VOLTCRAFT PS 2403 Pro Bedienungsanleitung Seite 15

Series and parallel operation of Output A
and B
Dangerous voltages (greater than 35 VDC) can occur when a series
connection is made. Do not touch. Always heed the safety instruc-
tions!
General
The PS 2403 PRO power supply has an additional selection switch (18) that can be
used to connected the two outputs "OUTPUT A" and "OUTPUT B" to each other
internally.
There is then no more need to connect the output sockets with a jumper wire.
The switch has three positions for the following settings:
• INDIVIDUAL mode: Each output works separately without an internal connection.
• PARALLEL mode: Output A and B are connected in parallel (terminal "+" with "+"
and terminal "-" with "-"). The output current is doubled.
• SERIES mode: Output A and B are connected in series. The connection must be
made on terminal "A+" and on terminal "B-". The output voltage is doubled.
Series connection of Output A and B
When a series connection is made, the possible output voltage of Output A and B is
added, and may reach 80 V. The output current remains at 3 A. Because of internal
circuitry, there is no need for external connection leads.
To make a series connection, proceed as follows.
• Switch the power supply on.
• Remove all loads that are connected from the DC output sockets.
• Move the selector switch (18) to the "SERIAL" setting.
• Turn the two "AMPERE" controllers somewhat anticlockwise. This will make it
possible to adjust the voltage.
• Adjust the desired output voltage with controls "16/17" and "10/11".
• To obtain the current output voltage, add the two "Volt" displays "1" and "3".
• Connect the positive pole "+" of the load with the red measurement socket from
Output A (14) and the negative pole "-" of the load with the black socket from Out-
put B (12)
Make sure that the loads are switched off when connected to the pow-
er supply. Sparks may be generated when a load that has been
switched on is connected to the terminal screw connectors. This may
damage the terminal screw connectors as well as the connected
cables.
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= Only for use in dry interior environments.
= This equipment is CE tested and complies with the EMC directive
°
89/336/EEC and the low voltage directive 73/23/EEC.
• Electric appliances and accessories should be kept out of the reach of children!
• On commercial premises, the relevant accident prevention regulations for electri-
cal equipment must be complied with.
• In schools and training centres as well as at hobby and DIY workshops, the use of
power supplies must be supervised by adequately trained personnel in a responsi-
ble manner.
• Please make sure by all means that your hands, your shoes, your clothing, the floor
and the power supply are dry.
• Potentially lethal voltages (> 35 VDC) are generated when the outputs of one or
more power supplies are switched in series.
• Before opening it, disconnect the device from all voltage sources.
• Capacitors in the device may still be charged, even if the device has been discon-
nected from all voltage sources.
• Do not switch the power supply on immediately after it has been taken from a cold
to a warm environment. Under adverse conditions, the resulting condensation
could destroy the device. Allow the device to reach room temperature before
switching on.
• The power supply generates heat during operation. Make sure it is adequately ven-
tilated. Do not cover the ventilation apertures of the device!
• Do not leave mains power supplies and the connected consumers in operation
unattended.
• Use only fuses of the type and rated current specified. It is absolutely impermissi-
ble to use repaired fuses.
• Avoid the use of uninsulated metallic cables. Leads that are used must be suffi-
ciently resistant to voltages and must be protected from being touched on the
contact points.
• Power supply units are not designed for use on human beings or animals.
• If you have reasons to assume that safe operation is no longer possible, immedi-
ately take the device out of operation and secure it against inadvertent operation.
Reasons to assume that safe operation is no longer possible include:
- the device shows signs of visible damage
- the device no longer functions and
- has been stored for long periods under unfavourable conditions or
- has been subjected to considerable stress in transit.
• You should also heed the additional safety instructions in each chapter of these
operating instructions as well as in the operating instructions of the connected
devices.
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