Brochure/Catalogue

Surge protection installation instructions
VDE 0100-534 now states that there should be a gap of
≤ 0.5 m between the SPD in the vicinity of the installation
location and the direct connection to N or PE.
IEC 60364-5-534 species that the earth must be
established from the SPD to the equipotential bonding rail or
to PE – whichever is the shortest connection.
Both cables are specied in the VDE.
During the insulation test, the SPD must be isolated from the
facility for the duration of the measurement.
Establishing SPDs after an RCD is only permitted under
special preconditions.
Protection against surge currents
L1
L2
L3
PEN
F1
F2
PU
The F2 fuse ensures protection against SPD short
circuits. These fuses should be chosen based on the rated
currents listed in the installation instructions from the SPD
manufacturer. The F2 fuse does not need to be used when
the characteristics of the F1 fuse (which is part of the
electrical facility) correspond to a combination of the rated
currents specied by the SPD manufacturer.
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The basics of lightning and surge protection
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