 |
Hello and welcome to LMPForum, like most online communities you must register to view or post in our community, but don't worry this is a simple free process that requires minimal information. Take advantage of it immediately Register Now There are many great features that are not available to guests at LMPForum |
Forgot Password |
LMPForum > Viewing Profile|
Profile
Personal Photo
Rating
Options
Personal Statement
chaterpilar doesn't have a personal statement currently.
Personal Info
chaterpilar
Member
Age Unknown
Gender Not Set
Location Unknown
Birthday Unknown
Interests
No Information
Statistics
Joined: 3-September 04
Profile Views: 1,367*
Last Seen: 24th September 2009 - 01:29 PM
Local Time: Mar 18 2010, 07:13 AM
165 posts (0.08 per day)
Contact Information
 No Information
 No Information
 No Information
 No Information
 Private
* Profile views updated each hour
|
Topics
Posts
Blog
Comments
Friends
My Content
27 Mar 2008
Hi !!
I have attached a sketch for grounding setup for parralleling 3 LV generators with stepup transformers. Can anybody comment on pros and cons of this arrengement of earthing, and any suggestions/comments about choice of transformers are appreciated. Cheers.
Attached File(s)
8 Mar 2008
Hi !!, We have a project to make a VFD based panel for a 2080 volts 60hz 250 hp submersible pump ( 300 metres deep). The vendor is proposing a 380 volts VFD of rated capacity and a inverter duty Autotransformer to stepup the output of drive to 2080 volts. I find it a bit odd, to put a stepup Auto-transformer in between the drive and the motor. I recommended a 2080 volts rated VSd and to put the transformer on the line side. The available supply is 380 volts 60 hz. Is it Ok to put a Auto-transformer at the output of drive? Any thoughts?
26 Feb 2008
I have seen panels with contactors on load side (output) of VSd, and some panels with contactors on both line(input side) and Load side of VSd. I personally do not use any contactors ( Load/line) for VSD. What are advantages/disadvantages of using contactors at the output and input of VSD? Any thoughts?
15 Jan 2008
AC Drives are sold with voltage ratings and HP ratings ,
now, my question is will a 40 hp 460 volts 60hz variable speed drive be suitable to be used in a place having 380volts 60 hz power supply to drive a 40 hp/380 volts motor. I feel drive has to be derated by 17%. Any thoughts..
6 Jan 2008
Gentlemen,
There is a lot of fog and theories about Variable speed drives creating stray voltages and causing problems to cows in dairy farms. I know cows are sensitive to stray voltage, but do VSd's cause such voltages ?. What are the methods to avoid/measure these voltages? Any thoughts/ideas are appreciated. |
Comments
Other users have left no comments for chaterpilar.
Friends
There are no friends to display.
|
|
Lo-Fi Version | Time is now: 18th March 2010 - 04:13 AM |
1 Feb 2009 - 6:33