CN204578422U - Three phase alternating current motor general adjustment phase sequence device - Google Patents

Abstract

The utility model relates to a kind of three phase alternating current motor general adjustment phase sequence device, phase sequence can be adjusted at secure region operation, it comprises operating case and terminal box, its technical essential is: the action button SB1 ~ SB3 described operating case being provided with indicator light, the wherein side of terminal box is provided with terminals U, V, W, opposite side is provided with terminals U1, V1, W1, is provided with some contactors controlled by action button SB1 ~ SB3 between terminals U, V, W and U1, V1, W1; Time only when SB1 action or when SB1, SB3 action, the phase sequence that U1, V1, W1 are corresponding is V, U, W; Only when SB2 action, the phase sequence that U1, V1, W1 are corresponding is V, W, U; When SB3 action or SB1 ~ SB3 attonity, the phase sequence that U1, V1, W1 are corresponding is U, V, W; When SB2, SB3 action, the phase sequence that U1, V1, W1 are corresponding is W, U, V; When SB1, SB2 action, the phase sequence that U1, V1, W1 are corresponding is W, V, U; When the equal action of SB1 ~ SB3, the phase sequence that U1, V1, W1 are corresponding is U, W, V.

Description

Three phase alternating current motor general adjustment phase sequence device

Technical field

The utility model relates to a kind of phase sequence adjusting device, particularly relates to a kind of three phase alternating current motor general adjustment phase sequence device.

Background technology

Three phase alternating current motor has six kinds of phase sequences, driver needs phase sequence correctly could control motor operation, may need repeatedly to adjust the motor line of force order of connection and just can find correct phase sequence in debug process, in the debug process of some special occasions, cannot by touching connection box for motor adjustment phase sequence, field adjustable is very difficult, if the personal safety of misoperation also entail dangers to commissioning staff.

Authorization Notice No. is the utility model patent of CN201508799Y, disclose " a kind of electric vacuum isolated phase change switch with Manual isolation switch ", this technical scheme relates generally to a kind of commutation device, by electrically-operated arrangement to realize the break-make of dynamic/static contact in vacuum tube, thus connecting and disconnecting of the circuit phase sequence is changed.But its structure is too complicated, and can only commutate, range of application is narrow.

Authorization Notice No. is the utility model patent of CN202888043U, disclose " a kind of single-phase, three phase electric machine universal safety two-direction switch ", this technical scheme relates generally to a kind of commutation device, it is made up of shell, movable contact unit, moving contact positioner and fixed contact body, sound point body is fixed in rotating shaft, and rotating shaft upper end is provided with handle, when pull handle clockwise or be rotated counterclockwise certain angle time, moving contact contacts with middle fixed contact, thus reaches the object changing phase sequence.But adopt which poor stability, under hot line job state, easy arcing, even causes personal injury to operating personnel, and phase sequence instruction is not obvious.

For the recognition methods of phase sequence, Authorization Notice No. is the utility model patent of CN101539601B, disclose " a kind of three-phase alternating current phase sequence testing circuit ", it comprises the waveform limiter shaping circuit alternating current of input being carried out to waveform shaping, with circuit of testing the phase sequence sequential being carried out to logic control, from the threephase switch pulse signal of waveform transformation circuit transistor, be connected to A, B, two between C three-phase waveform limiter shaping circuit and phase sequence control circuit D types in parallel are just along CLK end and the reset terminal of trigger, and the high level of its cycle period output chronologically or low level are delivered to the judging phase order transistor of phase sequence output control circuit.This technical scheme by the two D type of a parallel connection just along trigger output switch pulse signal and a judging phase order transistor, the existence of detection of dynamic three-phase, thus solve the problem detecting three phase mains and may occur phase sequence mistake and phase shortage.

Utility model content

The purpose of this utility model is to provide a kind of device that can adjust phase sequence at secure region operation, the utility model is removed after finding correct phase sequence, connect the motor line of force according to correct phase sequence again, the work of adjustment phase sequence can be completed fast, and ensure that the personal safety of field adjustable personnel.

The technical scheme that the utility model adopts is: this three phase alternating current motor general adjustment phase sequence device comprises operating case and terminal box, its technical essential is: the action button SB1 ~ SB3 described operating case being provided with indicator light, the wherein side of terminal box is provided with terminals U, V, W, opposite side is provided with terminals U1, V1, W1, is provided with some contactors controlled by action button SB1 ~ SB3 between terminals U, V, W and U1, V1, W1; Time only when SB1 action or when SB1, SB3 action, the phase sequence that U1, V1, W1 are corresponding is V, U, W; Only when SB2 action, the phase sequence that U1, V1, W1 are corresponding is V, W, U; When SB3 action or SB1 ~ SB3 attonity, the phase sequence that U1, V1, W1 are corresponding is U, V, W; When SB2, SB3 action, the phase sequence that U1, V1, W1 are corresponding is W, U, V; When SB1, SB2 action, the phase sequence that U1, V1, W1 are corresponding is W, V, U; When the equal action of SB1 ~ SB3, the phase sequence that U1, V1, W1 are corresponding is U, W, V.

Wherein a kind of control circuit of terminal box is that described terminal box comprises contactor KM1, KM2 and KM3, and wherein contactor KM1 comprises normally-closed contact K switch M1a and KM1c, normally opened contact K switch M1b and KM1d; Contactor KM2 comprises normally-closed contact K switch M2a and KM2c and KM2e, normally opened contact K switch M2b and KM2d and KM2f; Contactor KM3 comprises normally-closed contact K switch M3a and KM3c and KM3e, normally opened contact K switch M3b and KM3d and KM3f;

Normally-closed contact K switch M1a, normally-closed contact K switch M2a are set between terminals U1 and U, normally-closed contact K switch M1c, normally-closed contact K switch M2c are set between terminals V1 and V, normally-closed contact K switch M2e is set between terminals W1 and W, between normally-closed contact K switch M1a upper contact and normally-closed contact K switch M1c lower contact, normally opened contact K switch M1b is set, normally opened contact K switch M1d is set between normally-closed contact K switch M1a lower contact and KM1c upper contact, normally opened contact K switch M2b is set gradually between normally-closed contact K switch M2a upper contact and normally-closed contact K switch M2c lower contact, normally-closed contact K switch M3a, normally opened contact K switch M2d is set gradually between normally-closed contact K switch M2c upper contact and normally opened contact K switch M2b lower contact, normally-closed contact K switch M3c, normally opened contact K switch M3b, with normally opened contact K switch M3b while of normally-closed contact K switch M2e lower contact, the lower contact of normally-closed contact K switch M3c is connected, the upper contact of normally opened contact K switch M3b and the lower contact of normally opened contact K switch M2b, the upper contact of normally-closed contact K switch M3a is connected simultaneously, normally opened contact K switch M2f, normally-closed contact K switch M3e is set gradually between the upper contact of normally-closed contact K switch M2e and the lower contact of normally-closed contact K switch M2a, the upper contact of normally opened contact K switch M3f is connected with normally opened contact K switch M2f lower contact, the lower contact of normally opened contact K switch M3f is connected with the lower contact of normally-closed contact K switch M2c, and the lower contact of normally opened contact K switch M3d is connected with the lower contact of normally-closed contact K switch M3e, the lower contact of normally-closed contact K switch M2a simultaneously, the upper contact of normally opened contact K switch M3d is connected with the lower contact of normally opened contact K switch M2d, the upper contact of normally-closed contact K switch M3c simultaneously, contact switch KM1a ~ the KM1d of contactor KM1 is controlled by the break-make of coil KM1 by button SB1, contact switch KM2a ~ the KM2f of contactor KM2 is controlled by the break-make of coil KM2 by button SB2, and the contact switch KM3a ~ KM3f of contactor KM3 is controlled by the break-make of coil KM3 by button SB3.

The another kind of control circuit of terminal box is that described terminal box comprises contactor KM1, K2, KM2, K3 and KM3, and wherein contactor KM1 comprises normally-closed contact K switch M1a and KM1c, normally opened contact K switch M1b and KM1d; Contactor K2 comprises normally opened contact K switch 2a, K2b and K2c; Contactor KM2 comprises normally opened contact K switch M2a, KM2b and KM2c; Contactor K3 comprises normally opened contact K switch 3a, K3b and K3c; Contactor KM3 comprises normally opened contact K switch M3a, KM3b and KM3c;

Normally-closed contact K switch M1a, normally opened contact K switch 2a are set between terminals U1 and U, normally-closed contact K switch M1c, normally opened contact K switch 2b are set between terminals V1 and V, normally opened contact K switch 2c is set between terminals W1 and W, between normally-closed contact K switch M1a upper contact and normally-closed contact K switch M1c lower contact, normally opened contact K switch M1b is set, between normally-closed contact K switch M1a lower contact and normally-closed contact K switch M1c upper contact, normally opened contact K switch M1d is set, normally opened contact K switch M2a is set gradually between normally opened contact K switch 2a upper contact and normally opened contact K switch 2b lower contact, normally opened contact K switch 3a, normally opened contact K switch M2b is set gradually between normally opened contact K switch 2b upper contact and normally opened contact K switch M2a lower contact, normally opened contact K switch 3b, normally opened contact K switch M3a, with normally opened contact K switch M3a while of normally opened contact K switch 2c lower contact, the lower contact of normally opened contact K switch 3b is connected, the upper contact of normally opened contact K switch M3a simultaneously with the lower contact of normally opened contact K switch M2a, the upper contact of normally opened contact K switch 3a is connected, normally opened contact K switch M2c is set gradually between the upper contact of normally opened contact K switch 2c and the lower contact of normally opened contact K switch 2a, normally opened contact K switch 3c, the upper contact of normally opened contact K switch M3c is connected with normally opened contact K switch M2c lower contact, the lower contact of normally opened contact K switch M3c is connected with the lower contact of normally opened contact K switch 2b, the lower contact of normally opened contact K switch M3b simultaneously with the lower contact of normally opened contact K switch 3c, the lower contact of normally opened contact K switch 2a is connected, the upper contact of normally opened contact K switch M3b simultaneously with the lower contact of normally opened contact K switch M2b, the upper contact of normally opened contact K switch 3b is connected, contact switch KM1a ~ the KM1d of contactor KM1 is controlled by the break-make of coil KM1 by button SB1, contact switch K2a ~ the K2c of contactor K2 and the contact switch KM2a ~ KM2c of contactor KM2 is controlled by the break-make of coil KM2 by button SB2, and the contact switch K3a ~ K3c of contactor K3 and the contact switch KM3a ~ KM3c of contactor KM3 is controlled by the break-make of coil KM3 by button SB3.

The beneficial effects of the utility model: simple to operate, use the contactor coil being manipulated break-make by control button, and then manipulation contact switch commutation circuit, each only needs can complete phase sequence adjustment by pressing a button, can find correct phase sequence five times to multioperation.Reflection correct phase sequence directly perceived, when button is pressed, it carries Push-button lamp and can light, and can intuitively understand current phase sequence.Ensure commissioning staff's personal safety, connect this device post debugging personnel and can complete phase sequence adjustment work in the place be perfectly safe by the button pressed in the utility model, this device is removed after finding correct phase sequence, connect the motor line of force according to correct phase sequence, guarantee the personal safety of commissioning staff in phase sequence adjustment process.

Accompanying drawing explanation

Fig. 1 is the surface structure schematic diagram of the utility model using state;

Fig. 2 is the structural representation of the utility model wherein a kind of circuit;

Fig. 3 is the structural representation of the another kind of circuit of the utility model.

Description of reference numerals: 1 operating case, 2 feed cables, 3 stube cables, 4 terminal boxes, 5 phase sequence question blanks.

Embodiment

Particular content of the present utility model is described in detail below in conjunction with Fig. 1 ~ 3.

Embodiment 1

As shown in Figure 1, this three phase alternating current motor general adjustment phase sequence device comprises operating case 1, feed cable 2, stube cable 3 and the parts such as terminal box 4, phase sequence question blank 5, wherein, feed cable 2 is arranged on operating case 1, feed cable 2 and 220VAC civil power are connected to device bulk supply, be connected by stube cable 3 between operating case 1 and terminal box 4, phase sequence question blank 5 is arranged on operating case 1.Operating case 1 sets gradually three button SB1 ~ SB3, in order to the state of instruction button also can adopt band button, carrying Push-button lamp when a button is pressed can light.During execute-in-place, find correct phase sequence by action button SB1 ~ SB3, then after consulting phase sequence question blank 5, the utility model device is removed, according to phase sequence question blank 5 correct phase sequence stube cable.The wherein side of terminal box is provided with terminals U, V, W, and opposite side is provided with terminals U1, V1, W1, is provided with some contactors controlled by action button SB1 ~ SB3 between terminals U, V, W and U1, V1, W1.Terminal box 4 middle connecting terminal U1, V1, W1 connect power supply power line, and binding post U, V, W connect the motor line of force.

Wherein a kind of control circuit of the present utility model as shown in Figure 2, normally-closed contact K switch M1a, normally-closed contact K switch M2a are set between terminals U1 and U, normally-closed contact K switch M1c, normally-closed contact K switch M2c are set between terminals V1 and V, normally-closed contact K switch M2e is set between terminals W1 and W, between normally-closed contact K switch M1a upper contact and normally-closed contact K switch M1c lower contact, normally opened contact K switch M1b is set, normally opened contact K switch M1d is set between normally-closed contact K switch M1a lower contact and KM1c upper contact, normally opened contact K switch M2b is set gradually between normally-closed contact K switch M2a upper contact and normally-closed contact K switch M2c lower contact, normally-closed contact K switch M3a, normally opened contact K switch M2d is set gradually between normally-closed contact K switch M2c upper contact and normally opened contact K switch M2b lower contact, normally-closed contact K switch M3c, normally opened contact K switch M3b, with normally opened contact K switch M3b while of normally-closed contact K switch M2e lower contact, the lower contact of normally-closed contact K switch M3c is connected, the upper contact of normally opened contact K switch M3b and the lower contact of normally opened contact K switch M2b, the upper contact of normally-closed contact K switch M3a is connected simultaneously, normally opened contact K switch M2f, normally-closed contact K switch M3e is set gradually between the upper contact of normally-closed contact K switch M2e and the lower contact of normally-closed contact K switch M2a, the upper contact of normally opened contact K switch M3f is connected with normally opened contact K switch M2f lower contact, the lower contact of normally opened contact K switch M3f is connected with the lower contact of normally-closed contact K switch M2c, and the lower contact of normally opened contact K switch M3d is connected with the lower contact of normally-closed contact K switch M3e, the lower contact of normally-closed contact K switch M2a simultaneously, the upper contact of normally opened contact K switch M3d is connected with the lower contact of normally opened contact K switch M2d, the upper contact of normally-closed contact K switch M3c simultaneously, contact switch KM1a ~ KM1d, KM2a ~ KM2f, KM3a ~ KM3f action simultaneously.

KM1a, KM1c are respectively as first, second normally-closed contact switch of contactor KM1, KM1b, KM1d are respectively as first, second normally opened contact switch of contactor KM1, and the contact switch KM1a ~ KM1d of contactor KM1 is controlled by the break-make of coil KM1 by control button SB1;

KM2a, KM2c, KM2e are respectively as the first, second, third normally-closed contact switch of contactor KM2, KM2b, KM2d, KM2f are respectively as the first, second, third normally opened contact switch of contactor KM2, and the contact switch KM2a ~ KM2f of contactor KM2 is controlled by the break-make of coil KM2 by control button SB2;

KM3a, KM3c, KM3e are respectively as the first, second, third normally-closed contact switch of contactor KM3, KM3b, KM3d, KM3f are respectively as the first, second, third normally opened contact switch of contactor KM3, and the contact switch KM3a ~ KM3f of contactor KM3 is controlled by the break-make of coil KM3 by control button SB3.

When pressing control button SB1, contactor coil KM1 is communicated with, contactor KM1 adhesive, and normally-closed contact K switch M1a, KM1c disconnect, normally opened contact K switch M1b, KM1d adhesive; When pressing control button SB2, contactor coil K2 disconnects, coil KM2 is communicated with, contactor KM2 adhesive, and normally-closed contact K switch M2a, KM2c, KM2e disconnect, normally opened contact K switch M2b, KM2d, KM2f adhesive; When pressing control button SB3, contactor coil K3 disconnects, coil KM3 is communicated with, contactor KM3 adhesive, and closed contact K switch M3a, KM3c, KM3e disconnect, normally opened contact K switch M3b, KM3d, KM3f adhesive.

Control button SB1 ~ the SB3 that is used to indicate that also can arrange as described in Example 2 manipulates status indicator lamp L1 ~ L3.

1), during initial condition, the corresponding phase sequence of U1, V1, W1 is U, V, W;

2) when SB1 action, KM1 adhesive, the corresponding phase sequence of U1, V1, W1 is V, U, W;

3) when SB1, SB2 action, KM1, KM2 adhesive, the corresponding phase sequence of U1, V1, W1 is W, V, U;

4) when SB2 action, KM2 adhesive, the corresponding phase sequence of U1, V1, W1 is V, W, U;

5) when SB2, SB3 action, KM2, KM3 adhesive, the corresponding phase sequence of U1, V1, W1 is W, U, V;

6) when SB1, SB2, SB3 action, KM1, KM2, KM3 adhesive, the corresponding phase sequence of U1, V1, W1 is U, W, V;

7) when SB1, SB3 action, KM1, KM3 adhesive, the corresponding phase sequence of U1, V1, W1 is V, U, W (identical with 2);

8) when SB3 action, KM3 adhesive, the corresponding phase sequence of U1, V1, W1 is U, V, W (identical with 1).

The contactor operate condition corresponding to control button state of table 1 embodiment 1 and alternating current machine phase sequence

After being connected with motor, replace push box button SB1, SB2, SB3 according to table 1, when motor runs well, be the phase sequence of three phase electric machine by the phase sequence corresponding to the open and-shut mode of observing button SB1, SB2, SB3.

Embodiment 2

External structure is with embodiment 1, the circuit structure of junction box as shown in Figure 3, normally-closed contact K switch M1a, normally opened contact K switch 2a are set between terminals U1 and U, normally-closed contact K switch M1c, normally opened contact K switch 2b are set between terminals V1 and V, normally opened contact K switch 2c is set between terminals W1 and W, between normally-closed contact K switch M1a upper contact and normally-closed contact K switch M1c lower contact, normally opened contact K switch M1b is set, between normally-closed contact K switch M1a lower contact and normally-closed contact K switch M1c upper contact, normally opened contact K switch M1d is set, normally opened contact K switch M2a is set gradually between normally opened contact K switch 2a upper contact and normally opened contact K switch 2b lower contact, normally opened contact K switch 3a, normally opened contact K switch M2b is set gradually between normally opened contact K switch 2b upper contact and normally opened contact K switch M2a lower contact, normally opened contact K switch 3b, normally opened contact K switch M3a, with normally opened contact K switch M3a while of normally opened contact K switch 2c lower contact, the lower contact of normally opened contact K switch 3b is connected, the upper contact of normally opened contact K switch M3a simultaneously with the lower contact of normally opened contact K switch M2a, the upper contact of normally opened contact K switch 3a is connected, normally opened contact K switch M2c, normally opened contact K switch 3c is set gradually between the upper contact of normally opened contact K switch 2c and the lower contact of normally opened contact K switch 2a, the upper contact of normally opened contact K switch M3c is connected with normally opened contact K switch M2c lower contact, the lower contact of normally opened contact K switch M3c is connected with the lower contact of normally opened contact K switch 2b, and the lower contact of normally opened contact K switch M3b is connected with the lower contact of normally opened contact K switch 3c, the lower contact of normally opened contact K switch 2a simultaneously, the upper contact of normally opened contact K switch M3b is connected with the lower contact of normally opened contact K switch M2b, the upper contact of normally opened contact K switch 3b simultaneously, contact switch KM1a ~ KM1d, K2a ~ K2c, KM2a ~ KM2c, K3a ~ K3c, KM3a ~ KM3c action simultaneously.

KM1a, KM1c are respectively as first, second normally-closed contact switch of contactor KM1, KM1b, KM1d are respectively as first, second normally opened contact switch of contactor KM1, and the contact switch KM1a ~ KM1d of contactor KM1 is controlled by the break-make of coil KM1 by control button SB1;

KM2a, KM2b, KM2c are respectively as the first, second, third normally opened contact switch of contactor KM2, K2a, K2b, K2c are respectively as the first, second, third normally opened contact switch of contactor K2, and contact switch K2a ~ K2c, KM2a ~ KM2c are controlled by the break-make of coil KM2 by control button SB2;

KM3a, KM3b, KM3c are respectively as the first, second, third normally opened contact switch of contactor KM2, K3a, K3b, K3c are respectively as the first, second, third normally opened contact switch of contactor K3, and contact switch K3a ~ K3c, KM3a ~ KM3c are controlled by the break-make of coil KM3 by control button SB3.

When pressing control button SB1, contactor coil KM1 is communicated with, contactor KM1 adhesive, and indicator light L1 is communicated with, and normally-closed contact K switch M1a, KM1c disconnect, normally opened contact K switch M1b, KM1d adhesive; When pressing control button SB2, contactor coil K2 disconnects, coil KM2 is communicated with, contactor KM2 adhesive, and indicator light L2 is communicated with, and normally opened contact K switch 2a, K2b, K2c disconnect, normally opened contact K switch M2a, KM2b, KM2c adhesive; When pressing control button SB3, contactor coil K3 disconnects, coil KM3 is communicated with, contactor KM3 adhesive, and indicator light L3 is communicated with, and normally opened contact K switch 3a, K3b, K3c disconnect, normally opened contact K switch M3a, KM3b, KM3c adhesive.

1) during initial condition, K2, K3 adhesive, the corresponding phase sequence of U1, V1, W1 is U, V, W;

2) when SB1 action, KM1, K2, K3 adhesive, the corresponding phase sequence of U1, V1, W1 is V, U, W;

3) when SB1, SB2 action, KM1, KM2, K3 adhesive, the corresponding phase sequence of U1, V1, W1 is W, V, U;

4) when SB2 action, KM2, K3 adhesive, the corresponding phase sequence of U1, V1, W1 is V, W, U;

5) when SB2, SB3 action, KM2, KM3 adhesive, the corresponding phase sequence of U1, V1, W1 is W, U, V;

6) when SB1, SB2, SB3 action, KM1, KM2, KM3 adhesive, the corresponding phase sequence of U1, V1, W1 is U, W, V;

7) when SB1, SB3 action, KM1, KM3 adhesive, the corresponding phase sequence of U1, V1, W1 is V, U, W (identical with 2);

8) when SB3 action, KM3 adhesive, the corresponding phase sequence of U1, V1, W1 is U, V, W (identical with 1).

Embodiment 2 contactor turntable corresponding to table 2 control button state and alternating current machine phase sequence

After being connected with motor, replace push box button SB1, SB2, SB3 according to table 2, when motor runs well, be the phase sequence of three phase electric machine by the phase sequence corresponding to the open and-shut mode of observing button SB1, SB2, SB3.

Claims (3)

1. a three phase alternating current motor general adjustment phase sequence device, comprise operating case and terminal box, it is characterized in that: setting operation button SB1 ~ SB3 on described operating case, the wherein side of terminal box is provided with terminals U, V, W, opposite side is provided with terminals U1, V1, W1, is provided with some contactors controlled by action button SB1 ~ SB3 between terminals U, V, W and U1, V1, W1; During when SB1 action or when SB1, SB3 action, the phase sequence that U1, V1, W1 are corresponding is V, U, W; Only when SB2 action, the phase sequence that U1, V1, W1 are corresponding is V, W, U; When SB3 action or SB1 ~ SB3 attonity, the phase sequence that U1, V1, W1 are corresponding is U, V, W; When SB2, SB3 action, the phase sequence that U1, V1, W1 are corresponding is W, U, V; When SB1, SB2 action, the phase sequence that U1, V1, W1 are corresponding is W, V, U; When the equal action of SB1 ~ SB3, the phase sequence that U1, V1, W1 are corresponding is U, W, V.

2. three phase alternating current motor according to claim 1 general adjustment phase sequence device, it is characterized in that: described terminal box comprises contactor KM1, KM2 and KM3, wherein contactor KM1 comprises normally-closed contact K switch M1a and KM1c, normally opened contact K switch M1b and KM1d; Contactor KM2 comprises normally-closed contact K switch M2a and KM2c and KM2e, normally opened contact K switch M2b and KM2d and KM2f; Contactor KM3 comprises normally-closed contact K switch M3a and KM3c and KM3e, normally opened contact K switch M3b and KM3d and KM3f;

Normally-closed contact K switch M1a, normally-closed contact K switch M2a are set between terminals U1 and U, normally-closed contact K switch M1c, normally-closed contact K switch M2c are set between terminals V1 and V, normally-closed contact K switch M2e is set between terminals W1 and W, between normally-closed contact K switch M1a upper contact and normally-closed contact K switch M1c lower contact, normally opened contact K switch M1b is set, normally opened contact K switch M1d is set between normally-closed contact K switch M1a lower contact and KM1c upper contact, normally opened contact K switch M2b is set gradually between normally-closed contact K switch M2a upper contact and normally-closed contact K switch M2c lower contact, normally-closed contact K switch M3a, normally opened contact K switch M2d is set gradually between normally-closed contact K switch M2c upper contact and normally opened contact K switch M2b lower contact, normally-closed contact K switch M3c, normally opened contact K switch M3b, with normally opened contact K switch M3b while of normally-closed contact K switch M2e lower contact, the lower contact of normally-closed contact K switch M3c is connected, the upper contact of normally opened contact K switch M3b and the lower contact of normally opened contact K switch M2b, the upper contact of normally-closed contact K switch M3a is connected simultaneously, normally opened contact K switch M2f, normally-closed contact K switch M3e is set gradually between the upper contact of normally-closed contact K switch M2e and the lower contact of normally-closed contact K switch M2a, the upper contact of normally opened contact K switch M3f is connected with normally opened contact K switch M2f lower contact, the lower contact of normally opened contact K switch M3f is connected with the lower contact of normally-closed contact K switch M2c, and the lower contact of normally opened contact K switch M3d is connected with the lower contact of normally-closed contact K switch M3e, the lower contact of normally-closed contact K switch M2a simultaneously, the upper contact of normally opened contact K switch M3d is connected with the lower contact of normally opened contact K switch M2d, the upper contact of normally-closed contact K switch M3c simultaneously, contact switch KM1a ~ the KM1d of contactor KM1 is controlled by the break-make of coil KM1 by button SB1, contact switch KM2a ~ the KM2f of contactor KM2 is controlled by the break-make of coil KM2 by button SB2, and the contact switch KM3a ~ KM3f of contactor KM3 is controlled by the break-make of coil KM3 by button SB3.

3. three phase alternating current motor according to claim 1 general adjustment phase sequence device, it is characterized in that: described terminal box comprises contactor KM1, K2, KM2, K3 and KM3, wherein contactor KM1 comprises normally-closed contact K switch M1a and KM1c, normally opened contact K switch M1b and KM1d; Contactor K2 comprises normally opened contact K switch 2a, K2b and K2c; Contactor KM2 comprises normally opened contact K switch M2a, KM2b and KM2c; Contactor K3 comprises normally opened contact K switch 3a, K3b and K3c; Contactor KM3 comprises normally opened contact K switch M3a, KM3b and KM3c;

Normally-closed contact K switch M1a, normally opened contact K switch 2a are set between terminals U1 and U, normally-closed contact K switch M1c, normally opened contact K switch 2b are set between terminals V1 and V, normally opened contact K switch 2c is set between terminals W1 and W, between normally-closed contact K switch M1a upper contact and normally-closed contact K switch M1c lower contact, normally opened contact K switch M1b is set, between normally-closed contact K switch M1a lower contact and normally-closed contact K switch M1c upper contact, normally opened contact K switch M1d is set, normally opened contact K switch M2a is set gradually between normally opened contact K switch 2a upper contact and normally opened contact K switch 2b lower contact, normally opened contact K switch 3a, normally opened contact K switch M2b is set gradually between normally opened contact K switch 2b upper contact and normally opened contact K switch M2a lower contact, normally opened contact K switch 3b, normally opened contact K switch M3a, with normally opened contact K switch M3a while of normally opened contact K switch 2c lower contact, the lower contact of normally opened contact K switch 3b is connected, the upper contact of normally opened contact K switch M3a simultaneously with the lower contact of normally opened contact K switch M2a, the upper contact of normally opened contact K switch 3a is connected, normally opened contact K switch M2c is set gradually between the upper contact of normally opened contact K switch 2c and the lower contact of normally opened contact K switch 2a, normally opened contact K switch 3c, the upper contact of normally opened contact K switch M3c is connected with normally opened contact K switch M2c lower contact, the lower contact of normally opened contact K switch M3c is connected with the lower contact of normally opened contact K switch 2b, the lower contact of normally opened contact K switch M3b simultaneously with the lower contact of normally opened contact K switch 3c, the lower contact of normally opened contact K switch 2a is connected, the upper contact of normally opened contact K switch M3b simultaneously with the lower contact of normally opened contact K switch M2b, the upper contact of normally opened contact K switch 3b is connected, contact switch KM1a ~ the KM1d of contactor KM1 is controlled by the break-make of coil KM1 by button SB1, contact switch K2a ~ the K2c of contactor K2 and the contact switch KM2a ~ KM2c of contactor KM2 is controlled by the break-make of coil KM2 by button SB2, and the contact switch K3a ~ K3c of contactor K3 and the contact switch KM3a ~ KM3c of contactor KM3 is controlled by the break-make of coil KM3 by button SB3.