Fluke is among the best though and I trust them more than a cheap 2 or 300$ megger or even a multimeter, I've only ever used fluke multi meters. When your life is in the hands of a tool of any kind, I don't believe in saving money on on that sort of purchase. And I don't like seeing anyone else doing it either.
1 megohm at 500vdc is the minimum acceptable range and is a pass, anything between 1 megohm and 2 megohm further investigation is required , we should be looking for a reading of 1megohm to infinity. Anything less than 1 megohm tells us there’s a problem with that equipment we are testing.
Hey man, another great video. I got a megger when I started in industrial. Never used it much. Do you know of any charts showing the voltage settings and ohm ranges for different motors on different voltages settings? I really want to become more proficient with my megger.
Megger test values vs motor voltage tests: 208v motor ( megger voltage 500 ) 460v motor ( megger voltage 1000 ) Industry standard is 1 megohm per 1000v That said what Holden states is what you should go by. I personally use the PI and DAR tests. They are timed tests that have a ratio value to show the condition of the leakage to ground aka insulation test. PI RATIO: 1.0-2.0 is questionable. 2.0-4.0 is good Greater than 4.0 is excellent DAR RATIO: less than 1.25 is questionable 1.26-1.6 is good 1.6 and above is excellent
Thanks man for the whys and what to look for. Maybe I didn’t understand or missed it but what voltage settings do you use based on motors and their operating voltage?
Just to piggyback off of the original question because I've heard different things. Is this acv or dcv? I heard dcv but just wanted to confirm this. Thanks and great videos by the way!
It's so nice to hear an experienced HVAC tech not mindlessly shill Fluke products for once. Great video, love the channel
Fluke is among the best though and I trust them more than a cheap 2 or 300$ megger or even a multimeter, I've only ever used fluke multi meters. When your life is in the hands of a tool of any kind, I don't believe in saving money on on that sort of purchase. And I don't like seeing anyone else doing it either.
Hahahaha
Thanks! clear, concise,makes sense, easy to understand and hear, I am going to buy one right now !
You are helping me tremendously in my career.
Thanks
Thanks for your video. Learn a lot from it
Excelent explanation!!
Great video👍🏻
Good explanation and good vid ...Thx ...
Thanks for the video, very informative. So is it best for motor to be at ambient temperature to use the Meg for a accurate reading?
Best to be at operating temp
1 megohm at 500vdc is the minimum acceptable range and is a pass, anything between 1 megohm and 2 megohm further investigation is required , we should be looking for a reading of 1megohm to infinity. Anything less than 1 megohm tells us there’s a problem with that equipment we are testing.
Hey man, another great video. I got a megger when I started in industrial. Never used it much. Do you know of any charts showing the voltage settings and ohm ranges for different motors on different voltages settings? I really want to become more proficient with my megger.
I think Fluke has released some material but other than that I wish I did.
Megger test values vs motor voltage tests:
208v motor ( megger voltage 500 )
460v motor ( megger voltage 1000 )
Industry standard is 1 megohm per 1000v
That said what Holden states is what you should go by.
I personally use the PI and DAR tests. They are timed tests that have a ratio value to show the condition of the leakage to ground aka insulation test.
PI RATIO: 1.0-2.0 is questionable.
2.0-4.0 is good
Greater than 4.0 is excellent
DAR RATIO: less than 1.25 is questionable
1.26-1.6 is good
1.6 and above is excellent
@@jasonjohnsonHVAC thank you buddy your the man
Thanks man for the whys and what to look for. Maybe I didn’t understand or missed it but what voltage settings do you use based on motors and their operating voltage?
never exceed 2x the rated voltage. so 460v motors I test at 1000v and 208v I test at 500v max.
@@HVACTIME thanks bud! Love your stuff.
Just to piggyback off of the original question because I've heard different things. Is this acv or dcv? I heard dcv but just wanted to confirm this. Thanks and great videos by the way!
@@johnnys3602 dcv
Where ya located
Austin Texas USA
20 million 40 billion million….just say mega-ohm and giga-ohm my guy. 🙄