Capacitor for asynchronous motor 1.1 kW?

Question

Electronics

Hello!
It has an asynchronous motor.
Parameters on the photo: It is


necessary to run from the mains 220 Volts, one phase.

I rummaged through the entire Internet, it is not clear by what formula to select a working capacitor.
According to one calculation, 55 microfarads comes out, according to others 104 microfarads. There is a considerable run-up ...

There are experts on which working capacitor to put in order for everything to work fine?

Answer 1

According to one calculation, 55 microfarads comes out, according to others 104 microfarads. Big run...

Normal calculation for this engine. 104 uF is starting, 55 uF is working.
The launcher can be turned off by a timer, you can find rubles for 300 on a DIN rail. The frequency converter will be significantly more expensive. Well, the efficiency will drop by 20%.

Answer 2

Because with such a power, two capacitors are already needed - a working and a starting one, as well as a thermal relay to turn off the starting one.
Two capacitors, a relay for disconnecting the starting capacitor, a contactor for starting the engine, an automatic motor for protecting the engine, a push-button post, a cabinet to pack it all - runs into several thousand.
It's better to put a Chinese inverter for this money.

Answer 3

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