Currently reading:
What is it called IR testing?
Discuss What is it called IR testing? in the Electrical Testing & PAT Testing Forum area at ElectriciansForums.net
Seen some Tutors call it Megger ohms, how can't that be righ when Megger is a Trade name? me I call it Meg ohms whats your take ?
Thanks for the reply
- Reaction score
- 1,751
I was taught "Megohm" (all one word) and that's what's in the dictionary ?
But in everyday use just "Meg", as in Family Guy ?
- Reaction score
- 2,832
The SI prefix M is Mega.
In combining the prefix with the unit name, the prefixes' final vowel is retained, except in the case of “hectare”. The American National Standard* also calls for the spellings “megohm” and “kilohm”, but the spelling “megaohm” is often encountered.
In combining the prefix with the unit name, the prefixes' final vowel is retained, except in the case of “hectare”. The American National Standard* also calls for the spellings “megohm” and “kilohm”, but the spelling “megaohm” is often encountered.
Megaohm or Mega Ohm or MΩ
It should never be truncated in spite of what the US does.
Things end up with different meanings, for example
1 millimetre is 1mm or 0.039"
1 mil is 0.001" or 0.0254mm
So giving a dimension as 156mil - is that really what you mean? Something around 5/32"
Annoys the hell out of me as insulation (dielectric breakdown) is measured in both V/mm and V/mil and people will say air is 3kV per mil - no it isn't you muppet air is circ 3kV per mm or 100V per mill (it isn't a straight conversion!)
It should never be truncated in spite of what the US does.
Things end up with different meanings, for example
1 millimetre is 1mm or 0.039"
1 mil is 0.001" or 0.0254mm
So giving a dimension as 156mil - is that really what you mean? Something around 5/32"
Annoys the hell out of me as insulation (dielectric breakdown) is measured in both V/mm and V/mil and people will say air is 3kV per mil - no it isn't you muppet air is circ 3kV per mm or 100V per mill (it isn't a straight conversion!)
- Reaction score
- 8,238
MegOhm Meter
Not
Megaohm Meter
or
Meggerohmmeter
Not
Megaohm Meter
or
Meggerohmmeter
- Reaction score
- 17,348
It’s an insulation resistance meter, combined with a continuity meter, and nowadays performs earth loop impedance and rcd operational tests.
Some might call it a multi function tester….
Others still call it a “meggar”
As for the measurements taken… it’s Megaohm
Like megawatt, megaton, etc
Some might call it a multi function tester….
Others still call it a “meggar”
As for the measurements taken… it’s Megaohm
Like megawatt, megaton, etc
- Reaction score
- 8,238
You can still pick up some lovely old meters on Ebay
- Reaction score
- 7,784
i bet her eyes light up like fruit machine .?
- Reaction score
- 8,238
They would pop out if he hocks her up to the old wind up IR tester
- Reaction score
- 3,945
Still packs a good 500V
- Reaction score
- 21
Funnily enough I managed to zap my self today walking about after forgetting to turn auto off 
- Reaction score
- 6,989
Funnily enough I managed to zap my self today walking about after forgetting to turn auto off
What meter were you using? All I've encountered don't have an auto facility for IR testing and also have a delay when test button is held for this very reason.
- Reaction score
- 9,039
Yes, for a while testers have been obliged to do this.
For some fun, you should try an old Robin KTS1620 (same as Kewtech KT62)
It's gloriously (and usefully) lethal!
Touch test and instant 250/500v/1000v to the probes, and the Test button can be locked on.....
I keep one in the van entirely for fault finding low IR, it's light, it fits in very small places and it tells you the answer in 1/10 second!
- Reaction score
- 25,677
Once the initial jolt has passed you should be able to hold on to it, one of my party tricks doesn't hurt at all.
- Reaction score
- 21
It's the kewtech 65dl. You push and quarter turn the test button. I'd hung the leads over the left hand side of the strap and they zapped the back of my hand. I can 100% guarantee it zaps on auto
- Reaction score
- 10,368
My kyoritsu (kewtech) analogue insulation tester that I use as my daily driver has a locking test button and no delay or timer and they're still available brand new. KEW 3124A - https://www.kew-ltd.co.jp/en/products/detail/01122/.
Maybe in the UK it's a requirement for them to be idiot-proof but not in many parts of the world. I see they sell the digital version of my tester in the UK which also has a locking test button and no delay before test starts....
Maybe in the UK it's a requirement for them to be idiot-proof but not in many parts of the world. I see they sell the digital version of my tester in the UK which also has a locking test button and no delay before test starts....
- Reaction score
- 21
I think kewtech is a British brand. It does disable the auto if you switch between tests types on the 2nd dial, and forces you to reset back to manual before re-engaging auto. It's a nice little MFT tbh, I like it. Only niggle is the nulling of leads can be a pain to unlock and null again. 64dl is easier to null but not very clear if it has nulled
The null on screen feels ambiguous as to whether it's ready to set null or is nulled
The null on screen feels ambiguous as to whether it's ready to set null or is nulled
- Reaction score
- 10,368
I'm not sure exactly how they're connected but Kyoritsu is a Japanese manufacturer of very good test equipment and their testers are rebadged as Kewtech in some parts of the world. One of my other favourite tester brands is Brymen and they are rebadged as Hellerman Tyton as well sometimes.
- Reaction score
- 21
One has probably licensed one from the other. All my fibre splicers are Japanese, either sumitomo or fujikura. Can't say I've had a bad experience with anything that says 'Made in Japan' on the side
- Reaction score
- 9,039
Most MFTs state compliance with IEC 61010-2-034 which I believe stipulates a 5 second delay to all IR tests. (this appears to be one of the regular complaints about the new Megger X1)
I don’t know if this is voluntary compliance or mandatory, I’d assumed it was required but in order to sell it here.
That tester you link to doesn’t mention that standard so looks like I was wrong.
That seems a really annoying long time for most test!
Maybe if it only applied above 500V it would make some sense to give folks a moment to think "Do I really want 1kV+ on this circuit?"
Reply to What is it called IR testing? in the Electrical Testing & PAT Testing Forum area at ElectriciansForums.net
Similar Threads
OFFICIAL SPONSORS
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc
This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.