3B SCIENTIFIC
®
PHYSICS
1
DC Power Supply 0 – 20 V, 0 – 5 A (115 V, 50/60 Hz)
DC Power Supply 0 – 20 V, 0 – 5 A (230 V, 50/60 Hz)
1003311 (115 V, 50/60 Hz)
1003312 (230 V, 50/60 Hz)
Instruction sheet
03/12 ALF
1 Ventilation
slots
2 Current and voltage display
3 LED display for constant cur-
rent source (cc)
4 Current
regulator
5 Earthing
socket
6 DC voltage output
7 Fine regulator for DC voltage
8 Mains on/off switch
9 Coarse regulator for DC voltage
10 LED display for constant volt-
age source (cv)
1. Safety instructions
The DC Power Supply 0 – 20 V, 0 – 5 A conforms to
all safety regulations for electrical measuring, con-
trol, monitoring and laboratory equipment, as
specified under DIN EN 61010, Section 1, and the
equipment has been designed to meet protection
class I. It is intended for operation in a dry envi-
ronment, 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 may be assumed for any reason that non-
hazardous operation will not be possible (e.g. visi-
ble 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 super-
vised by qualified personnel.
Caution: the low-voltage output of the
power supply is not surge-proof if exposed to ex-
ternal voltages of more than 100 V with respect to
earth.
•
When using the equipment in conjunction with
other power supplies, e.g. for operating elec-
tron 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 malfunc-
tion/operational defect or visible damage,
switch off the unit immediately and secure it
against unintended use.
