Why DC Voltage is used in Megger / Insulation Resistance(IR) Test? - Electrical Interview Question

Why DC voltage is used in insulation resistance test or in megger test has been explained in Hindi.
Concepts of insulation resistance test & working of megger or how does insulation resistance test work has been also explained for understanding the question.
Why DC Voltage is used in Megger / Insulation Resistance(IR) Test? - Electrical Interview Question
Chapters:
00:00 Intro-Why megger is DC not AC?
00:53 Importance of IR test
01:26 How does Insulation resistance test / megger work?
03:59 Why DC is used in megger?
CONCEPT DISCUSSED IN THIS VIDEO:
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1. insulation resistance test,
2. insulation resistance test megger,
3. megger & its use
4. why we use dc supply for megger test,
5. Why megger is DC not AC?
6. Is Megger test DC or AC?
7. Why does Megger have DC generator?
8. Why DC supply is used in megger?
9. Why is DC voltage applied in an insulation resistance test?
10. why dc voltage is used for insulation testing
11. Why is DC voltage applied with insulation testing megger?
THIS VIDEO IS FOCUSED ON:
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1. Electrical Engineering
2. Electrical interview questions and answers in hindi
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#ElectricalTalks
#Megger
#InsulationResistanceTest

[@ashoklingala6273]

Excellent sir , these concepts are very useful for power plant and electrical engineers. Need more Thermal power plant related concepts

[@ElectricalTalks]

Thanks 😊

[@surendrakverma555]

Very good. Thanks 🙏

[@Chandan_Das-Electrical_Engg.]

Sir, very very thank you

[@ElectricalTalks]

So nice of you

[@priyaranjanmallick8362]

Sir , One very generalized approach in this regard , is that - to check whether the Insulation is capable to sustain the stress imposed by the Voltage without actually breaking down , the stress itself must be of continuous nature which is truly not possible in case of A.C. . My understanding may please be reviewed & acknowledged Sir .

[@ElectricalTalks]

Its true for hipot dc test. how you can check stress handling capability of a 6.6 kv motor by applying 1kV dc. Your this statement seems inappropriate at this case. correct me if you think otherwise.

[@akashsenta3601]

Respected Sir, Please explain advance concept of Finding DC fault in system without any equipment (Detection instrument) Desi rit

[@kamleshmaheriya2366]

Very nice video sir

[@ElectricalTalks]

So nice

[@sunnypatel7409]

Can you make a detail video for Partial Discharge and Tan Delta, VLF testing ? Thank You.

[@mangeshpawar5308]

nice explanation

[@TOXIC-t2d]

Sir please make video on dielectric discharge test and tan delta test of motor

[@AhmadSamman-fs4ri]

Is there any similar video in English?

[@priyaranjanmallick8362]

Sir , One more thing also I would definitely like to mention ,i.e., application of A.C. voltage can result into measurement of the impedance concerned , not really the resistance in deed . My understanding may please be reviewed & acknowledged Sir .

[@ElectricalTalks]

Ok. explain me why we are only interested in measurement of resistance? why not capacitance or other components.

[@user-wm5ti1od6r]

Sir your videos are so nice. May i please know which app you are using to make teaching videos

[@rajibadhya8653]

awesome

[@Deepak_Kumar1993_]

Thank you for answer , i did this question

[@ElectricalTalks]

Yes, it was your query. I am happy for mentioning you at the end of the video. the logic clear now?

[@priyaranjanmallick8362]

Sir , Direction of Flow of Absorption Current Please ...

[@Deepak_Kumar1993_]

@@ElectricalTalks yes sir, thank you ...... your contact details plz

[@learnbyshiva725]

Sir good morning l have a question about synchrones genrator for field failure relay setting with its concept sir pls explain this subject in your video.

[@ElectricalTalks]

Ok I will...

[@arunaeshwarappa365]

I have a question. Please explain. If we go as per IEC or IEEE standard, the value of test voltage levels will be different for different rated voltage machine. What is the contact behind this?

[@ElectricalTalks]

Sorry, I don't get your point brother. Different voltage rated motors have different insulation on their winding. So, isn't it obvious to test the insulation with different voltage level according to the operating voltage?

[@priyaranjanmallick8362]

Sir , Why have you modelled Absorption Current branch through Series Connection of R & C ?

[@ElectricalTalks]

Observe the nature of the current, its like RC network discharge current.

[@ashoklingala6273]

Need HT motor knowledge

[@creativevideos3892]

How much dc volt generate by megger at its rated rpm?

[@ashishswain3567]

sir grid earthing vs transformer nitual earthing kya deferent he.. aur kya grid earthing transformer nitual earthing ko loop karna sahi rahega explain sir

[@ElectricalTalks]

Ok brother. I will try to take up this topic later on.

[@aloneman-ct100]

How much voltage produced in one megger

[@ElectricalTalks]

it depends on the type of the megger. Generally, 100V to 5KV

[@bhargavteegala9071]

Do we get shock from meeggar if we touch the terminals while rotating the shaft

[@naushadmohammad2784]

Very confusing answer