Technical article
March 2014
193
On the other hand, it was verified that any
bleed had not been found in this newly
developed product.
4.5 General Characteristics Compatible
with TÜV and JCS Standards
Table 4
shows the results of evaluating
a part of any other general, physical
properties of this cable, which conform
to the TÜV and JCS standards. There are
concerns about the cold resistance and
acid resistance of a flame-retardant cable
for which polyolefin is used.
However, cracks did not occur even when
a test was performed at a temperature of
−40ºC.
Developed wire
Sample A
Fitel Photonics Laboratory
Furukawa Electric Co Ltd
6 Yawatakaigan-dori Ichihara
Chiba
Japan
Tel
: +81 436 42 1717
Email
:
Website
:
An acid resistant test revealed excellent
results. In addition, other tests revealed
satisfactory results.
This halogen-free cable for photo-
voltaic power generation is excellent in
conforming to the TÜV and JCS standards.
5 Conclusions
At this time, Furukawa has succeeded in
developing a cable which has excellent
high-temperature
heat
resistance,
heat
deterioration
properties
and
incombustibility, and which conforms to
the TÜV standards and the JCS standards,
without using an electron-beam bridging
machine.
In the future, this product will be
introduced to each manufacturer through
PR activities, deploying this technology
and
promoting
non-electron
beam
irradiation in the field of electron-beam
irradiation.
n
The paper is courtesy of the 61
st
IWCS
International
Cable
and
Connectivity
Symposium, Providence, Rhode Island, USA,
November 2012.
6 References
[1]
TÜV 2Pfg1169/2007 Standard
[2]
JCS4517
[3]
UL4703 standards
Test
Required
Developed wire
INSULATION
Mechanical properties
Before aging
Tensile strength (MPa)
Elongation (%)
After aging (aged at 150º for 240 hours)
Tensile strength
(per cent of unaged values)
Elongation
(per cent of unaged values)
6.5<
125<
70<
70<
20.4
357
104
92
JACKET
Mechanical properties
Before aging
Tensile strength (MPa)
Elongation (%)
After aging (aged at 150º for 240 hours)
Tensile strength
(per cent of unaged values)
Elongation
(per cent of unaged values)
8.0<
125<
70<
70<
14.8
22.4
114
86
Resistance against acid solution
Tensile strength
(per cent of unaged values)
Elongation
Resistance against alkaline solution
Tensile strength
(per cent of unaged values)
70~130
100<
70~130
>100
114
217
115
217
CABLE
Bending test at -40ºC
No cracks
No cracks
Impact test at -40ºC
No cracks
No cracks
These results represent the observations
of the surface of an electric wire that was
observed a half-year after a cable was
manufactured.
Since this cable requires a very high level
of heat deterioration properties, the
addition of very many antioxidants is
needed, and there are concerns about the
occurrence of bleed. When a bleed occurs,
there are concerns about the transition of
the bleed to the connections.
It was verified that as for Sample A
(conventional polyolefin materials), anti-
oxidants were bleeding at an ordinary
temperature.
▲
▲
Table 4
:
Primary properties of developed cable
▲
▲
Figure 2
:
Bleed characteristics
