Where to get Fluke spares..surge protectors.

Question

To complete repairs of a Fluke 23 I now only require some "1500 V surge protectors". That's what the BOM on the Fluke 70 series service manual calls them. Though on the 23 model one of them is actually 2 in series.

These are red, about 5mm dia x 4mm. markings are

H NI

1399

They look like old Harris or GE MOV's.

The other one is yellow, 8x8x5mm, has a sawn slit half way through it and has markings

MDC

1-2KV
9143

Any clues where to get similar ones at least? Farnell, Digikey and RS don't appear to go that high in voltage choices.

Phil Allison · Accepted Answer

To complete repairs of a Fluke 23 I now only require some "1500 V

** Then MOVs are what the probably are.

Farnell have 7mm MOVs in 460 Vrms or 750 VDC @ 1mA - so two of them gives you 1500 VDC.

Cat: 100-4346 for $1.21+

** Then that is no MOV - it is a spark gap.

Not likely to need replacement - just a clean.

..... Phil

geoffjunkster · Answer

themThat looks like the nearest thing around. I'll grab some.OK.. so I had a close look inside the gap and spied a tiny bit of gritthere. Cleaned with some shim, now the resistance shows megohm insteadof ohms. I will get a new one, but replace for now.

Phil Allison · Answer

OK.. so I had a close look inside the gap and spied a tiny bit of grit there. Cleaned with some shim, now the resistance shows megohm instead of ohms. I will get a new one, but replace for now.

** Very hard to find anyone selling such spark gaps.

Might be easier to extract one from the neck PCB of an old CRT monitor - look out for one in the nature strip fodder.

.... Phil

TT · Answer

Still getting your parts from road verge collection junk eh Philthy? :-))  Had any more Quad gear, toasters or Sony CDP101s lately?TT :-))

Mik DaDik · Answer

You might find some in old `junk box' PC power supplies...Cu

Franc Zabkar · Answer

On Tue, 30 Sep 2008 19:18:44 -0700 (PDT), snipped-for-privacy@gmail.com put finger to keyboard and composed:

Fluke's supplier code for that part is 91984.

This URL suggests that "MDC" is "MAIDA DEVELOPMENT CO":

formatting link

This is MDC's web site:

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9143 appears to be a YYWW date code.

- Franc Zabkar

geoffjunkster · Answer

Good find Franc, cant see spark gaps on their site yet though.

Where to get Fluke spares..surge protectors.

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