WCA July 2008

and

(of wires & cables)

Flaw detection of wire and cable Manufacturer Contrôlé Mesure Systémes (CMS) supplies a full range of eddy current inspection systems for the wire and cable sector. The CMS range of Zet@Master, Zet@premium and the Zet@Micro meets quality standards including API, ASTM, DIN and can be used on-line and off-line for all test tasks from the simplest to the most complicated applications.

Test and inspection equipment

Established for over ten years, YueHua Electric Industrial is a professional manufacturer of all kinds of testing equipment and inspecting apparatus for wires and cables, plugs, sockets and switches, and for mechanical, electric, environ- ment, burning and force testing and measurement of materials including rubbers and plastics. All equipment complies with IEC, UL, VDE, BSI, JIS and CCC standards, as required. Non-standard products can be supplied as per customer requirements. YueHua’s main product ranges are: Mechanical Properties • series: bending, abrasion and twist Electric Properties series: • conductor resistance insu- lation resistance, ground bond resistance, polarity Environment series: age- •

The Zet@premium from CMS ❍ ❍

One of the smallest instruments on the market, Zet@Master allows control of all peripheral devices, sorting management and reporting. Reports include defect location, type, and number of good and bad parts. Contrôlé Mesure Systémes – France Fax : +33 385 941 415 Email : contactcms@cmseddyscan.com Website : www.cmseddyscan.com

ing in an air oven, ageing in an air bomb or oxygen bomb, resistance to ozone, salt spray, ultra- violet, xenon-lamp, constant temperature Burning series: single-wire combustion, bunching combustion, resistance to • fire, arc ignition, glow wire, tracking Force series: density, pull-testing and sclerometer • Measurement series: projector, magnifier, caliper, micrometer and gauge • The YH-8812WEI Universal Tensile Tester ❍ ❍

YueHua Electric Industrial Co – China Fax : +86 769 83 55 30 55 Email : info@yhtec.com.cn Website : www.yhtec.com.cn

Saving copper in power cable production

result in order to optimise the cable diameter. To take a measurement, the twisting machine stops and the lifting platform carrying the measurement basin rises to make contact with the sample. During the measurement the cable is inside a water bath at a set temperature as close as possible to that of the test object. Burster’s series 1240 calibration resistors are designed for calibrating and testing the resistance meter. Every resistor is delivered with a Manufacturer Test Certificate. On request, resistors can be delivered with a DKD Calibration Certificate. This certificate documents compliance. As the temperature of the conducting cable directly influences the measurement result, the temperature of the water bath measured and displayed by the Resistomat ® 2304 must also be checked. A calibrated thermometer with DKD Certificate can be used for this purpose. Burster GmbH – Germany Fax : +49 72 24 645 88 Email : info@burster.com Website : www.burster.de 


Using conventional measuring instruments to monitor cable cross-sections during production it is difficult to precisely maintain tolerance limits. A safety allowance of up to 5% must be made to prevent any drops below the specified limit, which would cause the product to be rejected. With a safety allowance of 5%, roughly $400 is wasted per ton of processed copper. Considering the large quantities of copper processed in a cable factory, this loss easily accumulates to $10,000 per month. Burster systems allow line resistances to be measured to an accuracy of 0.1% inside the production of a cable length. The machine operator is able to adjust the compacting head in accordance with the measurement results, thus optimising the cable’s cross-section. Burster’s Resistomat ® 2304, clamping device 2382A and a lifting table make it possible to take a measurement of a sample length during production, with only a temporary stop of the stranding machine. The machine guide has the option to adjust the compressor according to the measurement

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Wire & Cable ASIA – July/August 2008