 |
IET |
 |
 |  |
|
Topic Title: How to derive three phase current for an isolation transformer Topic Summary: Created On: 22 March 2013 07:31 PM Status: Post and Reply |
Linear : Threading : Single : Branch |
 Search Topic |
Topic Tools
|
 22 March 2013 07:31 PM
|
|
|
Hi,
I wonder if any one can cast a light on which method should be used when calculating the required kva for a transformer. There are two school of thoughts: 1 - Use the highest phase current to determine the kVA 2 - Use the Average current of the three phases to deduce the kVA With the ever increasing cost of copper and decreasing amount of money being spent on asset option two is appealing, but does it meet regulatory requirements??? - Please help |
|
|
|
|
|
22 March 2013 10:50 PM
|
|
|
For a three phase transformer, use the highest phase current to calculate kVA for the most heavily loaded winding, then multiply this value by three. Finally, choose the next kVA size higher (as I doubt you are getting a device specially wound).
Regards, Alan. |
|
|
|
|
See Also:
|
|
| Technical discussion forums |
|
| · | Wiring and the regulations |
| · | Built environment |
| · | Design and production engineering |
| · | Control and automation |
| · | Communications engineering |
| · | Information technology |
| · | Energy |
| · | Transport engineering |
| · | Airfield engineering |
| · | Electronic engineering |
| · | Management in engineering |
| · | Consumer technology |
| · | Other and general engineering discussions |
| Professional and career discussion forums |
|
| · | Feedback and questions |
| · | CEng, IEng, EngTech and other professional registration matters |
| · | Savoy Place Virtual Club |
| · | Student and apprentice discussion forum |
| · | Young Professionals Community |
| Archived categories |
FuseTalk Standard Edition v3.2 - © 1999-2013 FuseTalk Inc. All rights reserved.
