Sinamics G120C three phase to Single phase

Hi all...

I have a small sinamics G120C for 0,75hp motor, and i want to use it for training purposes, with a small motor (0,18hp). but i not have three phase power in my laboratory. I would like to know if is possible use this inverter in a single phase instalation. just for training.

I know this is possible, because i made some trainings on Siemens Sitrain Brazil, and they use some kits in this configuration. I tried to contact then but they not have interest in help me

Like i told, is just for training, not for machine usage

Thanks

Siemens SITRAIN trainers use 1-phase to 3-phase drives, which are designed specifically for situations where 3phase power is not readily available.  Note this is generally for very small loads.

For larger loads, consider a 1-phase to 3-phase UPS.  It's basically a VFD with fixed output frequency (50 or 60 Hz typically).

You can also search online for 1 to 3 phase conversion to see if there are training purpose friendly hacks that would still be safe in a training context (but may not be appropriate for reliable industrial applications).

lost_alone

Hi all...

I have a small sinamics G120C for 0,75hp motor, and i want to use it for training purposes, with a small motor (0,18hp). but i not have three phase power in my laboratory. I would like to know if is possible use this inverter in a single phase instalation. just for training.

I know this is possible, because i made some trainings on Siemens Sitrain Brazil, and they use some kits in this configuration. I tried to contact then but they not have interest in help me

Like i told, is just for training, not for machine usage

Thanks

thanks for the information friend. The only information from sitrain to me is, "there is a voltage duplicator inside the kit" I think is a very small solution because the kit is very small too

I will try to find other solution for this in the internet

If someone knows something to help me i appreciate

thanks

The attached circuit is using 'strapping', to produce a DC Voltage double that of the AC 230 Volt input.

The output is DC at some 640 Volts, connect this to two of the phase terminals of the inverter input, and also set Parameter P210 to its highest Voltage, 480Volts from memory.

This will be suitable for low power motors, if the load is too great the supply will collapse. It is possible that a pre charge circuit would be a beneficial modification, not something I put in however.

This works for Micromaster and Sinamics drives as demo units, I will leave you to interpret this circuit as safe to use in your application.

N.b. The caps are Electrolytic.

Tractor

thaks dear friend,

i attached the circuit again, so please check the polarity of the capacitors, if it's right

thanks for the information

Last question. i have here in my lab some capacitors, 470mf x 400 volts. can i use this?

Hi friend,

I made the circuit, and Works perfect!

Thanks so much for your attention

Thanks for the feedback

Tractor