When I was young, we didn't need no "fancy" soldering sticks. Heat came in 4 models. The extreme heavy duty, the heavy duty, the medium and the last for fine 0402 work.
If you lost heat change the tank, or plug it in. If you lost a tip, just make one up out of a #00 round copper buss bar, #10 or #12 wire. She'll be good as new.
When I was young, we didn't need no "fancy" soldering sticks. Heat came in 4 models. The extreme heavy duty, the heavy duty, the medium and the last for fine 0402 work.
If you lost heat change the tank, or plug it in. If you lost a tip, just make one up out of a #00 round copper buss bar, #10 or #12 wire. She'll be good as new.
The good old 8200 soldering gun makes a few kV at the tip when you switch the trigger off! ZZzzzzt.
I killed a lot of solid-state electronics before realizing that one. The soldering gun is not earth-grounded and uses that solenoid-style transformer with tons of leakage inductance.
Never use one on modern electronics. A-OK for vacuum tube stuff
As with companies like Weller, they sell units that are barely changing for many years, despite technology evolved a lot (and recent amazing chinese soldering stations dave reviewed prove that), so Weller still have sales just because of their past reliability and reputation.Link?
All those security standards assume a fault either in the transformer itself or downstream!
There is no way to protect the transformer of all upstream failure cases.
Just imagine they added a fuse. What should the voltage rating of the fuse be? 150V, 300V, 1kV? Also what should the interruption capability be, a few dozen ampere, 25kA? All those choices assume some upstream components (for example a defined maximum voltage, the maximum current the upstream breaker allows for a short time etc. everything defined in countless standards.)
All those assumptions do not apply when the device is connected to the wrong grid.
Should it also withstand to be connected to 15kV 16 2/3 Hz Bahnstrom and fail safely?
So you should search for the standard applied to the wiring which allowed 240V on a 120V device in the first place.
IMHO the connector is the root of all evil in this case.
Those old Weller guns also
Weller WES51 transformer is a different bird at 40VA. Previously a custom Tyco part, 4000 series 4000-01E07G827, Tyco 2-1611453-5, Class II UL1585. Get this from Tyco:
"Inherently Energy Limited Transformers - Class II transformers up to 50 VA are “Inherently Limited” which means that the transformer, if overloaded, will short itself out and fail safely, not requiring a fuse."
Looking at IEC 61558 Transformer Safety, Part 15 on short-circuit testing and considering the WE1010 is almost twice the power 80-100VA would be a "non-inherently short-circuit proof transformer".
Both IEC 61558 and UL 1585 wrap the transformer in tissue/cheesecloth for the overload, heating, short-circuit (fire) tests, with 16A or 20A mains feed.
Confusion with the Class 2 "doorbell" transformers seems to also plague the safety standard.
These are energy-limited output by impedance or external secondary fusing, used for doorbells, zone valves etc.
Condo fire after a cable staple shorted out the 24VAC wiring and I found the transformer had improper secondary fusing. I had to design a replacement panel for that.
Closest thing in the US would be plugging this into a 240/277vac receptacle which is very different than 120v recp and unlikely in most residences. Even in a lab setting, I assume these are rare and would clearly stand out. Anyone even make a US 240v -> IEC cord? NEMA 6-20P looks close to NEMA 5-20P but I'm guessing they cannot be interchanged. So at least here, it seems it would take some real stupidity or a shared neutral circuit failure (as someone mentioned earlier) to bring on this fault. The NEMA receptacles typically prevent this nonsense. As bigclive calls it, a "death dapter" could certainly bypass NEMA designs, but that's still something that has to be a unicorn just thinking about the 240/277v recps I can think of.
So is a US vs international safety standard issue? Does Weller sell this model in areas where 220/110v issue may really be a problem?
Closest thing in the US would be plugging this into a 240/277vac receptacle which is very different than 120v recp and unlikely in most residences. Even in a lab setting, I assume these are rare and would clearly stand out. Anyone even make a US 240v -> IEC cord? NEMA 6-20P looks close to NEMA 5-20P but I'm guessing they cannot be interchanged. So at least here, it seems it would take some real stupidity or a shared neutral circuit failure (as someone mentioned earlier) to bring on this fault. The NEMA receptacles typically prevent this nonsense. As bigclive calls it, a "death dapter" could certainly bypass NEMA designs, but that's still something that has to be a unicorn just thinking about the 240/277v recps I can think of.
So is a US vs international safety standard issue? Does Weller sell this model in areas where 220/110v issue may really be a problem?
Here's a US 240V to IEC C13 power cord for you:
https://www.amazon.com/NEMA-6-20P-C13-Power-Cord/dp/B004WJNVH4
If your bench has both 120V and 240V outlets and you've got any 240V only kit with an IEC C14 inlet, then there's a real risk of a mishap if you ever disconnect multiple items to move them, clean behind them etc.
If I had IEC C13 leads in a US dual voltage environment, I think I'd spray paint all the 240V C13 ends bright red!
> IEC C14
Exactly. IEC failure, safety standards, etc.
Seems IEC is a bit too standard or the safety standards don't reflect the potential issues properly. Wax on, wax off with the mains fuse aside.
Pointing blame at weller for selling a US specific model then somehow it gets exported...its their fault the product is placed in a condition it was never designed for. Bit overkill IMO. Fuse is cheap enough, so it seems silly to omit. If they sell it world wide, shame on them for not adding a fuse. Again, what are the real safety standards in this case??
If its a US only product, the chances of this happening are extremely low IMO. Even at that, a class 2 limited trany as far as I have seen will put on a spectacular smoke show without fire. So where really is the failure that allows for this? Why is the primary fuse a choice is my question.
I have to wonder why IEC power cords are all different on one end- but not the other.
I have to wonder why IEC power cords are all different on one end- but not the other.
It's so that manufacturers don't have to worry about making 12 different versions of their product. They put one standard plug, and you supply the cable. (paying close attention to voltages of course). I thought that was pretty obvious
if the intent of the plug design is to prevent miss-connection
But then, I do not know the real reason why the plug designs are different
a standard connector as such should require the device to take all possible power supplies
@ 10:32
There's the fuse.
a standard connector as such should require the device to take all possible power suppliesI guess in North America people just don't treat others like they're children, or stupid. They don't like nanny governments and like to take responsibility for themselves. After all, it's only 120V, so the worst case is you get a little tickle. If YOU use lethal voltage where you live, that's your problem. It's up to YOU not to kill yourself.
Barrel jacks have the same shape with many different voltages. Do we really need 50,000 different connectors for everything? (don't answer that)
Also, 120V is more than enough to cause a cardiac arrest, not a tingle.