The Electrical Contractor Network

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

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Massive power outage South Australia
by Meadow
09/29/16 06:46 AM
short circuit??
by Meadow
09/29/16 06:43 AM
Norwegian power?
by Meadow
09/29/16 06:36 AM
breaker meltdown
by sparky
09/27/16 07:30 PM
230 or 345 kV transmission lines?
by Vlado
09/24/16 09:33 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
HotLine1 13
sparky 10
gfretwell 8
sparky66wv 8
Vlado 6
Who's Online
0 registered (), 98 Guests and 3 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#207456 - 10/30/12 01:00 PM Looking for a good portable power supply
sparkyinak Offline
Member

Registered: 07/08/07
Posts: 1286
Loc: Alaska
I am in the market for a good manufacter or power supply thats portable for calibrating meters in the field, bench testing equipment, circuits and such. Any suggestions?
_________________________
"Live Awesome!" - Kevin Carosa

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#207461 - 10/30/12 02:42 PM Re: Looking for a good portable power supply [Re: sparkyinak]
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9012
Loc: Estero,Fl,usa
How accurate do you need it? What voltages and current?

I have a 450w PC power supply on my bench for doing some of these things.
You get +12, +3.3 and +5 VDC at pretty good amps. the -12 and -5 don't have much oomph.


I wouldn't trust it to calibrate a meter tho. If you really want a meter to be right, you need to send it to a lab.
_________________________
Greg Fretwell

Top
#207495 - 10/31/12 08:31 PM Re: Looking for a good portable power supply [Re: sparkyinak]
NJwirenut Offline
Member

Registered: 09/15/01
Posts: 816
Loc: Bergen County, NJ
If you are calibrating meters, what you want is a "voltage standard", not a power supply. I use one of these on my test bench at work:

http://www.ebay.com/itm/EDC-Model-MV116-...=item3f1e20bfd8

Top
#207498 - 11/01/12 05:09 PM Re: Looking for a good portable power supply [Re: NJwirenut]
sparkyinak Offline
Member

Registered: 07/08/07
Posts: 1286
Loc: Alaska
Unfortunetly my employer don't buy used equipment
_________________________
"Live Awesome!" - Kevin Carosa

Top
#207499 - 11/01/12 05:11 PM Re: Looking for a good portable power supply [Re: gfretwell]
sparkyinak Offline
Member

Registered: 07/08/07
Posts: 1286
Loc: Alaska
Since i'll be calibrating meters, it has to be accurate
_________________________
"Live Awesome!" - Kevin Carosa

Top
#207500 - 11/01/12 07:23 PM Re: Looking for a good portable power supply [Re: sparkyinak]
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9012
Loc: Estero,Fl,usa
If you are buying a brand new voltage standard, you may be spending enough money to make that lab I was talking about look attractive. How many meters are you going to be maintaining?
IBM did in house calibration but they had about 10,000 pieces of equipment to keep ISO 9000 compliant.

You also need to calibrate the standard every so often too (I am not really sure what that I9k criteria is these days)
_________________________
Greg Fretwell

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals