Low Voltage directive and IEC1010
Does anyone have a suggestion on the quickest way to meet the Low Voltage directive and ramp quickly up on the IEC1010? Is going to the approval agency the best way the first time around or a seminar instead? I need to meet the requirements of the low voltage directive and one way is the IEC1010 route and versions thereof. Anybody have other suggestions? Best Regards, Gary Labadie Marketing Acromag, Inc. 30765 Wixom Rd.Ph: (248)624-1541 ext. 205 P.O. Box 437 Fax:(248)624-9234 Wixom, MI 48393Email: glaba...@acromag.com
Re: CCFL Inverter Board
-- Forwarded by Kendall Wilcox/Orch/SJ/FCPA/Fujitsu on 06/09/98 01:54 PM --- Kendall Wilcox 06/09/98 01:53 PM To: McIntosh, Robert rmcint...@kronos.com cc: Subject: Re: CCFL Inverter Board (Document link not converted) Bob, From your description, I am understanding that you want to know what the insulation requirements are between an SELV circuit and the high voltage secondary circuit that it supplies. I think only operational insulation is needed. Anyone disagree ? Best Regards, Kendall Wilcox Fujitsu Computer Products of America
Ceramic spacer
Hello All, I am looking to purchase some ceramic spacers. I have found a few sources that offer Nylon version but not ceramic type. Can anyone direct me to a source that sell these please? Thank you H.Ahmadi Cortech Systems Simi Valley, CA
FW: What is Class 1, Div. 1 Group D?
Jim: If you have to ask, chances are your products are not compliant, much less approved. A source for information is a safety approval agency such as UL, Factory Mutual, or CSA. Call them or check their web sites for free information. In short, Class I (roman numeral I) is an area where flammable gases, vapors, or liquids may be present. Division 1 is where ignitable concentrations of flammable gases, vapors, or liquids can exist all of the time or some of the time under normal operating conditions. Group D tells you that the gas in question is propane. To be compliant, a product must be designed, and tested by an approved agency to demonstrate that sparks, or excessive operating temperatures which could cause ignition of the gas, do not exist, and cannot exist even with a fault. Hope this helps. I suggest you tell the customer NO. Jacob Z. Schanker, P.E. Director of Agency Compliance California Microwave 716 242 8454 (voice) 716 242 8427 (fax) j.schan...@mdsroc.com --- -- From: bach...@ccmail.mmsday.com[SMTP:bach...@ccmail.mmsday.com] Sent: Tuesday, June 09, 1998 8:14 AM To:emc-p...@majordomo.ieee.org Subject: What is Class 1, Div. 1 Group D? Yesterday we had a customer call asking if our products were Class 1, Div. 1, Group D compliant. Can anyone tell me where I can get information on what it is and what it takes to meet it? Jim Bacher Paxar-Monarch bach...@monarch.com
CCFL Inverter Board
We are in the process of designing a wall mount terminal that mounts on a docking station. It uses a 2 wire class 2 supply. My question has to do with the DC to AC inverter that is used to power the LCD. The input power is 5 Vdc @ .7 Adc, the output voltage is 1100 Vrms @ 5.4 marms and the operating frequency is 32 to 42 KHz. My question is since this has high series internal impedance it is responsible for a constant current. because of this the circuit produces its nominal output current under almost any load, from high impedance to a dead short. Since this output is an ac constant current source the output will supply its nominal output current into a shout circuit. This circuit satisfies the definition of Limited Current Circuits in 1950 .In a single fault condition the current measured is 6.6 ma @33KHz under the 23.8 ma allowable at this frequency. None of this is operator accessible with power on. My questions are; Is reinforced insulation required on the output section? Or because it falls under the Limited Current Circuits basic insulation is required. I don't know the rationale behind this section of the standard but it seems it is not exactly a safe circuit. Thanks in advance Bob McIntosh Kronos Inc
ICNIRP Exposure Limits
This information is for those of you who's business will be adversely affected by the 1997 ICNIRP recommendations for human exposure to electromagnetic fields. DG5 of the European Commission has drafted a European Recommendation that the member states adopt the ICNIRP public limits. In effect they are saying that CENELEC will not set exposure limits and the states should not use ENV 50166-1 and -2. Note that this is a recommendation and not a Directive. The states are free to do what they want which may lead to many conflicting regulations. The document is expected to be voted upon in about six months. Germany, via the DKE, is already moving to adopt the recommendation. While there are concerns that the limits are being reduced below the CENELEC limits, the largest concern by some is that there are no short term exposure limits at the lower frequencies. The failure of ICNIRP to provide short term limits will greatly affect many industries and products. DG5 will address this lack of short term limits by ammending the recommendation to say that the member states should take short term exposures into consideration. However, DG5 will not provide guidance on relaxation of the limits for short term exposure, so the member states will be left without any guidance whatsoever. ICNIRP plans to address the many questions that they have received, including concerns about short term limits, in a letter of clarification to be published in Health Physics in August. However, it is understood that they do not plan to add short term limits at this time. I strongly recommend that you quickly address your comments and concerns in writing to the ICNIRP secretary, Mr. Roger Matthes, Budesmat fur Strahlenschutz, Instute fur Strahlenhygiene, Ingolsthadter Landstrasse 1, D-85764 Neuherberg. Tel: +49 89 31603 288; fax: +49 89 31603 289. Email: matt...@bfs.de. I understand that Mr. Matthes speaks excellent English. Richard Woods Sensormatic Electronics wo...@sensormatic.com Views expressed by the author do not necessarily represent those of Sensormatic.
FW: Need European Rep.
Try contacting: Technology International (Europe) Limited 41 Shrivenham Hundred Business Park Shrivenham, Swindon SN6 8TZ England Tel: 44 1793 783137 Fax: 44 1793 782310 Martin Green is the Managing Director. They have an associated company which acts as a front European entity for CE mark Declarations and files. Jacob Z. Schanker, P.E. Director of Agency Compliance California Microwave 716 242 8454 (voice) 716 242 8427 (fax) j.schan...@mdsroc.com --- -- From: Gary Labadie[SMTP:glaba...@acromag.com] Sent: Monday, June 08, 1998 6:10 PM To:emc-p...@ieee.org Subject: Need European Rep. I have a product that is CE marked. It is designed exclusively for an OEM to be sold into the European Union. The OEM wishes not to be the holding company at this point. Since, it is designed for an OEM account, I cannot use are standard sales channels of reps and distributors to hold the Declaration of Conformity or the Technical file in Europe. Does anybody know a reputable organization that would offer this service and the approximate dues that are required? Best Regards, Gary Labadie Marketing Acromag, Inc. 30765 Wixom Rd.Ph: (248)624-1541 ext. 205 P.O. Box 437 Fax:(248)624-9234 Wixom, MI 48393Email: glaba...@acromag.com
RE: MIL-STD 461D/462D course ?
I suggest that you review the course offered by RB Enterprises 20 Clipper Road West Conshohocken, PA 19428-2721 USA Tel: (610) 825-1960 Fax: (610) 825-1684 rb...@ix.netcom.com Their next 3 day course on Understanding and Applying MIL-STD-461D/462D is Aug 5-7 for a cost of $1,095. I have not personally taken this course, but I have taken another course offered by RB and found it to be very good. Richard Woods Sensormatic Electronics wo...@sensormatic.com Views expressed by the author do not necessarily represent those of Sensormatic. -- From: petter.gar...@enator.se[SMTP:petter.gar...@enator.se] Reply To: petter.gar...@enator.se Sent: Tuesday, June 09, 1998 7:26 AM To: emc-p...@ieee.org Subject: MIL-STD 461D/462D course ? Hi Does anyone know of a good course in measurement according to MIL-STD 461D/462D? Reply to me direct please Thank you ! -- Petter Gärdin ENATOR Communications AB P.O. Box 360 S-83125 ÖSTERSUND SWEDEN Email: petter.gar...@enator.se Amateur Radio Callsign: SM3PXO Phone: +46 63 156233 Fax: +46 63 156199
CCFL Inverter Board
We are in the process of designing a wall mount terminal that mounts on a docking station. It uses a 2 wire class 2 supply. My question has to do with the DC to AC inverter that is used to power the LCD. The input power is 5 Vdc @ .7 Adc, the output voltage is 1100 Vrms @ 5.4 marms and the operating frequency is 32 to 42 KHz. My question is since this has high series internal impedance it is responsible for a constant current. because of this the circuit produces its nominal output current under almost any load, from high impedance to a dead short. Since this output is an ac constant current source the output will supply its nominal output current into a shout circuit. This circuit satisfies the definition of Limited Current Circuits in 1950 .In a single fault condition the current measured is 6.6 ma @33KHz under the 23.8 ma allowable at this frequency. None of this is operator accessible with power on. My questions are; Is reinforced insulation required on the output section? Or because it falls under the Limited Current Circuits basic insulation is required. I don't know the rationale behind this section of the standard but it seems it is not exactly a safe circuit. Thanks in advance Bob McIntosh Kronos Inc
What is Class 1, Div. 1 Group D?
Yesterday we had a customer call asking if our products were Class 1, Div. 1, Group D compliant. Can anyone tell me where I can get information on what it is and what it takes to meet it? Jim Bacher Paxar-Monarch bach...@monarch.com
MIL-STD 461D/462D course ?
Hi Does anyone know of a good course in measurement according to MIL-STD 461D/462D? Reply to me direct please Thank you ! -- Petter Gärdin ENATOR Communications AB P.O. Box 360 S-83125 ÖSTERSUND SWEDEN Email: petter.gar...@enator.se Amateur Radio Callsign: SM3PXO Phone: +46 63 156233 Fax: +46 63 156199
Re:RE: covers over connectors (IEC1010)
Hello Chris and everyone, I'm using UL 3101-1 (October 1993) which is in fact IEC 1010 with some deviations. Section 6: Protection against electric shock, subsection 6.1.1. contains exceptions where HAZARDOUS LIVE parts are permitted to be ACCESSIBLE to the OPERATOR during NORMAL USE. Third exception is: TERMINALS and sockets of operating and measuring circuits, if it is unavoidable for operating reasons that they be both ACCESSIBLE and HAZARDOUS LIVE. It also requires the parts to be non-hazardous 10 seconds after power off, requires that they be protected as far as possible against unintentional contact by covering , recessing, or position arrangement. It also requires that they be marked with warning markings and statements in documentation. This makes perfect sense to me when dealing with technical operators and not office or home personnel. thanks in advance for your comments, Moshe Valdman Moshe, Have you got a copy of IEC 1010 (more correctly IEC 61010 (EN 61010) Safety requirements for electrical equipment for measurement, control, and laboratory use)? I don't have a full copy to hand (it is out of my library at present) but it is not far removed from EN 60065 or 60950 both of which require tool fitted covers. What does Clause 6.12.3.2 (Appliance couplers and plugs) say? I know that moving parts must be protected by tool fitted covers (Clause 7.2). Chris
EMC Items for Sale
People, Listed below are the last remains of a diagnostic EMC lab that is no more. The items are in the UK. Any interest please contact :- jharri...@evesham.com. All asking prices are ex-vat, o.v.n.o. Reasonable offers acceptable for the whole bundle.or make an offer !! Equipment presently in UK. ANRITSU WILTRON 2601B Spectrum Analyser with AUDIO DEMODULATOR OPTION £5957 CHASE BICON ANTENNA VBA6106A (30-300Mhz) £425 CHASE CPA9230 30dB PREAMP (N-TYPE) 9k-1GHz £170 CHASE NEAR-FIELD PROBE SET NFPS-14 (2 months old) £765 comprising MFP9150 (Mag, 9KHz-30MHz) MFP9151 (Mag, 30MHz-1GHz) EFP9152 (Electric, 9KHz-1GHz) CPA9231 30dB Pre-amp 9KHz-1GHz Power Adaptor Cables HILOTEST EFTG4510 ELECTRICAL FAST TRANSIENT/BURST GENERATOR £4255 SCHLODER SESD200 ESD GUN CHARGER £2553 ROXBURGH POWER FILTER, 16A, SINGLE PHASE £170 also 15 slabs of AN79 absorber approx 600mm*600mm*110mm at £85 EACH ?
RE: covers over connectors (IEC1010)
Moshe, Have you got a copy of IEC 1010 (more correctly IEC 61010 (EN 61010) Safety requirements for electrical equipment for measurement, control, and laboratory use)? I don't have a full copy to hand (it is out of my library at present) but it is not far removed from EN 60065 or 60950 both of which require tool fitted covers. What does Clause 6.12.3.2 (Apliance couplers and plugs) say? I know that moving parts must be protected by tool fitted covers (Clause 7.2). Chris -Original Message- From: moshe_valdman_at_isr-rhv...@mail.nsix.co.il [SMTP:moshe_valdman_at_isr-rhv...@mail.nsix.co.il] Sent: Monday, June 08, 1998 4:19 PM To: emc-p...@ieee.org Subject: Fwd:covers over connectors (IEC1010) Hello Again, Sorry for taking more of your time. After getting several responses, I just wanted to make it clear: 1. I _am_ using female connectors but they are relatively large (high current) and the accessibility test pin can touch the connector pins. 2. The IEC1010, in contrast to 950 and 065 assumes operators who are technical, so screws on covers might not always be required (?). thanks again, Moshe Valdman Hello everyone, To avoid contact with hazardous voltage in some connectors I need to cover them. I have 2 questions regarding this: 1. Is it OK for the covers to be removed without a tool? (i.e. held not by a screw but with some kind of reliable clip) 2. What should be marked/written on the covers? Will the exclamation mark in a triangle be enough? Do I need to have some text there? thanks, Moshe Valdman
RE: covers over connectors
Jerry, You can indeed put your fingers into a bayonet or Edison screw lamp socket if you are so inclined. Some new models isolate the contacts when the bulb is removed though. However they are not covered by the standard under discussion. This is one of the anomalies of safety standards that they do not all have the same level of safety. How much would it cost the world to change from the bayonet cap fitting though - how many millions are in use right now? As per many standards the decision is commercially motivated... new homes have RCD breakers so people are protected, the home being where most people are most at risk. Getting back on track however, we were talking about IEC 1010 or more correctly IEC 61010 (EN 61010) Safety requirements for electrical equipment for measurement, control, and laboratory use. I don't have a full copy to hand but it is not far removed from EN 60065 or 60950 both of which require tool fitted covers. Chris -Original Message- From: Jerry Roberton [SMTP:jerry_rober...@net.com] Sent: Tuesday, June 09, 1998 1:08 AM To: James, Chris Subject: Re: covers over connectors REcovers over connectors (IEC1010) 8/6/98 Chris, How come you can stick your fingers into a bayonet lighting fitting at any time without tools and inflict shock + death whenever a bulb is not present? Jerry Roberton -- Date: 8/6/98 7:38 am To: Jerry Roberton From: James, Chris For EN 60065 or 60950 Covers or access to hazardous voltages must not be accessible without the use of a tool, so clips etc. are not satisfactory. A screwdriver constitutes a tool so screws are the simplest fixing. -Original Message- From: moshe_valdman_at_isr-rhv...@mail.nsix.co.il [SMTP:moshe_valdman_at_isr-rhv...@mail.nsix.co.il] Sent: Monday, June 08, 1998 9:53 AM To: emc-p...@ieee.org Subject:covers over connectors (IEC1010) Hello everyone, To avoid contact with hazardous voltage in some connectors I need to cover them. I have 2 questions regarding this: 1. Is it OK for the covers to be removed without a tool? (i.e. held not by a screw but with some kind of reliable clip) 2. What should be marked/written on the covers? Will the exclamation mark in a triangle be enough? Do I need to have some text there? thanks, Moshe Valdman -- RFC822 Header Follows -- Received: by mac3.net.com with ADMIN;8 Jun 1998 07:36:55 -0800 Received: from ns1.net.com by unet.net.com (SMI-8.6/SMI-SVR4) id HAA12379; Mon, 8 Jun 1998 07:37:42 -0700 Received: from ruebert.ieee.org (ruebert.ieee.org [199.172.136.3]) by ns1.net.com (8.8.6/8.6.9) with ESMTP id HAA03501; Mon, 8 Jun 1998 07:41:11 -0700 (PDT) Received: (from daemon@localhost) by ruebert.ieee.org (8.8.8/8.8.8) id HAA22629; Mon, 8 Jun 1998 07:55:12 -0400 (EDT) Message-ID: 4fbe5e6c719dd111aab600805f853b6a1ae...@xwb1.dolby.co.uk From: James, Chris c...@dolby.co.uk To: 'moshe_valdman_at_isr-rhv...@mail.nsix.co.il' moshe_valdman_at_isr-rhv...@mail.nsix.co.il, emc-p...@ieee.org Subject: RE: covers over connectors (IEC1010) Date: Mon, 8 Jun 1998 12:54:37 +0100 X-Priority: 3 X-Mailer: Internet Mail Service (5.0.1458.49) Sender: owner-emc-p...@majordomo.ieee.org Precedence: bulk Reply-To: James, Chris c...@dolby.co.uk X-Resent-To: Multiple Recipients emc-p...@majordomo.ieee.org X-Listname: emc-pstc X-Info: Help requests to emc-pstc-requ...@majordomo.ieee.org X-Info: [Un]Subscribe requests to majord...@majordomo.ieee.org X-Moderator-Address: emc-pstc-appro...@majordomo.ieee.org
1998 IEEE/EMC Symposium
Well where is everyone's Registration for the 1998 IEEE/EMC symposium that is Denver Colorado in August 24-28, its only 12 weeks away. Sign up early and get the best room in the hotel. Seriously I am trying to find out who has not yet received the advanced program for the symposium, and would like one. The advanced program has all the session information and the registration sheet contained within the program. This years symposium will be big and we will have lots of room within the exhibit hall. And yes there will be some product safety this year. Visit our web site and complete an on-line registration this year. http://www.ball.com/aerospace/ieee_emc.html === Keith A. Goshia Phone: (303) 473-6956 Senior Regulatory Engineer Cell: (303) 507-0158 A-108 Fax: (303) 473-6650 Qualcomm Inc.Pager: (800) 401-3175 5450 Western Ave. Lab: (303) 247-5107 Boulder CO, 80301 E-mail: kgos...@qualcomm.com === How does Teflon stick to the pan?
