Hi Randy,
I've been using my 80K6 HV probe quite successfully and safely for
measuring HV in KW amp power supplies. Do follow the instructions, and my
policy
is to set everything up, make the connections, and then turn on the supply.
Take all of the usual precautions to make sure HV is ALL the way down,
unplug, use bleeders and a chickenstick, then measure the voltage to make sure
it's down to zero before disconnecting.
I believe the concern is that this kind of probe can be used for measuring
PS voltages at amateur levels, but should not be used for measuring MV
voltages on AC lines (14.4 KV, with no fuses or breakers to protect you.)
I'm speaking from limited personal experience only, and this should not be
taken as gospel...perhaps one of the more serious HV guys could comment
further, so please no lawsuits!
I am reminded of this video, though...I know it's been referenced here
before, but I had to go look again.
_http://www.glumbert.com/media/highpower_
(http://www.glumbert.com/media/highpower)
Don't use your Fluke probe here.
Steve
Steve Gilbert
K1SG
K1SG@AOL.com
In a message dated 1/26/2011 5:27:00 P.M. Eastern Standard Time,
amps-request@contesting.com writes:
Message: 4
Date: Wed, 26 Jan 2011 16:25:58 -0500
From: "Randall, Randy" <Randy.Randall@uchealth.com>
Subject: [Amps] Measuring amp B+
To: "amps@contesting.com" <amps@contesting.com>
Message-ID:
<5CBCD439080F744F966BB2815C060775021F7ABC530B@MAIL-B.healthall.com>
Content-Type: text/plain; charset="us-ascii"
Hello all,
I have on the way a Fluke 80K-6 HV probe. It is only rated to CAT I and
from the text below it may not be suitable for measuring the B voltage of a
linear amp esp. one with a large filter cap. Should I be using something
rated CAT III?
The 80K-6 is a high voltage probe designed to extend the voltage measuring
capability of an AC/DC voltmeter to 6000 volts peak AC or DC Overvoltage
Category I. This means the probe can only be used to make measurements on
energy limited circuits within equipment. Examples include high voltage
within televisions or photo copy machines.
Thanks
Randy AB9GO
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