riday
James
From: John Woodgate
Sent: 15 November 2018 19:07
To: James Pawson (U3C) ;
EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] 62368-1 - Resistive PIS Question
There is no such thing as 'RMS power'. The product of RMS voltage and
current which are in phase is average power. I
Hello, Rich, I was trying to paraphrase the text in the standard to
clarify, not correct, it. Your proposal changes the time when the power
is measured from after 30 s to before 30 s. That's quite a change.
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleig
There is no such thing as 'RMS power'. The product of RMS voltage and
current which are in phase is average power. In IEC standards, voltages
and currents are RMS, and powers are average, unless otherwise stated.
The first dashed item is fairly well worded, The second and third are
not well wo
Hi James:
You asked:
1. It would makes sense to me that these powers are defined as rms power.
This would be the power that causes heating over time. For instance a GSM
module that takes bursts of 10W for at a 1/8 duty cycle isn’t consuming 10W,
rather 1.25W. The standard does no
Hi folks,
I seem to be more take than give at the moment, my apologies.
IEC/EN 62368-1 classifies ignition hazards as a Potential Ignition Source
(PIS)
A resistive PIS is any part in a PS2 or PS3 circuit that:
- dissipates more than 15 W measured after 30 s of normal operation; OR
NOTE
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