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What % of the time do you measure 230V vs 240V?
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<blockquote data-quote="UNG" data-source="post: 561632" data-attributes="member: 8931"><p>Back in the mid 90's when the 1st stage of the EU voltage harmonisation came in Manweb one of my local DNO's held a meeting for electrical contractors to explain what it meant for the existing supply network and future upgrades, the immediate outcome was that 240v was within the tolerances so there would be no rush to modify the network and the upgrade work to lower the voltage to the nominal 230v would take around 30 - 40 years based on the existing maintenance and replacement schedule</p><p></p><p>With regard to measured network voltages these days I quite often see anything from 242v to 252v and occassionally as high as 262v which seems to happen more when there is a lot of local PV installed</p><p>Back in 2011 I was working in a premises close to where a large building project was in progress and a new packaged sub station was installed to reinforce the local network to accomodate the increased load at peak times the voltage dipped to 209v - 211v depending which phase you tested that turned out to be some auto tapping issues with the local tranformer</p></blockquote><p></p>
[QUOTE="UNG, post: 561632, member: 8931"] Back in the mid 90's when the 1st stage of the EU voltage harmonisation came in Manweb one of my local DNO's held a meeting for electrical contractors to explain what it meant for the existing supply network and future upgrades, the immediate outcome was that 240v was within the tolerances so there would be no rush to modify the network and the upgrade work to lower the voltage to the nominal 230v would take around 30 - 40 years based on the existing maintenance and replacement schedule With regard to measured network voltages these days I quite often see anything from 242v to 252v and occassionally as high as 262v which seems to happen more when there is a lot of local PV installed Back in 2011 I was working in a premises close to where a large building project was in progress and a new packaged sub station was installed to reinforce the local network to accomodate the increased load at peak times the voltage dipped to 209v - 211v depending which phase you tested that turned out to be some auto tapping issues with the local tranformer [/QUOTE]
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What % of the time do you measure 230V vs 240V?
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