 |
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 |
  |
Soft Starter, Energy saver or Losser .... |
·
·
·
·
·
·
·
·
·
·
·
·
  Dec 14 2009, 10:44 AM
Post
#1
|
|
 Group: Members Posts: 1 Joined: 14-December 09 Member No.: 7,325  |
Hi !
Normally the soft starter manufacturers claims for Energy save with their decise ! and may be effective when motor is underloaded appx 40% but in a case where motor is 80 % loaded and working with full efficiency . Do enebling of Energy save is advisable ? Will the device work as energy saver or more as a Losser ....... as it increase in Harmonics distortions in line as signal no more remains pure sine what will be ratio for Cu losses , Iron Losses , Windage losses compared to the wastage energy saved .......... |
 |
 
|
|
Dec 16 2009, 08:52 AM
Post
#2
|
|
|
Junior Member Group: Full Member Posts: 7 Joined: 22-August 07 Member No.: 3,667 |
Hi Niranjan,
If a motor is loaded at 80% then the opportunity for saving energy will be small. There will be a slight amount of harmonic distortion but this is small, the added loses for the soft starters are generally 1 Watt per Amp per Phase. To negate these affect a bypass contactor could be used. Thanks Steve |
|
|
|
|
Dec 16 2009, 05:44 PM
Post
#3
|
|
|
Posting Freak Group: Moderator Posts: 2,336 Joined: 24-April 02 From: Christchurch, New Zealand Member No.: 1 |
Hello Niranjan
The energy saver only reduces the magnetising losses in the motor and this only works when the total current is close to the magnetising current of the motor. Only use this feature if the motor a) has high magnetising losses, and  if the motor operates for a significant period of time under idle conditions.See http://www.LMPhotonics.com/energy.htm Best regards, Mark. -------------------- Mark Empson administrator
Skype Contact = markempson | phone +64 274 363 067 LMPForum | LMP Tech Warehouse | L M Photonics Ltd | Empson family | Advanced Motor Control Ltd | LMP Software | Mark Empson Website |
|
|
|
|
Similar Topics
| Topic Title | Replies | Topic Starter | Views | Last Action | |||
|---|---|---|---|---|---|---|---|
 |
34 | marke | 18,663 | 10th July 2009 - 04:11 AM Last post by: wrav001 |
|||
 |
5 | uhaykir | 4,427 | 5th July 2002 - 09:08 AM Last post by: marke |
|||
|
3 | marke | 5,073 | 24th January 2003 - 07:05 PM Last post by: marke |
|||
|
1 | marke | 3,239 | 14th July 2003 - 12:44 AM Last post by: GGOSS |
|||
|
3 | -Ravisankar- | 3,072 | 28th June 2002 - 08:04 AM Last post by: GGOSS |
|||
|
Lo-Fi Version | Time is now: 15th March 2010 - 06:07 AM |
