Plena Voice Alarm System | en 111
Bosch Security Systems B.V. Installation and Operation manual 9922 141 1037x (V2.16) | V0.6 | 2011.09
If the building is not to be evacuated following
failure of the principal power supply, the
secondary power supply shall be capable of
operating the system for at least 24 h, or 6 h if an
emergency generator is available, and then
powering the system in emergency mode for a
minimum of 30 min. If a building remains
unoccupied for several days, provision should be
made to ensure that the voice alarm system is
capable of operation in emergency mode for 30
min. when the building is re-occupied.
See above. Responsibility of the
installer.
Non-emergency functions within the system, such
as background music, shall not operate from the
secondary power supply if this will reduce the
capacity for emergency operation.
Responsibility of the installer by
connecting the BGM source to the
primary power supply. From release 1.1
onwards the BGM will be deactivated.
If batteries are used as a secondary power supply
they shall be of the secondary type, complete with
automatic charging facilities. Where lead-acid
batteries are used they shall be of the valve-
regulated type unless otherwise specified, and the
charging system shall incorporate charging current
compensation for changes in the ambient
temperature, where this is necessary to achieve
the specified battery life.
Responsibility of the installer.
Batteries shall be used in accordance with the
manufacturer's recommendations in order to
achieve their specified life, which shall be not less
than four years. The end of life shall be taken as
the time when deterioration to less than 80% of
the rated ampere-hour capacity (at the one-hour
rate) has occurred.
Responsibility of the installer.
Automatic charging shall ensure that the batteries
are fully recharged to 80% of their maximum rated
capacity from the fully discharged state in a period
of not more than 24 h.
Responsibility of the installer.
Adequate ventilation and protection against
corrosion and dangers resulting from gases
emitted by the batteries shall be provided.
Responsibility of the installer.
5.7 Climate and environmental conditions
As all or part of the system may be installed inside
or outside buildings, under various climatic and
environmental conditions, and exposed to possible
mechanical damage, full information on the
conditions under which the system is required to
operate shall be included in the system
specification. For tests, refer to IEC60068-1
(environmental testing).
The Plena Voice Alarm System
specifications exceed the
environmental requirements given by
IEC60849.
When not otherwise specified, equipment shall
operate in accordance with the system
specification under the following conditions:
Clause / Requirement Compliance Signature
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