Could you please direct me to a video, or a website on how to hook these up in as safe a way as possible? I have four potential transformers that I've collected over the last 15 years, three having double bushings and one (my 7200 volt ABB) having a single bushing. I also have a single variable current limiting reactor that an old friend gave me from his neon sign shop 20 years ago. I used it to hook up a 10 kVA 14,400 volt distribution transformer back then, but did no calculations on how much current it would draw. Being young, and maybe a little dumb, I simply placed the reactor in series with the 240 volt input and hooked directly into mains. I seem to remember it drawing 100 amps when pulling a high voltage arc, but that may have been with the steel core pulled all the way out of the inductor. Being a little older, I'd like to be a little safer this time. :-) Using a BK LCR meter, I've measured the impedance of the reactor at 20 ohms (LCR meter in series mode). Measuring inductance and DC resistance of the reactor, I calculate the impedance of the reactor to be around 13 ohms. I would be using that reactor with a STACO 0-140 volt, 3.5 KVA variable transformer (not sure of its impedance) to power my 7200 volt ABB from the wall on a 20 amp breaker. What do you think? Is it a stupid move?
@@metersocket00 It didn't turn out to be much of a problem. I just measured the inductance of my current limiting reactor using a BK 879B, used that value to calculate inductive reactance at 60 Hz, and then used reactance and DC resistance to calculate an impedance of around 12 ohms. Using Ohm's Law at 120 volts, that works out to around 10 amps of current draw. I then used a variac to dead short the reactor and confirm a 10 amp current draw. Now I'm getting out some sweet arcs from the few PT's I've collected over the years. It's a variable reactor, so it can limit current from 10 amps (calculated & confirmed) to 70 amps (only calculated by measurements with the core removed). I may post a video in the future. Thanks for leaving me to figure it out on my own. It actually turned into a fun little exercise. Cheers!
I go to Solomon electric Corp. Then put in the specs under request quote tab. Was about $325 for 5kva before all this covid and inflation. Best regards.
@@metersocket00 Don't worry. Hope you're doing well. Things are getting busy for me right now. I need to get a CDL soon so I can work with a line crew hopefully.
Just imagine u knew rhat you only get the lower voltage on the tag and bought the right transformer from the start. You could have made a self starting Jacobs ladder a long time ago
I have a 120 to 240V transformer with its LV coil inline with 2 smaller transformers from a microwave oven. The MOT’s are kept on a short circuit. Limits the current to approximately 60 amps, then plug the circuit into a standard wall outlet. Trips the breaker quite quickly.
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
finally i found someone who likes high voltage and fire alarms
Could you please direct me to a video, or a website on how to hook these up in as safe a way as possible? I have four potential transformers that I've collected over the last 15 years, three having double bushings and one (my 7200 volt ABB) having a single bushing. I also have a single variable current limiting reactor that an old friend gave me from his neon sign shop 20 years ago. I used it to hook up a 10 kVA 14,400 volt distribution transformer back then, but did no calculations on how much current it would draw. Being young, and maybe a little dumb, I simply placed the reactor in series with the 240 volt input and hooked directly into mains. I seem to remember it drawing 100 amps when pulling a high voltage arc, but that may have been with the steel core pulled all the way out of the inductor. Being a little older, I'd like to be a little safer this time. :-) Using a BK LCR meter, I've measured the impedance of the reactor at 20 ohms (LCR meter in series mode). Measuring inductance and DC resistance of the reactor, I calculate the impedance of the reactor to be around 13 ohms. I would be using that reactor with a STACO 0-140 volt, 3.5 KVA variable transformer (not sure of its impedance) to power my 7200 volt ABB from the wall on a 20 amp breaker. What do you think? Is it a stupid move?
I will aim to upload a video of how to wire one in the near future. Best Regards!
@@metersocket00 It didn't turn out to be much of a problem. I just measured the inductance of my current limiting reactor using a BK 879B, used that value to calculate inductive reactance at 60 Hz, and then used reactance and DC resistance to calculate an impedance of around 12 ohms. Using Ohm's Law at 120 volts, that works out to around 10 amps of current draw. I then used a variac to dead short the reactor and confirm a 10 amp current draw. Now I'm getting out some sweet arcs from the few PT's I've collected over the years. It's a variable reactor, so it can limit current from 10 amps (calculated & confirmed) to 70 amps (only calculated by measurements with the core removed). I may post a video in the future. Thanks for leaving me to figure it out on my own. It actually turned into a fun little exercise. Cheers!
@@Julius314159 what specs are your PTs and how much do they weigh? Are they oil filled or resin cast?
Where can I get pole mount transformers without working for the utility company
I go to Solomon electric Corp. Then put in the specs under request quote tab. Was about $325 for 5kva before all this covid and inflation. Best regards.
@@metersocket00 Thanks brother, appreciate it 🤛
Man you need a dedicated circuit for this. Looks like new acquisitions to your transformers, what now 7 pole transformers? Cool video!
Thank you for the comment, have around 9 of them now all different voltages. Best regards!
My apologies for the long delayed reply, this covid situation has turned my career in a 180 and have been very busy.
@@metersocket00 Don't worry. Hope you're doing well. Things are getting busy for me right now. I need to get a CDL soon so I can work with a line crew hopefully.
Just imagine u knew rhat you only get the lower voltage on the tag and bought the right transformer from the start. You could have made a self starting Jacobs ladder a long time ago
So many pole pigs! I need to get me one of those monsters! Do they make 5kVA pigs?
I would have to assume so
Yes, I go to Solomon electric for them, was $350 before covid, probably over $1000 now.
How do you power those transformers lol
I have a 120 to 240V transformer with its LV coil inline with 2 smaller transformers from a microwave oven. The MOT’s are kept on a short circuit. Limits the current to approximately 60 amps, then plug the circuit into a standard wall outlet. Trips the breaker quite quickly.
Sup firetech didnt expect to see you here