so our Metrel 3155 multi-function test route what we have
to do today Gordon we're going to check the RCD
function that's in this Easee EV charger this is a three-phase charging unit and
we're going to test the rcd only during this test we've done other
videos haven't we in the channel we have and if you if you're
interested in the full gamut of tests on ev charges check out that video it's in
the eye above my head or in the screen at the end of the video
we're going to do a single test and we're going to test the
rcd okay i'm going to do an auto test oh just that i mean it's easier for you
gary hopefully it's easier for me because i've got a funny feeling might
be a little bit more difficult for you because i've had an inspection of this
Easee EV charging point I can't find a reset button anywhere on it
so there's our main screen it's already been populated with all the details that
we need however if we press this button here we
can go in and change say the earthing arrangement or the line to
protective earth that we're testing between what we test in between okay
so in this test we're going to pick the l3 conductor okay
obviously we could select any of the others we're not using the
the plug-in the plug top to hook up to the tester here
because that doesn't allow us to select the different phase configuration
however in our previous video we did use this didn't we because it was
a single phase unit that we were testing so we're using the banana plugs on this
one okay again we could have changed that by
clicking on there we could have chosen one of the other
line conductors to test between but we didn't okay so i'm going to plug in the
a1532 which is this adapter for specifically for ev chargers okay
plug in there and i'm going to set it up as if the car is charging so i'll change
that to state c okay we should have some lights appear
on there indicating that all phases are present
and the charges indicating that if there was a car
plugged in this would now be charging okay you've also set it to 32 amps
what's the 32 amps 32 amp is the maximum this charger can
be set to for the circuit configuration we have so the brake is rated at 32 amps
yeah but check that other video out if you
want to see how cleverly these chargers share
the chat the current between different charge points so all i've got to do now
is hit my run button and i'm going to run through the
sequence to test this but obviously when it trips the rcd
gordon's going to have to reset it so let's have a little play here
so we say yes to that box okay so we should be off and running so what's that
first test gary we are now testing the one times the
rated value of the rcd the nominal rating of the rcd
and it's tripped we'll see then we've got a red light server to indicate that
you ready for that reset it then i'll do the reset gary are you ready for this
i'm ready really complicated there you go and we're back in ready for
your next test right
second one's gone so again we've done it in both sides of the cycle the positive
negative halves of the ac waveform and we can reset it again so by pulling
it out it looks really difficult you've got the hard end there i see
and we go back in and now we're doing it at five times its value okay
so this should be a quick quick time less than 40 milliseconds
so as we go here in the first half of the song 17.5 you need to reset it
again and we're now in the negative half of the cycle
we go again so this test is limited by how fast the tester work and how quickly
i can plug that lead in and out we know which one's slower
okay so we've got those two readings we're now going to be doing it half
times you'll probably get a little break now so if you reset this one
so half its nominal value of current so here we go
so it shouldn't do anything in these two tests
so as we go through the first one in the positive half of the cycle
we expect nothing to happen nothing's happened it's now gone over you haven't
had to do anything over to the negative half of the cycle
nothing's happened now we're now going to do uh a ramp test to
see how many of those milliamps it needs to drop the rcd out and that's about
25 and a half you need to reset it that was in the positive half of the cycle
red lightsaber again that's a quick reset anna so now we've
gone to the negative half of the cycle doing a ramp test
here we go so what reading do we get now okay
so it's going to go all the way up to 25.5 okay reset it
the next test is going to put some dc into the circuit
okay so this is the unique thing about our cds that are built into eb
charts this dc function yeah i got a beat and that's the expensive bit if
you're going to buy one to put in the distribution board it is
so here we go so now we're going to see how much of this dc current
we're going to need so it's going to climb up similar to ramp test
and at 5.4 milliamps of dc current it activated which is good it's
under the six so we draw it again and we'll go once more
and we should then go into the other half so here we go again
so you'll see the dc current start to rise up
and we'll see how much of that dc current is required in order to take out
the rcd so it's gone out this time at uh 5.1 and
what's really nice there is we've got a big green tick suggesting
all of those tests are correct wow let's just take a little breath there
there was absolutely nothing difficult about that the ez
kept its name going and didn't require any you know major effort to reset the
rcds simple case just removing it and the results gordon
the results yeah it's a pass but it also shows that how powerful that
auto test function is in the metrel 3155 as well is there anything also
going on in the back story for easy just clear the
table off gary we've been watched while this video was going on and i'll
show you more so while you've nipped off to get your
laptop i've got my glasses you've got a funny feeling going it's going to get
technical now well i did all the technicalities in the
last video gary and one of the really technical things i had to do was make
sure the color on the screen here match the color of the cover on the
charger so you telling me the ev charging point here i'm looking at with
the red cover on is actually the one just here that's it and the
communicating via the mobile phone network at the minute could be wi-fi but
we're still a mobile phone there you can see that there
and the status of that is exactly the same as the status of the charge have
here so if i was to trip this ev charging
point now you're telling me the status on the screen would actually change well
let's see how fast that has have a look okay so you're ready to go there right
take your first test so that will trip it's going to trip
currently it's white on here it's just gone red
it's just gone red wow what else can it now tell you when you look through the
system okay so what's easy done they've they can you can interrogate the charge
and find out the 60 different parameters from the current rating what the network
performance is like even the temperature of the charger
itself so you could do all of that diagnosis before going to site if you
had a fault if you had a fault yeah you'll have a pretty good idea before
going there what's wrong and if i scroll down here gary getting
incredibly naughty because he's in the activity register
here let me guess it's had a few uh you know a lot of ground faults as we've
been making this video not suggesting there's any problem with the
charger itself it's just that we're doing a lot of testing
to learn about this this procedure so not just an incredibly clever tester
that we really like but also the easy and the back
office also very sophisticated piece of software huge so let's just see how
quickly that resets okay so i'm looking again it's red
it's just gone yes wow that is really quick
really quick so as always at efix we're always interested in your opinions are
you currently installing ev charging points have you tested a lot of ev
charging points what's your feedback what can you recommend to us maybe where
we should be looking next we'll be interested in your comments below and
we'll try and get back to as many as we
can