Devolo dLAN 200 AVpro - Power Supply Systems in Multiple Dwelling Units (Centralised Meter Arrangement); Fig. 5-1: Typical Dlan Networking over the Power Network in Single-Family Homes

devolo dLAN® 200 AVpro Project Manual
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Fig. 5-1: Typical dLAN networking over the power network in single-family
homes
You should note that a phase coupler also couples interference from one
phase to the other. In this case, the dLAN signal would actually be
impaired. This is why you should always test the signal without a phase
coupler first!
If standard electric meters are installed (induction or eddy curr
ent meter,
recognisable by their discs, which rotate a different speeds depending on the level of
consumption), they form the boundary of the dLAN system, since the dLAN signals
are attenuated strongly due to the technical design. These meters are not firewalls
however! In contrast, electronic electricity meters, which are being installed more
and more these days, do not attenuate the dLAN signal.
Important: devolo AG recommends using a non-standard network
password to secure the dLAN network.
5.2 Power supply systems in multiple dwelling units (centralised
meter arrangement)
What is referred to as a centralised meter arrangement is frequently used in multiple
dwelling units. In a centralised meter arrangement, dLAN signals may not just