« previous next »
Pages: [1]   Go Down

Author Topic: Are AC power sources also considered to be isolation transformers?  (Read 916 times)

0 Members and 1 Guest are viewing this topic.

Offline petemateTopic starter

  • Regular Contributor
  • *
  • Posts: 126
Are AC power sources also considered to be isolation transformers?
« on: November 20, 2020, 11:29:13 pm »
Hi, I'm wondering about how AC power sources(Chroma, California instruments, etc) are wired. Are they suitable for use as isolation transformers? Provided you don't pass the ground to the EUT, of course.
Logged
 

Offline bob91343

  • Super Contributor
  • ***
  • Posts: 2675
  • Country: us
Re: Are AC power sources also considered to be isolation transformers?
« Reply #1 on: November 20, 2020, 11:35:56 pm »
I think so.
Logged
 

Offline mikeselectricstuff

  • Super Contributor
  • ***
  • Posts: 13871
  • Country: gb
    • Mike's Electric Stuff
Re: Are AC power sources also considered to be isolation transformers?
« Reply #2 on: November 20, 2020, 11:38:58 pm »
Depends what you mean by "AC Power source". A variac for example does not provide isolation.
Logged
Youtube channel:Taking wierd stuff apart. Very apart.
Mike's Electric Stuff: High voltage, vintage electronics etc.
Day Job: Mostly LEDs
 

Offline petemateTopic starter

  • Regular Contributor
  • *
  • Posts: 126
Re: Are AC power sources also considered to be isolation transformers?
« Reply #3 on: November 21, 2020, 12:59:31 am »
Quote from: mikeselectricstuff on November 20, 2020, 11:38:58 pm
Depends what you mean by "AC Power source". A variac for example does not provide isolation.

I mean those AC power sources manufactured by e.g. Chroma. They spit out whatever frequency and voltage you set it up to. Its basically a large switchmode converter.
Logged
 

Offline james_s

  • Super Contributor
  • ***
  • Posts: 21611
  • Country: us
Re: Are AC power sources also considered to be isolation transformers?
« Reply #4 on: November 21, 2020, 01:43:46 am »
I have a California Instruments Invertron and it is isolated, the unit is essentially a huge audio amplifier driving a power transformer for the output. I don't know about other similar devices but I would expect that they are.
Logged
 
The following users thanked this post: petemate

Offline threephase

  • Regular Contributor
  • *
  • Posts: 205
  • Country: gb
Re: Are AC power sources also considered to be isolation transformers?
« Reply #5 on: November 21, 2020, 10:11:23 pm »
The BK Precision, Omicron and Megger units I have all have isolated outputs.
Logged
 
The following users thanked this post: petemate

Offline David Hess

  • Super Contributor
  • ***
  • Posts: 16969
  • Country: us
  • DavidH
Re: Are AC power sources also considered to be isolation transformers?
« Reply #6 on: November 22, 2020, 04:08:58 pm »
Even if the output does not include transformer isolation, the line connected input side will.
Logged
 
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 


EEVblog Main Site EEVblog on Youtube EEVblog on Twitter EEVblog on Facebook EEVblog on Odysee