What are the differences and differences between the triangle connection and the star connection of

It must be different, when the star connection method, each phase voltage is 380V and the 2-phase winding is connected in series, and the resistance is large and the current is small. In the shape connection method, the voltage of each phase is 380V, and the winding works in one phase, and the resistance is small and the current is large. The power of the motor will increase if the triangular solution is adopted.

According to the formula of asynchronous motor motor speed and frequency.

n=60f/p

In the above formula. n - the speed of the motor** minutes);

60 – per minute (seconds);

f - power supply frequency (Hezhi);

p – the number of pole pairs of the motor's rotating magnetic field.

Because the number of pole pairs of the motor is determined by the frequency of the alternating current used, the rotational speed is constant.

Friend, the same motor uses a triangle connection.

The delta connection is to supply 380 volts, and the star connection is to use 660 volts. The rotational speed and power consumption are the same, and nothing changes.

No matter what the connection method, the motor speed remains the same, and it is the power supply frequency and the number of poles of the motor that affect the speed. Y-shaped connection, each phase winding bears a voltage of 220V. Shape jointing method, each phase winding bears a voltage of 380V. The energy consumption is the same.

What is the difference between the star connection and the triangle connection of the motor?

The difference between the star connection and the triangle connection of the three-phase motor rotated145532

1. The difference between windings:

The star connection and the triangle connection method both refer to the winding connection method of the motor itself, and the star connection method refers to the three-phase end of the motor winding together, and the three-phase head end is the power supply end; The triangle connection refers to the connection of the three-phase windings end to end, and the three endpoints are the power supply ends.

2. The difference in power:

Due to the small output power, the star connection method is often used for small power, large torque motors, or large power motors at the beginning, so that the loss of the machine is small, and the triangle connection is used after normal operation.

3. The difference in voltage:

The phase voltages output by the star and triangle connections are 220V and 380V respectively.

Summary. Hello, sir, in the rated voltage of 380V running three-phase asynchronous motor, the speed of the triangle connection and the star connection can be regarded as the same, the power difference is very large, for example, the triangle connection is a 10kw motor, running under the star, its power is only about 1 3 of the triangle. However, the power is equal to operate at 380*.

Hello, sir, in the rated voltage of 380V running three-phase asynchronous motor, the speed of the triangle connection and the star connection can be regarded as the same, the power difference is very large, for example, the triangle connection is a 10kw motor, running under the star, its power is only about 1 3 of the triangle. However, the power is equal to operate at 380*.

Hello sir, for a factory three-phase asynchronous motor, its speed is determined by the power supply frequency, the conversion connection only changes the voltage of the motor winding, so the speed can reach the same in the no-load state, the load state is not the same, the heavier the load, the slower the speed.

Three-phase asynchronous motor delta connection and star connection power and speed is the same, in the rated voltage of 380V running three-phase asynchronous motor, triangle connection and star connection speed can be regarded as the same, the power difference is very large, for example, triangle connection for 10kw motor, running under the star, its power is only about 1 3 of the triangle. However, the power is equal to operate at 380*. Hope it helps.

Three-phase asynchronous motors are divided into two types: star link and angular link.

Star connection: The three ends of the three-phase coil of the motor are connected together as the common end, and the three live wires are connected from the three heads. (For example, the A phase coil is represented by AX, the B phase coil is represented by BY, and the C phase coil is represented by CZ, that is, X and Y are connected with Z to lead to three wires of A, B, and C).

Triangular connection: The connection method that connects the beginning of the windings of each phase of the three-phase coil of the motor in turn. (For example, phase A coil is represented by AX, phase B coil is represented by by, and phase C coil is represented by CZ, that is, X is connected to B, Y is connected to C, Z is connected to A, and the three wires drawn out are BX, CY, and AZ).

The three-phase winding of the motor is completely connected to the end cover, there are six heads in the end cover, the three heads below are connected together, and the three heads above are connected to the star connection of three wires respectivelyThe upper and lower heads are connected vertically, and the three lines are drawn out separately is a triangular connection.

No matter which connection method, the line voltage and line current are the same, so the active power is p=

The difference is the current and voltage of the coil winding, and when the star is connected, the voltage through which the coil passes is 220V (phase voltage), which is only a multiple of the line voltage, and is characterized by low voltage and large current. When connected in a triangle, the voltage through which the coil passes is 380V, which is characterized by high voltage and low current.

As follows:

First, the advantages of the two are different:

1. The advantages of star connection (i.e., star connection): it helps to reduce the winding withstand voltage (220V) and reduce the insulation level.

2. The advantages of the angle joint (that is, the triangle joint code shouting method): it helps to improve the power of the motor, and the disadvantage is that the starting current is large and the winding withstand voltage (380V) is large. The insulation level has been increased.

Second, the role of the two is different:

1. The function of the star connection: the starting current is reduced. The disadvantage is that the motor power is reduced. Therefore, most of the low-power motors below 4kw adopt the star connection, and the triangle connection method is used for those larger than 4kw.

2. The function of the corner joint: the insulation level is increased.

Third, the overview of the two is different:

1. Overview of star connection: star connection is a wiring method for three-phase AC power supply and three-phase electrical appliances. The ends of the three windings of the three-phase power supply, X, Y, and Z are connected together to become a common point O, and three end wires are drawn from the beginning A, B, and C.

It is a pre-mold system in which three sinusoidal power supplies with the same frequency, equal amplitude and 120° phase difference are connected to supply power to the outside in a certain way.

2. Overview of angular connection: The triangle connection method is to connect each phase power supply or load end to end in turn, and lead out each connected point as the three phase wires of three-phase electricity. Because the shape of the wiring resembles a triangle, this connection method is called a triangle connection.