In article ,
Brian O'Connell writes
>Typically, I have always measured/calculated distortion PF using the
>current waveform. What market segments tend to use/prefer the voltage
>w/f ? Do you think that end-users of component power supplies prefer one
>parametric over the other ?
I tried to keep
> -Original Message-
> From: John Woodgate [ mailto:j...@jmwa.demon.co.uk]
> Sent: Saturday, October 16, 2004 2:03 PM
> To: emc-p...@ieee.org
> Subject: Re: Power Factor correction
> Then there is the 'distortion power factor', which is a measure of
In article <9F347458EDACB64B8FF57DB67E6E0FAA0121E14D@cerebrum.spraycool.
com>, Gary McInturff writes
> We have a new project that is, for all practical purposes a custom
>design for a client.
>We purchase a supply that indicates compliance with EN61000-3-2
>harmonics. Our cus
[ mailto:m...@california.com]
Sent: Monday, October 11, 2004 4:16 PM
To: Gary McInturff; emc-p...@ieee.org
Subject: Re: Power Factor correction
Gary,
Is it possible to calculate the pfc from the spec?
- Robert -
On Mon, 11 Oct 2004 10:54:01 -0700
Gary McInturff wrote:
> Ladies
Gary,
Is it possible to calculate the pfc from the spec?
- Robert -
On Mon, 11 Oct 2004 10:54:01 -0700
Gary McInturff wrote:
> Ladies and Gentlemen
> I think I may be stuck between a rock and a hard
> place.
> We have a new project that is, for all practical
> purposes a custom
Conflict of Interest Notice: My employer makes component power supplies.
PFC data should be available. It should be an important part of the vendor's
DVT.
Component power supply PF can be affected by many variations in the input
power quality, output load(s), and input voltage. In any case, the
I read in !emc-pstc that Dave Spencer wrote (in
<185530-22003324161424...@dsl-only.net>) about 'Power Factor Correction'
on Tue, 4 Mar 2003:
>I am looking for some input on your experience with PFC as it relates
>to testing (EN61000-3-2 and EN55022). Has anyone using an AC-AC
>external transform
I read in !emc-pstc that am...@westin-emission.no wrote (in ) about 'Power Factor
Correction - Power supply unit', on Thu, 31 Jan 2002:
>
>Hi all,
>
>An AC/DC power supply (230AC in / 28VDC 3A out) shall power an ITE (fire
>alarm panel). I assume that EN61000-3-2 will apply for the total system
>(
Standards are published in the OJ for use with a particular directive.
In this case EN 61000-3-2 and EN 61000-3-3 have been published in the OJ
as standards used to conform to the EMC directive. If you choose to meet
the Medical Devices Directive (Watch out that you are within it's
scope!) no
Although you are correct - neither does the EMC Directive. BUT the EN for
harmonics IS in the OJ and it would seem to me to be applicable. Any one else
agree??
The Medical Devices Directive does not have any specific
requirements for Power Factor Correction. The EMC standard for
medical equipment, EN60601-1-2, does not call out any limitations on
harmonics, a related issue.
Jon Griver
i...@shani.net
The "power factor correction" standard is IEC 1000-3-2 (aka
EN 61000-3-2).
This standard applies to ALL electrical and electronic products
exceeding 75 watts maximum rated power.
The EN standard applies to all countries of the European
Community (most of Western Europe).
EN 61000-3-2 falls und
12 matches
Mail list logo
