EoW March 2009

89 / 160

EuroWire – March 2009 87
Power cable manufacturing,
materials & machinery
X-RAY 8000 NXT for XL-diameter
Sikora’s X-RAY 8000 for the measurement of wall thickness, eccentricity, and the diameter and ovality of high-voltage
cables, has been improved regarding design and technology. The focus of the development was on profitability and
technological progress. The optimised technology was summarised under the name X-RAY 8000 NXT (NeXT Generation)
for an optimum quality control at the production of MV-, HV- and EHV-cables in CCV-, VCV- and MDCV-lines.
With the X-RAY 8000 NXT for XL diameters, Sikora is presenting a sophisticated model combining the technological
advantages of the X-RAY 8000 NXT with regard to the practical application in the field of EHV-cable (Extra High Voltage cable)
production.
This model is suitable for extremely big cable diameters of up to 7.09" (180mm) for CCV-lines and 8.66" (220mm) for VCV-lines.
It provides highest measuring accuracy and repeatability while demonstrating the flexibility and safety of an X-RAY 8000 NXT.
Same as the X-RAY 8000 NXT, the XL-system requires only one scan to calculate all measuring values. Multi-sensor
semi-conductor detectors are incorporated into the high-end variant of the X-RAY 8000 NXT. The multi-sensor technology
assures reliable readings and ensures reliable measuring values – even when the cable is vibrating.
At each scanning process four measuring values are provided – for a remarkably precise measurement. X-RAY 8000 NXT has
integrated ceramic windows (patent pending), which separate the scanners from the pressure of the CV-line. This innovation
replaces the previously used beryllium windows and prevents contamination in the measuring plane. The surface of the
ceramic windows does not react with any by-products and always remains clean without rinsing and mechanical protections.
The product planning of the X-RAY 8000 NXT was specifically adapted to the demands of the modern high-voltage cable
production. Today, 500 kV-cables and higher are produced, with bigger wall thicknesses and a specific measuring plane.
Additionally, the expansion of the hot material results in a bigger hot diameter. For the measurement of EPR-cables with
extremely big diameters Sikora offers an innovative 70kV scanner model for highest quality at production.
Sikora AG – Germany
Fax: +49 421 489 0090 Email: Website: