You're asking for data showing that fuses work?
Yes... Data that shows that in this case, with the fuse that would be fitted by Weller, that is large enough that it would not cause nuisance fuse opens under normal operation in the long term at the usual 110-130 volts you see in North America, would always protect the transformer and not allow any smoke to escape when powered from 220-250 volts 50 Hz.
As far as the fuse blowing out of nuisance, I guess you have never heard of time delay fuses or resettable PTC's.
Not needed. Weller makes 110V soldering irons with fuses and nobody seems to be reporting that they're constantly blowing.
As far as the fuse blowing out of nuisance, I guess you have never heard of time delay fuses or resettable PTC's.
Not needed. Weller makes 110V soldering irons with fuses and nobody seems to be reporting that they're constantly blowing.
I don't argue that UL was performed well and a lot of products are UL conform.
I am just saying, a fuse is much better than an UL melting approved and specified procedure.
well when I was living there in US, in the one of my friend house this:
showed up in front of his home. My friend had to sayto them "sorry, it was just a toaster". They were not happy and replied:" Next time you pay".
Since I love to cook, I often triggered the smoke alarm with wine or alcohol vaporated in a pan. I was surprised why no firetruck were showing up in my case.
Then I discover there was a faulty in the fire alarm sistem and my home was not radio connected with the firefighter station.
I assumed then all US fire alarm system should trigger a fire fighter truck close to the home.
Otherwise a smoke detector is there just for a beep-beep?
I am not an expert but is seems not enough for me. In my home I want the fire fighter running at full speed to my address in case of fire.
For everyone defending Weller: Why has the more expensive Weller stations a fuse on the primary side if it isn't needed?
My Goodman AC system has no fuse between 240V and its control xfmr. It costed me $5000 to install, and it came with a defective defrost controller board, and the new board has been ordered for a week and I still haven't seen it. As a result, I'm burning electricity on heating strips to keep myself from freezing.
Proudly made in USA.
even if a resettable primary side fuse had failed to save the transformer from damage.
it would still have saved the lab from fire. had it been a careless operator that panicked! did not disconnect the unit from the power source & just bolted out of the room, a failsafe, is a sign of a quality product IMO.
For everyone defending Weller: Why has the more expensive Weller stations a fuse on the primary side if it isn't needed?
Why do more expensive cars have more safety features than cheaper ones?
For everyone defending Weller: Why has the more expensive Weller stations a fuse on the primary side if it isn't needed?
Why do more expensive cars have more safety features than cheaper ones?Because they are not required by law and it is cheaper to not include them.
For everyone defending Weller: Why has the more expensive Weller stations a fuse on the primary side if it isn't needed?
For everyone defending Weller: Why has the more expensive Weller stations a fuse on the primary side if it isn't needed?
Why do more expensive cars have more safety features than cheaper ones?Because they are not required by law and it is cheaper to not include them.
Same reason why a soldering station doesn't include it.
Voltage doesn't enter into it. The fuse would be matched to the wire in the transformer.
Voltage doesn't enter into it. The fuse would be matched to the wire in the transformer.
Lets's say you put a 0.75A fuse in there. How does the fuse know the difference between 90 watts (at 120 volts) being drawn, most of which is going into the actual iron element while it is heating, versus 180 watts (at 240 volts, which is still 0.75A) being dissipated solely by the primary winding of the transformer in a fault or mishap condition?
For everyone defending Weller: Why has the more expensive Weller stations a fuse on the primary side if it isn't needed?
Why do more expensive cars have more safety features than cheaper ones?Because they are not required by law and it is cheaper to not include them.
Same reason why a soldering station doesn't include it.... and it shows how Weller values its customers.
What makes you think that the soldering station will draw twice the power with twice the voltage?
You can blow up stuff with 1W of power with the right conditions.
That would be a feat. Please explain.
Actually, you can choke on your muffin for 0W.It could be plugged into an IEC plug, so 16A and 240V could go into the box
You have 3800W available in a standard outlet shape? That's a bit worrisome. At least the iron would suffer a quicker, more humane death.
For everyone defending Weller: Why has the more expensive Weller stations a fuse on the primary side if it isn't needed?
Why do more expensive cars have more safety features than cheaper ones?
You are missing a parameter, when the iron in the transformer is saturated the current is not just slightly higher, it is much higher.
I do not have a 120VAC transformer around or I could do a curve of current vs. voltage.
You are missing a parameter, when the iron in the transformer is saturated the current is not just slightly higher, it is much higher.
That is a reasonable assumption, however it may or may not be true. That depends on exactly when that particular transformer design saturates, etc. Not all transformers will blow up instantly just because you connected them to 50 Hz instead of 60 Hz, or stuck twice the voltage across the primary, although most certainly some will be very unhappy in one or both of those cases.
QuoteI do
not have a 120VAC transformer around or I could do a curve of current vs. voltage.
Just taking any ol' transformer and showing a curve doesn't tell us anything about how this one behaves. I have plenty of transformers around here that are intended to run on 120V but will work fine with a 240V input. I have plenty more that would definitely go try to go thermonuclear.
the unit draws more than the breaker's rated current fow a while. That means a lot more time overheating, release smoke, and a lot more chances for it to set into fire.
You can blow up stuff with 1W of power with the right conditions.
That would be a feat. Please explain.
Actually, you can choke on your muffin for 0W.
I am just saying, a fuse is much better than an UL melting approved and specified procedure.