EoW September 2008

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EuroWire – September 2008 38
english technology news
With its X-RAY 8000 NXT
measuring system Sikora
provides a tool for quality
control, production
optimisation and reduced
material consumption in
power cable production.
X-RAY 8000 NXT is the
evolutionary successor
of the X-RAY 8000 for
measurement at CV-lines.
X-RAY 8000 NXT is
suitable for permanent
quality control at the
production of MV-, HV-
and EHV-cables in CCV-,
VCV- and MDCV-lines.
Sikora is well known in
the field of EHV-cable
production. Specifically
developed for this
application area Sikora
offers the X-RAY 8000 NXT for the
largest cable diameters from 180mm for
CCV-lines and 220mm for VCV-lines.
The X-RAY 8000 NXT measures the wall
thickness, eccentricity, diameter and
ovality with high measuring accuracy
and repeatability.
Only one scan is necessary to calculate
all measuring values. X-RAY 8000 NXT
allows the operator a fast centring of
the extrusion tools, as well as optimum
control of the production line in
automatic mode.
Multi-sensor semiconductor detectors are
incorporated into the high-end variant of
the X-RAY 8000 NXT. This multi-sensor
technology provides reliable readings,
even where the cable may vibrate,
and provides four measuring values
at each scanning process for precise
measurement.
Ceramic windows (patent pending)
separate the scanners from the pressure
of the CV-line. The surface of the ceramic
windows does not react with any
by-products resulting from the cross
linking process and always remain clean.
Together with reliable measuring
systems, the cleanliness of the insulating
material is an important requirement
for compliance with quality criteria in
the production of high voltage cables.
Sikora offers an intelligent solution
to recognise contamination in the
PE-insulation before the cable is
produced.
Using the CSS 2 camera system from
Sikora the total XLPE-material is
examined for purity in the flow channel
directly before the crosshead.
The CSS 2 indicates when production
can start; it reports contamination and
detects combustion particles, including
amber and scorches in the material, using
a quantitative and graphical display.
Sikora AG – Germany
Fax: +49 421 48900 90
Email:
Website:
Quality control in high voltage cable production
X-RAY 8000 NXT Scanner Box ▲ ▲
CSS 2 detects contamination in the PE-insulation ▲ ▲