides a
continuous DC voltage which can be regulated
between 1.5 V and 15 V at a current of 1.5 A.
The power supply unit is equipped with an elec­tronic current limiting system and a thermal pro­tection mechanism. The DC power supply unit
has a built-in mains fuse which is accessible
only after the equipment has been opened (see
“Safety instructions”).

If operating for a long period at maximum cur­rent and low output voltage or when short­circuited, the equipment’s heat sink becomes
very hot. When the heat sink has exceeded a
critical temperature, the equipment shuts off
automatically. After a cooling period of approx.
2-3 minutes, the equipment simply has to be
switched off and on again, after which it is once
again operational.

The power supply 1003559 is for operation with
a mains voltage of 115 V (±10%), and the unit
1003560 is for operation with a mains voltage of
230 V (±10%).

3. Technical data

Mains voltage: see rear
Wattage: max. 40 W
Output voltage: 1.5-15 V DC
Output current: 0-1.5 A

Ripple voltage U: 10 mVrms

Mains fuse: see rear
Dimensions: 110 x 80 x 150 mm

3

Weight: approx. 1.5 kg

4. Operation

Obtaining a DC voltage

• Connect the unit to the mains supply. Turn

the voltage control knob fully to the left.

• Connect the load to the output sockets.

• Press the mains switch; the indicator LED

lights up.

• Set the required voltage using the adjusting
knob for output voltage.

5. Care and maintenance

• Before cleaning the equipment, disconnect it

from its power supply.

• Use a soft, damp cloth to clean it.

6. Disposal

• The packaging should be disposed of at

local recycling points.

• Should you need to dispose of the equip-

ment itself, never throw it away in normal
domestic waste. Local regulations for the
disposal of electrical equipment will apply.

Elwe Didactic GmbH ▪ Steinfelsstr. 5 ▪ 08248 Klingenthal ▪ Germany ▪ www.elwedidactic.com

3B Scientific GmbH ▪ Rudorffweg 8 ▪ 21031 Hamburg ▪ Germany ▪ www.3bscientific.com

Technical modifications are possible

© Copyright 2012 3B Scientific GmbH