today i'm going to take a look at the Mi3125 BT multi-function tester from Metrel
I do love a Metrel tester they come with so many great features
so previously on the channel we looked at the mi Mi3152 and Mi3155 testers from Metrel and you know a
tester from a trail will be jam-packed full of features to make electrician's life easier and
you know how we like that defects so i took this one out and looked inside the bag let's see what
I found let's have a look at what we get when we buy the mi 3125 from Metrel so there's our test
unit itself okay before we do anything with it we're going to need to put the batteries in it
so we're going to need to remove this plate on the back and insert the batteries that come with
it okay so with that off put the six rechargeable batteries that come with it so they're supplied
as well they're in the bottom here just to unload this this is the charging unit you'll need to put
those two together in order to charge up and we'll charge it up before we carry on
so i've just got pop them batteries in they'll be in here somewhere all right gas yep there's
two small batteries that go in a different probe and there's the six batteries i need
in order to start the process off so let's pop them in and we can get going um with the rest
of this video so they go they're in tightened up and we are ready to have a look what else
we've got yep does work so it does come with some charge in it i am going to charge it up
there's a lid at the top there's our charging point just there so i'm going to go off
and charge this up we'll have a look what else is in the the kit when we buy it so there we go
so what we got here then so let's unravel some of this stuff so plug in lead for our rcd for looping
sockets a standard set of three leads probes color coordinated as well as crocodile clips Gaz
you got them yep there they are so i've got the crocodile clips as well whoops okay crocodile clips so that's in that section we've also got the lead download lead it's the rs232 okay so we can
connect our test instrument in in case we want to download something another side pouch here little
soft handle strap so you want to put that on stop it rubbing against you you've got one of those
what else we've got in here we've also got the tip commander there and that requires a couple
of batteries as well so the other two batteries are required for this bit of kit so again just
pop those in these are aaa's okay or that we can use that and again once you've got it on
there's a light function on it so you can just confirm you've got it on and work in there go so
you can see that so that's that one what's next right okay pop those back in
and reassemble so that's it we've got our
soft carry bag now so we've got our full set of instructions all manual it's really clever really
well laid out as well as always with the material testers stage by stage calibration certificate
so it comes fully calibrated as well as a disk for downloading etc so that's what we've got in a kit
wow that's an impressive amount of stuff that this tester comes with so what i decided next is put
it to the test so i carried out a few of the tests that this multifunction tester can carry out let's
do a simple resistance test using the mi 3125 turned it on we can turn the backlight on and off
by pressing this button here and we're on the home screen i can scroll either left or right i'll go
right and it shows you all the tests it can carry out so we're looking at things like impedance
we've got our rcd test next resistance tests a ring final circuit etc you can see as you scroll
through you can pick the test you want to do back to the home screen and go the opposite way around
i'm going to go through to resistance so there i am i'm going to go up and down so i've got r1 plus
r2 i can go again just r2 r1 rn and then we've got little r1 the rn little r2 i'm just going to
measure resistance so i'm going to set it to r2 okay so i've got it set so you can measure the
resistance this drum of cable so i need my leads they're in the bag first time i've used them so
i'm gonna have to unravel them in order that i can do this test i've got two crocodile clips as well
so if we look on the top of the machine i need to slide it over i've been charging it up in order to
get the adapter now for my test leads so that's going to go in like so just unravel the little
tie holding them together not going to use the blue lead so i'm only going to use the brown and
green leads so i push those in and we're ready to sort out the leads and then carry out this test
so like i said don't need the blue one let's get the crocodile clips on correct guys nope
the other one we're done okay color to color that makes it look nicer so we're in like so
going to measure the resistance of the leads just to confirm they are zero so
link them together press the test button in the middle silver one
we then get we got zero so i didn't need to calibrate the leads if i did it's just there
just press this button here and it would remove the resistance of the lead so i pressed it anyhow
yep so it's still zero so zeroed out the leads and i measure to resistance now of the cable
one end of the cable just gonna put the other one on the other and then press the test button again
and i'll get the resistance of this drum of 1.5 millimeter squared singles press the test button
and i've got a reading of 0.940 so a simple ohms test there let's carry out a loop test now we've
got the plug-in adapter here i'm gonna do on a socket outlet make it nice and easy for himself
turn it on okay gonna need to scroll through to my impedance
setting so scroll through until i find impedance where are we there we are but he just says loop
at the moment and obviously i've got an rcd in circuit so i've changed it now
to low test so it says rcd there and it's a load test this always takes longer so once
you press the button it's going to take a while for it to come on the screen here
because obviously we don't want it to trip the rcd so it's going through its functions now
until we get the actual reading for the impedance of that sock outlet circuit of 0.96 of an ohm
i hope that showed how easy it was to use the buttons and work your way through the screens
in order to carry out the tests but of course it's a material tester so there'll be some more
great features to explore as well so the great features just keep on coming with this tester
you notice at the top here we've also got bt on the end bt means bluetooth see the bluetooth
symbol here meaning that you can connect it to your android device via the ame sm app so you can
transfer your data from your tester to the android device itself also you've got a green illumination
here meaning the test that was just carried out in this case insulation resistance was correct
of course if you were to carry out a similar test another insulation resistance test where
the results failed you'd see another illumination so in that case you would get a red indicator
light so let's press the button see what we get this time so the insulation resistance
test has been carried out red light has shown therefore the results have failed for that test
obviously not a unique feature to the 3125 but a little stand on the back always a nice feature
nice flat surface gives you that angle in order to get a clearer look at the display however
there is something on the back i really like here i am at the mains end maybe carrying a ring
final circuit test i'd like to have both hands free so that circle section there is a magnet
i'm just going to stick to the front of the trunk in allowing me to carry out the test with
both hands free no need to hold the actual tester itself let's have a look at another great feature
the tip commander and how it interacts with the 3125 so it allows you to scroll through the tests
by going left and right arrows as well as you can turn on the light
you can also see you've got the test button at the top there the silver one allows you to activate
the test you select as well as scrolling through different parts of the menu so it's coming through
into the memory we can see that we can recall test results etc the great features keep on
coming because you can store all your results onto the 3125 you see the memory section here this is
where they would be so we go in we can recall our results we can delete results or clear the memory
in its entirety i'll do that now just to show you how that works so go to it and just press it
press the button again and obviously it will clear your memory you can download
all the information off the 3125 as well it doesn't stop one more we'll give you
one more let's go to the rcd so rcd we know rcds are hot topic in the electrical industry
and obviously testing the appropriate so if i scroll across we can change its milliamp rating
go across again now we can change it from the ac type a type F-type we've got the EV
and now new and introduced we've got the B type RCD as well that can be tested
all right then here's another one so we've got the earth electrode test you might forgot how to
do that so let's press the help button and see what comes up so you'll get a pictorial screen
when you press that one in order to jog your memory on how to test an earth electrode
you can do that on many of them so if i scroll across again let's find a different one
let's go through for a zs test press again and there you have a picture in order to help you
try and jog your memory on how to carry out that test i've only scratched the surface of
the great features of the matrel 3125 is it a tester you're currently using is there a hidden
gem in there you want to tell the community about please leave that comment below are you currently
looking at buying a new multifunction tester and the matrelle is the one you're going to select
please leave all those comments below and we'll try and get back to as many as we can