How to test 3-phase motor using MEGGER meter ? Winding resistance and insulation test.

#megger #megger_meter #megger_test #motor
megger test 3 phase motor
insulation resistance test 3 phase motor
Fluke megger meter
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[@chnbrs4074]

So should we connect the plus end of the megger to the body or to the winding? so how should the correct polarity be?

[@yubachuck8961]

Firstly: What is the allowable value of the insulation resistance? Secondly: You must reverse the connections of your device, the positive terminal will be connected on the winding and the negative terminal on the the motor housing. Good luck!

[@eugeneeugene3313]

Why polarity matters?

[@mariuskiudulas4498]

@@eugeneeugene3313 it doesn’t , not in insulation resistance test

[@sattyamkumar4874]

@@mariuskiudulas4498 It matters specially in the case when the body remains connected to earth essentially supplied voltage and induced charge will be transferred to ground and you will not get correct reading.

[@pazhmalai]

Can u pls tell me acceptable meggar value?

[@jeffreystroman2811]

​@@pazhmalai It is usually listed in the spec sheet for the individual motor. Your looking for winding insulation breakdown so there should be a range of acceptable high Z readings, the ideal and the just barely usable numbers

[@abieladanga3111]

Interesting

[@falgunpatel9579]

Apart from this tests which one is insulation resistance (IR) test?

[@patrickpower6668]

That is the IR test, commonly known as ‘meggering the motor)

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@innocentmutanga5325]

Thankx

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@user-wz6pr5kn7d]

Excellent ❤

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@juancarlosgalvan6031]

Very good👍👍👍

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@mikeadler434]

👍👍

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@Idrathernot.]

Where are the equivalents to 7,8 & 9 leads?? What kind of sorcery is this?

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@IK-qu9hw]

Sir motor windings are connected in star or delta ? Bcoz there's no strip.

[@EASYPLCTRAINING]

In start I removed the strips .... Motor was in star

[@IK-qu9hw]

@@EASYPLCTRAINING then neutral??

[@EASYPLCTRAINING]

Three phase motor don't have neutral

[@IK-qu9hw]

@@EASYPLCTRAINING ok thank you sir. But if you want to make star then you can simply connect strip and give 3 phase supply.

[@sattyamkumar4874]

@@IK-qu9hw You don't know what you are talking

[@wd8557]

Should have shown a bad one.

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@user-ll2ve5bj2w]

Is it a 1000V megger or 500V megger?

[@michealkigwat5996]

Depends on your induction motor

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@ahmedyasinhassanuur312]

Simplify about the motor

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@garbo8962]

Taking too much time. Out in the real world the production boss demands quick but accurate troubleshooting. I was an industrial electrician for 50 great years and NEVER removed jumpers on an POS IEC motor or wasted time measuring resistance from IEC motor coil to another. If a winding is shorted or grounded does not matter because motor must be replaced ASAP. Ran several 480 motors with 5 meggerohms from motor coil to ground. You placed one merger lead on a painted surface . A big no no . Must be clipped to ground screw or bare clean metal. Should tell people that merger voltage is supposed to be double the line voltage plus a hundred volts so you need a 1,000 volt merger to properly measure a 480 volt motor. I own a nice 5,000 volt merger that found grounds in several 4,160 volt motors over the years.

[@axelateon1384]

I tried what you said and insulation test gives me infinite tera ohm so.. its really efficient but no accurate especially when writing reports

[@MackLife87]

What brand 5vkv megger you got, just ordered a 1kv and now realize 5kv what I need also

[@christianandales9419]

How much is the recommended result or the passing result of the insulation test?

[@MackLife87]

@@christianandales9419 it a set number scale you can google for Dar testing or Pi testing but as far as insulation in ohms, the manufacturer of motor would know true ohms of windings, best to check a brand new motor and keep up with it over time to see the degradation

[@veerkumar3452]

How much should be minimum ir (megger) value for a 3ph induction motor

[@electricsbangla]

এই মোটরটি কি কাজে ব্যবহার হয়

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@Joey-JoJo-Jr.64]

I don’t see a MEGGER. I see a FLUKE tester.

[@aldinandigodinez9740]

It is unnecessary to remove the star connection when doing insulation resistance test.

[@CadenaMrMark]

better to remove sometimes it may affect the reading

[@aldinandigodinez9740]

Tell me how does it affect the reading in your opinion?

[@andrewburn8611]

You wouldn’t go through all the trouble of insulation testing without continuity testing as well.

[@intonsify]

No need to remove.. Perform testing with the motor connected either star or delta.. This will test all the windings insulation to the body.. You may proceed to test individually when your first test has resistance below the acceptable value and you want to find which phase winding has the problem..

[@eugeneeugene3313]

You surely have to Remember you want to test not only isolation to the ground, but also isolation of individual windings.

[@rajinmithra7459]

How to test the winding insulation of a submersible motor using a megger meter(Rish insu 20 insulation resistance tester) kzbin.info/www/bejne/aImcnXiLm6utqJo

[@javeedhvactechnician7760]

kzbin.info/www/bejne/qYiTc4SKqb9oe9Usi=M-YzYU8YvxGgKSG7

[@papakutty8843]

Please explain with audio this is not useful.. can't understand for freshers