How to connect the 2Y connection of the motor winding and the 2 angle connection

The 2Y connection method is to specify the sub-winding to be connected in parallel for two channels, (2Y is to connect two sets of coils in parallel) for six lead-out wires, 380V, YY connection. It is often used in rat dragon asynchronous two-speed pole changing motor.

The y-connection method is a set of coils per phase. It is used for ordinary rat dragon asynchronous motor below 3kw.

The 2Y connection method is to specify the sub-winding to be connected in parallel for two channels, (2Y is to connect two sets of coils in parallel) for six lead-out wires, 380V, YY connection. It is often used in rat dragon asynchronous two-speed pole changing motor.

I really know some about the motor winding connection, 2Y connection and 2 angle connection are all wiring methods of motor winding.

Let's talk about the 2Y connection method first, which is also called the two-way star connection. In this connection, each winding of the motor is divided into two parts, which are connected to different phase wires. Specifically, one end of the motor winding is connected to U2, V2, and W2, and the other end is directly grounded on the motor housing.

The result of this is that the voltage in each winding becomes the phase voltage, and the current in the three windings becomes the line current.

Then there is the 2-angle joint, also known as the triangle joint. In this connection, each winding of the motor is connected to each of the other windings of the motor, forming a closed triangle. Specifically, the U1 and V1, U2 and V2, W1 and W2 of the motor are connected together, and then the U, V, and W phases are connected to the power supply respectively.

As a result of this, the voltage in each winding becomes a line voltage, and the current in the three windings becomes a phase current.

2Y and Y are connected in the same way, except that Y is a set of coils per phase, 2Y is two groups of coils in parallel, and 2 angles and angles are also the same, the difference is that one group of coils becomes two sets of coils.

Illustrate with this diagram.

1) After shorting U2, V2 and W2, U1, V1 and W1 are connected to the power supply respectively, which is 2Y connection;

No, regardless of connection or Y connection, the three-phase winding in the motor stator is embedded in the wire according to a certain law, the connection line, and the 6 wires drawn out are connected or Y-connected in the outer binding post, and the composition of the connection or Y connection is only the abstract embodiment of the three-phase winding.

Three-phase winding embedded wire and connection line diagram in the motor stator:

The wiring method of the motor needs to be determined according to the specific situation, and the double Y wiring cannot be directly changed to a single corner wiring under normal circumstances. The double Y wiring method means that the two coils of the motor are connected to the two phases of the power supply respectively, and this nuclear bench method can make the motor produce higher starting torque and higher speed. The single angle wiring method is to connect one end of the two coils together to form an intersection point, and then connect this intersection point to a phase of the power supply, so that the motor produces lower starting torque and lower speed.

If you need to change the wiring of the motor from double Y to single angle, you will need to reconnect the coil of the motor. Please note that before making any changes to the wiring of the motor, always disconnect the power supply and ensure that you have sufficient electrical knowledge and skills to avoid electric shock or other safety issues. If you're not sure how to change how your motor is wired, ask a professional electrical engineer or technician for help.

Dear, I am Kobayashi's high-quality answerer, this question is answered by me: Yes, the motor double Y connection to 1 corner connection does not affect the operation of the motor, but to ensure that the wiring size is appropriate, the thickness of the insulated armor is reasonable, and the Y interface compression force should be set appropriately. In addition, it is necessary to check the liquid and the potato check cable is firmly connected, which can affect the overload and burnout of the motor.

Hope this answer helps!

Hello dear, the answer to your question is: Yes, but it is not recommended to change the motor from two Y-shaped wires to one corner wire. Double Y-wiring is a more common way to wiring three-phase motors, which can bring better motor performance and more stable operation.

If you want to change the wiring to a corner, you will need to change the wiring inside the motor, which may cause damage or deterioration of the motor, and may also affect the safety of the power grid. Therefore, it is recommended to carry out the motor wiring operation under the guidance of a professional.