ITTSB.EU Blog Forum
Multimeter | Clamp meter | Insulation Resistance Tester | Panel Meter | Oscilloscopes | Test leads & Accessories | Software Updates => Bench-top multimeter => Topic started by: Kiriakos GR on January 30, 2025, 11:24:11 AM
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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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(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 (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.
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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.