| Products > Test Equipment |
| Where can I get a 3-phase AC signal generator? |
| << < (5/6) > >> |
| Stray Electron:
Ben, You don't show where you're from but take a look at some of the Elgar AC Power Sources. These generally sell cheaply because very few people understand them or have a need for one. They are available with single phase or three phase outputs (and with a single phase input!) and up to 260 volts. Depending on the plugin, they're either fixed frequency or can be variable frequency (up to 10khz IIRC). The output voltage is also variable. The 251 models can output up to 250 VA and the 501 models up to 500 VA and there are larger models. Be warned though that these are beasts! They're a full rack mount size and even the lightest one weighs nearly 100 pounds and the biggest ones are MUCH bigger and heavier. Brochures, installation and operator manuals, repair info and other docs are available on line. I currently have five of these. I was able to get several of mine from local surplus dealers for a song since they're too heavy to ship with major headaches and no one else wanted them so I got two for scrap metal prices and the others were just given to me. If you're in the US or other major country, go on E-bay and see what's available. Then search for the nearest to you. If you can go pick one up in person you can probably get one for < $100. Also be aware that most dealers list the specification of THE particular unit that they're trying to sell. Often a fixed frequency unit or a single phase output only model. You need to look at the factory specs of the Power Source to see what their actual capabilities are and also look and the specs of the various plug ins that can be used with the Power Source. |
| artag:
I have a single-phase mains source by Chroma that allows adjustment of frequency and voltage. They also do a 3-phase source : https://www.chromausa.com/product/3-phase-programmable-ac-source-61700/ Warning : I have found Chroma unhelpful regarding information about their older products. |
| Stray Electron:
I've never had to contact Elgar so I don't know how helpful they would be but I've played with about 10 or 12 of their units that were surplused and every one of them worked and I've been able to find manuals online for everything that I've looked for. Their stuff seems to be built like a brick outhouse and just never fails. I've seen other brands of AC Power Sources (I have a Pacific Scientific) but they're harder to find and there doesn't seem to be much documentation on them so I just stick to the Elgar brand and recommend them. If you've got the room to keep one; the variable voltage, variable frequency, and up to three output phases, AC sources can be dammed handy at times! If anyone is looking for one, there's currently one on that auction site that the seller is asking $160 for. He says that it doesn't work but the plug in that he has in it is meant to be driven by another unit so that's probably why it isn't working. I expect someone could buy it for a lot less than the asking price, especially if they could pick it up in person and save the seller the headache of packing and shipping it. |
| james_s:
I have a similar unit made by California Instruments. Mine is only single phase but they made 3 phase versions too. They are essentially a big linear audio amplifier with a step-up transformer on the output. The thing is very heavy and makes a lot of noise but it's handy to have around at times. |
| rvalente:
As usual http://feeltech.net/ is down, but IRC they have a triple output AWG FY8300 and FY8400 |
| Navigation |
| Message Index |
| Next page |
| Previous page |