Here is one possible market driven scenario:
Power Tool - sold by Home Depot, etc. = Home Depot requires certification on
everything electrical they sell = Tool mfg. gets certification for battery
operated tool so they can sell via Home Depot.
Cell Phone - sold by Cell phone carriers and small
Having worked at UL for many years in ITE, and having been the UL seminar
leader for ITE for several years, blocking vents during on one side only was
always the rule/what we taught = one fault at a time. Of course the years
have been adding on since my days at UL so things may have changed. I
Any single fault that could possibly result in a shock hazard and/or a fire
hazard should be fault tested. Close analysis of the electrical schematic can
help determine which faults could raise voltage levels in accessible circuits
above the shock hazard level and/or are located such that they
Dave,
No, you don't need to defeat a certified fan during fault tests. The general
rule of thumb in the product safety standards is one abnormal at a time.
You also like to see reliable repeatable means for terminating a fault
condition (i.e. certified protective device). As such, non-certified
Chris,
I wasn't real clear on what was breaking during your hipot test. However,
these comments might help:
1) Be sure you are hipot testing with a DC test voltage. AC testing can
damage your Y capacitors. DC test voltage = peak of AC test voltage = 1.414
x AC test voltage.
2) If your product
Brian,
Working voltage is determined in the same manner as 950, 1010, etc. A special
consideration is that you may have to consider the possibility of any patient
connection being earthed.
Table 16:
The first row titled “equivalent to Basic insulation between parts of
opposite polarity” is
1. You have already received many good material suggestions from by others
but do you really need 94V-0? I believe that most standards will allow 94V-2
for this purpose (assuming it provides the necessary creepage clearance
distances and passes the dielectric strength test).
2. If the enclosure
Dave,
Your questions combine two tests:
1) There are no leakage current limits during hipot testing. The hipot test
seeks insulation breakdowns (insulating materials air), not excessive
current through filter capacitors. The 3.5 mA leakage current limit refers
to the separate Leakage Current
This is a multi-part message in MIME format.
Chris,
I don't know anything about the G.692 but, the IP55 code is a product safety
requirement and it can be a big deal, especially a 55.
IP55 is the International Ingress Protection rating per IEC529 and is
referred to as the IP code for the
No registration is required if:
1) You put a Class I laser product into your product (in its entirety) and
your product is Class I.
2) You include the documentation that came with the laser product with your
product.
3) You leave all the labeling on the laser product as you received.
There is an
1) Are all RBOC’s currently requiring GR-1089-CORE issue 2?
2) Anybody know when issue 3 will be required by an RBOC?
3) Can anybody who has issue 3 please send me Section 7.3 Continuous
Source Requirements and associated Fig. 7.4?
Thanks for the help,
Bill Bisenius
EDD
Creepage Clearance distances in many IEC/EN standards including IEC61010-1
and thereby EN61010-1 are drawn from IEC60664-1: Insulation coordination for
equipment within low-voltage systems - Part 1: Principles, requirements and
tests.
Bill Bisenius
EDD
bi...@productsafet.com
We use and sell (conflict alert) the same thermocouple paste I used when I
worked at UL (the brown stuff - doesn't seem to have another name except
thermocouple paste) - see our web site www.productsafeT.com. Appears to have
good thermal conductivity while having low electrical conductivity (when
All symbols in Table 1 of EN61010-1:2001 are from the graphic symbol
standard EN60417 except symbol 14 (exclamation point in an equilateral
triangle). Symbol 14 references ISO7000, symbol #0434. I hate to get a
standard for 1 symbol. Does anybody have the layout or artwork for this
symbol that
IEC825-1 and CDRH requirements are focused on the laser product and
incorporating provisions in the product for a safe installation. However,
they do not include much on the actual installation and use/human
interaction (other than for laser light shows). I recommend that you review
NFPA115 -
Does anybody know any Certification Agencies and/or Standards anywhere in
the world requiring Production Line Leakage Current Testing on Electrical
Medical Products? If so, does anybody have it in writing?
Thanks for the help,
Bill Bisenius
EDD, Inc.
bi...@productsafet.com
Telecom - Product Safety Question:
I am looking for a test generator per clause 2.3.5 of IEC60950 = a test
generator is used that provides 120 V +/- 2 VAC at 50 or 60 Hz and has an
internal impedance of 1200 ohms +/- 2%. Anybody have any input on a source
to buy or a method to build such a
EDD is a world leader in the manufacture, sale, and distribution of Product
Safety Test Equipment. We are in search of turn-key test equipment
developers for both standard off-the-shelf and custom Product Safety
Test Equipment = some products are all mechanical, some are primarily
electrical,
I certainly agree that reinforced can be a solid insulation - hence the 0.4.
mm thickness requirement. Sorry if my memo gave you a different impression.
Bill Bisenius
bi...@productsafet.com
-Original Message-
From: owner-emc-p...@majordomo.ieee.org
A reinforced insulation system by definition may be multiple layers if it is
all the same insulating material. Two different insulating materials must be
evaluated as double insulation = one of the materials must meet the
requirements for basic insulation, the other material must meet the
Creepage distance has nothing to do with current within the context of the
product safety standards.
Creepage distance is the distance across the surface of an insulating
material. The specific Creepage distance for any product safety application
is based on:
1) Working Voltage,
2)
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