A few years back, on some FB group I belonged to at the time, I
forget which, somebody posted a picture of a large industrial
transformer, I'll guess it was maybe 10' square and 8' tall, I
really don't remember, but YUGE compared to a residential pole
pig. It was old, and had definite discoloration of the paint in
some areas, not in others.
I didn't follow his point of posting, so I asked him why an old
xfmr would discolor in some areas, not in others, and many years
after installation. He said that, being in an industrial area,
there were lots of machines using solid-state switching at high
power levels, creating all sorts of transients and weird currents
that the design of the old xfrm never anticipated.
Obviously, some of that garbage would escape back out into the
neighborhood HV lines. And back into our homes. So, yeah, no. Not
gonna be easy to get the RMS value of garbage.
73
Randy
KZ4RV
On 6/13/2019 4:10 AM, 'Roger (K8RI)'
k8ri@... [ham_amplifiers] wrote:
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??
The garbage coming off the power line, as well as "in
house" appliance
generated trash doesn't give us much better.?? The old Amp
meters can
give us effective amps based on heat and those don't care
what the
waveform looks like.
73, Roger (K8RI)
