Unless of course it self limits the current etc when max power is
measured,
or not provided.
Gary
From: [email protected] [mailto:[email protected]]
Sent: Thursday, February 06, 2003 5:43 AM
To: [email protected]; [email protected]
Subject: RE: Ethernet Creepage and Clearance
The only safty reg I know of pertains to the 15-pin DB-mini connector for
the 'AUI' interface:
Safety agencies require a fuse (or current-limiting) on AUI Pin 13 which
sources 12 volts. Otherwise they consider the AUI 'hazardous', requiring
all sorts of stickers and warnings.
ANSI/IEEE 802.3 specifies 300mA source capability for the AUI but not all
AUI interfaces are 802.3 compliant; they may source less than 300mA.
Review all power supply outputs (PC card, custom adapters) to verify they
are limited-current per EN 60950.
David
From: Alex McNeil [mailto:[email protected]]
Sent: Thursday, February 06, 2003 2:56 AM
To: [email protected]
Subject: Ethernet Creepage and Clearance
Hi Forum,
Are there any ethernet and PCB safety requirements, ie are there rules like
those for the modem side of things (isolation in particular) or is the
transformer sufficient?
Kind Regards
Alex McNeil
Principal Engineer
Tel: +44 (0)131 479 8375
Fax:+44 (0)131 479 8321
email: [email protected]
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