JasonPAtkins
Hot Rolled
- Joined
- Sep 30, 2010
- Location
- Guinea-Bissau, West Africa
After some reading, I think I'm ok to use a control transformer as a general purpose one (please correct me if I'm wrong).
My application from the other thread is to transform 400v to 110v to power my U.S. power tools and tool battery chargers.
I've purchased this: SIEMENS 4AM5941-8BE40-0C 7.35KVA TRANSFORMER PRI. 190-550 SEC. 110-240V | eBay
I only need about 1.5kva of 110v capacity, but the nameplate on most of the control transformers I was looking at were all like this one, in that they list a capacity, a slash, and then another about 6x the first. (1.6 / 7.35kva in this case)
Is the first a continuous rating? If so, what about the second? Maybe "you can go this high for only a few seconds" limit? Perhaps the second is if you're actively cooling, and can keep heat out of it, it can take that much juice?
This question seems so basic (because this characteristic seems to exist on almost all control transformers) that I assumed I could find an answer on google - but it must be so obvious to everyone else that no one has ever bothered writing down the answer, haha, because I couldn't find anything!
My application from the other thread is to transform 400v to 110v to power my U.S. power tools and tool battery chargers.
I've purchased this: SIEMENS 4AM5941-8BE40-0C 7.35KVA TRANSFORMER PRI. 190-550 SEC. 110-240V | eBay
I only need about 1.5kva of 110v capacity, but the nameplate on most of the control transformers I was looking at were all like this one, in that they list a capacity, a slash, and then another about 6x the first. (1.6 / 7.35kva in this case)
Is the first a continuous rating? If so, what about the second? Maybe "you can go this high for only a few seconds" limit? Perhaps the second is if you're actively cooling, and can keep heat out of it, it can take that much juice?
This question seems so basic (because this characteristic seems to exist on almost all control transformers) that I assumed I could find an answer on google - but it must be so obvious to everyone else that no one has ever bothered writing down the answer, haha, because I couldn't find anything!