Welcome to Control.com, the global online community of automation professionals.
Control.com - Nerds in Control
Member Login
Search
Jump to a Date
Sponsored Communities
Cool stuff
Neat Stuff
Visit our shop for nerds in control lifestyle products.
Thermal Overload
The threads that wouldn't die...
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
Fortune
Abstainer, n.:
A weak person who yields to the temptation of denying himself a
pleasure.
-- Ambrose Bierce, "The Devil's Dictionary"
A weak person who yields to the temptation of denying himself a
pleasure.
-- Ambrose Bierce, "The Devil's Dictionary"
RSS Feed
Use this link to get an RSS feed of the Control.com article flow, for private, non-commercial use only:www.control.com/rss/
To get a personalized feed, become a member at no cost.
from the Electrical department...
Power transformer Test
I was told by my colleague that he saw the testing of 6900/440 volt testing as below. The person gave 440 volt in the primary after shorting the secondary terminals with wires. These wires burnt after the primary is applied. What does this test mean?
In a short circuit test, rated voltage is not applied to primary but only that amount of reduced voltage is applied to the primary, which makes rated current to flow in the secondary.
This test result also means, "Don't ever let that person test a transformer again".
This test result also means, "Don't ever let that person test a transformer again".
From Control Engineering magazine...
Related articles from Control
Engineering magazine
- Budget-friendly temperature control unit
- Upgrading control for better polymer performance
- Software pinpoints process interactions
- BP selects SIS for UK deployment
- Here's what you need to know about controls, says Automation Federation, U.S. government
- Electrical product safety: Are testing labs needed or is a supplier's declaration enough?
- Automation vendors boost biofuels
- Cyber security issues take center stage in 2009
- AIC Series presents new high energy storage chokes
- Decrease arc flash risk with new motor control center option
Above articles copyright 2009 Reed Business Information.
Subject to its Terms of Use.
Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2009 Control Technology Corporation. All rights reserved.
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Patronize our advertisers!