Re: Unity Power Factor

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Re: Circuit Breaker Tripping Dring Fault Tests

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Re: Unity Power Factor

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Listserver Administrative Notice

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jurisdiction, overlap, and delegation in USA rules.

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Re: NRTL in the U.S.

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Re: NRTL in the U.S.

Hi Gary: > Rich Nute (I think) wrote and excellent article or e-mail on this not > too long ago and should be in the archives. Its pretty concise and clear but goes into some pretty good specifics and the state laws and how they very and you will find it very helpful. Unfortu

Re: NRTL in the U.S.

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Re: NRTL in the U.S.

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Re: Alternatives to Brominated Fire Retardants

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Re: strange symbols (to me anyway)

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Re: strange symbols (to me anyway)

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Re: strange symbols (to me anyway)

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comment worth a further look

Hi Luke: > This won't work. If you want to look at how badly online forums work, look at the IEE website. Unfortunately, this requires a membership and a login. I really would like to know more about the success of web-based forums. Best regards, Rich

The listserver WILL continue.

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Re: Death of the listserver

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Re: product safety audit scenario

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Re: Measuring Power Supply Output Current

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Re: product safety audit scenario

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Re: North American Production-Line Tests; ANSI or Other

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Re: North American Production-Line Tests; ANSI or Other

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Defamation

A message was posted that defamed another subscriber. That subscriber has been un-subscribed and notified as to the reason. Richard Nute Administrator, IEEE emc-pstc listserver This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list

Violation of IEEE emc-pstc advertising rule

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Re: EN60950 protective conductor test (was Re: Circuit Breaker Tripping Dring Fault Tests)

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Re: Unity power factor

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Re: EN60950 protective conductor test (was Re: Circuit Breaker Tripping Dring Fault Tests)

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Re: EN60950 protective conductor test (was Re: Circuit Breaker Tripping Dring Fault Tests)

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Re: EN60950 protective conductor test

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Administrative message: allegations of non-compliance

problem for which there are several solutions, fix the product, fix the standard, or fix the measurement. In arriving at a solution, please don't denigrate a colleague or a manufacturer (or anyone else, for that matter!). If you want to discuss this matter further, please do so off-line.

Re: Surface Temperature Limits

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Re: DERIVATION OF CREEPAGE AND CLEARANCES

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Re: Symbols vs. text - was EN61010-1, Symbol 14 - validation

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Re: Symbols vs. text - was EN61010-1, Symbol 14

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Re: Symbols vs. text - was EN61010-1, Symbol 14

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Re: Symbols vs. text - was EN61010-1, Symbol 14

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Re: EN61010-1, Symbol 14

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Re: EN61010-1, Symbol 14

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Re: Non-Compliant Products

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Re: Non-Compliant Products

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Re: Bad Fuse vs. Good Fuse

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Re: Safety testing after equipment repair

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Re: Safety testing after equipment repair

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Re: Safety testing after equipment repair

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Re: Safety testing after equipment repair

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Re: Altitude specifications

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Re: Safety testing after equipment repair

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Re: Glow Wire test vs. UL94 - flammability rating

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Re: reinforced insulation - EN60950

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Listserver delays -- Re: reinforced insulation - EN60950

normally.) Please bear with us while we solve the problem. If you have further questions or comments, please send them directly to me or any of the administrators at the bottom of this message. Best regards, Rich Richard Nute IEEE emc-pstc Listserver Administrator ri...@ieee.org This

Re: The transformer screen/shield conundrum

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Re: The transformer screen/shield conundrum

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Decorum -- re-post from November, 2001

and directly with me and the other administrators. Best regards, Rich Richard Nute IEEE emc-pstc Administrator c/o Hewlett-Packard Company San Diego Tel: 1-858-655-3329 e-mail: ri...@ieee.org This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion

Re: The transformer screen/shield conundrum

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Re: CE without LVD?

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The transformer screen/shield conundrum

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Re: CE without LVD?

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Re: PCB marked for UL 94V-0

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Re: The transformer screen/shield conundrum

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Re: NARTE safety engineer certification

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Re: Hi-Pot testing

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Re: fuse replacement markings

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Re: 94V-0 question

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Re: FW: Y caps

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Re: Impulse for Hi-Pot

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Re: Hi-Pot testing

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Turkish Tabloid -- Spiegel -- Sober -- a brief explanation

rules. If you have any further questions or comments, please contact me off-line. With best regards, Richard Nute Co-Administrator, IEEE PSES emc-pstc Listserver c/o Hewlett-Packard Company San Diego

Further comments on the harmonic current standard.

Best regards, Rich ----- Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group San Diego Division (SDD) Tel : 619 655 3329 16399 West Bernardo Drive FAX : 619 655 4979 San Die

Penalty for Non-Compliance

this (sometimes through the use of crisis management!) without delaying product to market. Best regards, Rich ----- Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group S

Re: Flammability of Plastics for ITE

Hi Darrell: 1. Do overlays outside the 94HB enclosure material need a flame rating? The answer depends on which certification house you are submitting your product to. According to the standard, the overlay would be considered a "decorative part." A decorative part is d

Safety in Turkey, Israel, South Africa.

best regards, Rich - Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group San Diego Division (SDD) Tel : 619 655 3329 16399 West Bernardo

Identify standards?

- Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group San Diego Division (SDD) Tel : 619 655 3329 16399 West Bernardo Drive FAX : 619 655 4979 San Diego

EN 61000-3-2 status update.

. Unless... well you can see the proposal in the attached message. As before, I have deleted names. Best regards, Rich - Richard Nute Quality Department Hewlett-Packard Company Product Regulations

Re: Jurisdiction over Electrical Equipment in a Sewer

at the following URL: http://www.osha-slc.gov/OshStd_toc/OSHA_Std_toc_1910_subpart_S.html Best regards, Rich ----- Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group

San Diego area subscribers?

all of those on the list. I will include a survey to see if there is any interest in activating a group and collect suggestions for success. Thanks for your help. Rich ----- Richard Nute Quality Department

Tetanization and fibrillation (was GFI history)

several humans, hand-to-hand, at 10 kHz, to light a light bulb! Best regards, Rich ----- Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group San Diego Division

Values for "hazardous" currents.

ut, being "frozen" is scary. Injury doesn't occur until the onset of fibrillation, about 50 mA hand-to-hand. Best regards, Rich - Richard Nute Quality Department Hewlett-Packard Company

Re: Harmonic current measurement and input power

Hi Pat: Your message said that you have a switching-mode power supply in parallel with a resistive load. The resistive load has a 5-minute on and off cycle. When the resistive load is on, the product complies with the harmonic current limit requirements. When the resistive load is off, the

Re: Notifed Bodies and Test Samples

Ask them why they are requesting this of you, and ask them for other means for accomplishing their objective. They may accept photos or videotape. Best regards from sunny San Diego, Rich - Richard Nute Quality Depa

Re: Transformer Approvals

compliance with IEC 1010. Best regards, Rich - Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group San Diego Division (SDD) Tel : 619 655 3329

Re: Input power connections with removable cord set.

the cord. Best regards from San Diego, Rich - Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group San Diego Division (SDD) Tel : 619 655 3329

Re: Replacement Labels?

? If the certification houses were really concerned about this issue, they would have published rules for this a long time ago. What's the best answer? Do what makes sense for your business! Best regards, Rich - Ri

Re: IEC 22G/21/CDV(11-1995)

you contact your country delegate to SC 22G to get a copy or determine status. I've attached the contents of the IEC web pages for SC 22G. Best regards, Richard Nute >From the IEC World Wide Web pages: IEC SubCommittee 22G: SEMICONDUCTOR POWER CONVERTERS FOR ADJUSTABLE SPEED ELECTR

Re: UL Marks and Repair of

to take place), and the consequences of violating the regulation. The letter also offers the services of the City's own testing laboratory and labelling service. Best regards, Rich - Richard Nute Qua

Re: LEDs and IEC 825-1/EN60825-1

Hi Bob: You said: > To eliminate the need for classification or testing of products containing > low > power LEDs, when LEDs were added to the standard the Scope of the document > was > revised to state: > > "Any laser product or LED product is exempt from all further > requireme

Re: Corona

ink you would find it a useful tool for finding corona. Best regards, Richard Nute Hewlett-Packard Company San Diego

Re: IEC320 and Double insulation

Hi Hans: The IEC 950/EN 60950 definition for a Class I product is: "Equipment where protection against electric shock is achieved by: a) using BASIC INSULATION, and also b) providing a means for connecting to the protective earthing conductor in the building wi

Re: IEC320 and Double insulation

Received: from mike-elliott (line10.cs9.electriciti.com [198.5.214.20]) > by powergrid.electriciti.com (8.8.5/8.8.5) with ESMTP id WAA10022; > Mon, 21 Apr 1997 22:37:30 -0700 (PDT) > Message-Id: <199704220537.waa10...@powergrid.electriciti.com> > From: "Mike Ell

Re: IEC320 and Double insulation

Hello from San Diego: > I saw a product once that was double-insulated, and they removed the > ground pin from the _IEC320_receptacle_ (on the equipment). You could > use any power cord, regardless of whether it had a ground wire. > Very strange looking. The product manufacturer DID N

Re: Fire Enclosures

Hello from San Diego: Richard Woods has done a very good analysis of the fire enclosure requirements of IEC 950. He finds: 1. For all circuits, there are limits on the sizes and locations of bottom openings and limits for the bottom material itself. 2. For low-voltage circuits,

Re: Flammability of Plastics for ITE - more feedback

Hi Chris: "What if the overlay is a membrane key pad or has embedded LEDs?" Depends on whether the circuits for the keys or LEDs are "Limited Power" as defined in IEC 950, Sub-clause 2.11. The issue is: What parts and circuits require a fire enclosure? The answer to this question is found in

Re: Surge Suppressors

n the chassis just as with the capacitors. I submit that: 1) There is no electric shock injury hazard from a surge, but there may be a burn hazard. 2) If the unit incorporates surge suppressors and is not grounded, the hazard is no worse than without the surge suppressors. Best r

Re: Surge Suppressors

Hi Richard: You commented that the major reason a surge suppressor is not allowed from line to earth is because the surge suppressor is prone to shorting. Let us assume that the surge suppressor only fails when a voltage is impressed across it. For a voltage to appear across the surge supp

Re: Question on generic IEC test conditions

influenced by temperature, pressure, or humidity. In my opinion, it would be far better to specify the environmental requirements for each test rather than for all tests. Best regards, Rich - Richard Nute

Re: Surge Suppressors

Hi Richard: You suggest that Y capacitors are "fail-safe," and self-healing. Its not quite that simple. Y capacitors can fail short, but not permanently. Y capacitors are not required to be self-healing. There are four Y capacitors (from IEC 384-14:1993): Y1 Double or reinforced in

Re: IEC 950 Amd 4 & EN60950 Amd 4

Hi Ron: IEC 950 Amendment 4 is a stand-alone document, fully integrated with IEC 950. Yes, it is "separate" from IEC 950, because IEC 950 only exists as IEC 950, with no amendments. Here's the deal the way I understand it: IEC 950, Second Edition ... 1991 Am

Re: EN61000-3-2 - RUMOURS

> > Have anyone got any news regarding the mandatory date for harmonics > requirement in Europe? > I heard 2 stories, one says 1.1.2001 and the other says 1.1.98, which of > those are true? > Any comments please! > > Best Regards > > Vi Van > EMC engineer > Mitsubishi PC

Re: PC card safety standards

Hi Chris: In answer to your questions about a PWB board for user-installation in a personal computer (PC): > 1) Is it a given that all PCs meet UL1950 or IEC 950 directly or > indirectly? PCs marked with any of the safety certification house certification marks comply with an IEC 950 c

Re: PC card safety standards

advantage of flame-retardant materials is that they extinguish after the heat source is removed.) The purpose of the fuse is to prevent overheating. Best regards, Rich - Richard Nute Quality Department

Re: gfc's and vacuum cleaners

ards, Rich - Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group San Diego Division (SDD) Tel : 619 655 3329 16399 West Bernardo Drive FAX : 619 655 4979

Re: EN61000-3-2

Phone: 011 32 2 5 19 68 71 Fax: 011 32 2 5 19 68 19 Best regards, Rich - Richard Nute Quality Department Hewlett-Packard Company Product Regulations Group San Diego Division (SDD)

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