Thermal Overload Protection of Motor by Numerical Relay (Working, Algorithm & Block Diagram) | Hindi

Numerical relay working principle, block diagram & algorithm for thermal overload protection for motor has been explained in Hindi.
Thermal overload relay protection logic & working principle is very easy when it is understood properly.
Thermal Overload Protection of Motor by Numerical Relay (Working, Algorithm & Block Diagram) | Hindi
CONCEPT DISCUSSED IN THIS VIDEO:
-------------------------------------------------------------
1. Thermal overload protection for electric motors,
2. Thermal overload relay,
3. Thermal overload relay working & protection,
4. How thermal overload relay works,
5. Block diagram and thermal overload Protection using numerical relay,
6. Thermal overload protection by numerical relay working principle,
7. Thermal overload protection by numerical relay block diagram,
8. Thermal overload protection by numerical relay algorithm,
9. Numerical thermal overload relay
THIS VIDEO IS FOCUSED ON:
----------------------------------------------
1. Electrical interview questions and answers in hindi
2. Electrical engineering interview questions and answers.
3. Industrial electrician interview question.
4. Induction motor protection
Welcome to my TH-cam channel - " ElectricalTalks". You will be familiarized with conceptual electrical interview questions and answers for jobs and admissions for higher studies in an easy way.
Thank You
E-mail Id : [e-mail]
#ElectricalTalks
#ThermalOverload(49)
#MotorProtection

[@skarman1432]

I am a polumber thanks for the information

[@user-yn2jm1ce2x]

Outstanding explanation 👍

[@ElectricalTalks]

Glad you liked it

[@surendrakverma555]

Very good. Thanks 🙏

[@nilamyadav6565]

Very well explained sir...

[@ElectricalTalks]

Thanks...

[@cricketinformationcapsule]

Sir plz make video on pole slip protection

[@VKCinematics1]

Nice sir
But i have doubt
For motors already we have a Over load protection if motor runs with heavy load definately temp also become high but before that on overload protection motot will get trip...
And
Motor temp not only depends on the only motor current..we have different factors..but for this only overload factor we can save the motor but remaining factors we needs to take in consideration...
Pump side material storage, vibration, alignment...Etc

[@rohandsouza2870]

Sir make a video on control schematic

[@ElectricalTalks]

ok

[@anantabhoi471]

Nyc Explain............

[@aveekchakrabarti2069]

Plz make a video on P211 motor protection relay settings calculation..

[@VinodPrajapati-sb4ho]

Thank you

[@ElectricalTalks]

Welcome!

[@bibhubisoyi525]

Nice explanatio

[@ElectricalTalks]

Thanks

[@hrushikeshhati2009]

Can u plz explain The difference between Thermal over load and over current protection.

[@ElectricalTalks]

thermal overload protection basically acts on motor heating imaging technic using motor current, where overcurrent protection acts only on motor current where it follows certain curves depending on type of overcurrent protection used.

[@hrushikeshhati2009]

Plz make a video On T/F all Mechanical and electrical protection individually . One by one . It will helpful for all Electrical person.

[@srinusri6301]

can use in many motor and setting in side ams

[@gustavomarcelo7250]

Hi.For 49, does it trip because of Tc > 100% or the current exceeds the settting say 1.2xFLA?

[@ElectricalTalks]

T>

[@gustavomarcelo7250]

@@ElectricalTalks Then in most relay,what is the use of current pick up.setting for thermal OL?

[@ElectricalTalks]

On thermal amps setting & motor current, Tc depends. I am talking about logic of maximum numerical thermal overload relay

[@gustavomarcelo7250]

At 3:00, you showed the equation.
What is Im and I_ tc definition?What is the reference doc you used for this equation?

[@gustavomarcelo7250]

Hi.Thermal modelling is basically the equation to calculate thermal capacity used?
How do we set th and tc in the Tc formula?

[@ElectricalTalks]

You are absolutely correct.
Its generally provided by manufacturer

[@bhargavshah5019]

have you got answer by using this equation ?

[@bhargavshah5019]

@@ElectricalTalks can you please provied the source of this equation ? so i can better understand about the TC equation

[@arnabpal9945]

Why we are use ht motor above 200 kw ?

[@sujoyghosh7468]

I'd numerical relay ka model no. Kiya hein ?

[@rupalibhowmick6763]

What is K-factor in thermal overload protection

[@ElectricalTalks]

Very important concept pointed out by you. Its actually denote bias factor for negative phase sequence current, that cause intense overheating in motor as compared to positive sequence current.

[@rupalibhowmick6763]

Why it's considered in this protection setting?

[@ElectricalTalks]

To make the relay more sensitive to thermal overload. If K factor is not utilized in any relay, it will only sense the thermal status of the motor by positive sequence current only. But motor become more heated up for negative sequence current.
If you can't understand from the above explanation, let me know. I will try to clarify it further by a dedicated video.

[@rupalibhowmick6763]

Kindly make another video on this above topic

[@ElectricalTalks]

I will try to pick up this topic.

[@priyaranjanmallick8362]

Sir , Thik Hai , Achha Laga . Would you mind taking up "Why HT Motors are Star Connected'" in general ?
Aur Aap AVR ko Bhule nahin honge I hope . By the way , the best part is ~ Insulation life becoming 1/2 , if design temperature limit is exceeded by 10 degree Celsius . But it's for how much time , that you didn't tell Sir .

[@ElectricalTalks]

AVR may be the next topic

[@priyaranjanmallick8362]

@@ElectricalTalks Sir , One fundamental clarification please ~ Eddy current loss in 3 phase induction motor rotor is always neglected although almost the same magnetic flux of the RMF created in the stator , links to the rotor through the air gap ; this is only & only due to the slip frequency feature of the rotor na , there is of course no other reason except it .
My understanding may please be reviewed & acknowledged Sir .

[@ElectricalTalks]

Yes, for very low frequency at full rated speed, core losses are neglected.

[@hrushikeshhati2009]

HT Motor in Star connection bcz of starting current as HT motor power rating is high so starting current will be also high normally 6-7 times of FLC. and to reduce the costing as In star the phase voltage is 58% of line voltage. So due to low phase voltage the requirement of winding insulation is also less .
Still i suggest sir kindly make a video on this topic . By video more people will understand the concept

[@owinookello9358]

sir you have good video but kindly use also English i don't understand hindu

[@ElectricalTalks]

I understand your point. But sorry to disappoint you. Right now, its not possible for me to make two separate videos in two languages due to time constraints.
Sorry buddy.