Megger calibration

[ryansdad]

Hello all! Been lurking in the shadows for quite a while and thought it was about time to show my face! Also got a question- I qualified/registered as a DI with the nic last year, as yet not done any work apart from rewire a relatives bungalow but I need to get my megger calibrated before I do the cert. Any of you know where I can take/send it and an idea of cost? I'm in North Wales btw. Ta

 

[green-hornet]

Take it to your local electrical wholesaler they can send it away for you, it normally cost between

 

[Apache]

Have you seen this thread

http://www.talk.electricianforum.co.uk/showthread.php?t=177

http://www.onsitecalibrations.co.uk/index.htm seems to come highly recomended

And welcome

 

[ryansdad]

Thanks chaps, might give that guy a go

 

[Evans Electric]

You can be arrested for lurking in the shadows.

Welcome to the asylum.

Deke

 

[mcgaw81]

Have you seen this threadhttp://www.talk.electricianforum.co.uk/showthread.php?t=177

http://www.onsitecalibrations.co.uk/index.htm seems to come highly recomended

And welcome

I can recommend mike, it cost me

 

[a1]

ryansdad, that ID sounds familiar? :| SF by any chance?

Welcome Aboard.

Good to have you here.

 

[ryansdad]

SF? what that? Whatever it is I'm not! ryansdad simply cos my boy is called ryan and i'm his dad! (or so I was told). Severe lack of imagination when choosing a username I'm afraid. Ta for the welcome anyhoo

 

[a1]

Sorry, Anyhoo - Glad you came out of the shadows and posted.

Just the other lurkers to follow now.

 

[Apache]

SF? what that? Whatever it is I'm not! ryansdad simply cos my boy is called ryan and i'm his dad! (or so I was told). Severe lack of imagination when choosing a username I'm afraid. Ta for the welcome anyhoo

SF is screwfix

 

[Janice]

Hello all! Been lurking in the shadows for quite a while and thought it was about time to show my face! Also got a question- I qualified/registered as a DI with the nic last year, as yet not done any work apart from rewire a relatives bungalow but I need to get my megger calibrated before I do the cert. Any of you know where I can take/send it and an idea of cost? I'm in North Wales btw. Ta

Did you purchase it with a calibration certificate? Just because it's over a year old it doesn't mean it needs calibrating IF it hasn't been used very much. Meters don't go out of calibration (except for a flat battery) if they sit in their case for a long while.

NIC and others are starting to suggest that meters get recalibrated every three years if your interim checks are OK.

J

 

[green-hornet]

Did you purchase it with a calibration certificate? Just because it's over a year old it doesn't mean it needs calibrating IF it hasn't been used very much. Meters don't go out of calibration (except for a flat battery) if they sit in their case for a long while.NIC and others are starting to suggest that meters get recalibrated every three years if your interim checks are OK.

J

We have to have an anual calibration with the NICEIC.

Plus the usual monthly calibration checks.

 

[Janice]

We have to have an anual calibration with the NICEIC.Plus the usual monthly calibration checks.

Fair comment, GH, I'm still trying to find the link to the NICEIC statement and will retract until I find it.

J

 

[green-hornet]

Fair comment, GH, I'm still trying to find the link to the NICEIC statement and will retract until I find it.J

I do know there was a major statement on a recent visit with the EIC and ESC and government about reducing the level of red tape involved, so it could have been one of the statements that they released as part of this.

To be honest I think an anual professional calibration gives you some confidence in the readings that you get, well it does me anyhow

 

[batty]

ryansdad, that ID sounds familiar? :| SF by any chance? Welcome Aboard.

Good to have you here.

You got me thinking I new there was another dad it was Helens dad.

Batty

 

[NozSpark]

We have to have an anual calibration with the NICEIC.Plus the usual monthly calibration checks.

Ive just had my DI assesment and I have not had my meters calibrated for a couple of years.

I do however have a home made check box with 0.5ohms, 1.0ohms, 10ohms & 100ohms for resistance checks and 0.5Mohms,1.0Mohms, 10Mohms & 100Mohms for IR checks. I also have a dedicated socket for Zs checks and a plug in RCD to verify my RCD checks. The resistors were just bought from a local radio/tv repair shop and I mounted them in a large IP box with banana sockets.

My inspector was more than happy with my this and we had a discussion about the fact that meters should not really be calibrated on-site due to the fact that calibration should only be carried out in a temperature & humidity controlled environment. Another benefit of doing your own checks is that you are checking monthly, where as if you do an annual cal then if it needs adjustment/repair then you could effectively have 11 months of incorrect readings:O

So long as my check readings remain consistent then I will not be getting my meter calibrated in the next year!

 

[Apache]

Ive just had my DI assesment and I have not had my meters calibrated for a couple of years.I do however have a home made check box with 0.5ohms, 1.0ohms, 10ohms & 100ohms for resistance checks and 0.5Mohms,1.0Mohms, 10Mohms & 100Mohms for IR checks. I also have a dedicated socket for Zs checks and a plug in RCD to verify my RCD checks. The resistors were just bought from a local radio/tv repair shop and I mounted them in a large IP box with banana sockets.

My inspector was more than happy with my this and we had a discussion about the fact that meters should not really be calibrated on-site due to the fact that calibration should only be carried out in a temperature & humidity controlled environment. Another benefit of doing your own checks is that you are checking monthly, where as if you do an annual cal then if it needs adjustment/repair then you could effectively have 11 months of incorrect readings:O

So long as my check readings remain consistent then I will not be getting my meter calibrated in the next year!

or there's always Caltronic's gadget

http://cgi.ebay.co.uk/CalCard-Checkbox-Calibration-Check-Box-Meter-Part-P_W0QQitemZ320356370279QQcmdZViewItemQQptZLH_DefaultDomain_3?hash=item320356370279&_trksid=p3286.c0.m14&_trkparms=72%3A1683%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318

 

[NozSpark]

There is that,,,,

it wasn't around when I built mine though..

Forgot to say, there is a lot of discussion about check boxes and the fact that they need formal testing; this is untrue, they don't. If you do your monthly checks and they drift then the problem is either with your meter or check box; in this event you get your meter calibrated and start again!! Best thing to do is to carry out a cal check as soon as you get your meter back from cal then you know you should have an accurate starting point.