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Author Topic: Help With Kenwood TL922A Fuses  (Read 4702 times)
W6SDM
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Posts: 4




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« on: July 24, 2012, 10:54:04 AM »

I am having trouble finding fuses for my TL-922A. They are 15A 240V TD (time delay) fuses but the size is a little different than the typical AGC fuse. They are about 7/16ths by 1-1/2 inches. I have looked thought the manual and the service manual and the best I could get is the Kenwood part number, which doesn't mean anything to an electronics supplier.

I have found plenty of fuses with that electrical value, but nothing in that size. It would help if I knew the size code that went with that and I could go to Newark or Granger and probably find them.

Thanks in advance for your help. If you want to contact me direct, I am at steve@w6sdm.net.
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W8JX
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« Reply #1 on: July 24, 2012, 11:05:47 AM »

There should be a part number and brand name on them.
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W6SDM
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« Reply #2 on: July 24, 2012, 11:12:24 AM »

That would make my life entirely too easy.

The only markings are an upside down triangle,  a TD in a box, which I believe is for time delay, 250V 15A.  That's it.

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W8JX
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« Reply #3 on: July 24, 2012, 11:46:00 AM »

That's not good. I would suggest accurately measuring them and then looking them up on line with Buss or the like for a part number.  Somebody made them.
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KI6SZ
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Posts: 21




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« Reply #4 on: July 24, 2012, 11:54:38 AM »

Try a Cooper Bussmann KLM-15 fuse.  Be prepared for sticker shock!

Mouser usually stocks them. 
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K7KBN
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Posts: 2788




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« Reply #5 on: July 24, 2012, 12:13:27 PM »

Have you asked the Kenwood folks?  Also, by Googling that Kenwood part number, I came up with a link to another eHam thread in the Elmers section:

http://www.eham.net/ehamforum/smf/index.php?action=printpage;topic=18770.0

Maybe this'll help.
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73
Pat K7KBN
CWO4 USNR Ret.
KE3WD
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Posts: 5694




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« Reply #6 on: July 24, 2012, 01:27:50 PM »

I am having trouble finding fuses for my TL-922A. They are 15A 240V TD (time delay) fuses but the size is a little different than the typical AGC fuse. They are about 7/16ths by 1-1/2 inches. I have looked thought the manual and the service manual and the best I could get is the Kenwood part number, which doesn't mean anything to an electronics supplier.

I have found plenty of fuses with that electrical value, but nothing in that size. It would help if I knew the size code that went with that and I could go to Newark or Granger and probably find them.

Thanks in advance for your help. If you want to contact me direct, I am at steve@w6sdm.net.

When you encounter a fuse with those kinds of dimensions (large) -- don't expect to find it in an electronics parts catalog inventory. 

The type TD fuse is industrial strength. 

You want a bigtime electrical supply house:   

http://www.elliottelectric.com/Products/Detail.aspx?v=BUS&c=FNW15

http://www.globalindustrial.com/p/electrical/fuses/class-cc/ferrazshawmut-model-atdr15-600v-15a-cc-td-fuse

Now that you know aht you are looking for and where to look, check your local yellow pages listings and call the electrical supply houses near you, chances are good that at least one of 'em will be stocking these. 

Oh -- and save yourself some money by not simply popping the new and expensiver fuses in there just to watch 'em blow again.  Connect a 100W lightbulb into the fuseholders for each side and bring the darn thing up slow on a variac.  If the bulbs glow real bright, something in the amp is shorted, don't go any further until that short is found and corrected. 


73
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K6AER
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Posts: 3506




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« Reply #7 on: July 24, 2012, 04:38:29 PM »

Use Radio Shack microwave oven 20 Amp 240 Volt fuses. They are white ceramic.
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KE3WD
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Posts: 5694




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« Reply #8 on: July 25, 2012, 01:26:57 PM »

Use Radio Shack microwave oven 20 Amp 240 Volt fuses. They are white ceramic.

Sorry, but this is a wrong answer. 

Radio Shack does not carry any fuses that are 7/16" in diameter. 

It is also not advisable to place a 20 Amp fuse in service where the spec calls for 15 Amp fuse. 

The Radio Shack "microwave oven" fuses are all either same size as 3AG or some are the "mini" fuse type, neither is large enough to fit this fuseholder and none are type TD. 


73
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W7VO
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Posts: 195


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« Reply #9 on: July 25, 2012, 02:28:32 PM »

I don't think that people are noticing that the fuse he is looking for is 0.40 inches in diameter, not a standard 0.25 inch as a normal 3AG size fuse we are all used to....... Looking at other threads from Google, it appears that not many correct answers are out there..  Smiley

I wonder if this will work? :

http://www.cooperindustries.com/content/dam/public/bussmann/Edison/Resources/Data%20Sheets/Bus_Edison_DS_EDCC_1300.pdf

It is a time delay fuse, as the original, and is about the right size. This is from the Cooper Bussman website, and the part number would be EDCC15. As others have said, it may be available from an industrial electrical supply house....

Good luck with your search!

73;

Mike, W7VO
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KB1LKR
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Posts: 1899




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« Reply #10 on: July 25, 2012, 05:55:48 PM »

That would be 1 1/2" L x 13/32" Dia (38.1 mm x 10.3 mm or 38 mm x 10 mm)
Type 5AG, 500V or 600v vs. only 250V rated.

Mouser has them, but they are not cheap as fuses go.
http://www.mouser.com/Circuit-Protection/Fuses/_/N-5g3l?P=1z0s75uZ1yzrwslZ1yzseu4Z1yzsepfZ1yzseqeZ1yzseteZ1z0s1tm&Keyword=fuses&FS=True

Looks similar in size to the (FAST) 600V fuse used in Fluke's DVM's.

See also:
http://www.cooperindustries.com/content/dam/public/bussmann/Electrical/Resources/Data%20Sheets/Bus_Ele_DS_1012_FNQ.pdf

http://www.cooperindustries.com/content/dam/public/bussmann/Electrical/Resources/Data%20Sheets/Bus_Ele_DS_1023_LP-CC.pdf

http://www.littelfuse.com/~/media/Files/Littelfuse/Technical%20Resources/Documents/Data%20Sheets/ClassCC.pdf
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KE4DRN
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Posts: 3721




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« Reply #11 on: July 25, 2012, 06:04:55 PM »

hi,

how about the Buss FNM-15, you can get
them at any home depot.

http://www.cooperindustries.com/content/dam/public/bussmann/Electrical/Resources/Data%20Sheets/Bus_Ele_DS_2028_FNM.pdf

73 james
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KB1LKR
Member

Posts: 1899




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« Reply #12 on: July 25, 2012, 07:03:15 PM »

James nailed it! Cooper Bussmann FNM-15 is 250V rated, a lot less pricy than their FMQ-15 500V version!
If Home Depot (and Lowes?) that should be easy.
Also:
W. W. Grainger (1CT81)
Mouser (504-FNM-15)
McMaster-Carr (7706K25)
even Amazon.com (B000HOQV5W)
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KE3WD
Member

Posts: 5694




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« Reply #13 on: July 26, 2012, 01:38:13 PM »

This is getting ridiculous.

Look: 

13/32"  =  0.40625" 

The OP stated that the measured diameter of the fuse needed is 7/16".

7/16"  =  0.4375" 

He may be able to bend the holder contacts in a bit to accomadate the 13/32", 0.40625 fuses mentioned here, though.

Or perhaps his given diameter dimension was not a good measurement to begin with...

73
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KB1LKR
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Posts: 1899




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« Reply #14 on: July 26, 2012, 07:50:21 PM »

perhaps!
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