[volt-nuts] Fluke 5100B Calibrator‏ Repair Help

[Tom Miller]

They are MOVs. They protect the Guard circuit to chassis and outguard DC 
supply.

Tom

----- Original Message ----- 
From: "David McQuate" <mcquate at sonic.net>
To: <volt-nuts at febo.com>
Sent: Thursday, March 13, 2014 2:41 PM
Subject: Re: [volt-nuts] Fluke 5100B Calibrator‏ Repair Help


> 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 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 parts by Fluke. I have no way of determining a 
>> substitute part. Is there anyone that can help me identify what could be 
>> a useful replacement?
>> Thanks,
>> Dave - W6TE    _______________________________________________
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>
> -- 
> Clear Stream Technologies
>
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