Derek, though it's a loose fit, EN61010.1, for Test, Measurement and
Control Equipment might work for you. Though HVAC in Europe is
admittedly not my forte, I'm not aware of a 'journaled' or 'EN' standard
for HVAC (unless there's a fairly recent addition), so for lack of a
better standard, it
Craig, this is a common problem. My experience is with North American
Manufacturers selling to Europe. In order to comply with the Low Voltage
Directive (LVD), and Self-Declare compliance with the CE Mark, one
applies an EN standard such as EN1010, for Test, Measurement and Control
Equipment, or
PS Net
There have been a lot of opinions given... some in the spirit of
the requirements others shaving the edge of the written requirements...
One factor that clouds the issue is that of who will install this
equipment... in one case mentioned - the cash dispensing machines
Hi Scott:
The cause of the neutral-earth voltage is the neutral
current times the neutral resisitance to the point
where the neutral is connected to earth. The higher
the neutral current, the higher the voltage difference
between the neutral and earth conductors.
Building power distribution
Richard,
It has been a few years now that for ITE, NRTLs do not require a
detachable type power supply cord to be shipped with the unit. At
some point, they required that for units not provided with
detachable cords, a non-permanent marking be provided by the
power Inlet See Installation
Dear Craig,
SEE BELOW FOR MY RECOMMENDATION. LET ME KNOW
WHAT YOUR COMPANY THINKS!
My company manufacturers external high capacity disk drive systems
(computer peripherals) which are shipped worldwide.
North American shipments include an ac-dc direct plug-in power supply.
International
Kate,
Yes, it is included in UL1950 Third Edition. See section 6.4.3 and
covers acoustic requirements for telephone handsets or headsets.
Regards,
Hey, folks -
Can any of the UL people (or anyone else) out there confirm for me
whether or not Peak Acoustic Pressure is directly included
I have a question about what is an acceptable voltage range for voltage
measured between the Neutral line and the Earth line in both the USA and
in Europe. I am concerned strictly with 115 and 230 VAC systems for ITE.
I know that in the USA we measure from Hot to Earth and get approx. 115
VAC and
Folks,
can anyone tell me what components make up the ESD discharge model for
ANSI C62.38-1994
Thanks,
Derek Walton
Owner L F Research EMC Design and Test Facility
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Hello All,
I have a LISN from EMCO and it has a Ground Choke. What's the goal of
this Ground Choke? Is it really needed in the conducted measurements?
Could somebody make this clear to me?
Thanks in advance
Muriel
--
==
Muriel Bittencourt de
If you have UL Listing, then you must ship a power cord with each unit. The
cord shipped must be acceptable for the target country - i.e., have the
appropriate safety approval.
--
From: CRAIG HENSLEY [SMTP:hens...@iomega.com]
Sent: Wednesday, December 02, 1998
Folks,
can anyone suggest a EU product standard for EMC testing an electrical
actuator. The product is used in HVAC applications.
Thanks,
Derek Walton
Owner L F Research EMC Design and Test Facility
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To cancel your
Craig,
We faced the same dilemma with our products. Shipping word-wide and trying
to get all products to have the same certifications without question as to
destination was tough. In the end, we use an IEC320 appliance inlet on all
products and have in stock 10 different power cordsets. We make
My company (NCR) ships automated teller machines worldwide. Our policy
on plugs is simple: -
If the product is 120V, we supply a UL/CSA cordset with a NEMA plug,
and if the product is 220/230/240V, we supply a HAR cordset, WITHOUT
A PLUG, together with a one page chart showing the plugs for
Brian,
I perform this calibration without automated positioning equipment with
only 32 probe position changes covering both vert and horiz polarizations.
This data is usable for generating uniform field levels from 1 to 20 V/m
at ANY level desired. The trick is to follow the 61000-4-3 par.
Hi Craig:
The short answer to your questions is:
Continue as you are currently doing (i.e., provide
the correct cordset for the country of destination)
HP provides the correct cordset for the country of
destination. (Almost all of our products are wide-
range, 100-240 V, 50-60 Hz.)
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