CN2161017Y

CN2161017Y - Energy-saving autocoupling reduced-voltage starter

Info

Publication number: CN2161017Y
Application number: CN 93231415
Authority: CN
Inventors: 程鹏程
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-16
Filing date: 1993-07-16
Publication date: 1994-04-06
Anticipated expiration: 2003-07-16

Abstract

The utility model relates to an energy-saving autocoupling reduced-voltage starter which belongs to the starting control device of an induction motor. A small bus bar is arranged at the output terminal of an autotransformer, a motor 1D and a motor 2D are respectively connected with the small bus bar by a starting contactor, and the star points of the autotransformer are enclosed by a contactor C-[3]. A starting contactor C-[1-2], a starting contactor C-[2-2] and an operating contactor C-[1-1] are locked with each other by contact heads. The starting contactor C-[2-2], the starting contactor C-[1-2] and an operating contactor C-[2-1] are locked with each other by the contact heads. The utility model has the advantages of small starting current, large starting torque, small impact force, automatic and manual function, low cost, small ground occupation, convenient operation and reliable performance. When the utility model is used, one autotransformer can start the two motors.

Description

Energy-saving autocoupling reduced-voltage starter

The energy-conservation self coupling reduced voltage starter of the utility model belongs to the start-up control device of induction motor.

The starting device of motor generally adopts the autotransformer reduced-voltage starting in the prior art, and its shortcoming is an autotransformer cost height, and utilance is low, and the erection unit floor space is big.

The purpose of the energy-conservation self coupling reduced voltage starter of the utility model; be to overcome above-mentioned shortcoming and design an a kind of energy-conservation self coupling reduced voltage starter; start the start-up control device of two motors; autotransformer device is in the starter bottom; the autotransformer output is provided with little bus; two motors is connected with little bus by starting A.C. contactor respectively; between the starting contactor and the operation contactor by the contact interlocking; motor carries out the transition to running status by starting state and adopts contactor to switch, and switch with knifeshaped fuse is as short-circuit protection and isolating switch.

The energy-conservation self coupling reduced voltage starter of the utility model takes following scheme to realize, it is to be made of framework and autotransformer and starting contactor and operation contactor and switch with knifeshaped fuse and knife switch and change over switch and measuring instrument, autotransformer ZOB output is provided with little bus, and motor 1D and 2D are respectively by starting contactor C _1-2And C _2-2Be connected operation contactor C with little bus _1-1And C _2-1Be connected starting contactor C with HR2 with HR1 _1-2And C _2-2With operation contactor C _1-1By the contact interlocking, starting contactor C _2-2And C _1-2With operation contactor C _2-1By the contact interlocking, the asterism of autotransformer is by contactor C ₃Sealing.

The effect of the energy-conservation self coupling reduced voltage starter of the utility model is that starting current is little, and starting is changeed apart from big, and the impact to machinery during starting is less, cost is low, and floor space is few, and is easy and simple to handle, dependable performance, 30%, one compensator starting two motors reduces cost.

The energy-conservation self coupling reduced voltage starter of the utility model will be further described in conjunction with the accompanying drawings.

Fig. 1 is the structural representation of the energy-conservation self coupling reduced voltage starter of the utility model.

Fig. 2 is the circuit diagram of the energy-conservation self coupling reduced voltage starter of the utility model.

Fig. 3 is the circuit diagram of the energy-conservation self coupling reduced voltage starter of the utility model.

1-voltmeter 2-ammeter 3-indicator light 4-button 5-switch with knifeshaped fuse 6-change over switch 7-knife switch 8-framework

With reference to Fig. 1,2,3, the upper device voltmeter (1) of the framework of the utility model energy-saving autocoupling reduced-voltage starter (8) and ammeter (2) and indicator lamp (3) and button (4) and switch with knifeshaped fuse (5) and change-over switch (6) and knife-like switch (7), auto-transformer ZOB output arranges little bus, motor 1D is connected with 2D by starting contactor and is connected contactor C with little bus₃The asterism of sealing auto-transformer ZOB, starting contactor C_1－2And C_2－2With operation contactor C_1－1By contact interlocking, starting contactor C_2－2And C_1－2With operation contactor C_2－1Interlocked by contact. Time relay sj₁Start, time-delay normally opened contact closure is connected intermediate relay ZJ₁The loop, intermediate relay ZJ₁Normally-closed contact cuts off starting contactor C_1－2The loop cuts off contactor C₃The loop, starting contactor C_1－2With contactor C₃Withdraw from time relay sj₁Normally opened contact is connected operation contactor C_1－1The loop, operation contactor C_1－1The adhesive self-insurance, motor 1D and power connection enter the work operation. During actuating motor 2D, switch with knifeshaped fuse HR closes₂(5), press start button 2QA and get final product, actuating motor 2D is identical with actuating motor 1D, starts knife-like switch HD(7 under the complete post-tensioning). Manually boot change-over switch HK(6) manual position, the knife-like switch HD(7 of the auto-transformer ZOB that closes), the switch with knifeshaped fuse HR of the motor 1D that closes₁(5), press start button 1QA(4), contactor C₃Adhesive, sealing auto-transformer ZOB asterism, the normally opened contact closure starts contact C_1－2Connect adhesive, the normally opened contact closure keeps in touch device C₃, auto-transformer ZOB output is connected through little bus and motor 1D, and motor 1D enters starting state. Starting contactor C_1－2Normally-closed contact cuts off operation contactor C_1－1With starting contactor C_2－2Operation button 1SA(4 is pressed in interlocking), starting contactor C_1－2The loop cuts off, starting contactor C_1－2Normally opened contact disconnect contactor C₃The loop, starting contactor C_1－2With C₃Withdraw from operation button 1SA(4) connect and move contactor C_1－1The loop, operation contactor C_1－1The adhesive self-insurance, motor 1D and power connection enter operation. Actuating motor 2D, switch with knifeshaped fuse HR closes₂(5), press Start button 2QA, motor 2D starts identical with motor 1D.

The embodiment of the energy-conservation self coupling reduced voltage starter of the utility model.It is to go up device voltmeter (1) and ammeter (2) and indicator light (3) and button (4) and switch with knifeshaped fuse (5) and change over switch (6) and knife switch (7) by framework (8), autotransformer ZOB output is provided with little bus, motor 1D is connected contactor C respectively with 2D with little bus by starting contactor ₂The asterism of sealing self coupling reduced voltage starter ZOB, starting contactor C _1-2With C _2-2With operation contactor C _1-1By the contact interlocking, starting contactor C _2-2With C _1-2With operation contactor C _2-1By the contact interlocking.Automatically startup places automated location with change over switch (6), and knife switch HD(7 closes), the switch with knifeshaped fuse HR of the motor 1D that closes ₁(5), press start button 1QA(4), contactor C ₃Adhesive, normally opened contact closure, starting contactor C _1-2Connect adhesive, motor 1D enters starting state.Starting contactor C _1-2Normally opened contact relay turn-on time SJ ₁The loop, starting contactor C _1-2Normally-closed contact disconnects operation contactor C _1-1The loop, normally-closed contact disconnects starting contactor C _2-2Interlocking is realized in the loop.Through after the start-up time of adjusting, relay SJ ₁After time-delay normally opened contact closure, connect intermediate relay ZJ ₁The loop, ZJ ₁Normally-closed contact disconnects starting contactor C _1-2The loop, starting contactor C _1-2With contactor C ₃Disconnection is deactivated.Intermediate relay ZJ ₁Normally opened contact is connected operation contactor C _1-1The loop, operation contactor C _1-1The adhesive self-insurance, motor 1D enters the work operation, actuating motor 2D is identical with actuating motor 1D, starts knife switch HD(7 under the post-tensioning that finishes).Manually boot change over switch HK(6) place manual position, knife switch HD(7 closes), switch with knifeshaped fuse HR closes ₁(5), press start button 1QA(4), motor 1D enters starting state, after treating that starting current is stable, press operation button 1SA(4), motor 1D enters the work operation, actuating motor 2D is identical with actuating motor 1D, starts knife switch HD(7 under the post-tensioning that finishes).

Claims

1, a kind of framework of energy-conservation self coupling reduced voltage starter (8) is gone up device voltmeter (1) and ammeter (2) and indicator light (3) and button (4) and switch with knifeshaped fuse (5) and change over switch (6) and knife switch (7), it is characterized in that autotransformer ZOB output is provided with little bus, motor 1D is connected contactor C respectively with 2D with little bus by starting contactor ₃The asterism of sealing autotransformer ZOB, starting contactor C _1-2With C _2-2With operation contactor C _1-1By the contact interlocking, starting contactor C _2-2With C _1-2With operation contactor C _2-1By the contact interlocking, startup places automated location with change over switch HK (6), the knife switch HD (7) that closes, the switch with knifeshaped fuse HR of the motor 1D that closes automatically ₁(5), press startup button 1QA (4), contactor C ₃Adhesive, normally opened contact closure, starting contactor C _1-2Connect adhesive, motor 1D starts, starting contactor C _1-2Normally opened contact relay turn-on time SJ ₁The loop, starting contactor C _1-2Normally-closed contact disconnects operation contactor C _1-1The loop, normally-closed contact disconnects starting contactor C _2-2The loop, through after the start-up time of adjusting, relay SJ ₁Time-delay normally opened contact closure, connect intermediate relay ZJ ₁The loop, ZJ ₁Normally-closed contact disconnects starting contactor C _1-2The loop, starting contactor C _1-2With contactor C ₃Disconnection is deactivated, intermediate relay ZJ ₁Normally opened contact is connected operation contactor C _1-1The loop, operation contactor C _1-1The adhesive self-insurance, motor 1D enters the work operation, and actuating motor 2D is identical with starter motor 1D, starts knife switch HD (7) under the post-tensioning that finishes.

2, according to the described energy-conservation self coupling reduced voltage starter of claim 1, it is characterized in that manually booting with change over switch HK(6) place manual position, knife switch HD(7 closes), switch with knifeshaped fuse HR1(5 closes), press start button 1QA(4), motor 1D enters startup, press operation button 1SA(4), motor 1D enters the work operation, and actuating motor 2D is identical with actuating motor 1D, starts knife switch HD(7 under the post-tensioning that finishes).