Toby,
We use the creepage and clearance requirements as outlined in EN60601, EN601, IEC950, etc.
For marking I use the European triangle with the lightning bolt/arrow.
If wording is used I use the requirements of ANSI Z535.6 to determine the level of hazard presented by the high voltage;
Is death or serious injury a credible possibility? If No, then use CAUTION
If hazardous situation occurs, how likely is accident? If Possible, then use WARNING
If accident occurs, how likely is death or serious injury? If Possible, then use WARNING
If accident occurs, how likely is death or serious injury? If Almost Certain, then use DANGER
The use of Danger versus Warning is a bit subjective. Take into consideration the voltage and current levels present in the hazard.
I hope this helps,
Phil Nutting
Design for Manufacturing Engineer
Kaiser Systems, Inc.
126 Sohier Road
Beverly, MA 01915
voice: 978-922-9300 x1310
fax: 978-922-8374
e-mail: [log in to unmask]
www.kaisersystems.com
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Toby Carrier
Sent: Wednesday, July 08, 2009 3:20 PM
To: [log in to unmask]
Subject: [TN] IPC High Voltage PCB Marking and Spacing
Hi All,
Does anyone know of an IPC standard that states a requirement of high
voltage spacing and marking? I know that UL requires spacing based on the
voltage, but not for sure about IPC. Thanks for the help.
Toby
Engineering Technician
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