EoW March 2009

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 : sales@sikora.net

Website : www.sikora.net

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EuroWire – March 2009