ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat
Top Posters(30 Days)
Admin 16
Recent Posts
fuse rejectors
by gfretwell. 03/23/17 01:12 PM
Another Forum Update
by Admin. 03/22/17 03:04 PM
Dining room plugs
by watersparkfalls. 03/21/17 10:31 PM
TRUE POWER
by jraef. 03/21/17 09:13 PM
WEG CFW-11 Frequency Inverter
by jraef. 03/21/17 08:50 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,239 Are you busy
165,949 Re: Forum
160,476 Need opinion
Who's Online Now
1 registered members (TheShockDoctors), 89 guests, and 16 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#134983 - 12/15/02 01:20 AM Electronics?  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,211
SI,New Zealand
How much is Electronics, encroaching on your
normal work?.
We now have High Frequency Ballasts, Soft-Starters, Electronic Y-D Starters and Micro-
Drive Motor controllers.
How do you feel about these new technologies?.


Let's face it, these days if you're not young, you're old - Red Green grin

Test Equipment:
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement

#134984 - 12/15/02 08:38 AM Re: Electronics?  
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
No problem for me, but as you know a large part of my work is electronics anyway.

My only real criticism is that sometimes it seems as though manufacturers are installing complex circuitry just for the sake of it. It doesn't take a Kray-supercomputer to run a toaster!


#134985 - 12/15/02 01:54 PM Re: Electronics?  
lyledunn  Offline
Member
Joined: Jun 2002
Posts: 159
N.Ireland
As an inspection engineer the widespread use of electronic equipment in buildings has certainly moulded the way I carry out even the most simple testing procedures. For example, insulation resistance tests on existing installations are almost impossible. Not only could electronic equipment be damaged by the test voltage but most switch mode power supply units will have filtering equipment connected to earth.
The harmonics produced by such equipment will also affect the way I might determine appropriately sized neutrals in 3phase and neutral systems. Careful consideration also needs to be given to high protective conductor currents which are a direct result of the normal function of certain electronic equipment in buildings.
The enormous changes brought about by electronic advances in the electro-technical sector is what makes this industry dynamic, exiting and, of course, well worth while being part of!


regards

lyle dunn

#134986 - 12/16/02 01:10 AM Re: Electronics?  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,211
SI,New Zealand
Lyle,
Welcome to ECN, nice to have someone from Ireland in the ECN group.
I certainly agree with your comments on Electronics, making Insulation Resistance testing more difficult, even a simple light dimmer in a house, can add an extra 10 minutes,to a job, through having to bridge it out.
Another thing that concerns me about using Electronics, is that it requires extra protection against voltage variations and spikes, whereas standard electrical gear does not require this.


Let's face it, these days if you're not young, you're old - Red Green grin

#134987 - 12/21/02 12:55 AM Re: Electronics?  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,211
SI,New Zealand
I have concerns, about Designers of Electrical installations, especially as far as Industrial Controls go.
Recently, I was asked to install an automatic inking system at the local meat works, for all of their Inedible waste.
I figured that it could all have been done with 2 timers and a Contactor, but no,
what turns up, from this guy is a PLC, a multitude of sensors, limit switches and a whole host of Em/Stop stations.
It's OK, if you don't have to install all of this, but the real crunch came when the PLC was faulty, and then later on the program had a few "glitches" in it.
All I thought, was why put our client through all of this, it took ages to fix it all up, WHY!.
2 timers and a Contactor. [Linked Image]


Let's face it, these days if you're not young, you're old - Red Green grin


Member Spotlight
lil suzi
lil suzi
Midwest
Posts: 57
Joined: August 2003
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.013s Queries: 14 (0.003s) Memory: 0.7679 MB (Peak: 0.9083 MB) Zlib enabled. Server Time: 2017-03-23 18:09:29 UTC