Star Or Delta Motor - Electrician Talk - Professional Electrical Contractors Forum
CLICK HERE AND JOIN OUR COMMUNITY TODAY, IT'S FREE!
Go Back   Electrician Talk - Professional Electrical Contractors Forum > Electrical Forum > General Electrical Discussion


Reply
 
Thread Tools Display Modes
Old 02-27-2015, 09:39 PM   #1
Junior Member
 
Join Date: Feb 2015
Location: Malaysia
Posts: 26
Rewards Points: 52
Default Star Or Delta Motor

Our existing equipment in factory used the following spec of 3 phase motor.
5.5kW
415/S
1430/63 RPM

Now the above "Star" motor was damaged, can we change it to the following spec of 3 phase motor?
5.5kW
415/D
1400/63 RPM

Thanks.
atjm88 is offline   Reply With Quote
Join Contractor Talk

Join the #1 Electrician Forum Today - It's Totally Free!

ElectricianTalk.com - Are you a Professional Electrical Contractor? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's the leading place for electricians to meet online. No homeowners asking DIY questions. Just fellow tradesmen who enjoy talking about their business, their trade, and anything else that comes up. No matter what your specialty is you'll find that ElectricianTalk.com is a great community to join. Best of all it's totally free!

Join ElectricianTalk.com - Click Here JOIN FOR FREE


Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ElectricianTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

Sponsored Links
Advertisement
 
Old 02-27-2015, 10:11 PM   #2
Senior Member
 
Vintage Sounds's Avatar
 
Join Date: Oct 2009
Location: Toronto, ON, Canada
Posts: 3,259
Rewards Points: 4,004
Default

Is this an application where the 30 RPM speed difference is critical?
Vintage Sounds is offline   Reply With Quote
Old 02-27-2015, 10:26 PM   #3
Junior Member
 
Join Date: Feb 2015
Location: Malaysia
Posts: 26
Rewards Points: 52
Default

Quote:
Originally Posted by Vintage Sounds View Post
Is this an application where the 30 RPM speed difference is critical?
It's a gear motor and the output from the gearbox is connected to the chain for the rotating part of the material flowing only.

As by my knowledge, I think we usually see the output speed from the gearbox only right which is 63RPM at the end? As the 1400 and 1430 RPM both are 4 pole, if not mistaken, they should be the same? Please correct if I'm wrong.

Thanks.
atjm88 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-27-2015, 11:10 PM   #4
Senior Member
 
JRaef's Avatar
 
Join Date: Mar 2009
Location: SF Bay Area, California
Posts: 5,227
Rewards Points: 334
Default

Quote:
Originally Posted by atjm88 View Post
It's a gear motor and the output from the gearbox is connected to the chain for the rotating part of the material flowing only.

As by my knowledge, I think we usually see the output speed from the gearbox only right which is 63RPM at the end? As the 1400 and 1430 RPM both are 4 pole, if not mistaken, they should be the same? Please correct if I'm wrong.

Thanks.
They are both 4 pole, but they have different amounts of slip. The 1400RPM will have slightly more torque, but not enough to get excited about. The important part in all of this is that the final speed at the working shaft is still 63RPM, which is what you want. The rest of that is interesting, but totally irrelevant, including the Star vs Delta part of it. There will be a difference in how the connections will be made, different numbers on the wires etc., but just follow the instructions on the new motor, ASSume nothing.
__________________
"If you don't know where you're going, then any direction will do." -- Lewis Carroll
JRaef is online now   Reply With Quote
Reply

Tags
3 phase, delta, motor, star


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Star-delta starting motor parallel feeds dantheman79 General Electrical Discussion 12 09-25-2014 04:02 PM
Star-Delta Motor Starting Polarity. cthom PLCs, VFDs, Motors and Controls 3 09-01-2014 11:51 PM
Star/Delta motor starter troubleshooting Electrorecycler PLCs, VFDs, Motors and Controls 23 05-03-2014 07:47 AM
star/delta motor blow fuses on isolation timetunnel General Electrical Discussion 13 08-12-2013 08:11 PM
Star/delta Motor Fault andyd1970 General Electrical Discussion 6 07-27-2013 07:55 AM


All times are GMT -4. The time now is 09:23 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Our Pro Sites Network
ContractorTalk.com | DrywallTalk.com | HVACSite.com | PaintTalk.com | PlumbingZone.com | RoofingTalk.com