Megger MFT PFC error message

[gazdkw82]

I used a friends Megger today and we both came up with an error he hasn't seen before.

We was performing a PFC test at the imcoming of a new DB.

Leads were in line and neutral ports and tester set to L-N, 2 lead test, Zmax.

As soon as you make the connection the tester beeped and flashed <PE>

We managed to get a reading but he didn't know what the error meant. Searching the internet doesn't seem to bring up much

 

[buzzlightyear]

I read the speck sheet and could not find it on their,best ring megger .

 

[Toneyz]

Which Megger test equipment was it?

 

[buzzlightyear]

Me thinks it is 1720 Ant .

 

[Toneyz]

Me thinks it is 1720 Ant .

I have an1552 going strong and I think it was the KA was too high for the meter.

 

[static zap]

(pure speculation , does it want a PE reference to
confirm "polarity" )
...No I have yet to read that Meggers Instructions..
( So many "features" ... n-tweakable-settings
can get in the way sometimes )

 

[buzzlightyear]

I have looked on the list of fault does not show up the fault .

 

[Charlie_]

Did you also try it set to Z instead of Zmax?

 

[westward10]

If it flashed PE this is likely to indicate user error.

 

[buzzlightyear]

I had a fault once i had to ring megger.
and that was not on the list neither.

 

[Strima]

At a guess PE would refer to protective earth??? Possibly seeing the earth as a neutral?

 

[westward10]

At a guess PE would refer to protective earth??? Possibly seeing the earth as a neutral?

Can testers differentiate between an incorrect connection between N and E on a TN system assuming that is what it is.

 

[gazdkw82]

Did you also try it set to Z instead of Zmax?

Yeh tried it on Z. It seemed to work ok. Put it back to Zmax and it worked as it should

 

[Strima]

Can testers differentiate between an incorrect connection between N and E on a TN system assuming that is what it is.

I honestly don't know, just throwing an idea in the really confuse the mix...

 

[Bobster]

Can testers differentiate between an incorrect connection between N and E on a TN system assuming that is what it is.

Not with a 2 wire test they can't.

An they wouldn't really be able to prove a fault with 3 wire testing, but could flag a possible warning message if the resistance of one was out of a pre defined tolerance set in the tester.

I believe the <PE> fault you have seen, is an issue where it detects the touch voltage rising on a conductor above safe limits.

This could point to a fault on the DNO side of things, although only speculation. Call Megger an find out what the code means.

Edit: New batteries in the tester? Or if rechargeable, they weren't low?

 

[telectrix]

as Rob suggests, it would seem that PE would indicate a voltage on the PE. however, OP says he was using 2 leads L-N. possibly be a N not tied down to E due to a poor connection. I found 1 of those causing a high Ze. turned out the jumper from N-E in a PME head was loose.

 

[Bobster]

as Rob suggests, it would seem that PE would indicate a voltage on the PE. however, OP says he was using 2 leads L-N. possibly be a N not tied down to E due to a poor connection. I found 1 of those causing a high Ze. turned out the jumper from N-E in a PME head was loose.

This was my initial thought too.

Although a call to Megger an probably some more testing will be required.

 

[buzzlightyear]

when testing on the megger ,which I think he has from previous posts the megger would show not connected if he has not connected write .

 

[buzzlightyear]

MEGGER MFT1700 SERIES USER MANUAL Pdf Download

View and Download Megger MFT1700 series user manual online. MFT1700 series Multifunction testers. MFT1700 series test equipment pdf manual download. Also for: Mft1710, Mft1720, Mft1730.

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[telectrix]

MEGGER MFT1700 SERIES USER MANUAL Pdf Download

View and Download Megger MFT1700 series user manual online. MFT1700 series Multifunction testers. MFT1700 series test equipment pdf manual download. Also for: Mft1710, Mft1720, Mft1730.

www.manualslib.com

we like manuals. they get downloaded, printed off, put in a drawer never to be read.