Megger MTB 7671 CHECK BOX

[ELECNEWT]

Are these items worth the price?

Is the Megger MTB 7671 the best choice?

 

[Bobster]

What are you going to buy to calibrate that unit... and so on and so on...

What is it you're wanting it for? Just checking your own meter?

If it's for your own meter, just use a socket in your house, make notes of results, an look for discrepancies.

 

[richy3333]

Yes and no... Might be better if you say what it is as I had to search the item.

I bought a Kewtech (ashamed to admit to owning something of theirs) to use years ago. Similar to the Megger check box. However there's no reason you couldn't use a cal-card etc at a fraction of the cost. However if you want a new toy buy one

 

[telectrix]

far better things to spend on. for a new toy,

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or beer, beer, and more beer.

 

[Strima]

If checking one or two test meters then use a calcard and dedicated RCD socket.

 

[richy3333]

@ELECNEWT Just noticed you username. Cant do an elected newt but will this frog do?

 

[The Flyinhos]

Are these items worth the price?

Is the Megger MTB 7671 the best choice?

I've had one for a while, has proved useful. Depends on how many meters you run and how they are looked after. If been kicked around on building sites, may be an idea. If you do decide to purchase one, little advice do not keep in van. As travelling about and temp differences can effect them, after all when being calibrated they are adjusted by small pots on circuit board which can move with vibration / temp differences. Leave in office / home and check your meter against it every 1 to 3 months or so, depending on how much you use your meters. If you do decide to get one get in touch with @LeeBakerMegger on twitter, he will let you know who's doing best deal in your area.

 

[Bobster]

I've had one for a while, has proved useful. Depends on how many meters you run and how they are looked after. If been kicked around on building sites, may be an idea. If you do decide to purchase one, little advice do not keep in van. As travelling about and temp differences can effect them, after all when being calibrated they are adjusted by small pots on circuit board which can move with vibration / temp differences. Leave in office / home and check your meter against it every 1 to 3 months or so, depending on how much you use your meters. If you do decide to get one get in touch with @LeeBakerMegger on twitter, he will let you know who's doing best deal in your area.

Or check the forum sponsor @Test-Meter

 

[telectrix]

@ELECNEWT Just noticed you username. Cant do an elected newt but will this frog do? View attachment 50219

it would appear that the frog was not fully conversant with safe isolation procedures.

 

[ELECNEWT]

Richi3333 said @ELECNEWT Just noticed you username. Can't do an elected newt but will this frog do?

it would appear that the frog was not fully conversant with safe isolation procedures.

All you pulling my leg?

 

[chris day]

i agree, just buy the resistance cards and mark an RCD socket in the house as a test socket, NICEIC never grumble

 

[Mike Johnson]

Year old thread, but can't find anything current (sic) on the CalCard has nothing changed?

 

[Dartlec]

Year old thread, but can't find anything current (sic) on the CalCard has nothing changed?

I've had different answers from different NICEIC inspectors - some think calibration is required, others are happy with 'ongoing'. Don't think there is a strict requirement laid down.

Personally you can usually tell when readings are dodgy, and changing the leads fixes that most of the time.

I guess you can't go wrong with annual calibration - but I doubt anyone could fault you on having a cablibration every few years, with ongoing in between.

 

[Mike Johnson]

Thanks for that, any feed back on the check box's or cards themselves?

 

[Dartlec]

I had a DIY one made up from ebay for many years - but now have a CalCard - seems to work ok, though can be a bit fiddly to get a good connection with croc clips.

The ideal is to use the card against a recently calibrated instrument to get a 'base' reading, then keep a regular record (there's a template out there somewhere) - You also need a known socket to test RCD trip times against - I put a garage CU in with a single socket

What you're really looking for is the trend over time - inconsistent readings are almost always the leads, or the tester going faulty, in which case it's either repair or replace time anyway and not something calibration will fix...