KR960004292B1 - Motor control center - Google Patents

Abstract

an motor control center(ECC) unit associated attachably/detachably in an ECC housing by means of a slide supporting means, the ECC unit having function components coupled with an interior of the body and an operation part installed on the front surface thereof; first and second bars and a third connection portion installed in the ECC housing; and first to third connection holes installed on the unit body and electrically connected to the first and second bars and a third leading hole, the third connection portion and leading hole connectable in the state where the first and second connection holes are released from the first and second bars.

Description

Slim Motor Control Center

1 to 12 are views showing the configuration and operation of the MC according to the present invention,

1 is an external perspective view of the MC.

2 is a partial perspective view of the MC unit in the open state.

3 is a perspective view of the frame.

4 is a busbar coupling configuration.

5 is a perspective view of the MC unit.

6 is a perspective view of the housing of the MC unit.

7 is a plan view showing the MC unit is completely coupled to the MC housing.

8 is a plan view showing the MC unit slightly open for inspection.

9 is a plan view showing the MC unit is completely open.

10 is a cross-sectional view taken along the line A-A of FIG.

11 is a sectional view taken along the line B-B in FIG.

Figure 12 is a (a), (b), (c), (d) is a diagram illustrating the configuration and operation of the locking means.

13A and 13B are perspective views of a rail and a slider.

14 is a longitudinal sectional view of the locking means.

Figure 15 (a) is a perspective view of a conventional MC.

(b) is a schematic diagram of a conventional MC wiring structure.

* Explanation of symbols for main parts of the drawings

1: MC housing 2: Frame

3: connector fixing plate 4: primary busbar

5: 2nd booth bar 6: 3rd outlet

7: rail 8: slider

9: Front leaf spring 10: Rear leaf spring

9a, 9b, 10a: 1st, 2nd, 3rd locking hole 11: bearing support

12: bearing 13: spring

14: clasp 15: rotating body

18: main busbar 20: MC unit

20 ': housing of the unit 20a: gripping hole

21: primary connection port 22: secondary connection port

23: tertiary connector 32: operation panel

37: handle

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor control center (MCC) for driving control of heating and heating facilities in various building light apartments and various motors installed for the operation of elevator equipment. The present invention relates to a slim type motor control center installed in a horizontal drawer type so that the motor drive control capacity can be increased with a minimum volume of the conventional MC.

Conventionally, MC is installed in the machine room of a large building such as a building or an apartment, and supplies a suitable power for starting and normal operation to a motor for heating and heating facilities and an motor for an elevator facility, and abnormal power is applied to the motor. It detects this and automatically shuts off to prevent damage to the motor, and is used for the purpose of controlling the motor properly as required by the equipment.

As shown in FIG. 15, a typical embodiment of such a conventional MC is hinged to the MC housing 50 so that the door 51 is opened and closed in a manner of opening and closing, and the door 51 is locked by the locking device 52. ) Can be locked to prevent unauthorized opening, and various motor control parts such as voltage drop transformer, current transformer, switchgear, relay, automatic breaker, fuse, timer and electronic over current relay (ECOR) (54) The combined part fixing base plate 52 is erected vertically in the insertion chamber provided in the MC housing 50, and assembled and fixed in multiple stages, and the door 51 has a circuit breaker operation lever for operating the MC unit. Operation parts 55 such as a power supply on / off and a button trip warning display lamp are provided.

A first connecting portion 57 is provided below the component fixing base plate 53, and a second connecting portion 58 is fixed to each base plate insertion chamber rear portion of the MC housing 50. The main connection part 59 is fixed to the lower end of the MC housing 50 so that power and various signals are connected to each other through the wires 60 and 61 between the connection ports 57, 58, and 59. have.

In the conventional MC as described above, since the component fixing base plate 52 is vertically installed and installed in the MC housing 50, the MC is enlarged and the installation space utilization rate is lower than that of the MC of the present invention. There is a problem of only about 3, because the door 51 is hinged to the MC housing 50 and various parts are coupled to the door 51 so that the door 41 cannot bear the weight, and gradually lowers when used for a long time. Since the MC housing 50 and the door 51 are deformed, the MC housing 50 and the door 51 are not easily closed or opened, which may not only be inconvenient to use, but also lower the reliability. In particular, the third connection part 59 and the second connection part may be deteriorated. (58) should be connected by a plurality of strands of wires 61, and the second connection portion 58 on the part fixing base plate 53 side and the operation portion on the door 51 side should be connected by a plurality of strands of wires 60. Since the wiring is very complicated, the demanding work that must be connected to the receptacle 56 at the time of the wire connection is required, the wiring work efficiency is lowered, there is a defect that the productivity and the after-service is very low.

The present invention was devised to solve the above-mentioned conventional defects, and by installing the MC unit horizontally in multiple stages, greatly improving the installation space utilization as compared to the conventional, and miniaturizing the entire volume of the MC, The MC unit can be detachably attached to the MC housing so that the MC unit can be easily separated and detached, and there is almost no deformation even when used for a long period of time. When the MC unit is attached and detached to be automatically created to remove the complicated wiring work to be connected and separated, the MC of the present invention will be described in detail with reference to the accompanying drawings as follows.

First, referring to FIGS. 1 to 4, in the drawing, 1 is an MC housing, and the MC housing 1 has a structure in which an exterior plate is coupled to the frame 2, and the MC housing 1 The MC unit 20 is combined in multiple stages (14 stages in the drawing).

5 shows a perspective view of the MC unit 20, and FIG. 6 shows a perspective view of the unit housing 20 '.

As shown in Figures 1 to 6, the present invention is a MC unit 20 coupled to the functional parts inside the unit housing 20 'is detachably coupled to the MC housing (1) The electrical connection provided in the unit enclosure 20 'and the MC housing 1 is fitted and coupled, and an operation part is formed on the front surface of the MC unit 20.

The MC unit 20 has gripping holes 20a formed on both side plates of the unit housing 20 'so as to be transported and handled by hand. In addition, the MC unit 20 is a functional component is coupled to the inside of the unit housing 20 ', the rear of the unit housing 20' primary connection port 21, secondary connection port 22 and tertiary connection port The 23 is coupled, and the operation panel 32 has a configuration in which control components are coupled to the front panel. The MC housing 1 is provided with an insertion part 1 'into which the MC unit 20 is inserted in the horizontal direction. In the MC housing 1, the primary bus bar 4 is disposed in the longitudinal direction of the frame 2 such that the primary connector 21, the secondary connector 22, and the tertiary connector 23 are fitted. The secondary busbar 5 and the tertiary outlet 6 are fixed to the connector fixing plate 3 fixed to the rear of the frame 2. The MC unit 20 is configured to be coupled to the MC housing 1 so as to be opened and closed by a slide support means.

The primary connector 21 is connected to the primary busbar 4 to receive power.

The secondary connector 22 is connected to the secondary busbar 5 to transmit driving power to the motor. The tertiary connection port 23 is connected to the tertiary outlet 6 to transmit a signal necessary for driving control between the MC unit 20 and the motor, or in the case of a large building, a control signal to the main control enter side. Will be sent or received.

In the configuration in which the functional units are coupled to the MC unit 20, for example, as shown in FIG. 5, the voltage drop transformer 24, the current transformer 25, and the switch 26 are formed on the bottom surface of the unit housing 20 ′. , A relay 27, a car breaker 28, a fuse 29, a timer 30, and an electronic over current realy (ECOR) 31 are connected in a circuit.

On the front of the MC unit 20, the operating parts for operating the MC unit 20 is coupled, the operation meter 32, the current meter 34, the power switch 35, trip (trip) The operation parts such as the warning lamp 36 are fixed, and the breaker operation lever 33 is installed at one side.

The primary busbar 4 is connected to the main busbar 18 fixed to the upper end of the frame 2 as shown in FIG. 4 and connected to a power source, and the main busbar 18 is connected to the upper end of the frame 2. It is fixed to the fixed support bar 17 to supply power from the outside.

The main busbar 18 is fixed to the support bar 17 by an insulated support holder 19, and the primary busbar 4 is fixed to the connector fixing plate 3 by an insulated support holder 19 ′. .

12 to 14, the rail 7 fixed to both sides of the frame 2 and having a bearing 12 and a bearing support 11 coupled therein, and the MC unit It is composed of a slider 8 fixed to both sides of the 20 and slidably coupled to the rail 7.

In addition, the present invention is provided with a step-locking and locking means for the MC unit 20 to be opened in stages when the MC unit 20 is opened and locked when the MC unit 20 is closed.

The step-locking and locking means is the MC unit 20 is coupled to the MC housing 1, the primary connector 21, the secondary connector 22 and the tertiary connector 23 is the primary busbar ( 4), when connected to the secondary busbar (5) and the tertiary outlet (6), the first stage fully connected state to prevent unauthorized opening, only the tertiary outlet (23) for the inspection, the tertiary outlet (6) Part of the second step of opening partly to be connected to the part, and the third, third, and third connection ports 21, 22, and 23 are completely open to be disconnected for repair. When the MC unit 20 is separated from the MC housing 1, the MC unit 20 is configured to be held in a released state.

The stepwise locking and locking means has a first locking hole 9a and a second locking hole 9b and a rear leaf spring 10 fixed to a rear side of one side of the unit housing 20 'and 1, 2, 3, the locking piece (7a) formed in the front end portion of the rail (7) to be caught in the car locking holes (9a), (9b), (10a), and the clamping plate fixed to the front plate of the unit housing (20 ') 14 and a spring 13 connected between the pivot 15 of the clamp 14 and the tip of the front leaf spring 9.

The pivoting lever 15a is fixed to the pivoting body 15 so that the spring 13 is connected to the pivoting lever 15a.

In addition, the handle 37 is fixed to both sides of the front side of the unit 20 so that the MC unit 20 can be opened and closed.

In FIG. 6, reference numeral 38 denotes an interlocking lever interlocked with the breaker operation lever 33 installed inside the bottom plate of the MC unit 20, and 39 is installed to move left and right on one side thereof. The slide rod for pushing the interlocking lever 38 is displayed, and 40 is a plate spring having one end fixed to the side plate to push the slide rod to be located at one side thereof.

According to the present invention as described above, the driving of the motor is normally controlled in the states shown in FIGS. 1, 7, 10, and 12 (a). As shown in FIGS. 11 and 12 (b), the MC unit 20 is partially opened, and the primary connector 21 and the secondary connector 22 are opened by the primary busbar 4 and the secondary busbar ( 5), the secondary connector 22 remains connected to the tertiary outlet 6, and then the function of the motor is checked through the tertiary outlet 23 and the tertiary outlet 6, and the MC When the CC unit 20 is to be repaired, the MC unit 20 is repaired with the MC unit 20 fully opened as shown in FIGS. 9 and 12 (c). In the state where the MC unit 20 is fully connected to the MC housing 1 and is normally operating, the MC unit 20 is Since it is locked by the locking mechanism and the locking means, the door cannot be opened without permission, and if it is desired to check in such a state, the MC unit 20 is operated in a part of the two-stage connection state as shown in FIGS. 8 and 12 (b). If you want to check and repair only a part of it, and if you want to repair, operate the MC unit 20 by opening it completely in three stages as shown in Figs. In the case where the 20 is to be completely removed from the MC housing 1, it is removed by operating in a locked state.

Step by step operation of the locking and locking means, 7 and 12 (a) state, that is, the front leaf spring (9) fixed to the front side of the one side plate of the MC unit 20 in the first stage of fully connected state (9) Since the locking piece 7a of the rail 7 is inserted into the primary locking hole 9a of the c), it becomes locked, so that the MC unit 20 cannot be opened.

In such a state, in order to open the MC unit 20 in the state of inspection in a part of two stages, the key 16 is inserted into the clamp 14 and the rotating body 15 is rotated to be connected to the spring 13. As the leaf spring 9 is pulled out, the locking piece 7a of the rail 7 is pulled out from the primary catching hole 9a of the front leaf spring 9. As shown in FIG. 12 (b), only a part is opened, and the locking piece 7a of the rail 7 is caught in the secondary locking hole 9b to maintain the secondary locking state, thereby stably checking in this state.

In addition, when opening the MC unit 20 in a three-stage fully disconnected state in such a partially open state, the front plate spring 9 is pulled out by turning the rotating body 15 again with the key 16. Since the engaging piece 7a of the rail 7 is pulled out from the secondary locking hole 9b of the front leaf spring 9, the MC unit 20 is opened as shown in FIGS. 9 and 12 (c). In this case, the locking piece 7a of the rail 7 is caught by the third locking hole 10a of the rear leaf spring 10 to maintain the third locking state. It can be kept stable.

The main busbar 18 in the state where the MC unit 20 is coupled to the MC housing 1 as shown in FIGS. 1, 7, 10 and 12 of the present invention. Power applied through the primary bus bar (4) is transmitted through the primary connection port 21, the main circuit is supplied with power to the primary side of the automatic circuit breaker 28, the current when the automatic circuit breaker 28 is turned on The power is applied to the motor through the secondary connector 22 and the secondary busbar 5 after passing through the switch 26 through the first wire of the transformer 25 and through the ICO 31.

And, the operation circuit is connected to the front operation panel through the voltage drop transformer 24, the switch 26 and the relay 27 after the automatic circuit breaker 28 is turned on and passed through the fuse 29 through the secondary, It is connected to the motor and external control room through the tertiary connection port 23 and tertiary outlet 6 of the rear part, so that the power is properly adjusted when the motor is started and during normal operation, and automatically in case of abnormal power supply to the motor. An operation such as blocking to protect the motor is performed, and the electric circuit and operation for driving and controlling the motor are almost similar to the conventional MC.

The MC of the present invention as described above has a configuration in which the MC unit 20 is laid horizontally and installed in multiple stages in the MC housing 1, so that the MC having the conventional component fixing base plate 53 installed vertically. Since the MC unit 20, which is almost three times larger than that of the CC, can be installed in the same installation space, the utilization of the installation space is greatly increased, and thus, it can be used very advantageously in a building having a small space.

In addition, the MC unit 20 is detachably attached to the MC housing 1, and since the separate door is configured to be removed, the MC unit 20 is very easy to combine and detach, and is convenient for use. In addition to improving the performance, the MC unit 20 is slidably opened and closed by the rail 7 and the slider 8, so the opening and closing operation of the MC unit 20 is very smooth. There is no door, so the MC housing can be kept in its original state for a long time without being deformed.

In addition, since the gripping holes 20a are formed on both side plates of the MC unit 20 so as to be held by hand, the MC unit 20 can be easily separated and handled.

Furthermore, the primary busbars 4 fixed to the first, second and third connection ports 21, 22 and 23 fixed to the rear part of the MC unit 20 and the frame 2 of the MC housing 1 are fixed. ), The secondary busbar 5 and the tertiary outlet 6 are fitted in a fitting manner so that the power and various signals can be transmitted, thereby greatly simplifying the wiring work.

In addition, the MC unit 20 can be safely locked in the closed state by the stepwise locking and locking means, and in the checking state and the repairing state, the key can be opened step by step and the open state can be kept stable. Therefore, there is an advantage that the inspection and repair of the MC unit 20 can be very simple and easy.

MC of the present invention as described above is lighter and shorter than the conventional MC (輕薄 單 小) can be installed very advantageously not only in large buildings but also in small buildings, especially places where the installation space is narrow, assembling This not only contributes significantly to productivity improvement, but also is easy to use, and has excellent after-sales service, which greatly improves the reliability of the product.

Claims (9)

The MC unit is coupled to the interior of the unit housing, the MC unit is installed in the front of the operation unit is detachably coupled by the slide support means to the MC housing (1), the MC housing is the primary busbar and 2 Primary busbars and tertiary connections are provided, and the unit enclosures are provided with 1,2 and tertiary connectors that are electrically connected to the primary and secondary busbars and tertiary outlets, respectively, and the tertiary and tertiary outlets. Slim motor control center, characterized in that installed in the position that can be connected even when the first and second connection ports are disconnected from the first and second busbars. The frame of the MC housing, the primary busbar to which the primary connector is fitted is fixed in a vertical direction, and the secondary connector and the tertiary connector are fitted to the rear portion of the frame. Slim type motor control center, characterized in that the fixing stationary fixing plate for fixing the second busbar and the third outlet. The slim type motor control center according to claim 1, wherein gripping holes are formed on both side plates of the unit housing so as to be carried and handled by hand. According to claim 1, The slide support means is composed of a rail fixed to both sides of the frame and the bearing and the bearing support is coupled to the inside, and a slider fixed to both sides of the MC unit and slidably coupled to the rail Slim motor control center characterized by. The MC unit is coupled to the interior of the unit housing, the MC unit is installed in the front of the operation unit is detachably coupled by the slide support means to the MC housing (1), the MC housing is the primary busbar and 2 Car busbars and tertiary connections are installed, and the unit enclosures are provided with 1,2 and tertiary connectors that are electrically connected to the 1st and 2nd busbars and 3rd outlets, respectively. The first stage is fully connected and the third outlet is connected to the third outlet, and the first and second outlets are connected to both the first and second busbars and the third outlet. It is characterized in that it is provided with a step-locking and locking means for maintaining both the connected state and the 1, 2, 3 connection port in the 3 level complete disconnection state completely separated from the 1, 2 bus bar and the 3 outlet. Slim motor control centers. According to claim 5, The step-locking and locking means is fixed to the front half of the one side of the unit housing and the front leaf spring is formed with a first locking hole in the front end portion and the front end of the guide rail fixed to both inner surfaces of the MC housing Slim type motor control center characterized in that it is formed of a latching state bent to be caught by the primary locking hole, and the locking state release means for releasing the locking state by pulling the front end of the front leaf spring inwards. The slim type motor control center according to claim 6, wherein the front leaf spring is provided with a second locking piece that is caught by the guide rail in a partially connected two-stage partially connected state to check the MC unit. 6. The slim type motor control according to claim 5, wherein rear leaf springs are fixed to rear sides of both sides of the unit housing, and terminating portions of the rear leaf springs are formed with tertiary locking holes for engaging the guide rails in a fully disconnected state. center. 7. The locking mechanism according to claim 6, wherein the locking state releasing means comprises a clamp fixed to the front plate of the unit housing, a pivot lever fixed to a rear end of the pivot of the clamp and a spring connected to the front end of the front leaf spring. Slim motor control center, characterized in that.