EEVblog 1446 – Analog Watt Hour Meters are AMAZING!

Analog Watt Hour energy meters are fascinating! How they work, teardown, and experiments. Thanks to Max Button for sending this in to the mailbag.

00:00 – Watt Hour Energy Meters
02:11 – Teardown
05:13 – What’s to stop it taking off?
06:40 – Does it work? Testing with a load.
07:24 – Can you get free electicity with a neodymium magnet?
08:14 – Timelapse of no load creepage
08:49 – Anti creep holes
10:45 – When this baby hits 88 MPH you’re gonna see some serious spin!
19:06 – Theory of Operation
24:00 – Interesting Design – Jewel bearings
25:07 – Interesting Design – Magnetic temperature compensation
26:58 – Interesting Design – Full load compensation
27:40 – Interesting Design – Dimples

This is how serious they take their metering: https://www.ausgrid.com.au/-/media/Documents/Technical-Documentation/ES/ES12-Metering-Contestability.pdf

This model meter was cancelled from use in 2012: https://www.industry.gov.au/sites/default/files/nmi/certificates-approval/14-2-4.pdf

Forum: https://www.eevblog.com/forum/blog/eevblog-1446-analog-watt-hour-meters-are-amazing!/

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