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medium voltage metering with the two wattmeter method...
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Dimitris Tzortzakakis
Aug 31, 2023, 10:13:12 AM8/31/23
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https://www.flickr.com/photos/167258532@N02/53155196983/in/dateposted-public/
from left to right: disconnect switch, on top of the pole, the big box
with two "antennae" potential transformer, below the big barrels current
transformer, next pole big barrel with two "antennae" isolation switch.
this supplies a "big box" shop that sells white goods (washing machines
and the like) I couldn't take a photo of the meter as there was a large
truck in the way. of course the current transformers need their
secondary short circuited. and of course this metering method works only
in three phase systems without a neutral.
from left to right: disconnect switch, on top of the pole, the big box
with two "antennae" potential transformer, below the big barrels current
transformer, next pole big barrel with two "antennae" isolation switch.
this supplies a "big box" shop that sells white goods (washing machines
and the like) I couldn't take a photo of the meter as there was a large
truck in the way. of course the current transformers need their
secondary short circuited. and of course this metering method works only
in three phase systems without a neutral.
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