Planning information
16
Technical changes reserved
Additional information
Maximum short-circuit current
-
The prospective short-circuit current at the supply point of the switch system
must not exceed 10 kA (I
cp
≤ 10 kA).
-
The on-state current of the upstream protective device must not exceed
17 kA.
Circuit integrity maintenance
The tests were carried out with empty enclosures in accordance with the
standard specifications. This means that the installer is responsible for the
appropriate design of the electrical installations to ensure the required functional
duration in the event of a fire.
With a fire resistance time of at least 30/90 minutes, the fire safety housings have
been tested for exposure to fire from the outside in accordance with standard
DIN 1363-1:2012-10.
The duration of circuit integrity maintenance depends on various aspects; for
example, the shut-down behaviour of the installed electrical equipment or the
temperature behaviour in the event of a fire. Therefore, Hager cannot specify the
duration of circuit integrity maintenance.
Project-specific fire protection conditions and requirements must always
be borne in mind. In addition, the risk and spread of fire and any com-
pensation measures must be taken into account within the context of the
fire protection system.
Temperature behaviour
When installing electrical equipment, take the temperature behaviour of
each component into account.
Temperature-sensitive components such as thermomagnetic tripping
mechanisms should not be used. Hager cannot provide any guarantee for the
functionality of the fire protection enclosures in the event of fire as the system
installer is responsible for the design of the circuits. Functionality depends
primarily on the correct configuration. For example, screw-type fuses are
recommended instead of miniature circuit breakers (MCB).
Humidity
As a further guide, here are the average humidity values of the fire safety housing
when exposed to fire from the outside, based on existing test reports for empty
housings and type test reports:
-
The maximum humidity was approx. 80% when exposed to fire from the
outside for more than 30 minutes.
-
The maximum humidity was approx. 98% when exposed to fire from the
outside for more than 90 minutes.
Please note that these are the permitted values according to the standard
for fire protection distribution boxes.
Summary of Contents for FB LE Series
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