Pete Perkins wrote (in
<000801c551a2$7fc843f0$0400a8c0@Pete97219Compaq>) about 'Instruments and
UL101/IEC 60065 Leakage Current measurements - hi speed', on Thu, 5 May
2005:
>In the context of IEC 60990, hi-speed means circuits that will work
>up to 1 MHz - as desc
John, et al,
In the context of IEC 60990, hi-speed means circuits that will work
up to 1 MHz - as described in the frequency response curves.
:>) br, Pete
Peter E Perkins, PE
Principle Product Safety Engineer
PO Box 23427
Tigard, ORe 97281-3427
503/452-1201 fone/fax
p.perk...@ieee.or
Pete Perkins wrote (in
<004a01c54f48$33aa3700$0400a8c0@Pete97219Compaq>) about 'Instruments and
UL101/IEC 60065 Leakage Current measurements', on Mon, 2 May 2005:
> Yes, it is straightforward to build the circuits described in the
>standard, but not so trivial
Brian, et al,
Perhaps you would be willing to share some of your DSoscillograms -
albeit privately, since the IEEE server strips away attachments. (or some
other clever scheme to get them thru).
Regarding the construction of the IEC 60990 TC circuits. Yes, it is
straightforward to bui
2000 3:44 PM
Subject: Leakage Current Measurements
>
> I found something interesting today. While measuring leakage current with
a
> digital multimeter, I noticed a high amount of leakage. The unit
> incorporates a switching power supply, with some EMI/EMC circuitry.
Anyhow,
> I read
If anyone is curious, I have a graph of the frequency response of Annex D using
an excel spreadsheet. Contact me off-line.
Regards,
David.
David Gelfand
Regulatory Approvals
Memotec Communications Inc.
Montreal Canada
---
This message is from the IEEE
ot;Matsuda, Ken"
cc:
Sent by: Subject: Leakage Current
Measurements
.org
List-Post: emc-pstc@listserv.ieee.org
Date: Tuesday, October 03, 2000 3:04 PM
Subject: Re: Leakage Current Measurements
>
>
>
>
>Hi Ken:
>
>
>> I found something interesting today. While measuring leakage current
with a
>> digital multimeter, I
Rich Nute
cc: emc-p...@majordomo.ieee.org
Sent by: Subject: Re: Leakage Current
Hi Ken:
> I found something interesting today. While measuring leakage current with a
> digital multimeter, I noticed a high amount of leakage. The unit
> incorporates a switching power supply, with some EMI/EMC circuitry. Anyhow,
> I read somewhere that DMMs are some times inaccur
ordomo.ieee.org
Subject: Leakage Current Measurements
I found something interesting today. While measuring leakage current with a
digital multimeter, I noticed a high amount of leakage. The unit
incorporates a switching power supply, with some EMI/EMC circuitry. Anyhow,
I read somewhere that DMMs
I found something interesting today. While measuring leakage current with a
digital multimeter, I noticed a high amount of leakage. The unit
incorporates a switching power supply, with some EMI/EMC circuitry. Anyhow,
I read somewhere that DMMs are some times inaccurate with high frequency
line
sday, March 17, 1999 5:00 PM
To: emc-p...@ieee.org
Subject: RE: Leakage Current Measurements
Interesting. During an audit of the facilities of a former employer, the
auditor specifically requested that we didn't use the Simpson 228 for
EN60950 because of the roll-off of the analog movemen
Hi Frank:
> Interesting. During an audit of the facilities of a former employer, the
> auditor specifically requested that we didn't use the Simpson 228 for
> EN60950 because of the roll-off of the analog movement above 100Hz. The
> suggested fix was to build the network as descri
m
www.advanced-energy.com
==
-Original Message-
From: pe...@itl.co.il [mailto:pe...@itl.co.il]
Sent: Thursday, March 11, 1999 3:28 PM
To: emc-p...@ieee.org
Subject: Leakage Current Measurements
Dear All Safety Engineers/Technicians,
I would like to make a survey of what test equipment (mult
To: emc-p...@ieee.org
Subject: Leakage Current Measurements
Dear All Safety Engineers/Technicians,
I would like to make a survey of what test equipment (multimeter,
scope, etc.) you or your friendly test house use to measure the
voltage during the leakage current measurements in UL1950/EN 60
95
> A meter for IEC 60950 may not be adequate for IEC 61010,
> especially if the unit under test has a reasonably high
> frequency switch mode power supply.
The high frequencies generated in a switching mode power supply
are negligible in the presence of the mains-frequency leakage
cur
is
www.ergonomicsusa.com.
Daniel Mis
-Original Message-
From: me...@aol.com [mailto:me...@aol.com]
Sent: Monday, March 15, 1999 7:37 AM
To: ri...@sdd.hp.com; jo...@exchange.scotland.ncr.com
Cc: pe...@itl.co.il; emc-p...@ieee.org
Subject: Re: Leakage Current Measurements
ED&D Inc.
: pe...@itl.co.il, emc-p...@ieee.org
Subject: RE: Leakage Current Measurements
Date sent: Mon, 15 Mar 1999 11:50:33 -0500
Send reply to: "Russell, Ray"
> Greetings,
>
> I have used the ED&D leakage current for my previous 2 emp
.org
Subject: Re: Leakage Current Measurements
ED&D Inc. also offers several Leakage Current Meters specific to different
Standards. They are located in Morrisville NC 919-469-9434
Ed
-
This message is coming from the emc-pstc discussion list.
To cancel your subscription, send mail t
ED&D Inc. also offers several Leakage Current Meters specific to different
Standards. They are located in Morrisville NC 919-469-9434
Ed
-
This message is coming from the emc-pstc discussion list.
To cancel your subscription, send mail to majord...@ieee.org
with the single line: "unsubscr
2 Mar 1999 04:38:08 -0500 (EST)
> Message-ID: <286215c2ca1ad211a13500a024535b58424...@eukscpo3.dundee.ncr.com>
> From: "Crabb, John"
> To: "'pe...@itl.co.il'" , emc-p...@ieee.org
> Subject: RE: Leakage Current Measurements
> Date: Fri, 12
uerian
> To: emc-p...@ieee.org
> Subject: Leakage Current Measurements
> Date: Thursday, March 11, 1999 2:28 PM
>
> Dear All Safety Engineers/Technicians,
>
> I would like to make a survey of what test equipment (multimeter,
> scope, etc.) you or your friendly test house
to the equipment, and had pluggable networks for 950 and medical
equipment measurements.
>From time to time when I am doing leakage current measurements,
I check that the results I get ARE VERY SIMILAR to the reading I
get if I just put the meter in series with the ground conductor of the
product.
Peter,
We use Simpson model 229-2 even for UL1950 3rd edition and a UL engineer
told us that would be fine. However UL themself use model 228 for 3rd
edition and 229-2 for 2nd edition. We also use the in-house kit that has
been built in accordance with Annex D/G for production line. This is as
goo
Dear All Safety Engineers/Technicians,
I would like to make a survey of what test equipment (multimeter,
scope, etc.) you or your friendly test house use to measure the
voltage during the leakage current measurements in UL1950/EN 60
950.
WE USE:
OUR THIRD PARTY TEST HOUSE USES:
PETER S
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