Recommendations for the power supply of audio systems in conjunction with the
DFS F Audio, with a view to improving sound:
The following recommendations must only be implemented by an authorised and
qualified electrical specialist, who is familiar with the applicable national installation
regulations. The recommendations exclusively refer to the circuit for connecting an
audio system. Priority should always be given to ensuring that electrical installations
are correctly implemented in line with the applicable installation regulations, over
any sound objectives.
»
Use an outer conductor (L1, L2 or L3) that is used by as few other electrical
consumers (e.g. lights or household appliances) as possible.
»
If possible, use a separate installation cable from the distribution installation
to the installation socket to which the audio system is connected. No further
electrical consumers should be connected to this circuit.
»
When using multiple residual current circuit-breakers in a distribution installation,
the DFS F Audio should be connected on the input side, if possible directly, to the
connection cables from the meter board. Further residual current circuit-breakers
can then be connected on the input side, e.g. with suitable busbars.
»
Connect the phase conductor to which your audio system is connected to the
output side (load side) of the DFS F Audio via a suitable overcurrent protective
device.
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Through use of a busbar fork, it is also possible to connect to the upper wiring level
for the DFS F Audio. This refines the sound image somewhat but does reduce the
volume a little.
»
When connecting the neutral conductor to which your audio system is connected,
avoid having a lot of terminal positions in the neutral conductor path. If necessary,
it is possible to connect the neutral conductor directly to the neutral conductor
pole terminal on the output side (load side) of the DFS F Audio instead of to
the neutral conductor rail on the distribution board. This adds volume and
authenticity to the audio image without losing precision.
»
If the installation cable to your audio system in the distribution installation needs
to be extended or connected to installation terminals, avoid using ferromagnetic
materials (e.g. copper-covered steel) as direct live parts. However, parts that
are not directly conductive that are used to mechanically secure electrical
conductors, e.g. clamping screws made from ferromagnetic material, have no
adverse effect on sound.
Hints:
»
The audio image may initially seem rather unsettled following installation and
wiring work on the distribution board. This will subside after a few operating
hours.
»
In comparison to standard residual current circuit-breakers, the DFS F Audio
provides a stable and clear audio image, without lessening the volume or
musicality. The sound is, however, affected by many factors relating to an audio
system’s power supply and, of course, by the components in an audio system and
can therefore vary.
»
If mains filters are in place at the output side (load side) of the DFS F Audio, in
many cases, depending on the type of filter, it may be necessary to disconnect
them from the mains if the audio image is clearly defined but too thin.
Break-in time of the DFS F Audio:
»
Immediately after it is first commissioned, the audio image can seem more
lightweight, particularly in the low range.
»
After around two to three operating hours, the audio image increasingly gains
in volume.
»
The full potential of the sound is achieved after around 50–100 operating hours.
An audio system does not necessarily have to be active during this time.
»
The residual current protection function of the DFS F Audio is of course available
immediately after installation and at all times.
Wiring diagrams
1 3
2 4
N
3
5
7
N
4
6
8
1
3
5
N
2
4
6
N
S
two-pole
S
four-pole,
neutral conductor on
the left
S
four-pole,
neutral conductor on
the right
Installation and operating instructions
for two-/four-pole residual current circuit-breakers
in the DFS F Audio series
These installation and operating instructions are aimed at qualified
electrical specialists. The installation of devices of this type is not
appropriate for electrical laypersons due to the considerable potential
dangers. These installation and operating instructions must be
retained, so that they can be referred to at a later stage. The operator
of the electrical installation must be informed about the use and
function of this protective device.
Application instructions and warnings
The following notes and warnings must be observed in order to ensure safe operation:
1.
Devices with visible damage must not be installed or used.
2. Operation must only occur under normal ambient conditions free of corrosive
gases in order to preserve the correct tripping function in the long term.
Corrosive gases are chlorine, ammonia and sulphurous air, for example.
3. The user must be made aware of regular function testing using the test key T.
4. The function test with the test key is not a substitute for regular testing of the
electrical system.
5.
Erroneous tripping due to operation related leakage currents or atmospheric
interference cannot be ruled out with absolute certainty. The consequences must
be considered and countermeasures taken where necessary.
6.
If the RCCB cannot be switched on, or if the consumer network is not connected,
the device must be replaced.
7. Disposal is subject to the statutory regulations of the European Union (waste of
electrical and electronic equipment (WEEE)).
Further information and product data sheets can be found at www.doepke.de.
Intended use:
DFS 2 and DFS 4 series protective devices are residual current circuit-breakers
without integrated overcurrent protection. They provide protection through
automatic switch-off in electrical systems, e.g. in accordance with VDE 0100 part
410. They meet the requirements for residual current protection in accordance with
their characteristics on the name plate. The switch-off function can be tested using
a push-button which is also accessible to laypersons. Regular testing can increase
the endurance of the circuit-breaker, as the mechanism of the latch is moved when
tripped in addition to the electrical test.
Electrical connection and installation:
The electrical connection must be as shown in the wiring diagram and must comply
with the terminal designation on the device. If the device is to be operated without
using all poles, it is essential (in order to ensure the connection is correct) to observe
the position of the test key as per the wiring diagram and the operating voltage
range of the test circuit in accordance with the data sheet. DFS 4 devices have a
N-left design as standard. N-right devices have a ‘R’ in their designation. The device
must be installed on a mounting rail (TS 35) according to DIN EN 60715 in distribution
boards that have to ensure protection against direct contact (which may be required
depending on the location of use) and protection against environmental influences.
Testing and functional check
A simple function test with the assistance of test key T should be carried out after
the mains voltage and the circuit-breaker are switched on. When the key is pressed,
the DFS 2/DFS 4 must disconnect without delay; the toggle is then in centre position.
Resetting to position ‘1’ is only possible if the toggle has first been moved down to
position ‘0’. The operation indicator beneath the toggle indicates the status of the
contacts: red = closed, green = open.
This test must be carried out at least every six months where the device is used as
intended and must be repeated every working day for non-stationary systems
according to the regulation. If tripping does not occur, the device must be replaced
immediately. The operator must be informed of this. All additional tests are covered
by the prescribed acceptance test. Tests should be carried out according to DGUV
Regulation 3 (BGV A3) depending on the location. The insulation test should be
carried out using test devices according to DIN EN 61557-2.
Guarantee
All professionally installed, unaltered devices are covered by warranty during the
statutory guarantee period from the day of purchase by the end user. The guarantee
is not applicable to damage incurred during transport or caused by short-circuit,
overloading or improper use. Should any defects in workmanship or material
be discovered within the warranty period, the company will provide repair or
replacement free of charge. The warranty will be rendered null and void if the device
is opened without authorisation.
Doepke
3930292
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11/2019
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Doepke Schaltgeräte GmbH, Stellmacherstraße 11, D-26506 Norden
DE EN