Thank you all for your help on repairing my 5100B.
I am totally blown away by your willingness to help and your knowledge!
I am really green with this instrument and appreciate your input. I now have
replacement part numbers as well as a way to determine what the values should
be.
Thanks to all!
They are MOVs. They protect the Guard circuit to chassis and outguard DC
supply.
Tom
- Original Message -
From: "David McQuate"
To:
Sent: Thursday, March 13, 2014 2:41 PM
Subject: Re: [volt-nuts] Fluke 5100B Calibrator†Repair Help
Question: are the vaporized parts varistors (u
Hi Dave,
It looks like these are just 68 volt GE MOVs.
MFR Code is 09214 - GE
Fluke Part 460394
GE part V68MA3A
It limits the voltage from the guard circuit to chassis ground. The unit
limit is 20 V pp from the front panel.
Should not be too critical.
Regards,
Tom
- Original Messag
Question: are the vaporized parts varistors (usually put in series for
inrush current limiting) or MOVs (placed in shunt to limit transient
peak voltages)? My comments concerned the former...
Dave
On 3/13/2014 8:34 AM, David Smith wrote:
I need some help with repairing a Fluke 5100B Calibrat
Dave wrote:
I need some help with repairing a Fluke 5100B Calibrator. * * *
According to the manual's parts list these varistors are in-house
parts by Fluke.
How hard did you look? According to the 5100B manual on Fluke's web
site (PN 926634, October 1992, Rev.1 1/94), they are GE
Estimate the steady-state maximum current (eg from the unit's normal
mains current) then search Digikey for "inrush current limiters".
Select values near or a little greater than your estimated mains
current in the 6th list-box (select multiple values), titled "Current -
Steady State Max", an
Are they the ones on page 7-12 in the service manual?
http://www.ko4bb.com/manuals/index.php?dir=Fluke
Dallas
On 3/13/2014 12:34 PM, David Smith wrote:
I need some help with repairing a Fluke 5100B Calibrator.
The capacitor support bracket fell into the power supply module and vaporized
both
Try calling 510 651 5112. They were Fluke repair for 5100B, (EECS Fremont
ca)
On Thu, Mar 13, 2014 at 9:34 AM, David Smith wrote:
> I need some help with repairing a Fluke 5100B Calibrator.
> The capacitor support bracket fell into the power supply module and
> vaporized both varistors, RV1 and
Someone will most likely have an exact value, but assuming that RV1 and RV2 are
being used as excessive transient voltage protection another way to determine
value is to use a variac to power up the 5100B and measure the normal voltages
at RV1 and RV2. Then replace with a properly rated MOV.
T
I need some help with repairing a Fluke 5100B Calibrator.
The capacitor support bracket fell into the power supply module and vaporized
both varistors, RV1 and RV2. A call to Fluke tells me they no longer can supply
these MOV's. According to the manual's parts list these varistors are in-house
I have a 332 that was unused on a shelf for 25-30 years. Together with a
Guildline 4 cell standard, a 720, 845 and a ESI KV divider. (and more) I use
the guildline and 720 to set the 332.,Then set a 731 as a control to check
during calibration if one is changed. My 332 seems to be not bad but
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