Aaaah now, you NEED this video before any electricity meter accuracy tests can be performed. Let's do this!
So, this video covers all of the electrical equipment
which will be needed in order to pull-off an electricity
meter accuracy test.
Most of the accuracy tests will be in-basic 0.1 kWh
tests, just to keep the videos short and to-the-point.
Where a three-phase meter is to be tested, there
will be THREE tests carried out on that meter, due
to the fact that there will be three coil-sets in there,
and each coil-set will have its own adjusters and so
therefore, could provide different test results on
each coil set, and one of them could be over or
under the permitted tolerances.... So all are tested!
Years ao, when I performed an accuracy test, all I
needed, were some pieces of wire to join the testing
meter to the meter being subjected to the test, a plug,
socket and a 3kW water heater as a load.
Boy, times change! (and become more expensive!)
For future accuracy tests on this channel I'll be using:
Electricity Meter Accuracy Testing Board (Ev. 3),
Phantom Loading Unit, (Original Evolution)
Variable auto transformer, 10A rated (Variac)
110v centre-tapped site transformer* (Phantom Source )
3kW water heater* (Load Control for precise variac)
Bits to join that lot together:
Patch Cord: Site transformer to Phantom Loading Unit
Power Cord: Supplies power to the whole rig
Fun-Jiggery-Pokery Unit (See below for details)
*= The 3kW water heater and the site transformer are
connected IN SERIES via the Fun-Jiggery-Pokery Unit
(or the Mini Jiggy as an alternative) and this allows very
precise setting of the variac, as discussed in this video.
On the rear of the Meter Accuracy Testing Board is a
length of cable, and this would allow for In-Situ testing
of the meter to be tested, should that be needed, without
having to dis-mount the meter from its in-service position.
In future videos, the room in which this whole rig will be
used, there is a screw-hole on the wall, and a screw is
placed into that hole, upon which is attached the test
subject.
Having the axis of the loadwheel vertical is very important,
as-is having the loadwheel horizontal in both planes
(left-to-right and front-to-back) so that the test meter runs
correctly.
BEFORE WE GO INTO ANY ACCURACY TESTS, I DO
need to point out the following points of future videos:
At the beginning of each accuracy test video, all of the
equipment will be shown prior to the test-subject being
brought in front of the camera. This is so that, anyone
so-happening to land on any particular accuracy test vid
anywhere in the future, they will get to see the whole rig
which is used to pull-off that particular test. This will save
me from being repeatedly asked the same question over
and over in reference to the testing kit being used, and
my having to direct them to this video again and again.
Please try to understand this.
Soon, there will be accuracy tests appearing here on
Wayne's Electrical. THERE IS A PLAYLIST where all
of the accuracy tests will be placed so if you wish to
re-watch any accuracy test later on, that is where you
will find them: In the Accuracy Tests Playlist.
Accuracy tests coming soon. DO STAY TUNED!
Thanks for watching,
-Wayne's Electrical.
Video Number: VN-0097
____________________________________
Tags used in this video:
Test, Tests, Electricity Meter Accuracy Test,
Accuracy, Verification, Precision,
Testing Board, Meter Accuracy Testing Board,
Ev. Three,Evolution Three, Evolution 3,
On Phantom, Phantom Loading Unit,
Phantom Loading, Variable auto transformer,
10A, 10 Amp,Variac, Carroll & Meynell,
CMV 10E-1, CMV10E-1, Site transformer,
110v, 3-5 kVa, Building site transformer,
Fun-Jiggery-Pokery Unit, Fun Jiggery Pokery Unit,
Wayne's Electrical,
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For Admin only
Video breaks:
16.06 + end.
