VFD Braking Resistor Calculation | Breaking Resistor Ohm & Wattage | VFD Braking

VFD Braking Resistor Calculation | Breaking Resistor Ohm & Wattage | VFD Braking
This video is about how to Calculate the resistance & Wattage of Braking Resistor used in VFD.
It's important to select correct size of Braking Resistor. Because the lower the value the faster it can stop the motor & the more heat it will generate.
#brakingresistor
#brakingresistorinvfd
#brakingresistorcalculation
#dynamicbrakingresistor
#dcbraking
#brakingmethodofvfd
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[@NerdyNairTech]

NOTE : At 3:56 by mistake I said 775.5 X 2 it's actually-> Get square of 775.5 that is 775.5 X 775.5 = 601400.25 divided by 3300 = 182.2425

[@yohanesrochadim.mar.e4725]

Thank you very much Mr. Nair for the practical explanation that I have been looking for all this time. Very easy to understand, greetings from Yohanes Indonesia, success

[@TheGrEEnadiers]

Easiest calculation that i have found. Keep up good work!

[@evandroleandro5277]

Very good the video, I searched a lot on the subject, however, this video solved all my doubts you very much.

[@NerdyNairTech]

Glad Could be of help to you.

[@Conroyen]

Brother what happen when braking resistor flows 2 amp current during normal run of motor with VFD

[@vorapobautomation9760]

I use 1.5/100 kw brake but the output go in to PLC sometime cause of fault. How ca I solve it ?

[@ToronydaruTDH]

Very useful. Thanks a lot!

[@sangn1696]

Can I get the percentage of torque from a motor nameplate?

[@satyaprakashsingh4581]

Good nair keep it up

[@Logicmart5754]

Mr Nair, I'm using Delta VFD 450C43S-00, 45KW in my project along with DBU VFD4045. How to select BR (Brake resistance) and wire size between VFD to DBU and DBU to BR. Please suggest the type of OLR as well for Brake resistance.

[@JesusRodriguez-ku9kg]

Where do the 1.5 and the 10 come from?

[@shubhamsaluja1992]

How did you get the value of 182.24 ohm 775*2/3300

[@generalleeloaded]

​ @Nerdy Nair Tech Please answer this question so I am not wasting my time here, Thanks!

[@NerdyNairTech]

Get square of 775.5 that is 775.5 X 775.5 = 601400.25 divided by 3300 = 182.2425. Hope you got it.

[@NerdyNairTech]

You are not wasting your time bro. Pls be Subscribed, more tutorials are on the way.

[@aymnslah7096]

Thanks for the good information

[@omargaray9457]

Hello, I have an issue with my dynamic breaking, I'm using a Delta VFD-EL for a 220V, 2 HP motor, the manual says that I need to use a BUE-20015 dynamic break module with a 100 ohm and 300 Watt resistor, my trouble starts as soon as I turn on the VFD, the resistor starts to burn, I've already burn one resistor, Do you have any idea of what can I do or what could be happening? Bests.

[@NerdyNairTech]

Okay so where did you connect the resistor to? Did you use the Brake module?

[@omargaray9457]

@@NerdyNairTech Thanks a lot for your answer 🙏, I connect the resistor to the break module, an the module to the VFD (+) & (-), the resistor to the B1 & B2 terminals of the module.

[@omargaray9457]

@@NerdyNairTech By the way, the module doesn't overheat, is just the resistor, and I also have connected the resistor directly to the VFD and the results are the same "overheating".

[@omargaray9457]

Today I have checked the voltage between the resistor terminals and it is always having 350V DC, it is never on 0V, Any thoughts what could it be?. Bests.

[@Logicmart5754]

Nicely explained

[@biswajitkhilar4042]

Why to devide 10 ? What is the reason

[@NerdyNairTech]

Motor peak power divided by 10 to get brake resistor power rating.

[@farhatunraihan1902]

Hello. Is it the percentage of braking IGBT is same for all model?

[@NerdyNairTech]

Mostly If for Heavy braking apllications such as Crane, Hoisting etc you can refer to the manual for Resistor specification as per the VFD manufacturer. You can also send the model no. and I will try to give link for the Manual.

[@farhatunraihan1902]

@@NerdyNairTech im using Aqua drive

[@NerdyNairTech]

@@farhatunraihan1902 Model No.? and KW

[@farhatunraihan1902]

@@NerdyNairTech im not sure about the model no but im using danfoss brand for 15 HP

[@DamithRathnayake]

Tx❤

[@PTinvest]

Great , can you show me in video how to wiring the VFD 2,2 kw at : + fuse + safety relay + filter + braking resistor + contactor + e-stop + reset button + switch main power

[@NerdyNairTech]

Yes

[@aasouz7141]

Why tge breaking register is getting overheating

[@NerdyNairTech]

The rating may not be according to the requirements

[@SK-uo2wo]

Which parameter needs to be set for braking resistance

[@NerdyNairTech]

For which drive?

[@GauravSharma-ys3vv]

@@NerdyNairTech yashkawa drive

[@kimberlyjacobsen4148]

Have a 2.2KwH Spindel. Got a electric heater 500W 100~ Ohm. Should work fine as breaking resistor 🤟 (fingers crossed)

[@NerdyNairTech]

Should work but life of heater will be less it burnout.

[@qliqelabdelkarim5416]

THANKS BROO

[@anisnono4169]

hello . i have hitachi inverter 3G3MX2 11kw, and i connected braking resistor 100 ohm , but alwyas i have problem error E06.3 ,E06.2, ....i try to adjust: b090, b095, b096,b097, these parameters many time but th same problem

[@NerdyNairTech]

Will check & tell. Send pic of vfd

[@anisnono4169]

@@NerdyNairTech I send you in messenger

[@devadsp2010]

What is this 10

[@anggaradedy]

hello Nerdy.. I have put calculation from your formula. Inverter Rating is 132 kW I found the resistor value = 3 ohm and power rating = 19.800 watt is that correct ? pls let me know.. thx

[@NerdyNairTech]

What is the Application?

[@NerdyNairTech]

Yes it's correct. 3Ohms & 19800 Watt or 19.8 KW

[@anggaradedy]

@@NerdyNairTech using your formula..

[@anggaradedy]

@@NerdyNairTech many thanks for your answer

[@NerdyNairTech]

@@anggaradedy Which VFD are you using? The manual or catalog will also have the exact rating according to the same.

[@nsnnsn5445]

Where is duty cycle

[@mathiyazhaganramalingam2254]

Same video but in Hind I saw