I believe it is 2000-2700V and about 7-10A the value has increased from
1700V and 6A because some prisoners did not die.
Regards,
Jorge Sarellano
TUV PRODUCT SERVICE
Compliance Engineer
Phone 408-919-3744
Fax 408-919-0585
Have you visited http://www.tuvam.com lately?
-Original Message-
From: dan.kin...@heapg.com [mailto:dan.kin...@heapg.com]
Sent: Tuesday, November 13, 2001 1:56 PM
To: Rich Nute; gkerv...@eu-link.com
Cc: jrbar...@lexmark.com; emc-p...@majordomo.ieee.org
Subject: RE: Define Continuous DC Voltage
Does anyone know what voltage is used in electric chairs? Just Curious.
Dan Kinney
Horner APG
Indianapolis
-Original Message-
From: Rich Nute [SMTP:ri...@sdd.hp.com]
Sent: Tuesday, November 13, 2001 2:08 PM
To: gkerv...@eu-link.com
Cc: jrbar...@lexmark.com; emc-p...@majordomo.ieee.org
Subject: Re: Define Continuous DC Voltage
Hi Gregg:
There was also a very good (but short) article by Tektronix in the
70's
called The Lethal Current.
It concluded that currents between 100 mA and 3 Amps were more lethal
that
currents of more than 3 Amps because those high currents tended to
'restart'
the heart.
Hmm. Having been the manager of product safety at Tektronix in
the '70's, I don't recall such an article. At least not by that
name.
Electric energy causes various injuries to the body depending
on the magnitude of the energy. Only two of the injuries can
lead to a fatality.
The two injuries are fibrillation of the heart, and overheating
of internal organs, especially the liver.
Fibrillation is caused by ac current in the range of 50 mA to
500 mA (external connections) where the current pathway through
the body includes the chest (and the heart). Above 500 mA,
fibrillation is not a likely consequence. (And, I believe I
am correct in asserting that dc cannot cause fibrillation.)
Overheating of internal organs is a function of power dissipated
in the body, where the body impedance can be taken as 1000 ohms.
The power required depends on the time of contact. Electric
utility linemen are subject to such injury. Consider 1 ampere
through 1000 ohms is 1000 watts! (The electric chair kills by
over-heating the internal organs, not by fibrillation.)
So, Gregg's statement that there is both a lower and upper limit
for fibrillation is correct (although I do not agree with Gregg's
values).
Best regards,
Rich
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