EDITOR’S CHOICE


to provide a live source wherever you are working - with no need to leave the working area – and is considerably safer. Proving units are very quick and easy to use. In the case of the


Martindale PD440-S 440V AC proving device, for example, you simply place one probe of the voltage indicator under test into the left hand socket of the proving unit until it makes contact with the terminal. Then place the other probe into the right hand terminal of the proving unit and gently press down. This will result in the high voltage indicator illuminating to show the unit under test is functioning correctly. As an added tip, during testing of your voltage indicator, it is


recommended to flex the voltage indicator cable along its length - particularly at the entry points to the handheld elements - to confirm that the cable has not fractured. It is advisable to use a dedicated proving unit matched to the


voltage indicator in order to fully test that all LEDs on all ranges of the voltage indicator are working - safeguarding against incorrect readings due to a faulty LED, for example. Furthermore, it is important not to over-prove: a three-phase voltage indicator should be proved at 440V whereas a common two pole indicator with a 690V range should be proved at 690V. By incorporating a proving device into an electrical safety process,


that process becomes inherently more robust and reliable. Although a relatively simple addition to the process, when working with or near electrical systems and equipment, a proving device can significantly reduce the risk of electrical injury to you and others around you.


Campaign


All Martindale electrical testing products will now be sold with a hard copy of the memorable “ALIVE” message to ensure that it is shared as widely as possible and that the handy card remains accessible at all times to anyone working on or near electricity. By making this process as straightforward as possible, the company’s


hope is that more maintenance engineers, more technicians, more operatives, more hard-working people will go home safely to their families at the end of their working day. It really is as simple as that. Every life lost to such incidents is absolutely tragic. It is all of our responsibilities to prevent this from happening and Martindale will not stop sharing this message until such fatalities are a thing of the past. Downloadable ALIVE resources for those responsible


for industrial compliance managers are available on the campaign page at the company’s website: https://martindale-electric.co.uk/5- steps-safe-isolation/


Martindale Electric martindale-electric.co.uk


SafEguarding thoSE working around ElEctricity


induStrial coMpliancE | wintEr 2021 11


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