RE: FW: 60950-1:2006 clause 2.5 - Limited power sources

2008-06-23 Thread Jim Eichner
That's my feeling - it's an illogical exclusion.  At most the standard
should disallow the use of any (ie technology neutral) device that has
not been tested to a relevant standard that takes cycle life into
account, but to pick on auto-reset electromechanical devices while
allowing auto-reset solid state devices seems very odd, especially since
the latter are more likely to be damaged by surges and the like.

Any '950 authors lurking who haven't commented yet?

Jim Eichner, P.Eng.
Compliance Engineering Manager
Xantrex Technology Inc.
e-mail: jim.eich...@xantrex.com
web: www.xantrex.com  

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From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of John
Woodgate
Sent: Friday, June 20, 2008 5:15 AM
To: emc-p...@ieee.org
Subject: Re: FW: 60950-1:2006 clause 2.5 - Limited power sources

In message 
de87437fe365cb458c265ea3d73b6f1d039ad...@xbc-mail1.xantrex.com, dated 
Fri, 20 Jun 2008, Jim Eichner jim.eich...@xantrex.com writes:


To be clear, the LPS application would not be a circuit breaker as 
the term is commonly used.  The language from '950 that I objected to 
was regarding automatically resetting overcurrent protective devices, 
so rather than a circuit breaker it would be something like a thermal 
auto-reset device that I would call a current limiter or a circuit 
protector not a breaker.  Semantics to some extent, but auto-reset was

the main attribute for this discussion.

Well, if it's not a circuit-breaker (electromechanical, and therefore 
reliability is an issue), it makes even less sense to allow PTCs. I 
suspect that the ban on auto-reset was lifted for PTCs because if not it

would be an absolute ban on their use. But it's not logical.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to
stop it,
or natural variation is causing it, and we probably can't stop it. You
choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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RE: ENEC european complaince

2008-06-23 Thread Tyra, John
While not mandatory the ENEC Mark can be useful on components as some Agencies 
will accept this Mark as showing compliance to the applicable component 
standards. I have found this useful when getting a CB report for a product 
which incorporates an ENEC Marked safety critical component.




From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of John Woodgate
Sent: Thursday, June 19, 2008 3:32 PM
To: emc-p...@ieee.org
Subject: Re: ENEC european complaince


In message 949938.62703...@web65406.mail.ac4.yahoo.com, dated Thu, 19 
Jun 2008, sudhakar wasnik saloni95...@yahoo.com writes:


 
Is  ENEC mark mandatory for electrical products?
 

No, absolutely not. Compliance with the legal requirements of the Low 
Voltage Directive effectively makes such schemes irrelevant.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Either we 
are causing global warming, in which case we may be able to stop it, or natural 
variation is causing it, and we probably can't stop it. You choose! John 
Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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Re: ENEC european complaince

2008-06-23 Thread John Woodgate

In message 
3c6137471f17424280d9b2ceaefd7f853b6...@usmafrexmb01.bose.com, dated 
Mon, 23 Jun 2008, Tyra, John john_t...@bose.com writes:


While not mandatory the ENEC Mark can be useful on components as some 
Agencies will accept this Mark as showing compliance to the applicable 
component standards. I have found this useful when getting a CB report 
for a product which incorporates an ENEC Marked safety critical 
component.

..but I bet your company didn't pay the fee for the ENEC mark.

Of course, the LVD doesn't apply to components, but even so, a 
certificate from an accredited test lab that the component complies with 
the relevant IEC or UL standard is just as acceptable for CB, without 
attracting the licence fee for the ENEC mark.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to stop it,
or natural variation is causing it, and we probably can't stop it. You choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

-

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Compliance position at Xantrex in Livermore, CA

2008-06-23 Thread Jim Eichner
We are looking to hire a full-time compliance engineer for our Livermore
operation, which focuses on 3-phase solar and wind power products from
30kW into the low megawatts.  The position deals mostly with product
safety and utility interconnection compliance, with any EMC or other
product regulatory knowledge being an asset but not essential.  The job
description is under my signoff below.  If you are interested please
apply through our website at
http://www.xantrex.com/corporate/careers/index.asp , but if you are
serious and have specific questions first, you can contact me directly,
off-line.

Thanks,

Jim Eichner, P.Eng.
Compliance Engineering Manager
Xantrex Technology Inc.
e-mail: jim.eich...@xantrex.com
web: www.xantrex.com  

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Job Description:

Xantrex Technology Inc. is a world leader in advanced power electronics
headquartered near Vancouver, Canada. We are a fast-paced, dynamic,
cross-functional team-based company. Xantrex makes a positive difference
in the lives of people around the world by combining proven technology
with unparalleled market understanding to bring our customers products
that enable the delivery of electricity anytime, anywhere.

Position Summary:

Responsible for ensuring and maintaining product compliance with
regulatory requirements for product safety, utility interconnection and
Electromagnetic Compatibility (EMC) of solar and wind power conversion
products and accessories.  Work with design teams to provide guidance,
evaluate designs and test for compliance.  Work with regulatory agencies
and their standards to obtain and maintain certifications. 
   
Responsibilities:

* Plan and manage all compliance tasks for assigned programs
* Perform product safety, utility interconnection and EMC testing and
produce formal test reports for agencies, electric utilities and design
teams
* Evaluate product designs to ensure compliance in the final design:
* Provide interpretations of requirements to design teams
* Provide ongoing feedback and data to design teams
* Write and maintain the reports required to document regulatory
compliance
* Work with utilities, agencies and 3rd party test laboratories for the
purposes of:
 * Obtaining testing and evaluation services
 * Obtaining and maintaining product approvals
 * Obtaining interpretations of requirements
* Perform as a cross-functional team member to achieve the technical,
schedule and budget objectives of the program
* Stay current with applicable skills and trends in regulatory
compliance
* Participate in standard development committees relevant to Xantrex
products

Requirements:

* Electrical Engineering degree preferred, will consider technologist
with appropriate experience
* At least 5 years experience in product safety standards compliance,
preferably in the power electronics industry 
* Preference given to candidates with one or more of the following:
experience in solar or 
wind power, experience working with utilities and commissioning high
power systems, working knowledge of power conversion technology (motor
drives, inverters, power supplies) preferably at high power levels (10kW
- 2.5MW), experience in both low- and medium voltage (up to 20kV)
beneficial, experience with water-cooled systems
* Extensive knowledge of current worldwide regulations, standards, and
test methodology applicable to product safety, and ideally also utility
interconnection and EMC
* Hands-on skills - testing, troubleshooting, prototyping, etc.
* Detail oriented and thorough
* Ability to design and test compliance solutions, perform circuit
analysis 
* Strong written and oral communication skills, with emphasis on the
ability to create quality technical reports, test reports, and test
procedures
* Ability to work effectively with multi-disciplined design teams
* Strong organizational and time-management skills
* Ability to multi-task and to adapt to changing priorities
* Proficiency in MS Office (Excel, Powerpoint, Word  the internet)


**

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