Megger 1730 non trip loop....

[rich.250]

Has anyone else had the problem of it tripping rcds on non trip loop?? seems only wylex in my case.
I have spoke to megger to be told i was performing the test wrong! Quite rude tbh.
I have since spent a lot of time thinking about it and the external earth fault path it takes...
so i have tried switching the two leads polarity, as it can only go the same way.
and it WORKS
have tried it at a few jobs and even tried results on other rcds in both configurations to prove its accurate
would appreciate your feed back.

 

[stevey1983]

Same thing happeneds to me, does it on Crabtree Rcbos and Eaton Rcbos too

 

[Specialist]

Seems to be a fairly common problem with Megger Non Trip loop tests, think if you look ther'es a thread about it somewhere

 

[MarkieSparkie]

There is a known issue no-trip testing on the Megger 17xx MFTs (no known issues with 15xx models) with certain RCDs and RCBOs, particularly Wylex NSB and NSBS for NH boards. About 4 months ago Megger said they are working on a firmware update to resolve this issue. Contact Megger Technical Department for further assistance.

 

[rich.250]

Thanks for your help guys

 

[trypod]

What firmware version is it?

 

[rich.250]

How would i find out the firmware version trypod??

 

[trypod]

turn primary function knob to V turn secondary function knob to spanner symbol then the display will show version number latest shipped is V1.09

 

[rich.250]

version 1.07
only got it last week though, aparently direct from megger......

 

[trypod]

V 1.07 is the latest for the 1720

 

[rich.250]

So they sold me out of date software....
thanks for the heads up, will look into it
cheers

 

[ample current]

I have a 1730 also and ist only 1 month old and says ver 1.07

 

[applemac]

any news on a new update for the 1730? im ver 1.06

 

[stevey1983]

Mine is only v1.05 :-(

 

[applemac]

any versions ok... if it works....

 

[SPARTYKUS]

Sell them all and buy a 1552 off tinterweb for 250. Use the spare 5-700 to buy alot of beer. Drink beer. Experience no testing problems.

 

[i=p/u]

i heard somehting about swapping polarity... seems stupid to me to swap the leads around.....

 

[Fusionsparks]

Any news on the new v1.09 firm ware fixing the RCD/RCBO problem. I sent mine back due to a constant large discrepancy between high and low current loop tests. Does anyone else suffer from this on the 1730?

Megger explain the fluctuating readings by saying the meter will only give accurate reading to 0.1ohms this seems poor as the Fluke equivalent offers 0.01ohms.

The reason I mention it is that I'm still interested in the meter as I find three lead loop testing a nuisance and having to press 'test' whilst fault finding unessarsary.

 

[Fusionsparks]

It would be interesting to know if the new V1.09 firmware upgrade has fixed the RCBO tripping issue?

I had two 1730 MFTs and they both went back due to the large discrepancy between the high and low current loop test results (high was always the greater value). Has any one else experienced this whilst using the meter?
Also a loop test could be performed at the same point several times with a different value every time, it would be great to know if this has been resolved too?


I would still like one of the units as the two loop is a great idea in theory and the auto test is also great but it's all useless if random values are given and the low current loop test trips RCBOs.

Also Megger please keep your site up to date so users can check their firmware and existing faults out....not too much to ask considering the cost I think.

 

[MarkieSparkie]

It would be interesting to know if the new V1.09 firmware upgrade has fixed the RCBO tripping issue?
Also Megger please keep your site up to date so users can check their firmware and existing faults out....not too much to ask considering the cost I think.

Well said mate, it's scandalous that this issue is still going on. If this was a car the VOSA would have issued a mandatory recall by now ... Megger appear to have adopted a mushroom consumer relations policy ... feed them enough manure and keep them in the dark.