Siemens FS20 - 4 Protection Concept

Protection concept
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Building Technologies
Fire Safety
2016
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04
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04
4 Protection concept
The aim of the protection concept for surge voltage and lightning is to take
appropriate measures to prevent damage to buildings and equipment.
Surge voltages are for example caused by the following events:
● Switching operations in the power supply unit
● Switching high inductive or capacitive loads
● Electrostatic discharge
● Lightning involving direct strikes in buildings, strikes on a long-distance line or
sheet lightning
NOTICE
There is no protection concept or no proper protection concept
Damage resulting from inaction or lack of suitable measures
● Have protection categories defined by certified specialists
●
Risk assessment by qualified spec
ialist
Protection concept for surge voltage and lightning
The aim of the protection concept is to gradually reduce surge voltage to a safe
level. This is achieved as follows:
● Nested protective zones are formed around a protected room. These are
named in the protection concept.
● The protection concept includes all connections such as lines, cables, filters,
etc., within a protective zone limit.
● All connections are analyzed and protection categories defined.
● The installation, earthing, equipotential bonding, and shielding are defined.
● The necessary measures and the components needed for this are stated.
● Appropriate measures are taken to equip the connections between the
protective zones.