David,
I am familiar with IEEE Std 315, IEEE Std 315A
(supplement) and the IEC 60617 database.
The 315 was created in 1975 and the 315A in 1986. These
documents show some symbols with an over and under lined
"IEC" label. At the time of creation the IEC reference was
to the symbols in IEC publication 117. At the beginning of
the 1980s IEC Publication 117: "Recommended graphical
symbols" was replaced by Publication 617. Another ten years
on and Publication 617 was replaced by IEC 60617.
Many of the 315 and 315A document symbols no longer
match what is in the current IEC 60617 database. For example
the IEEE Std shows two "IEC" options for a resistor; a
zig-zag line or a rectangle. Look in IEC 60617 and you find
the zig zag resistor symbol (ref. S01355) was made obsolete
in 1996-06 being replaced by the rectangle symbol (ref.
S00555). There are many other symbol instances where the
315/315A are out of date compared to IEC 60617.
The frustration with both the IEEE and IEC documents is
that all the symbols are bit maps meaning you have to create
your own vector versions or buy vector versions elsewhere. A
years subscription to the IEC 60617 is expensive if you just
want to check what is available. An alternative is to Google
commercial libraries for CAD software as these will often
have thumbnails of the symbols available. Just because a
well-known vendor offers a set of IEC 60617 symbols doesn't
mean they are drawn correctly either. The Autodesk Knowledge
network does give you (fuzzy) previews of various symbol
sets. You could have a stab in the dark and Google something
like IEC60617 Symbols.pdf in the hope of getting a PDF file
listing the symbols.
Regards
Mick
On 13/01/2015 19:06, Nyffenegger, Dave wrote:
Hi folks,
Anyone familiar with in IEC 60617-DB:2001 and IEEE 315/315A? Perhaps the older
IEEE standards are just a subset of the newer IEC standard?
-Dave
-----Original Message-----
From: Nyffenegger, Dave [mailto:dave.nyffeneg...@bhemail.com]
Sent: Saturday, January 10, 2015 12:05 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Graphic Symbols for Electrical and Electronics Diagrams
Hi Folks,
EN 60204-1 section 17.6 says " Any graphical symbol not shown in IEC
60617-DB:2001 shall be separately shown and described on the diagrams or supporting
documents." NFPA 79 is harmonizing to EN 60204 and 17.7.1 has similar
language but refers to IEEE 315/315A. I don't have either symbol standard yet and
IEC 60717 is only available by subscription to online dB. The IEEE standards have
been around for quite a while. I'm wondering how similar the symbols are between
IEC 60617 and IEEE 315, anybody know? I can buy a copy of IEEE 315 for a reasonable
price and I'm wondering if there is any additional need for the IEC 60617. One
would hope that a common set of symbols would be acceptable in the US and Europe.
Also, does anyone know what the restrictions are on the IEEE standard PDF
files? i.e. on one end of the spectrum with only a watermark and the other end
node locked to a single PC, can't print or can only print 1 copy ever, can't
move to another PC when the original goes south without divine intervention,
making the PDF pretty much useless etc?
Thanks
-Dave
David P. Nyffenegger, PMP, SM-IEEE
Product Development Manager
Bell and Howell
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