MEGGER TESTING

megger testing a hvac compressor motor winding best method, also megger testing the power wires as well, a megger ohm meter can output upto 1000 volts DC thus be able to measure resistance in the millions of ohms range, in HVAC if the wire or load measures 50 to100 Megs to ground its caution ⚠️ if measures 0 to 50 Megs its bad and is considered good if measures above 100 Megs

[@safetythirdified]

This was a great tutorial for me and my class that I teach.

[@D2DNYAC]

Thanks for watching

[@jamesmesnard9902]

Dude you’re by far the best HVAC troubleshooting channel on here in my opinion. Love your content!

[@D2DNYAC]

Thanks for watching

[@apollzzie5026]

3rd year MES apprentice here. This guy explains things better than most of my journeymen.

[@D2DNYAC]

Thank you for stopping by

[@holy_diver5023]

This is the video I was looking for, great video man! Just got the klein mega ohm reader, hopefully its good. Thanks man, best video ive seen on mega ohm meters! You really explained how to use it

[@D2DNYAC]

Thanks for watching

[@brianmcdermott1718]

Great info. Thank you.

[@D2DNYAC]

Thank you for stopping by

[@octaviustyson9387]

Best Meg test video on TH-cam

[@D2DNYAC]

Thanks for watching

[@yoelsitico]

Bro thanks for the info you are a great teacher

[@kaundabwalya7776]

Man U a Super Super Pro.. U deserve more Subscribers 👍👍am in love with your Videos.. Am Learning a lot.. ❤️🇿🇲

[@D2DNYAC]

😂 🙏 Thank you for stopping by friend

[@manschool4992]

I watch your videos with a legal note pad and rewind it till I'm sure I got it. Thanks for showing me this. I was almost going to buy the Supco.

[@D2DNYAC]

Thanks for watching my friend

[@407pit]

Yes maas D2D keep it up man! 🤞🏾🇯🇲💪🏿💪🏿

[@majjatmohamed6927]

Good man I like your videos keep going mate I follow you from Coventry England

[@D2DNYAC]

Thank you for stopping by mate

[@mikestuart5119]

Brilliant video 👍

[@D2DNYAC]

Thanks

[@rickrooney7812]

Great video!
I would also add that it is a great idea to log the readings on the unit and on the service ticket, so the next time you megger the compressor you can look for degradation of the winding integrity over time.

[@D2DNYAC]

Thank you for stopping by

[@manschool4992]

That's a great idea. We have a notes section on our PM logs. This could show the customer ahead of time compressor, or motor, degradation and to prepare for replacement.

[@D2DNYAC]

I agree

[@alexibonnet2634]

Great content!

[@D2DNYAC]

thanks for watching

[@AlexBianco100]

Wow 👌 Awesome!

[@D2DNYAC]

Thanks for watching

[@sermore77]

Great content👍🏼

[@D2DNYAC]

Thanks for watching

[@alonsoacosta8545]

Gracias amigo.

[@D2DNYAC]

Thank you for stopping by amigo

[@indikaudayasaranga988]

So profitable. Thank you,

[@D2DNYAC]

Thank you for stopping by

[@Crazywill210]

Where you been? Love the videos

[@tinopratt3056]

Live your meg test.

[@D2DNYAC]

Thank you for stopping by

[@Lineman_Lithuania]

Thanks man ⚡️⚡️⚡️👌👌👌

[@D2DNYAC]

Thanks for watching

[@aramabwbakr8300]

Thanks...

[@D2DNYAC]

Thanks for watching

[@wd8557]

Excellent showing how to use a megger most guy's don't do that. You can get quick result's using a megger and be 100% correct.

[@D2DNYAC]

Thank you for stopping by

[@JCM2LA]

Great video. I've been doing this HVAC thing for a while but this is one thing not sure about. How do you know how much voltage to put in on meg test? Or just go max on what the meter allows?

[@D2DNYAC]

If the selection is available I start low then go to a higher voltage output if the equipment/ load tested good, I increase the output test voltage, I believe this will protect the mega meter in the event of a bad short

[@nass7070]

Always use it double voltage.. ex: if your motor work on 240 volts or 208 you use 500 volts on the meghometer

[@nass7070]

Here in canada we test 600 v motors with 1000v on meghometer.

[@nass7070]

Nice video and explaination sir!!

[@jasonjohnsonHVAC]

I have and use the Fluke 1587. 2.2 billion ohms scale. The windings are coated in a varnish

[@D2DNYAC]

What 😮what were you testing?

[@jollyscaria1922]

Vrey goodd met high acurcy testinv find out udinv contunivet test allgood megwr test find out tedtinv good of bad find oug testing curract testinv good ..thsnkyou gues

[@ferozeyacoob3033]

Sir thanks big time. Can you go a bit more on that thermister and the compressor overload. Im having trouble with a 60 t Aaon.

[@D2DNYAC]

I have videos uploaded already on compressor motor protectors I believe that’s you are looking for!!

[@D2DNYAC]

HVAC MOTOR PROTECTECTOR EMERSON CORE SENSE FOR SCROLL COMPRESSOR EXPLAINED .
th-cam.com/video/_VXP7wz4ckI/w-d-xo.html

[@JavierRodriguez-hf1jl]

Can you make traubleshooting for pressure switch on Rtus

[@D2DNYAC]

Hello friend I have videos on high and low pressure switches uploaded already, they function the same in whatever they are installed,

[@fisforfriendship6093]

i would ignore what he said about being able to skip testing the compressor if you check out fine from the contactor. always do comprehensive tests you dont know if intermittent issues are being caused by compressor windings barely touching the housing etc. also you will be able to tell if that compressor is on its way out soon and prevent further problems in the future

[@D2DNYAC]

Ignoring a fact doesn't change it!!!

[@jonnyocampo]

What brand megger do you use???

[@D2DNYAC]

Get it here! amzn.to/3Ql2qZo

[@ace8237]

Yes

[@D2DNYAC]

Thank you for stopping by

[@mc1412007]

Noobie here trying to get into learning hvac (with the help of skillcat and hvac guy whos working on anual servicing our 100 rtu units and teaching me at same time)How do you know if which of the 250/500/1000 options to use and which one is safe and not too high and will fry motor.

[@RJMaker]

There are 3 big reasons you perform a HV Meg test as close as possible to the windings... 1) passing electrical noise through sensitive electronics that may share earth grounding. 2) both sides of the test need to be 100% to achieve an accurate result. It's best to completely eliminate the impedance from wiring and connections. 3) If a compressor MFG is going to publish leakage thresholds (most do not) they perform these test directly at the compressor. NOTE: Copeland's AE-1294 is a MUST read.

[@D2DNYAC]

@RJ_Make great points my friend I’ll give you that, However not very logical!

[@RJMaker]

@@D2DNYAC Perhaps you can explain the breakdown in my logic?
My comments are nothing revolutionary and certainly not new. (except the electrical noise damaging sensitive electronics - which is a fairly new observation) right from Copeland's AE-1294.
Among other things it says
"Any external electrical components connected to
the compressor terminals also affect megohm readings.
Wires, contactors and relays all leak current
and will decrease compressor megohmeter readings
if not disconnected."
Bottom line is, it's always best practice to isolate the compressor completely from all external components.

[@D2DNYAC]

@Rj_make I will do another video on the subject addressing your comments so stay tuned for that!

[@D2DNYAC]

@RJ_Make in the meantime watch the video over again I did address those comments to some extent already in it!

[@RJMaker]

@@D2DNYAC It's all good, 'You keep doing you man'

[@nsudatta-roy8154]

Wha gwaaan, D2D!?

[@407pit]

🤣

[@D2DNYAC]

@Nsudatta - Roy 🇯🇲 represent 😂 👋

[@thediyguy_handson2901]

That's what my ex-girlfriend would say, "that was a good 22 minutes" hahaha

[@D2DNYAC]

Thanks for stopping by my friend

[@fisforfriendship6093]

i kept hearing the n word anyone else keep hearing that

[@D2DNYAC]

"N" WORLD ???? explain please or you mite be hearing the you will be BLOCKED word soon!