240V and 250V plug.

Discussion in 'General Technical Questions and Answers' started by K4LD, Jun 19, 2010.

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  1. VK6YSF

    VK6YSF Ham Member QRZ Page

    Voltage harmonization

    Have you heard of voltage harmonization in Australia, this a great federal govt. initiative to harmonize Australian supply voltage with European 230V standard. Many state power companies simply changed their tolerance from 240v +/-6% to 230 +10% / -6%. Straight up this policy simply allows the power companies to be sloppier with the voltage tolerance than they were.

    As I work in the power industry this issue is close to home and you may find this interesting, I find it incredible. Two power distribution transformers of the same capacity one from Western Australia and the other from Victoria.
    The Western Australian transformer name plate indicates the unloaded phase to phase voltage of 440v and the Victorian transformer with a unloaded phase to phase voltage of 433v, but this is good bit, both comply with Australian standard AS2374.

    For the consumer, higher voltages reduce the life of compact fluro lighting and many other appliances and excessively lower voltages reduces the life of electric motors.

    Answer to the original question; If the equipment is rated for 240v and you have a 250v supply, you are within tolerance.


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