Output Choke for VFD - CR4 Discussion Thread

Home

Products & Services

Engineering News

Standards

Webinars

Engineering Forum

Login

CR4 Home | Electrical Engineering | Electrical Engineering

6 comments

Rate

Comments: Nested

coolguuy Participant Join Date: Jan 2013 Posts: 2	Output Choke for VFD 01/19/2013 1:24 AM
	What will be the max cable distance from VFD to motor for an output choke of 1260A , 8.6micro henry 690v .
	Register to Reply

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Join CR4, The Engineer's Place for News and Discussion!

IdeaSmith Guru Join Date: Mar 2012 Location: Out of your mind! Not in sight! Posts: 4424 Good Answers: 108	#1 Re: output choke for VFD 01/19/2013 7:24 AM
	What is the VFD worth? Better what is the rating. What is it for? The motor data? any? Why choke? __________________ Common Sense Dictates
	Register to Reply

dhayanandhan Guru Join Date: May 2008 Location: CHENNAI, TAMIL NADU, INDIA. Posts: 1851 Good Answers: 65	#2 Re: Output Choke for VFD 01/20/2013 4:15 AM
	Dear Mr.coolguuy, Max. distance should not exceed 30 Metres - after VFD. But it is better to as near as possible. DHAYANANDHAN.S
	Register to Reply

coolguuy Participant Join Date: Jan 2013 Posts: 2	#6 In reply to #2 Re: Output Choke for VFD 01/28/2013 6:40 AM
	sir, i asked what will be the distance between the choke(which is connected near and next to vfd) and motor . what will be the max distance the choke can run without failure.
	Register to Reply

PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#3 Re: Output Choke for VFD 01/20/2013 3:11 PM
	A CE-marked VFD does not need an external output choke. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
	Register to Reply

jack of all trades Guru Join Date: Sep 2006 Location: Auckland, New Zealand Posts: 8777 Good Answers: 376	#4 Re: Output Choke for VFD 01/21/2013 1:35 PM
	As there are so many variables that effect the maximum cable distance it is advisable to directly contact the VFD manufacturer for application specific advice. Alternatively some VFD manuals will have the necessary information in them. Jack - Used to sell and service VFDs. __________________ jack of all trades
	Register to Reply

rodeh Associate Join Date: Feb 2012 Posts: 25	#5 Re: Output Choke for VFD 01/21/2013 2:14 PM
	The limitaion for the cable length will depend on the slew rate of the outputstage of the VSD. Some VSDs have high slew rate henec putting more restrictions on maximum cable length with dv/dt filter to 30 m. I advise you to contact your equipemnt manufacturer to confirm the selection of the dv/dt limiter.
	Register to Reply Off Topic (Score 5)

Copy to Clipboard

Users who posted comments:

coolguuy (1); dhayanandhan (1); IdeaSmith (1); jack of all trades (1); PWSlack (1); rodeh (1)

	Got Something to Say?
	Ask a Question Start a Discussion

	Search this Forum
	Electrical Engineering: Go

CR4 Sections

	Aerospace
	BioMech & BioMed
	Chemical & Material Science
	Civil Engineering
	Communications & Electronics
	Education and Engineering Careers
	Electrical Engineering
	General Discussion
	Instrumentation
	Manufacturing
	Mechanical Engineering
	New Technologies & Research
	Software & Programming
	Sustainable Engineering
	Transportation

	Site Directories
	Forum Directory Blog Directory User Group Directory RSS Feeds CR4 Rules of Conduct CR4 FAQ Site Glossary Who's Online (77 right now) Show Members