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Energy saving soft start cabinet

A soft-start, soft-starter technology, applied in the direction of motor starter, energy industry, AC motor control, etc., can solve the problems of power line load power line damage, unable to control the motor to start gradually, etc., to reduce capacity, reduce enterprise The effect of increasing basic electricity bills and manufacturing costs

Pending Publication Date: 2019-10-25
LIUPANSHUI VENUS ELECTROMECHANICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both the soft starter and the motor are protected by a fuse, and the motor cannot be controlled to start gradually. When multiple motors start at the same time, it will bring a large load to the power line and cause damage to the power line.

Method used

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  • Energy saving soft start cabinet
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] Such as figure 1 , 2 , The present invention shown in 3 is set as a soft starter to start three motors

[0037]1 Start motor M1

[0038] (1) The signal light HL1 is on, M1 can be started, and the circuit breakers QF1 and QF2 can be closed;

[0039] ⑵Press the start button SB1, figure 2 The electric pull-in of the KM4 coil in the middle, figure 1 The main contact of KM4 is closed, image 3 The middle KM4 normally open auxiliary contact is closed, the soft start enters the start state, and the motor M1 is powered on to start. figure 2 The KM4 normally open auxiliary contact is closed and self-protected, and the time relay KT1 coil is energized to start timing;

[0040] ⑶ After the start-up process of the soft starter is over, the motor M1 enters the normal running state, the time relay KT1 settling time is up, its normally open auxiliary contact is closed, and the coil of the contactor KM1 is energized and closed. figure 2 The normally closed auxiliary contact i...

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PUM

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Abstract

The invention provides an energy saving soft start cabinet. The energy saving soft start cabinet includes multiple motors and soft start circuits, a power source circuit and an energy saving circuit.The energy saving soft start cabinet is characterized in that motor start performance can be improved by the soft start circuit, soft start of many devices is achieved with just one soft starter, equipment investment and the power distribution room use area are effectively reduced, during use, the motors are started one by one, blocking is technically achieved, the impact on the power transformerdue to simultaneous start of the multiple motors is avoided, the energy saving circuit can further effectively reduce a total current drawn by the motor from the power grid, a power factor of the motor is increased, system loss is reduced, the cable cross section and cable and power transformer temperature rising are reduced, the power transformer capacity is reduced, the basic electricity bill ofan enterprise is reduced, and purposes of energy saving and consumption reduction are achieved.

Description

technical field [0001] The invention relates to an energy-saving soft starter cabinet. Background technique [0002] Many existing motors are directly started, star-delta started and auto-coupling decompression starter cabinets cannot be started. Many existing soft starters are used to start. Each motor uses a soft starter, which increases equipment manufacturing costs and initial investment. Larger, and one device is equipped with one starter cabinet. For enterprises with many devices, there will be many starter cabinets that greatly occupy the area of ​​the company's power distribution room. [0003] The existing reactive power on-site compensation device is directly connected to the motor terminal, and the motor is put into operation at the same time and withdrawn from operation at the same time. When the motor stops running, the motor will continue to rotate due to the inertia of the motor rotation, and the compensation capacitor will discharge through the motor winding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/58H02P23/00H02P23/26
CPCH02P1/58H02P23/00H02P23/26Y02P80/10
Inventor 曾天锐佘梦云
Owner LIUPANSHUI VENUS ELECTROMECHANICAL EQUIP
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