housing, terminals with this rated surge
voltage are used (e. According Supplement DIN VDE
0185-305-3, surge protection the side also
necessary. Which arrestors should used?
Answer: protection against lightning impacts and
switched surge voltages, which ingress into the sys-
tem via the supply line, type SPDs must installed
at the feed point/building entry."
Summary: Surge protection pre-
ventive fire protection!
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Chapter The internal lightning protection system
.
3.
In the case outdoor line infeed lightning
protection system according VDE 0185-305, type 1
SPDs should used for lightning protection equipo-
tential bonding.
In addition, DIN VDE 0100-443 recommends the use
of surge arrestors for interfaces. If, within building, switching surge voltages
are generated and cables leave the building, then
there the necessity checking further measures
and documenting the result. Must additional measures taken against surge
voltages the case terminals sub-distributors
which are cable length more than metres
from the last surge arrestor?
Answer: The measures for sensitive terminals sub-
distributors which are cable length more than
10 from the last surge arrestor should agreed
individually between the installation engineer and the
client. DIN VDE 0100-
443 describes surge voltages from atmospheric influ-
ences impacts switching actions.
2. Must new systems those erected later
date protected?
Answer: system must erected according to
DIN VDE 0100-712.
Quote from VDE 0100-443: "The
erection surge protection
devices (SPDs) should ensure a
voltage limitation according the
insulation coordination, order to
avoid dangerous spark formation
and resulting fires. household appliances, com-
puters, tools, etc.).TBS
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Questions about DIN VDE 0100-443/-534
1. necessary erect the surge
protection the side according DIN VDE
0100-443 and check for and communications
technology.g. What now obligatory according DIN VDE
0100-443?
Answer: DIN VDE 0100-443 prescribes surge ar-
restors front resources surge voltage category
I and II.
4
