3B SCIENTIFIC PHYSICS 1003311 Instruction Sheet

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3B SCIENTIFIC

DC Power Supply 0 – 20 V, 0 – 5 A

1003311 (115 V, 50/60 Hz)

1003312 (230 V, 50/60 Hz)

Instruction sheet

08/22 HJB

1. Safety instructions

The DC Power Supply 0 – 20 V, 0 – 5 A con-

forms to all safety regulations for electrical

measuring, control, monitoring and laboratory

equipment, as specified under DIN EN 61010,

Section 1, and the equipment has been de-

signed to meet protection class I. It is intended

for operation in a dry environment, suitable for

the operation of electrical equipment and sys-

tems.

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 may be assumed for any reason that non-

hazardous operation will not be possible (e.g.

visible damage), the equipment should be

switched off immediately and secured against

any unintended use.

In schools and other educational institutions,

the operation of the power supply unit must be

supervised by qualified personnel.

Caution: the low-voltage output of the

power supply is not surge-proof if ex-

posed to external voltages of more

than 100 V with respect to earth.

PHYSICS

10 LED display for constant voltage source (cv)



Ventilation slots

Current and voltage display

LED display for constant current source (cc)

Current regulator

Earthing socket

DC voltage output

Fine regulator for DC voltage

Mains on/off switch

Coarse regulator for DC voltage g

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 using the power supply unit for the

first time, confirm that the specifications

printed on the rear side of the housing are

compatible with the local mains voltage.

Before using the power supply unit for the

first time, check the housing and the mains

lead for any damage. In the event of any

malfunction/operational defect or visible

damage, switch off the unit immediately and

secure it against unintended use.

The instrument may only be connected to

the mains via a socket that has an earth

connection.

Before making any connections, check the

experiment leads for damaged insulation

and exposed wires.

Replace a faulty fuse only with one match-

ing the specifications stated at the rear of

the housing.

Disconnect the equipment from the mains

before replacing a fuse.

Never short the fuse or the fuse holder.