ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
New fan motor for Panasonic
by HotLine1. 06/25/19 03:53 PM
Burning out of return(white) side of 120volt rec
by crselectric. 06/14/19 02:15 AM
Video door bell causing chime activation of coil
by JoeTestingEngr. 06/13/19 12:43 PM
Troubleshooting Voltage Drop Across Relay
by gfretwell. 06/09/19 11:49 AM
Apple Recalls Three-Prong Wall Plug Adapters
by Admin. 06/05/19 09:06 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 9 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Converters #170147
10/28/07 07:31 AM
10/28/07 07:31 AM
L
lyledunn  Offline OP
Member
Joined: Jun 2002
Posts: 159
N.Ireland
A single phase to three phase rotary-type converter installed on a farm to drive a compressor has assymetric voltages to earth on the load side. I understand that this is a feature of such devices. The displacement between phases remains at 120degrees. Can any one tell me why an equal phase to earth voltage cannot be easily achieved?


regards

lyle dunn
Test Equipment:
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement
Re: Converters [Re: lyledunn] #170174
10/29/07 07:47 AM
10/29/07 07:47 AM
T
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,451
Vienna, Austria
*headscratch*
What kind of difference are we talking about? A few volts or something like the US corner grounded delta where some phases have 120V to ground an others 240?
The latter could only be accounted to the arrangement of the windings and remedied by rewiring the converter to run in a Y setup.


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
noderaser
noderaser
Portland, Oregon, United States
Posts: 404
Joined: March 2007
Show All Member Profiles 
Top Posters(30 Days)
Khombo 2
Popular Topics(Views)
255,882 Are you busy
191,857 Re: Forum
181,620 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.019s Queries: 15 (0.004s) Memory: 0.9421 MB (Peak: 1.0599 MB) Zlib enabled. Server Time: 2019-06-26 18:42:18 UTC