PROEL BULK CABLE

BULK CABLE
MAIN CABLE REGULATIONS
A) COPPER SPIRAL 90%
B) COPPER BRAID 75%
C) COPPER BRAID 90%
D) ALUMINIUM/POLYESTER
E) ALUMINIUM/POLYESTER + COPPER BRAID 95%
F) DOUBLE COPPER BRAID 95% WITHOUT SEPARATION
G) COPPER BRAID 95% + SEPARATING TAPE + COPPER BRAID 95%
H) COPPER BRAID 95% + ALUMINIUM/POLYESTER + COPPER BRAID 95%
I) COPPER BRAID 95% + MOMETAL + COPPER BRAID 95%
LOW FUMES RELEASE
Italian regulations:
CEI 20-37/III
International regulations: VDE 0472 teil 816
LOW GAS TOXICITY RATE
Italian regulations:
IEC/TC20/WG12
UTE .C .20-902 • HD 606.2 S1
CEI 20-37/II
International regulations: NF. C 20-454
LOW CORROSIVE GAS
RELEASE
AFNOR X 70/100
Italian regulations: CEI 20-37/I • CEI 20-37/2
International regulations: VDE 0472 teil 813/815
FLAME RESISTANCE
IEC 754-1,754-2
Italian regulations: CEI 20-35
International regulations: MIL-C 17
NF. C 20-453 • HD 602 S1
VDE 0472 teil 804
IEC 332.1 • UL 758
NF. C 32-070 C2 • HD 405.1
MAIN CABLE ELECTRICAL PARAMETERS
RESISTANCE
• (Measured in Ohm/length unit @ 20°C)
The conductor resistance is of utmost
importance for the determination of the
signal’s capacity of transfer on the line of
transmission. The higher is the resistance
the more the transmitted signal will lose ts
strength and as a consequence the ability to
arrive at destination. Its value is given by the
conductor’s material resistivity vs. its section.
CAPACITANCE
• (Measured in Farad/length unit) The
capacity expresses the tendency of a
dielectric material between conductors to
store dielectric energy when a difference of
potential exists between the conductors. It is
always better to use low capacitance cables
in order to allow transmissions over longer
distances.
NOMINAL IMPEDANCE
• (Measured in Ohm) The impedance
value indicates the total opposition that a
transmission line offers to the flow of any
varying current. In a long distance or high
frequency transmission system, the most
important components for impedance
are: (a) correspondence between cable
impedance and receiving system impedance
(to avoid the signal’s reflection and
distortion); (b) impedance uniformity (linked
to conductor quality, cable geometry and
dielectric uniformity).
ATTENUATION
• (Measured in Decibels/length unit) The
attenuation determines the transmission
level of a line (usually input voltage vs.
output voltage). The signal’s attenuation
turns into a decrease and a distortion of the
signal with a loss in the voltage peak and an
impulse slowing.
VELOCITY OF PROPAGATION
• (Measured in percentage) The velocity of
propagation is the time required by a signal
to travel through a transmission line. “Vp”
indicates the transmission speed of electrical
energy in a length of cable compared to
speed of light in free space and it is expressed
as a percentage (insulation material
dielectric constant dependant value).
WORKING TENSION
• (Measured in Volts) The working tension
of a cable is limited by its heating and by
the dielectric softening temperature. The
transferable power depends on materials
and on cable dimensions as well as, of
course, room temperature.
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