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Author Topic: FLUKE 8845A 8846A Current Input Fuse Self-Test  (Read 3000 times)

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Online Kiriakos GR

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FLUKE 8845A 8846A Current Input Fuse Self-Test
« on: January 30, 2025, 11:24:11 AM »
Fluke corporation in most of their DMM it does deliver this somewhat of generic advice, as Current Input Fuse Self-Test.

With the Meter powered up, plug a test lead into the V/Ohm/diode connector (banana plug).

At testing of 400 mA input, If the fuse is good, the Meter will read less than 200 Ohm.
At testing of 10 A input, If the fuse is good, the Meter will read less than 1 Ohm.

 
(My own question which does not find an answer, this is if FLUKE 8845A 8846A, them are able to detect a deteriorated Fuse?)

For the owners of 8845A & 8846A, I will add reference images of what actually my DMM measures at both tests.
Luckily I did find another photograph in China of 8846A, at 10A test, but the digital camera took an incomplete photograph.  :P

My plan is this topic to become a holder of statistics, but I cannot do that alone, we need the input from several users.
Even so I will make the first step, and at my next message I will deliver actual measurements due my own DMM.
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Offline Andrew-88

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Re: FLUKE 8845A 8846A Current Input Fuse Self-Test
« Reply #1 on: January 30, 2025, 06:37:42 PM »
(My own question which does not find an answer, this is if FLUKE 8845A 8846A, them are able to detect a deteriorated Fuse?)

According to this topic https://www.ittsb.eu/forum/index.php?topic=1380.0 I do not believe that the DMM alone is capable to do that. 

Especially at two wire measurement mode.

Online Kiriakos GR

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Re: FLUKE 8845A 8846A Current Input Fuse Self-Test
« Reply #2 on: February 01, 2025, 01:34:24 PM »
Just for statistics ..

10 A Input this tested for 3 minutes      =  0,11891 Ohm   01/02/ 2025  16:15:37
440 mA Input this tested for 3 minutes =  102,1622 Ohm   


In both tests, 50 centimeter banana to banana, 2.5mm pure copper wire.
   
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