I still got this little megohmeter. It's been about 8 years now since I purchased it. It fits comfortably in my bag and its light enough to have it on me at all times. As a troubleshooting tool it works great but for maintenance where the customer requires insulation tests annualy you gotta bring out the pricey big boy.
Nope you are testing the resistance between each leg to ground/motor casing. For checking resistance of windings you just use a typical multi meter with the ohmmeter function. The reason for using the meggohmeter for insulation testing is you can find issues regarding the insulation quality that you will never find with an ohmmeter as it doesn't push out enough voltage to effectively test it.
Why is anyone using a meter like this? Youre just testing resistance, use a multimeter. Resistance on the windings to ground should *always* be infinite. That good-caution-bad scale is pointless. If one of the windings has any path to ground at all, it's shot. Even further, this isn't even a good test of the compressor. You should be checking resistance between windings too, and comparing them to each other. You can't add up the actual ohms here because it doesn't give you precise numbers. Buy a multimeter, this thing is garbage.
Multimeters have a limit as to how far they can test with the internal battery. A Fluke 325 can go to 40 K ohms and the 902 does 10 K ohms. However a megohmeter can go way above that threshold and give you information whether you are having insulation issues. Maybe it's a motor that shorts out every now and then during its run time and a regular meter can't pick it up. That's where the megohmeter shines. Some commercial/industrial clients also require insulation tests and their readings as part of their maintenance contract.
You use a megger to STRESS THE WINDINGS! You can't stress the windings on 9volt and pen light batteries! You need to apply double the voltage DC at 1 milliamp rating. Example: I've had condenser fan motor on a package units often have a infinite reading on my fluke 87v a rainy day I had a callback as moisture penetrated insulation and fan shut down. Especially in equipment outdoors. Yes you do need to ohm out windings. The technician was just giving a simple demonstration. Most compressor manufacturers allow 25 megohm minimum due to motor being submerged in oil. You don't need pi/dar testing just spot on hvac motors. I would recommend the Klein et600 for hvac technicians. You should use a 1kv on 460 v motors.
I still got this little megohmeter. It's been about 8 years now since I purchased it. It fits comfortably in my bag and its light enough to have it on me at all times.
As a troubleshooting tool it works great but for maintenance where the customer requires insulation tests annualy you gotta bring out the pricey big boy.
Derick el mejor te sigo vine q ver este aparato te consegui por acá saludos
With shipping to Spain it costs about €100, is it worth it? Greetings Derrick 🛠️🛠️🛠️🛠️💪💪💪💪💪
Thank you sir! Very to the point and straightforward explanation
That megger is the best thing I bought when i was starting out.
I use mine almost every day, good video
Why would anyone use this over just a multimeter?
It's great to show home owners n Business owners compressor conditions helps
I just test at the contactor, is that the same thing?
Yes
It's best to check the compressor so you don't get a false reading due to bad wires..
Thanks for sharing your knowledge
Thank you so much for your vedio showing the proper test of compresss👍👏👏👏
Helpful and interesting video. Thanks for sharing your knowledge w us. ⭐️⭐️⭐️⭐️⭐️
I bought klienET600 it says 4000 m ohms. What is Home value should be and what is bad ohm value on compressor
I have a Megger MIT 420/2, I love it.
That is a top notch megommeter! I have a fluke 1520.
Can you not use multimeter for this ? Whats the difference?
great video, thank you for sharing!👨🏻🔧
I appreciate the effort you put in these video's
Do you recommend a certian megaphmeter ? Something not too expensive whatndo you think about klien ?
Wouldn't u also go between the terminals as well
Nope you are testing the resistance between each leg to ground/motor casing. For checking resistance of windings you just use a typical multi meter with the ohmmeter function. The reason for using the meggohmeter for insulation testing is you can find issues regarding the insulation quality that you will never find with an ohmmeter as it doesn't push out enough voltage to effectively test it.
Interesting video.
Great vid I also have this tester and it’s a life saver 👍
What’s the value of three face compressors
What' are the three pins on the motor that is used in the test? Please reply
those would be your common start and run windings
Dear sir iam ac technician what is acceptable value air conditioning compressor please let me know
Gracias amigo por la traducción fuerte abrazo sigue asii colega bendiciones
Enjoyed video.
Well done
Thank you! Stay tuned for new videos every week 🔧⚡️
39 / 5000
Resultados de traducción
how long is the useful life of this equipment?
nice video that one is very handy I like it
Очень хорошее и познавательное видео!
Is only good for reciprocated compressor not for scroll compressor. 😮
JUMPERMAN TECH A+++
Nice
Cool
Used this thing in the field, no luck the thing changes its mind not 100% sure about it.
How come this guy gotta wear big gloves?
I used this on a compressor told me. Compressor was good compressor blowing on overload I do not trust this thing
You can have good insulation and still overload 😂 Sorry for your luck
Guess you used it incorrectly 😮
Why is anyone using a meter like this? Youre just testing resistance, use a multimeter. Resistance on the windings to ground should *always* be infinite. That good-caution-bad scale is pointless. If one of the windings has any path to ground at all, it's shot.
Even further, this isn't even a good test of the compressor. You should be checking resistance between windings too, and comparing them to each other. You can't add up the actual ohms here because it doesn't give you precise numbers.
Buy a multimeter, this thing is garbage.
Multimeters have a limit as to how far they can test with the internal battery. A Fluke 325 can go to 40 K ohms and the 902 does 10 K ohms.
However a megohmeter can go way above that threshold and give you information whether you are having insulation issues.
Maybe it's a motor that shorts out every now and then during its run time and a regular meter can't pick it up. That's where the megohmeter shines.
Some commercial/industrial clients also require insulation tests and their readings as part of their maintenance contract.
You use a megger to STRESS THE WINDINGS! You can't stress the windings on 9volt and pen light batteries! You need to apply double the voltage DC at 1 milliamp rating.
Example: I've had condenser fan motor on a package units often have a infinite reading on my fluke 87v a rainy day I had a callback as moisture penetrated insulation and fan shut down.
Especially in equipment outdoors.
Yes you do need to ohm out windings.
The technician was just giving a simple demonstration.
Most compressor manufacturers allow 25 megohm minimum due to motor being submerged in oil.
You don't need pi/dar testing just spot on hvac motors.
I would recommend the Klein et600 for hvac technicians.
You should use a 1kv on 460 v motors.
throw away this meter and buy something better.
Buy me a fluke 1587 or 1507 for me baller