Metrel 61557 Instaltest

[danny124]

Hi guys got a assessment coming up this monday. Got a new meter as above, but didnt come with Fused test leads, i practiced without these, and know how to use the instrument well....

I purchased the fused test leads on monday, and have done 2 Ze tests on 2 differant properties with my boss, and each time the fuse blows in the Line probe.

Im doing a Ze test as per instructions in manual, select Loop L-E, discon main earth croc clip to earth, N probe then Line Probe, press start and and get rcd message..... go to do it again, says no voltage...
I then test my fuses out the probes and the line probe fuse has blown....

I just read on here on another thread that my tester can aslo do Ze by linking up E-N probes together and clip it to earth, and put probe on line..... Well done this and got the same outcome.....

Has anyone else had this problem, i get the feeling im screwed for monday now!!!!

Cheers guys

 

[danny124]

I also must add that when i do Ze, PEFC PSCC'S on unfused test leads its works ok....

 

[Sintra]

Don't use fused leads for Ze or Zs as the fuses in the leads are only about 500mA.

When conducting these tests your meter puts out a current of about 25A therfore blowing the fuses.

 

[danny124]

so basically all that im doing is right, what about the regs about using fused test leads, is this just another contridiction that made up to make the book bigger LOL

 

[slocm3105]

But your instrument and probes should be GS38 compliant therefore your require suitable finger guards, 4mm maximum tips and fused probes

 

[robskiing]

Should not be a problem not using fused leads i had my assessment last week using the same meter just piggy back earth and neutral leads to disconnected main earth and line lead to live terminal.

 

[danny124]

cheers robskiing.... I will mention this to my assessor before we get started and see what he has to say.