Siemens FS20 - Protection Elements

Other project planning steps
Protection elements
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Building Technologies
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Fire Safety
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14.4 Protection elements
Electro-magnetic influence and over-voltages may lead to faults in the fire
detection installation. Protection elements minimize these faults.
All ↑ stations are equipped with fine protection and EMC filters in the factory. This
applies to:
● All inputs and outputs
● All lines leading away from the stations
If need be, protection elements for primary and intermediate protection must be
added by the costumer. These elements must be mounted at the zone limits (EMC
zone), not inside the stations.
Other possible measures by the customer
● Surge protectors must be fitted in installations that are at particular risk of
lightning.
● In the case of excessive HF mains overlapping, mains filters must be installed
in the feed line.
Lightning protection and voltage surge protection
NOTICE
Lightning protection and voltage surge protection is not present or is not present
to a sufficient degree.
Disclaimer in the event of damage.
● Appoint certified specialists.
● Implement measures and recommendations from document A6V10225306.
● Note the following conditions.
●
If measures are not carried out, the new liability situation must be documented
in line with the law, e.g. including the customer's signature.
● In accordance with the Product Liability Act, the customer and/or operator of
the fire detection installation is considered a layperson who cannot evaluate the
need for addition lightning protection and voltage surge protection measures for
fire detection installations. The installer of the fire detection installation must
therefore draw the attention of the customer and/or operator of the fire
detection installation to this requirement.
● Lightning protection and voltage surge protection equipment for electronic
devices and installations may be planned and installed only by certified
specialists.
● The customer is responsible for arranging equipment for lightning protection
and voltage surge protection.
● All local standards, guidelines and specifications must be observed when
carrying out measures.
You will find detailed
information about lightning protection and voltage surge
protection in document A6V10225306.
Installation
Twisted cables are recommended for external supply lines and lines leading to
alarm devices.