ID-E342-001GB
43
The battery cluster may be installed:
-
in a PAR-4800 box suspended under the control panel in which 2 x 38 Ah or 2 x 44 Ah batteries
may be located (30 hours of power supply for the control panel in the above-mentioned
conditions);
-
in an external box (e.g. PAR-2000) of capacity max. 180 Ah (maximum recharger capability).
Note:
1.
As far as an optical fibre network is concerned, the current drawn by the optical fibre
transducer must be taken into account – max. 150 mA.
2.
The battery box must be located max. 1 m away from the control panel.
3.
The cross section of the cabling used to connect the batteries should be at least 2.5 mm
2
.
4.
Installation, operation and disposal of waste batteries should be carried out in accordance
with the battery manufacturer guidelines. Used batteries should be handed over for
recycling in accordance with the regulations in force.
6 ADDRESSABLE DETECTION LINES
6.1 DETECTION LINE TYPES
The POLON 4500 control panel type A addressable detection lines of are resistant to line wires faults
(short circuit or break). This resistance is ensured by: the loop-shaped line operation system and built-in
short circuit isolators in the system addressable elements. Moreover, it is possible to connect a type B
(radial) open line, however, according to the applicable standards, more than 32 warning devices must
not be installed in this configuration.
In the loop-shaped system, one line break does not eliminate any line element from operation. Having
detected a fault, the control panel informs about its occurrence and ensures the addressable detection
line is reviewed from both sides. After the break is removed, the signal informing about this fault is
automatically cleared.
A detection system operating without the loop is not resistant to line breaks. A break results in
disconnecting line elements from the fault location to the last element in the line.
As far as radial detection lines are concerned, in case a short circuit is detected, the isolator closest to
the short circuit is actuated and the line section behind this isolator is disconnected.
In the loop-shaped system, if a line cabling short circuit is detected, two isolators in line elements
installed closest to the fault location are actuated, which triggers the disconnection only of the
detection line section located between these elements. It is not recommended to design detection lines
with branches as a break or short circuit in a side line results in disconnection of the elements from the
fault location to the end of a given branch, regardless of whether or not the line operates in a loop
system. If creating a branch is necessary, it is recommended that only a few line elements are installed
in the branch (i.e. fewer than a dozen or so).
The detection lines in the POLON 4000 system should be routed in the following manner:
-
radial lines without branches;
-
loop-shaped lines may have single branches but two neighbouring branches should be separate
with at least one addressable element.
This method of line routing makes enables to carry out automatically the addressable elements
configuration.
While designing addressable detection lines, the following program and electric requirements must be
taken into account:
-
the number of addressable elements in a detection line must not exceed 127;
-
the maximum current consumption of all elements in a quiescent mode:
for the detection line cabling resistance at 2 x 100 Ω: . . . . . . . . . . . . . . . . . . . . . 20 mA
Summary of Contents for 4000
Page 25: ...ID E342 001GB 25 Fig 5 3 MSL 1M line module overview ...
Page 96: ...96 ID E316 001GB Fig 9 16 Non potential output exemplary connection ...
Page 101: ...ID E342 001GB 101 Fig 10 2 MSI 48 and MSI 48 Ed 3 network modules ...
Page 103: ...ID E342 001GB 103 Fig 10 3 Four control panels network connection with two pairs of cables ...