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Routing of cables
Note
: Only pressurized gas generators with a guaranteed internal resistance of 1.0 to 1.6 ohms per pressurized
gas generator may be used.
Note
: The terminals in the control panel are designed for maximum wiring cross-sections of 2.5 mm
2
.
If larger cross-sections are used then the cross-section must be reduced in size immediately ahead of the control panel.
In all circumstances the types of wiring are to be agreed with the site management, with the local authorisation
authorities, energy supply companies,
fi
re protection department or health and safety organisation. In cases where the
wiring is embedded in the wall it may be necessary to use types J-Y(ST)Y and for the pressurized gas generators NYM-I.
In cases where the wiring is surface mounted it may be necessary to use
fi
re protection wiring with function retention
E90 (E30) in accordance with DIN 4102. The wiring cross-sections speci
fi
ed may not be reduced. They are speci
fi
ed for
an ambient temperature of 20° C. For higher temperatures increase the cross-sections.
For E90 (E30) the wiring cross-sections must be aligned in accordance with the manufacturer’s speci
fi
cations. All lines to
the central control unit (with the exception of the mains input line) carry 24 V DC and must be laid at a separation
distance from the mains input line. For the wiring layouts the appropriate VDE regulations are to be observed.
Cable length scheme
Installation cable
NYM-I with green/yellow
Quantity of pressurized gas generators
1
2
3
4
5
6
7
8
3 x 1.5 mm²
max. 950 m
max. 900 m
max. 850 m
max. 800 m
max. 750 m
max. 700 m
max. 650 m
max. 600 m
3 x 2.5 mm²
max. 1600 m max. 1520 m max. 1140 m max. 1360 m max. 1280 m
max. 1200 m max. 1120 m max. 1040 m
Examples of cable types and
fi
ttings that can be used
Cable system, consisting of load support system and cables with appropriate
fi
re protection tested wall plugs and screws.
Cable system in accordance with DIN 4102-12. Safety cable + layout system.
max. 8 pieces
Pressurized gas generator 24 V DC
Cable type see table
Observe VDE regulations!
automatic alarm unit
(last alarm unit with monitoring resistor)
Siren 24 V AC / DC 100 mA
IY (ST) Y 2 x 2 x 0.8 mm, max. 100 m (see note below)
IY (ST) Y 4 x 2 x 0.8 mm, max. 100 m (see note below)
IY (ST) Y 2 x 2 x 0.8 mm, max. 100 m (see note below)
Mains 230 V/50 Hz
NYM-I 3 x 1.5 mm
2
provide a separately disengageable circuit.
Secure against unintentional switching-off.
Transmission
IY (ST) Y 4 x 2 x 0.8 mm
or
SHE call point
(last SHE manual call point with monitoring resistor)
E30 / E90 cable
black
blue
green-yellow
black
blue
green-yellow
grey
black
brown
SHE control panel TRZ Plus DG
!
3 x ... mm²
X
