Dee,
Section D.1.1 of annex D defines the "working voltage" as "the
highest r.m.s. value of the a.c or d.c. voltage which may occur
(locally) across any insulation at RATED supply voltage, transients
being disregarded". This would mean that if the two voltages were
in phase (unless they are from different taps of a transformer -
this should be verified) the highest r.m.s. value would be 450 -
150 or 300 Vrms. Obviously if the voltages are 180 degrees out of
phase, the values would sum to 600 Vrms. I would suggest using a
good multimeter with the proper Overvoltage Installation Category
to measure between the two lines and read the TRUE R.M.S. voltage
directly.
Best regards,
Dan Teninty P.E.
Senior Engineering Specialist
Systems Safety
Raytheon Missile Systems
Tucson, AZ
[email protected]
The above is the sole expression of my personal opinion and does
not represent my employer.
______________________________ Reply Separator _________________________________
Subject: ? EN61010-1
Author: [email protected] at mime
List-Post: [email protected]
Date: 8/28/98 1:42 PM
Using table D2 and CTI 1, what is the creepage distance between two circuits
with in-phase voltage. CKT1 has working voltage 150Vrms and CKT2 has working
voltage 450Vrms. What would the creepage distance be if the two circuits
were 180 deg out of phase?
Thks,
Dee
---------
This message is coming from the emc-pstc discussion list.
To cancel your subscription, send mail to [email protected]
with the single line: "unsubscribe emc-pstc" (without the
quotes). For help, send mail to [email protected],
[email protected], or [email protected] (the list
administrators).
RFC-822-headers:
Received: from CONVERSION-DAEMON by mail.hac.com (PMDF V5.1-10 #26245)
id <[email protected]> for "daniel e teninty"@mime.mail.hac.com;
Fri, 28 Aug 1998 17:13:35 -0700 (PDT)
Received: from PROCESS-DAEMON by mail.hac.com (PMDF V5.1-10 #26245)
id <[email protected]> for "daniel e teninty"@mime.mail.hac.com;
Fri, 28 Aug 1998 17:13:34 -0700 (PDT)
Received: from fw-tu05.hac.com by mail.hac.com (PMDF V5.1-10 #26245)
with ESMTP id <[email protected]> for
"daniel e teninty"@mime.mail.hac.com; Fri, 28 Aug 1998 17:13:34 -0700 (PDT)
Received: from ruebert.ieee.org ([199.172.136.3])
by fw-tu05.hac.com (8.9.0/8.9.0) with ESMTP id RAA07657 for
<[email protected]>; Fri, 28 Aug 1998 17:02:10 -0700 (MST)
Received: by ruebert.ieee.org (8.8.8/8.8.8) id QAA03163 for emc-pstc-resent;
Fri, 28 Aug 1998 16:42:40 -0400 (EDT)
List-Post: [email protected]
Date: Fri, 28 Aug 1998 15:42:03 -0500
From: "Harris, Deotis" <[email protected]>
Subject: ? EN61010-1
Sender: [email protected]
X-Resent-to: Multiple Recipients <[email protected]>
Reply-to: "Harris, Deotis" <[email protected]>
Message-id:
<8af646aa0cccd111ad140060089047df097...@apc-trader.austin.apc.slb.com>
MIME-version: 1.0
X-Mailer: Internet Mail Service (5.5.2232.9)
Precedence: bulk
X-Info: Help requests to [email protected]
X-Info: [Un]Subscribe requests to [email protected]
X-Moderator-Address: [email protected]
X-Listname: emc-pstc
