The decoupling of
basic and fine protection achieved when the line
section between basic and fine protection device at
least five metres. They serve arrest light-
ning current with the waveform 10/350 coupled
from outside the building via the data cables.: 5081 0
1 3
2
Unprotected side
Protection class, fine protection
Protected side/device
LPZ final code: fine protection, green colour
coding
Fine protection
The fine protection devices use transzorb diodes to
limit surge impulses.: 5082 0
PROTECTED
LINE COMBI PROTECTION
1 3
2
Unprotected side
Protection class, combi protection
Protected side/device
LPZ final code combi-protection, blue colour
coding
Combined protection
The combined protection devices limit the transients
with gas-discharge protectors transzorb diodes,
which are decoupled through resistors.DATA DEFENDER RJ45 S-E100 4-B
LINE PROTECTED
BASIC PROTECTION
UN 110V
No. Fine protection devices should al-
ways installed the device protected itself.
NET DEFENDER ND-CAT 6A/EA
LINE PROTECTED
FINE PROTECTION
UN V
No. The devices are earthed with
powerful gas discharge protectors.
TBS
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Chapter The internal lightning protection system
.
Koax B-E2 MF-C
UN V
No. The
devices can installed basic protection where the
cables enter the building, fine protection directly
before the terminal.: 5081 1
1 3
2
Unprotected side
Protection class, basic protection
Protected side/device
LPZ final code basic protection, red colour
coding
Basic protection
Basic protection devices are lightning arrestors of
class that can directly arrest lightning currents and
surge voltages. These devices are installed where
the lines enter the buildings. the latter case, should be
noted that the distance the device needing protec-
tion should not exceed metres. These corres-
pond classes and categories and C2
as defined the standard DIN 61643-21. The single-stage protection circuit con-
tains gas arrestors. does, then a
further fine protection device should installed be-
fore the device
