User Manual

3B Scientific GmbH ▪ Rudorffweg 8 ▪ 21031 Hamburg ▪ Germany ▪ www.3bscientific.com
Subject to technical amendments
© Copyright 2012 3B Scientific GmbH
2. Description
The transformer with rectifier provides small
voltages, switchable in four voltage steps, with
outputs in the form of AC voltages or full-wave
rectified DC voltages.
The maximum load for each output is 3 A. Both
outputs are protected against short-circuiting.
The 1003315 transformer is for operation with a
mains voltage of 115 V (±10%), and the
1003316 unit is for operation with a mains volt-
age of 230 V (±10%).
3. Technical data
Mains voltage: see rear of housing
Output voltage: 3 / 6 / 9 / 12 V AC/DC
Maximum load: 3 A
Primary fuse: see rear of housing
Secondary fuse: Polyswitch
Short-circuit proofing: Available for single de-
vice.
It is not permissible to
cascade multiple de-
vices and short them
out. This causes overlo-
ading of the polyswitch.
Terminals: 4 mm safety sockets
Dimensions: 210x170x90 mm
3
ap-
prox.
Weight: 2.6 kg approx.
4. Operation
4.1 General information
• The AC and DC outputs cannot be used at
the same time
• Before connecting the plug to the power
supply, set the voltage selector switch to
zero.
4.2 Obtaining an AC voltage
• Connect the load to the AC output sockets
(1).
• Set the voltage selector switch (3) to give
the required voltage; if necessary connect a
voltmeter in parallel with the load.
• Connect the unit to the mains supply.
4.3 Obtaining a DC voltage
• Connect the load to the DC output sockets
(2).
• Set the voltage selector switch (3) to give
the required voltage; if necessary connect a
voltmeter in parallel with the load.
• Connect the unit to the mains supply.
4.4 Changing the fuse
• Unplug the mains plug.
• Unscrew the fuse holder on the rear side of
the housing with a screwdriver.
• Replace the fuse and reinsert the holder in
its socket.
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 do-
mestic waste. Local
regulations for the dis-
posal of electrical
equipment will apply.