Most motor/transformer/power line failures give some warning of the fact they are about to occur. This warning is called potential failure. Techniques to detect potential failures are known as on line electrical condition monitoring.
The Non Contact Magnetic Field Meter Model Z2000 measures the magnetic flux density. This is done at a fixed distance from the electrical equipment at regular time intervals. Increases in the measured value, indicates a potential fault condition e.g. line to earth fault, because the size of the field is proportional to current. Model Z2000 can be used to detect faulty insulators on transmission lines and to identify dead cables from working cables when they are close to each other.
The other application of Model Z 2000 is to help utility engineers working in substations etc. to avoid harmful exposure to magnetic fields. Research has indicated there may be a 'possible' link between magnetic fields and the 'likelihood' of people becoming ill with certain types of cancer (leukemia) and diseases of the nervous system such as multiple sclerosis. Legislation in some countries makes it mandatory to avoid exposure for any length of time to magnetic field strengths greater than 200-300nT.
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