How to connect a three-phase motor to 220 V
How to connect an asynchronous (6 outputs) motor to a 220V network. This electric motor is connected to a 220V consumer network using a delta connection. This means the motor can be connected to either 380V or 220V.
Here's the continuation: • Реверс электродвигателя, ПНВС и вопросы по... 1. Reversing a three-phase asynchronous motor. 2. PVNS starting device. 3. Frequency converter (positives and negatives). 4. Nuances of selecting capacitors for an electric motor. 5. Sparking at the contacts.
The motor cannot spin up without assistance; it needs a capacitor. This capacitor is called a "working capacitor." It's large and not very cheap, and its capacitance is selected from tables or calculated using formulas. It's important to remember that a significantly overestimated capacitance not only increases the cost of the system but can also damage the motor. But it often happens that the motor needs to start under a significant load—for example, it needs to spin three rollers and a belt stretched over them, in addition to its own shaft. And then it turns out that the run capacitor alone can't do this.
That's where a starting capacitor comes in. It's smaller and cheaper, but it doesn't last long; it's designed to operate only during startup. However, its capacity is approximately twice that of the run capacitor. It could spin the motor alone, but it would get very hot and quickly fail.
Therefore, to help it start, all that's needed is a momentary button that opens the starter circuit immediately after startup.
So, the two capacitors accelerate the motor, and only the run capacitor maintains speed.
It turns out that we need a control panel consisting of two elements: a switch and a start button.
Thanks to my viewers who shared these details, and good luck to everyone who needs to connect their electric motors to a 220-volt network!