KR101635977B1

KR101635977B1 - module type motor starting device using base unit

Info

Publication number: KR101635977B1
Application number: KR1020150151721A
Authority: KR
Inventors: 송수준
Original assignee: (주)에스엔
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2016-07-07

Abstract

The present invention relates to a motor starting device. The present invention relates to a module type motor staring device using a base unit method which is formed to regulate power supplied to a motor by winding a plurality of electromagnetic contactors, a relay and a timer with y and delta winding methods, and more easily wind a power line and a control line, thereby not only releasing complexity of winding, but also easily replacing a corresponding component when the component is broken.

Description

[0001] The present invention relates to a module-type motor starting device using base unit,

The present invention relates to a motor starter, and more particularly, to a motor starter, which is configured to connect a plurality of electromagnetic contactors, a relay, and a timer with a wye-delta connection method to intermittently supply power to the motor, The present invention relates to a modular motor starter of a base unit type in which not only the complication of wiring can be solved but also the parts can be replaced easily when some parts fail.

Typically, the motor requires more current during start-up than during normal operation. That is, in the case of a single-phase motor, a starting current is required to be 4 to 9 times as much as a steady-state current. In the case of a three-phase motor, various methods for reducing a starting current in a downstream direction requiring 2 to 7 times of a starting current are used.

As the starting method of the motor for reducing the starting current, the upright start, the reactor start, the Y-Δ start, the inverter start, and the soft start method are widely used, and the most widely used starting method is Y- It is a wiring method.

The Y-Δ start method is economical and stable, and protects the motor and peripheral devices from overload by starting the motor by the reduced voltage method. In other words, it is started by reducing the torque to 1/3 by Y connection at the time of initial start, and it is switched to delta connection within a given time to maintain the constant speed. This is the most common starting method of large capacity motor starting. It is used for various applications such as pumps, pumps, etc., where large-capacity motors, such as plants, machinery tables, apartments, and buildings, are used.

Such a motor starter of Y-delta starting system is usually composed of three magnetic contactors (MC), one electronic motor protection relay (EMPR) and one timer in the case of small and medium capacity In the case of a large capacity, additional CT is additionally used. In addition, about 20 power lines and 30 control lines are used for wiring between them. The wiring structure is complicated by connecting a plurality of power lines and signal lines, (MCC, Motor Control Center) production cost, and wire stability.

Accordingly, various motor starters having improved wiring have been developed, for example, Patent Documents 1 to 3.

Patent Document 1 is designed to integrate a timer in one body and to turn on / off the main power by electromagnetically switching one electromagnet for main circuit and one elevator member for main circuit, and one star delta connection It is possible to perform star connection or delta connection by switching the electromagnet for one star and delta connection for delta connection so that the conventional complicated circuit can be processed more simply and the assemblability and productivity can be greatly improved In addition, it is possible to improve the stability through prevention of miswiring,

Patent Document 2 provides an easy wiring operation by changing the position of the wiring terminal and facilitates the installation and operator to adjust and maintain the operation of the Y-Δ starter,

In Patent Document 3, an electric device installed on a control panel for controlling the starting of a motor by a Y-delta starting system is reconfigured as an electrical component of a PCB type and installed on a PCB, and a terminal block to which electrical components that can not be installed on the PCB are connected, By using one PCB module, it is possible to reduce power wiring and control wiring used in the control panel, shorten the time required for wiring work, and greatly improve the production efficiency of the control panel.

Such conventional Y-delta motor starters include a system in which a timer is built in one body and a main power source can be turned on and off, and a star connection and a delta connection switching system are integrated into one body. When the component parts are damaged, only a part of them can not be repaired or replaced, and the whole part needs to be replaced, thus wasting unnecessary materials.

1. Korean Patent No. 10-0320030 2. Korean Patent No. 10-0502841 3. Korean Utility Model Registration No. 20-0395882

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the problems of the related art as described above, and has a structure in which a magnetic contactor, an EMPR, and a timer are inserted into a base unit for each module, And to provide a module-type motor starter of the base unit type which is provided with a detachable wiring block for wiring according to each part so that the wiring can be facilitated.

Further, the present invention provides a modular motor starter of the base unit type which can shorten the manufacturing time by simple wiring and increase the space utilization in manufacturing the MCC, thereby improving the economical efficiency by saving time, space and parts .

In order to achieve the above object, the modular motor starter of the base unit type according to the present invention comprises a EMPR, a plurality of electromagnetic contactors, and a timer, A module fixing groove for independently mounting a timer, and a base module having an input / output terminal connected to a commercial power supply; And a power line connector connected to a power terminal provided in the EMPR, the plurality of electromagnetic contactors, and the timer is made of an insulating material provided at an end of each wiring; And a signal line connector (S1) connected to a signal terminal provided in the EMPR, the plurality of electromagnetic contactors and the timer, and a signal connection block made of an insulating material provided at an end of each signal line. do.

The EMPR further includes a relay passage block contacting the input terminal of the base module. The block relay relay block is connected to both ends of the electric wire embedded in the insulating body and to a power terminal of the electromagnetic contactor And has a wire connector to be connected thereto.

The relay-breaker block is detachably installed in a relay connection hole formed in the power supply wiring block. The one-end wire connector is connected to the relay line connection terminal (12m) provided on the base module and the other-end line connector is provided on the side wall of the relay connection hole Connected to the connector.

Preferably, an EMPR, a plurality of electromagnetic contactors, and a hook having a resilient elastic property are provided at the lower ends of the timers, at the ends of the module fixing grooves of the base module.

The electric wire wiring block and the signal wiring block are respectively installed on both sides of the modules assembled to the base module. At both ends of the two blocks, coupling wings are formed, and the coupling wings are fixed by fixing means to couple the two blocks together So that they can not be separated from the modules.

The power line connector and the signal line connector may be formed as a socket into which the plate-shaped terminals are inserted. The terminals are formed with through holes or an engagement groove, and the socket forming the power line connector and the signal line connector is provided with a through- It is preferable that a catching jaw is formed.

As described above, the modular motor starter of the base unit type according to the present invention has the effect of shortening the manufacturing time by simple connection and improving the space utilization in manufacturing the MCC.

In addition, since each component is assemblably installed in the present invention, it is possible to replace only the abnormal component without replacing the entire component in case of an abnormality in each component, thereby reducing waste of unnecessary parts.

1 is a perspective view of an example of a modular motor starter of the base unit type according to the present invention.
2 is a plan view of a modular motor starter according to the present invention,
3 is a perspective view of a wiring block constituting a modular motor starter of the base unit type according to the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

The modular motor starter of the base unit type according to the present invention can more easily make the power line and control line connection of the motor starting device including the plurality of electromagnetically contacted wired and delta-connected contactors and the timer, In case of failure, only the parts can be replaced easily.

As described above, the modular motor starter according to the present invention is formed by Y-delta wiring of a modular EMPR 100, a plurality of electromagnetic contactors 200, and a timer 300, As shown in FIG. 2 and FIG. 2, the starter includes a base module 10, a power supply wiring block 20 for connection and a signal connection block 30 so that each component can be assembled easily.

As shown in FIG. 1, the base module 10 includes a module fixing groove 11 for independently mounting the EMPR, a plurality of electromagnetic contactors, and a timer, Output terminals 12i and 12o are provided.

The module fixing groove 11 is a groove in which the EMPR 100, the plurality of electromagnetic contactors 200 and the timer 300 are fitted and joined together. The EMPR 100, the plurality of electromagnetic contactors 200, And has the same shape as the outer shape of the lower end of the timer 300.

A plurality of electromagnetic contactors and a plurality of electromagnetic contactors are formed on the end of the module fixing groove 11 provided in the base module 10 and a locking protrusion 11d having elasticity for engaging with a lower end of the timer is formed, So that the inserted component is not separated from the base module.

The Y-delta wiring is wired in the power supply wiring block 20 and the signal wiring block 30, and the base module 10 is a unit for supporting the components in a state of being adjacent to each other, Only the input / output terminals 12i and 12o connected to the ends of the wiring are formed, and Y-delta wiring is performed between the input / output terminals 12i and 12o.

The power supply wiring block 20 is a means for wiring a power supply line between a plurality of electromagnetic contactors 200 for interrupting a commercial power supply. The Y-delta wiring for motor control, which is commonly used in a body made of an insulator, And wirings may be formed by stacking a plurality of layers.

The Y-delta wiring is generally used for Y-connection for motor control as described above, and a detailed description thereof will be omitted.

3, the power line connection block 20 may be integrally formed with the signal line connection block 30. The EMPR 100, the plurality of electromagnetic contactors 200, and the timer A power line connector 21c connected to the power supply terminal 21e provided in each of the power supply lines 300 is provided at an end of each line.

The power supply wiring block 20 thus configured is installed on both sides of the EMPR, a plurality of electromagnetic contactors and timers arranged as shown in Fig. 2 and Fig. 2, and at this time, power terminals 21e The power line connector 21c may be formed in a socket shape as shown in FIG. 3 so that the power line connector 21c is easily coupled to the power line connector 21c.

The signal wiring block 30 is a means for connecting signal lines for transmitting control signals to the EMPR, a plurality of electromagnetic contactors, and timers. Signal lines are wired in a body made of an insulator, And a signal line connector 31c connected to the signal terminal 31s of the timer.

It is preferable that the signal line connector 31c provided in the signal wiring block 30 is also formed in a socket shape like the power line connector 21c provided in the power line wiring block 20 described above.

Of course, the signal line connection block 30 may be formed integrally with the power line connection block 20.

In addition, a relay passage block 40 contacting the input terminal 10i of the base module 10 may be further provided in the wire passage hole 100h provided in the EMPR.

2 and 3, the relay-via block 40 includes an input terminal 10i and a wire connector (not shown) connected to the power supply terminal 21e of the electromagnetic contactor 200 at both ends of the electric wire buried in the insulating body. (41c).

As shown in FIG. 2 and FIG. 2, this relay-via-relay block 40 is detachably installed in a relay connection hole 20h formed in the power supply wiring block 20, and the one-end wire connector 40c is installed in the base module It is preferable to connect the electric wire connector 40c at the other end to a connector (not shown) provided at the side wall of the relay connection hole 20h.

As described above, the terminals 21e and 31s formed in the socket shape are provided with the latching holes H or the latching grooves. In the socket constituting the power line connector 21c and the signal line connector 31c, It is preferable that the latching jaw D is formed.

Of course, the power line connector 21c and the signal line connector 31c are made of a conductive metal having elasticity, and are opened when the terminals are inserted, and are returned after the terminals are fitted so that the latching groove or the latching hole is caught in the latching hole .

In the modular motor starter of the base unit type according to the present invention configured as described above,

The electric wire wiring block 20 and the signal wire connection block 30 are fixed to the module fixing groove 11 of the base module 10 and are installed on one side of each component aligned in a line, When the power supply terminal 21e and the signal terminal 31s are inserted into the power supply terminal 21e and the signal terminal 31s, the latching groove and the latching hole are caught by the latching jaws, It is preferable to make it possible to prevent it.

To this end, the two blocks 20 and 30 are respectively installed on both sides of the components as shown and the blocks are connected to each other so that the blocks are firmly fixed to the sides of the components, The wiring block 20 and the signal wiring block 30 are respectively installed on both sides of the modules assembled in the base module. At both ends of the two blocks, coupling vanes 20w and 30w are formed, Fixing means such as bolts were provided to couple the two blocks together.

In the modular motor starter of the base unit type according to the present invention configured as described above, a cover (not shown) may be further installed to cover the wiring blocks 20 and 30, And a latching groove or a latching groove is formed in the base module, thereby facilitating inspection.

Of course, the cover may be fixed to the base module using a fixing screw or the like.

10: Base module
11: module fixing groove 11d:
12i: Input terminal 12o: Output terminal
12m: Electrical connection terminal
20: Power supply connection block 20h: Relay connection hole
20w: Combination wing
21e: power terminal
21c: Power line connector
30: Signal connection block
31s: Signal terminal
31c: Signal line connector
40: Block via relay
40c: Wire connector

Claims

A motor starter which is formed by Y-delta wiring of EMPR 100, a plurality of electromagnetic contactors 200 and a timer 300,
A module fixing groove 11 for independently mounting the EMPR, a plurality of electromagnetic contactors, and a timer; a base module 10 having input / output terminals 12i and 12o connected to a commercial power source;
A power line connector 21c connected to a power terminal 21e provided in the EMPR, a plurality of electromagnetic contactors, and timers is embedded in an insulating material provided at an end of each wiring A power supply wiring block 20 made;
And a signal line connector 31c connected to a signal terminal 31s provided in the EMPR, the plurality of electromagnetic contactors and the timer is connected to a signal connection block 30 made of an insulating material provided at an end of each signal line, Wherein the base unit is mounted on the vehicle.

The method according to claim 1,
The EMPR further includes a relay passage block 40 which is in contact with the input terminal 10i of the base module 10,
The relay-via block 40 includes a wire connector 40c connected to the input terminal 10i and the power terminal 21e of the electromagnetic contactor 200 at both ends of the electric wire embedded in the insulating body Modular motor starting device of base unit type.

3. The method of claim 2,
The relay-via block 40 is detachably installed in a relay connection hole 20h formed in the power supply wiring block 20 so that the one-end cable connector 40c is connected to the fixed-line connection terminal 12m provided in the base module , And the other end connector (40c) is connected to a connector provided on the side wall of the relay connection hole (20h).

The method according to claim 1,
And a locking protrusion (11d) having elasticity for engaging with a locking protrusion formed at a lower end of the timer is formed at an end of the module fixing groove (11) provided in the base module Type motor starter.

The method according to claim 1,
The power supply wiring block 20 and the signal wiring block 30 are respectively installed on both sides of modules assembled to the base module. At both ends of the two blocks, coupling vanes 20w and 30w are formed, Means are provided to couple the two blocks together so that they are not separated from the modules.

The method according to claim 1,
Wherein the power line connector (21c) and the signal line connector (31c) are sockets in which plate-shaped terminals (21e, 31s) are fitted.

The method according to claim 6,
The terminals 21e and 31s are provided with a latching hole H or a latching groove and a socket for connecting the power line connector 21c and the signal line connector 31c is provided with a latching hook D Wherein the base unit is mounted on the base.