The exposure limits according to the ICNIRP depends on frequency, of course.
>From 1hz to 300hz the Occupational limits are like 20kV/m for E-Field and
40k to 200uT.
>From 3khz to 10Mhz the limit is 170V/m (100uT). For the General Public (up
to 24 hours a day), the limit is 83V/m (27uT).
For
The EM field exposure limits are not always in standards: in Europe they
are in a European Council document based on Commission-funded research
(ICNIRP). I don't recall any limits as low as 10 V/m.
On 2023-07-27 19:07, Richard Nute wrote:
I’m a product safety engineer. This discussion is
.”
--
Ken Javor
(256) 650-5261
From: Richard Nute
Reply-To:
Date: Thursday, July 27, 2023 at 1:07 PM
To:
Subject: Re: [PSES] Woodgate's reply on residential Immunity field strength
I’m a product safety engineer. This discussion is based upon a safety standard
specifying a limit
I'm a product safety engineer. This discussion is based upon a safety
standard specifying a limit for the accessible electric field strength.
Doug Smith said:
"These days we think 10 V/m is dangerous."
See:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3553569/
From: "doug emcesd.com"
Reply-To: "doug emcesd.com"
Date: Tuesday, July 25, 2023 at 6:53 PM
To:
Subject: Re: [PSES] Woodgate's reply on residential Immunity field strength
Hi All,
My observation is that a cell phone at max power, close to the product,
generates v
ontent.com/_HuR3Ky2TF_XhFHyxnYRmiq7nHQldnMsPNYFaLG6kb5T4y8MeCe-BDC_BscJtSFgszSSjssihHS-pjM3-jwNP8S0CwE-gN8fsRsPkojiAlmpBwb20vIVizS-siCUywW_jqrefbVr]
From: Charlie Blackham
Sent: Tuesday, July 25, 2023 0:06
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Woodgate's reply on residential Immunity field strength
The residential lev
://sulisconsultants.com/
Registered in England and Wales, number 05466247
From: Brian Gregory
Sent: Monday, July 24, 2023 10:49 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Woodgate's reply on residential Immunity field strength
The reference for 20 V/m to EV chargers comes from UL 2231-2
to:he...@unit3compliance.co.uk> or call
01274 911747. Our lead times for testing and consultancy are typically 4-5
weeks.
From: Brian Gregory
Sent: Monday, July 24, 2023 10:49 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Woodgate's reply on residential Immunity field str
Yes. The standards need to allow for possibilities.
I have about a 3 dB gain antenna that is about a meter away from the
charger port. It transmits about 15 watts at 144.39 MHz to send out an APRS
position packet. I recently bought a PHEV, although my 2 minute timer is
not yet installed, but
at 5:03 PM
To:
Subject: Re: [PSES] Woodgate's reply on residential Immunity field strength
There are, but 20 V/m still is a very high value. One wouldn't expect a
transmitter to be used in a car while it is on charge.
On 2023-07-24 22:57, Jim Bacher, WB8VSU wrote:
Wi-Fi and cell phones
While the vehicle is on charge or vey near a charger?
On 2023-07-24 23:12, Jim Bacher, WB8VSU wrote:
John, I have transmitter that transmits on a VHF Frequency about 2
minutes after I shut the car off. A number of setups allow a person to
use a hand held device to access a higher powered
John, I have transmitter that transmits on a VHF Frequency about 2 minutes
after I shut the car off. A number of setups allow a person to use a hand
held device to access a higher powered transceiver that is in the car. It's
fairly common setup for highway patrol vehicles, due to distance from
to use round numbers).
--
Ken Javor
(256) 650-5261
From: Brian Gregory
Reply-To: Brian Gregory
Date: Monday, July 24, 2023 at 4:49 PM
To:
Subject: Re: [PSES] Woodgate's reply on residential Immunity field strength
The reference for 20 V/m to EV chargers comes from UL 2231-2
There are, but 20 V/m still is a very high value. One wouldn't expect a
transmitter to be used in a car while it is on charge.
On 2023-07-24 22:57, Jim Bacher, WB8VSU wrote:
Wi-Fi and cell phones are not the only transmitters near cars. There
are police, fire and ham radio transceivers in
Wi-Fi and cell phones are not the only transmitters near cars. There are
police, fire and ham radio transceivers in cars. Some of which are on gain
antennas and can be remotely accessed to transmit. Not to mention hand held
transceivers that might walk by.
Jim, WB8VSU
On July 24, 2023
The reference for 20 V/m to EV chargers comes from UL 2231-2. This is not a
medical standard, but Annex A does call out the medical standard 60601-1-2 as a
reference, as well as CENELEC 50204. We can't figure out why; cell phones
produce less than half that, and our WiFi transmitter is
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