Technical Documentation: Fire Detectors used in hazardous areas
P-DET/EX/RCE/PM5/GKa/110995 16 Autronica Fire and Security AS
2 Analogue addressable system type BS-100
2.1 Zener barrier unit type BZ-32
Barrier unit BZ-32 is mainly intended to be used together with Autronica
addressable fire alarm systems. The main component is one ac-barrier (see page
12) for each branch for connection of detectors in hazardous area.
Each unit may contain from one to four ac-barriers, and may consequently be
loaded with the same numbers of branches as the unit contains ac-barriers.
Each branch may take up to ten addresses.
The type indication includes the number of acceptable branches, indicated by a
digit placed behind a diagonal at end of type indication.
E.g. BZ-32/3 means that the maximum number of branches which may be
connected to this unit is 3.
Do remember that the total numbers of addresses at one BS-loop must be
limited to 99.
Note!
Units listed below only, may be connected to the zener barrier unit type BZ-32/
n (n being any number from 1 to 4).
Smoke detector, optical type BH-31A/Ex and BH-31A/S/Ex
Smoke detector, ion-chamber type BJ-33/Ex (BJ-31/Ex)
Heat detector type BE-30/Ex
Heat detector type BE-34/Ex
Manual Call-point type BF-32M/Ex
Manual Call-point type BF-33/Ex
Manual Call-point type BF-34/Ex
Manual Call-point type BF-35/Ex
Interface unit type BN-35/Ex to which
heat detector type BD-26/Ex (BE-26/Ex) and
heat detector type BD-27/Ex (BE-27/Ex may be connected.
BD-26/Ex (BE-26/Ex) and BD-27/Ex (BE-27/Ex) are conventional heat
detectors.
In order to limit the current consumption, none of these units are equipped with
alarm indicator (LED).
The four first mentioned detectors may, as described above, be connected to
one branch in number of maximum 10 units.
1)
BN-35/Ex or BF-35/Ex must have the highest address numbers on the
branch.
1)
This is purely estimated from an electrotechnical point of view. Other criterias
to be estimated are gas group and total capacitance, C
eq
.
See page 15.
Analogue
addressable
system BS-100
Zener barrier
unit type BZ-32
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