TEST & MEASUREMENT PRODUCTS Raising the bar for cable fault finding
Megger’s new digiPHONE+ cable fault pinpointer, featuring the company’s Background Noise Reduction (BNR) technology, enables the rapid discovery of precise locations of faults on buried power cables. The digiPHONE+ is based on the
technique of comparing acoustic and electromagnetic signals that are produced by flashovers at the fault when a surge voltage is applied to the cable. In the past, pinpointers have been limited by the difficulty of distinguishing between the acoustic signal produced by the fault and background noise produced by, for example, passing road traffic and nearby pedestrians. In the digiPHONE+, Megger’s BNR technology solves this
problem by comparing the acoustic signals produced by two successive flashovers, and eliminating all types of noise that are not present in both signals. The result is a clean acoustic signal that relates only to the fault and, therefore, allows its location to be accurately determined. The new instrument also
features a simplified display that continuously shows the user their distance from the fault and the direction to it. The display positively shows when the fault location is reached and, at this point, it indicates the approximate depth of the fault below ground. Other benefits of the
digiPHONE+ include a volume limiter and an Automatic
CONVENIENT TESTING
Proximity Mute (APM) system, which mutes the headphones when the operator’s hand approaches the instrument.
Megger
www.megger.com/uk T: 01304 502 101
Enter 209 WHERE POWER MEETS PRECISION
Yokogawa has combined its experience in power measurement and oscilloscope design to create the PX8000, which brings oscilloscope style time-based measurement to the world of power measurement. It can capture voltage and current waveforms precisely, opening up applications and solutions for a huge variety of emerging power measurement problems. Commenting on the launch of the PX8000, Terry
Marrinan, Yokogawa’s vice president, test and measurement, for Europe & Africa, said, “With the launch of the PX8000, R&D professionals need no longer compromise on their need for high accuracy time-based power measurement - a need that conventional power analysers
and oscilloscopes were never designed to meet.” Typical application sectors for the PX8000 include inverter and motor testing, reactor loss measurement
of inverter boost circuits, transient responses of industrial robots, wireless charger efficiency measurement, and voltage and power measurements in electricity distribution systems. A full product review as well as a demonstration video can be viewed at
www.connectingindustry.com/px8000. Yokogawa Europe
www.tmi.yokogawa.com T: +31 (0) 88 464 1811
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To provide accurate AC and DC current, voltage and electrical continuity testing, Martindale Electric has introduced the new ET5 and ET4 electric testers. The new testers come with a range
of new features that make testing more convenient for all electrical professionals. With the ET5 and ET4 there is no need to open the tester’s jaws - just push the wire down the fork and the tool does the rest for you, for maximum convenience and ease of use. The ET5 can also take k-type thermometer probes, making it an all in one tool for most applications. Differentiating from other products
in the market, both the ET5 and ET4 have dual displays and can indicate volts and amps simultaneously, as opposed to many traditional units where you can only display one or the other. The new testers also come with a bright backlight making the screen easier to read, especially in poorly lit areas, and the LED light at the top illuminates the work area. Both tools come with an auto-off function which disables them after 30 minutes of inactivity, and auto-off function for the screen backlight after approximately one minute to prolong battery life.
Martindale Electric
www.martindale-electric.co.uk T: 01923 441 717
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IMPROVING MANUFACTURING STANDARDS
Clare’s HAL LED offers LED manufacturers better resolution at low power to offer greater control of the output of products under test, ensuring improved accuracy and quality control. The availability of the HAL LED comes at a
time of emphasis on climate change, with companies focused on sourcing ‘greener' alternatives. For manufacturers the challenge is to ensure that they are producing product that performs as efficiently as possible. Using the HAL LED, manufacturers can
complete end of line tests with the additional benefit of full functionality testing of the operation of the equipment. It also enables users to meet the safety compliance requirements for
BS EN 60598 which covers the safety of lighting equipment such as lamp holders, lights and fluorescent lights. The HAL meets the requirements of national
and international safety legislation, including the Low Voltage Directive (LVD), and provides power/leakage, AC/DC Hipot (FLASH/Dielectric Strength), insulation and ground/earth bond test capability to ensure products are safety tested during design and manufacture. This ensures consistent quality control
throughout the production process and that products are safe to use once they leave the factory gates. The HAL LED meets all of the requirements of the various British and European
/ ELECTRICALENGINEERING
standards in relation to high voltage testing and incorporates fully isolated high voltage outputs to ensure the highest levels of operator safety.
Clare
www.clare.co.uk/HALLED T: 0191 586 3511
Enter 212 ELECTRICAL ENGINEERING | MARCH 2014 21
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