PFC Testing

[E.M.F. MAN]

Hi all, I'm using a Megger 1552 tester which is a three lead tester, but DVD's I have show the neutral and earth leads connected together to test PSCC. The leads that come with the tester cannot be joined together and the instructions seem to say only use the green and red leads,I'm totally confused can anyone HELP. Cheers John...

 

[m4tty]

I think you just use two leads the green and the red. On line and neutral for pscc and line n earth for pefc. Record highest of pscc or pefc on cert. Hth

 

[m4tty]

I'm sure somone alot more knowledgable than me will be along soon to confirm if I'm right or wrong matey soon cheers

 

[sparkytim]

Yes thats right

PFC can be done using 2 leads one plugged into red terminal on 1552 and the other in the GREEN terminal.

The black terminal is only used when 3 leads are used for NON trip Zs tests when an RCD is in the circuit.

 

[m4tty]

Going on from what you said tim there are times when you need to do a PFC test when your upstream from an rcd so when this happens the three leads are needed. How do the leads go in this situation please I've got an idea but can you confirm this please. Cheers

 

[sparkytim]

Same set up as Loop test, just different position on Meter setting.

 

[Andy™]

unless testing loop through RCD's, test on 'hi' setting, and you only need red & green

you will have to do the test twice - once on L-E and once on L-N. highest value is your PFC

if testing through RCD, you can do L-N with red/green probe. for L-E, you will need to test on non trip and use all 3 probes

all above is same for PFC & loop

 

[sparkytim]

I think to get a L-N PFC thru RCD you would have to connect Red to L and Green + black onto N.

 

[Andy™]

I think to get a L-N PFC thru RCD you would have to connect Red to L and Green + black onto N.

that also applies if not going through RCD

 

[Risteard]

You can also test between phases with the 1552.

 

[NozSpark]

[quote name='Andy

 

[sparkytim]

Ditto

 

[E.M.F. MAN]

Thankyou all for your views, it must be that the megger is slightly different from other testers. Cheers...

 

[Andy™]

yes, in a good way