Some of the standards in the EN54-series (fire alarm equipment / CPR -
Contruction Product Regulations) have reference to the EMC standard
EN50130-4. Not only the standard is cited, but also the version (EN
50130-4:1995+A1:1998). I've been told that Notified Bodies shall use only
the standards in
In message 000a01cf2182$bfd4c090$3f7e41b0$@westin-emission.no, dated
Tue, 4 Feb 2014, Amund Westin am...@westin-emission.no writes:
ome of the standards in the EN54-series (fire alarm equipment / CPR -
Contruction Product Regulations) have reference to the EMC standard
EN50130-4. Not only the
Amund, everyone
The principle is that the primary harmonised standard (in this case EN 54)
sets the requirements, and the dated reference prevails over the edition
listed in the OJ. However if EN 50130-4 is applied directly in its own
right to a product, then the OJ dates are used.
The guidance
In message 00bc01cf2191$4d2ec900$e78c5b00$@co.uk, dated Tue, 4 Feb
2014, Brian Jones e...@brianjones.co.uk writes:
he principle is that the primary harmonised standard (in this case EN
54) sets the requirements, and the dated reference prevails over the
edition listed in the OJ. However if
Brian,
That guidance is not quite applicable here. Only EN 50130-4 is listed in the OJ
as an EMC standard and so can be the only standard used for presumption of
conformity. The EN 54 series is a product performance set of standards and the
requirements contained therein technically have no
Kevin, everyone
OK, this is a problem with giving general guidance on a list such as this!
The guidance that I described works when the two harmonised standards are
harmonised under the same directive or regulation.
I am not familiar with the Construction Products Regulation 305/2011 but the
CEN
In message 023e01cf21ca$7b5915e0$720b41a0$@co.uk, dated Tue, 4 Feb
2014, Brian Jones e...@brianjones.co.uk writes:
OK, this is a problem with giving general guidance on a list such as
this! The guidance that I described works when the two harmonised
standards are harmonised under the same
From: Crane, Lauren
Sent: Friday, January 31, 2014 12:27
John,
Your reply makes sense to me, but it also brings me to
notice that circuit is used freely in the surrounding
text, and yet the standard says regulating network
rather than regulating circuit perhaps this implies
network is a
Electrical engineering offers coures in Network theory, electrical circuits
therory etc However if you make a schematic with Z1, Z2 Z3 etc in
series/Parallel combination, It is more like impedence network and not really a
circuit. You can transform this network to circuits by changing Z1, Z2,
In message 1391542671.33395.yahoomail...@web141102.mail.bf1.yahoo.com,
dated Tue, 4 Feb 2014, sudhakar wasnik saloni95...@yahoo.com writes:
So in short impedence single element/combination is a network and RLC
single element/combination is circuit
There are millions of such examples, many of
From: sudhakar wasnik
Sent: Tuesday, February 04, 2014 11:38
So in short impedence single element/combination is a
network and RLC single element/combination is circuit.
Any takers
It's completely arbitrary whether or not a circuit is considered a
network. A differentiation could be
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