5300.9677.72 - 1.11 - EN-4
Chapter 1 Safety
The transmitters themselves must be operated in lightning protection zone III areas only
(i.e. inside closed, lightning protected buildings).
The antenna output is protected against overvoltage not exceeding 2 kV. Customers must
ensure that the lightning protection fitted to their antenna systems is designed to prevent
over-high voltages reaching the transmitter.
4.5 Fire Risk
Every electrical circuit that is connected to a power supply of sufficient energy constitutes
a potential fire hazard, including radio transmitters. A fire safety concept for radio transmit-
ting equipment must therefore be established.
Operators must be trained in firefighting measures required for electrical installations and
this training must be repeated regularly. Training should satisfy the requirements of VDE
0132 and should be performed in consultation with the local fire department.
These statements apply to Germany. On-site preventive measures can reduce the danger
of fire to a large extent or prevent the spread of a fire as far as possible.
Prevention and firefighting
When the transmitter is being set up, the operator has to ensure that no flammable ma-
terials are stored in or attached to the area below or above the cable entry point.
Materials used to close openings to adjoining rooms must be flame-retardant.
Always wear the appropriate personal protective equipment (e.g. self-contained breath-
ing apparatus with air bottle), even when flames are small or not evident.
Use only suitable fire extinguishers (e.g. CO
2
extinguishers) for firefighting.
On the one hand, the need for the use of firefighting protective equipment results from the
fact that every fire produces extremely toxic and unnoticeable carbon monoxide. On the
other hand, the materials contained in the equipment and systems will produce toxic va-
pors, gases and dusts, such as sulfuric acid and hydrogen sulfide, hydrochloric acid, diox-
ins, hydrofluoric acid and beryllium oxide dust, when exposed to external flame and heat.
This relates to the following materials:
– Rubber used in cables, grommets, vibration dampers and equipment feet
– PVC in cables and interconnections
– PUR (foam) in isolators, molded parts, sealing mats and isolating strips
– Teflon in cables, interconnections, insulation and printed boards
– Beryllium oxide ceramics in power transistors
4.6 Hazards from Beryllium Oxide (BeO) Ceramics
Note Equipment and modules with parts containing BeO ceramics must be labeled accordingly.
The following explanations apply:
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