Telecommunication Copper Cables - PENGG KABEL GmbH

Behaviour in Case of Fire, Fire Away Line, Fire Load
In the European standards EN 50167, EN 50168 and EN 50169 data
cables with halogen-free outer sheath are required. The consideration
and adherence to these standards are recommended particularly with
public setting e.g. hospitals, schools and airports. In addition with
other buildings with high person or real value concentration a use of
halogen-free cables is practical.
Cable with PVC-sheath
In the case of fire standard PVC materials can transmit fires and form
hydrochloric acid (HCI) by splitting off hydrogen chloride gas in
connection with moisture (e.g. fire fighting water). It continues to co me
to a strong smoke development with burning PVC (polyvinyl chloride)
and the corrosive damage at buildings and equipment can often devastating
extents assume, which exceed far the actual fire damage.
Cables with halogenfree sheath
Hereby materials are used, which do not contain halogens (e.g. chlorine)
and which do not set free corrosive gases in the case of fire. Also the
proportion of toxic gases is reduced to a minimum, and smoke development
and fire away line are hardly still available or possible. Designation
notes at the cable are e.g. the abbreviations FRNC or LSOH.
In detail these designations are meaning:
FR – flame retardant
(fire-away-line-restraining)
NC – non corrosiv
(no corrosive constituents)
LS – low smoke
(low smoke development)
0H – zero halogen (halogen-free)
Another big advantage by using such materials is, that the free view
on gears and escape routes is kept. Please note that you have to take
care that such kinds of materials are also used by other products ,
e.g. power cables or cable run channels.
Fire load [kWh/m], [MJ/m]
In each building there are many different inflammable installations or
products. Also cable and cores (although hidden in intermediate ceilings
or channels), which can in particular represent a substantial
component in administration buildings belong to them. These cables
have most divergent powers (heat values) and the total fire load of a
building could clearly increase. Therefore you should be pay attention
to the fact, when planning that the fire load quantities are kept as
small as possible.
Testing method according to IEC 60332-1
Samples
From the end of the tested cable a sample piece of 600±25 mm is taken.
Preparation (fig.1)
Propane from cylinder with burner, flame height 175 mm.
Sample is hung up vertically into the center of a metal box, (metal
box: h=1200±25 mm, b=300±25 mm, t=450±25 mm, front open).
Flame cone of the gas burner has to be fixed in an angle of 45° approx.
100 mm above the lower sample.
With cable diameter up to 50 mm one burner is used, with cable diameter
over 50 mm two burners are used.
Execution
t = duration of the flaming action in s
m = weight of the sample in g
Analysis
The test is considered as positively passed if the sample did not burn
or the flames automatically go out and the fire damage does not
reach the upper end of the sample.
Fire-pure e.g. soot lining and colour modification are not does claimed.
Samples
From the end of the tested cable a sample piece of 600±25 mm is taken.
Preparation
Propane from cylinder with burner, flame height 125 mm.
Sample is hung up vertically into the center of a metal box, (metal
box: h=1200±25 mm, b=300±25 mm, t=450±25 mm, front open).
Flame cone of the gas burner has to be fixed in an angle of 45° approx.
100 mm above the lower sample.
Execution
max. 20s
t = 60 + —— m
25
Testing method according to IEC 60332-2
Analysis
The test is considered as positively passed if the sample did not burn
or the flames automatically go out and the fire damage does not
reach the upper end of the sample.
Fire-pure e.g. soot lining and colour modification are not does claimed.
Telecommunication Copper Cables • 09/2012 • © by PENGG KABEL GmbH • Subject to technical alterations 57