 |
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
jan1977 doesn't have a personal statement currently.
Personal Info
jan1977
Age Unknown
Gender Not Set
Location Unknown
Birthday Unknown
Interests
No Information
Statistics
Joined: 27-March 09
Profile Views: 149*
Last Seen: 27th March 2009 - 03:12 PM
Local Time: Sep 3 2010, 06:17 PM
1 posts (0 per day)
Contact Information
 No Information
 No Information
 No Information
 No Information
* Profile views updated each hour
|
Topics
Posts
Blog
Comments
Friends
My Content
27 Mar 2009
Need some hints on how to build a two-speed starter.
Am I correct here? : (Fan/440V/12,5A High speed) The wiring of the starter is very much alike star/delta starting; 3 contactors are needed, but 2 O/L relays. Main contactor needs to have an O/L relay for low speed, and during low speed the star contactor will be closed. For high speed I will open the star contactor, and close the "delta" contactor, which also needs an O/L relay. Is it this simple? Only difference would be the 2nd O/L relay - or do i need the 2nd at all? I assume its a single-winding motor. If we have a 2-winding motor, how should I wire this? Jan QUOTE (jan1977 @ Mar 27 2009, 03:42 PM)  Need some hints on how to build a two-speed starter.
Am I correct here? : (Fan/3phase/440V/12,5A High speed) The wiring of the starter is very much alike star/delta starting; 3 contactors are needed, but 2 O/L relays. Main contactor needs to have an O/L relay for low speed, and during low speed the star contactor will be closed. For high speed I will open the star contactor, and close the "delta" contactor, which also needs an O/L relay. Is it this simple? Only difference would be the 2nd O/L relay - or do i need the 2nd at all? I assume its a single-winding motor. If we have a 2-winding motor, how should I wire this? Jan |
Last Visitors
jan1977 has no visitors to display.
Comments
Other users have left no comments for jan1977.
Friends
There are no friends to display.
|
|
Lo-Fi Version | Time is now: 3rd September 2010 - 05:17 PM |
