Protective Cages; Installation Of The Protective Cages; Grounding Of The Emc-Protective Cage Fdbz294 - Siemens FDOOT241-9 Technical Manual

5.11

Protective cages

5.11.1

Installation of the protective cages

5.11.2

Grounding of the EMC-protective cage FDBZ294

Building Technologies
Fire Safety & Security Products
Protective cage DBZ1194 protects the detector against mechanical damage.
EMC-protective cage FDBZ294 protects the detector against mechanical damage
and electromagnetic fields.
The protective cages can only be installed on the base attachment humid FDB293.
Installation of the protective cages
1 Base attachment humid
2 Break out and screw protective cage
on firmly
3 Protective cage
The EMC-protective cage must be connected to the shielding of the detector line
cable at the flat plug.
If the detector line cable is not shielded then the EMC-protective cage must be
grounded using a separate cable.
For optimum grounding in the presence of powerful electromagnetic fields, the
ground line must be shorter than 10 m and have a cross section of at least
1.5 mm .
2
See also
Installation of the protective cages [
Mounting / Installation
4 Flat plug 6.3 x 0.8 mm
5 EMC-protective cage
67]
67
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16.04.2009