KR20160112085A - The Local Control Panel With Function of locking Circuit Breaker Switch - Google Patents

The Local Control Panel With Function of locking Circuit Breaker Switch Download PDF

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Publication number
KR20160112085A
KR20160112085A KR1020150036960A KR20150036960A KR20160112085A KR 20160112085 A KR20160112085 A KR 20160112085A KR 1020150036960 A KR1020150036960 A KR 1020150036960A KR 20150036960 A KR20150036960 A KR 20150036960A KR 20160112085 A KR20160112085 A KR 20160112085A
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KR
South Korea
Prior art keywords
switch
breaker
circuit breaker
control panel
lock
Prior art date
Application number
KR1020150036960A
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Korean (ko)
Inventor
안병립
Original Assignee
엔텍월드(주)
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Publication date
Application filed by 엔텍월드(주) filed Critical 엔텍월드(주)
Priority to KR1020150036960A priority Critical patent/KR20160112085A/en
Publication of KR20160112085A publication Critical patent/KR20160112085A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

The present invention relates to a local control panel (LCP). More specifically, in a local control panel to supply power to important equipment, the present invention relates to a local control panel having a function of locking a circuit breaker (CB) switch by including a local control panel circuit breaker ON/OFF lock out tag out (LOTO) key switch for preventing unexpected negligent accidents generated when power to important equipment is cut off or power is supplied to the equipment in which the power is cut off for repair or the like, by preventing a worker other than a supervisor from arbitrarily operating the circuit breaker switch provided in the local control panel. According to an embodiment of the present invention, the local control panel having a function of locking a circuit breaker switch comprises: a plurality of devices for power measurement; a display unit (10) displaying measured data; and a circuit breaker on switch (20) and a circuit breaker off switch (30) turning on or off the circuit breaker which blocks power when overcurrent or overvoltage occurs, respectively. The local control panel further includes a key switch (21) for locking the circuit breaker on switch which is electrically connected to the circuit breaker on switch (20) turning on the circuit breaker and locks the circuit breaker on switch not to turn on the circuit breaker on switch (20) or releases a lock state.

Description

 [0001] The present invention relates to a local control panel having a circuit breaker,

The present invention relates to a field control panel, and more particularly, to a field control panel that supplies power to a critical facility, an operator other than the supervisor can not operate the operation switch of the circuit breaker provided in the field control panel, OFF LOTO (Lock Out Tag Out) Key Switch (Key Switch) To prevent power supply to the equipment which is shut off power supply for repair or to prevent unexpected safety accident, To a field control panel having a breaker operation switch lock function.

In general, a field control panel is a device used for directly monitoring and controlling field devices of a factory or a substation. It is composed of a collection of conductors that electrically connect and connect a plurality of electrically connected electronic devices by receiving external power , And these various electronic devices are safely insulated and stored in a rectangular steel enclosure.

A variety of major equipment are supplied with stable power through the on-site control panel. The user can check the power supply status through the measured data and cut off the supply power in the event of abnormal conditions such as surge, overvoltage or overcurrent Thereby preventing damage to various devices connected to the field control panel.

However, in the case of such a conventional field control panel, when an abnormal condition such as an overcurrent occurs, the power supply may be automatically shut off by a circuit breaker operated by a combination of electric and mechanical devices. However, , It is possible to forcibly turn off the power source by arbitrarily operating the circuit breaker operating switch provided in the circuit breaker and also to recover the power source that has been cut off, In a special situation where it is necessary to continuously supply the power except for the breaker itself shut off due to the occurrence of an abnormal condition such as operation of the blower for gas exhaust at the work site, When the power is cut off by arbitrarily operating the breaker operation switch, There is a problem that the operation is stopped and a human accident occurs. In order to repair the electric equipments, while the worker is working while the power is turned off by turning off the breaker operation switch, If the operation switch is arbitrarily turned on, an electric shock may occur. As described above, in the case of the conventional control panel, a worker other than the supervisor who supervises and supervises the operation state of the field control panel can easily operate the breaker operation switch, thereby causing a safety accident.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a control apparatus and a control method for controlling the on- Or an operation switch from OFF to ON can be prevented so that the occurrence of a safety accident can be prevented in advance,

This makes it possible to simplify the construction of the device for locking the breaker operation switch and to simplify the manufacture and to facilitate the additional installation in the conventional on-site control panel in which the breaker operation switch locking device is not provided, .

According to an aspect of the present invention, there is provided a power supply apparatus including a plurality of devices for measuring electric power, a display unit for displaying measured data, a circuit breaker for interrupting power supply when an over-current or an over- In a local control panel (LCP) in which a breaker on switch 20 and a circuit breaker off switch 30 are provided on the operation panel, respectively, The switch 20 is electrically connected to the breaker on switch 20 to turn on the breaker so that the breaker switch 20 can not be turned on, (Key Switch) 21 for releasing the ON state of the lock state; And a control panel (1) having a circuit breaker operation switch locking function.

In the field control panel 1 having a circuit breaker operation switch locking function according to an embodiment of the present invention, the circuit breaker is electrically connected to the breaker off switch 30, A key switch 31 for locking the switch 30 to prevent the breaker from being turned off or to release the lock state; And further,

Preferably, the on-switch lock key switch 21 and the off-switch lock key switch 31 are integrated and electrically connected to the breaker-on switch 20 for turning on the breaker The breaker off switch (not shown) which locks the breaker on or does not lock the breaker and turns off the breaker, The lock switch 30 is electrically connected to the lock switch 30 so that the breaker can not be turned off or the lock is released. Key Switch "

The field control panel having the breaker operation switch lock door according to the present invention can prevent any re-input after the breaker is interrupted, and the operator other than the specific supervisor who always supervises the operation state of the field control panel tries to operate the breaker operation switch It is possible to prevent the occurrence of a safety accident in advance by preventing the switching operation of the operation switch from the ON state to the OFF state or from the OFF state to the ON state,

Further, it is possible to simplify the construction of the device for locking the breaker operation switch, and to easily install the device even in a conventional on-site control panel in which the device for locking the breaker operation switch can be easily installed. Maintenance and repair can be facilitated.

1 is a front view showing a control panel of a field control panel having a key switch for on-switch locking in an on-site control panel having a circuit breaker operation switch locking function according to the present invention, and FIG.
2 is a block diagram illustrating a control panel of a field control panel having a key switch for on-switch locking and a key switch for off-switch locking in a field control panel having a function of locking a circuit breaker operation switch according to the present invention. Internal circuit diagram showing front view and internal circuit;
FIG. 3 is a block diagram of a field control panel having a function to lock a breaker operation switch according to the present invention, in which a key switch for on-switch locking and a key switch for off- A front view showing the control panel of the control panel and an internal circuit diagram showing the internal circuit; And
FIG. 4 is a front view showing a control panel of a field control panel having a lamp for informing, in a field control panel having a function of locking a circuit breaker operation switch according to the present invention;

Hereinafter, embodiments of the present invention in which the above object can be specifically realized will be described with reference to the accompanying drawings. In describing the embodiments, the same names are denoted by the same reference numerals, and further description thereof will be omitted below.

1 is a front view showing a control panel of a field control panel 1 provided with a key switch 21 for on-switch locking in a field control panel 1 having a circuit breaker operation switch locking function according to the present invention. And the internal circuit. The field control panel 1 having the circuit breaker operation switch locking function according to the present invention includes a plurality of devices for measuring electric power, not shown, A breaker on switch 20 for turning on and off a breaker CB for shutting off power when an overcurrent or an overvoltage is generated, Off switch 30 is provided on the operation panel and is disposed at a position spaced laterally of the breaker switch 20 and the breaker switch 30, Keys for on-switch locking Value is provided with a (Key Switch) (21) and an off switch lock with a key switch (Key Switch) (31) for.

The on-switch lock key switch 21 is electrically connected in series with the breaker-on switch 20 which turns on the breaker to turn on the breaker-on switch 20, as shown in Figs. 1A and 1B. The locker can be prevented from being turned on or the lock state can be released. The on-switch lock key switch 21 may be configured as a key switch having a two-step contact so as to select a locked state or an unlocked state. It is possible to turn left and right only when the operation key is inserted into the keyhole so that only the operator authorized to perform the operation from the supervisor or the supervisor responsible for the operation of the field control panel 1 can insert the key into the keyhole, By turning the key switch 21 to the left or right, it is possible to put the locker in a locked state so as not to turn on the breaker by pressing the breaker on switch 20, or to release the locker in the locked state, (Unlock) state.

That is, even if the on-switch key switch 21 is turned from the unlocked state to the locked state in a state where the breaker is already turned on via the breaker-on switch 20, The breaker is not turned off in a state that the breaker is in the off position but the breaker is turned off by the self-cutoff operation or the worker presses the breaker off switch 30 to turn off the breaker, The on-off state of the circuit breaker can be switched to the on state or the off state by turning off the circuit breaker, It does not work.

2 is a block diagram illustrating a control panel of a field control panel having a key switch for on-switch locking and a key switch for off-switch locking in a field control panel having a function of locking a circuit breaker operation switch according to the present invention. The key switch 31 for off-switch locking is an internal circuit diagram showing a front view and an internal circuit. As shown in Figs. 2A and 2B, the key switch 31 is electrically connected to the circuit breaker off switch 30, So that the breaker can not be turned off even if the breaker off switch 30 is pressed, or the lock is released. The off-switch lock key switch 31 may be configured as a key switch having a two-step contact so as to select a locked state or an unlocked state. It is possible to turn left and right only when the key switch 31 is inserted into the keyhole so that the key switch 31 for the off switch lock is rotated left or right while the operation key is inserted into the keyhole, The lock-off switch is set to a lock state so that it can not be operated, or it is changed to a lock-unlock state where the lock-state is released. The key switch 31 for off-switch lock does not directly operate the on-state or on-off state of the circuit breaker, but merely locks or unlocks the circuit breaker off-switch.

When the on-switch lock key switch 21 is locked and the off-switch lock key switch 31 is locked, the supervisor responsible for the field control panel 1 In addition, by prohibiting any breaker operation by any operator, only the breaker operation by the operation of the breaker itself can be performed, and the manual operation by the operator is prohibited.

FIG. 3 is a block diagram of a field control panel having a function to lock a breaker operation switch according to the present invention, in which a key switch for on-switch locking and a key switch for off- 3 is a front view showing the control panel of the control panel and an internal circuit diagram showing the internal circuit. The key switch 21 for on-switch locking and the key switch 31 for off-switch locking are integrated to provide a control panel as shown in FIGS. 3A and 3B Similarly, when the breaker switch 20 is electrically connected to the breaker on switch 20 that turns on the breaker, the breaker switch 20 is locked to prevent the breaker from being turned on, Off state of the circuit breaker is released and the breaker off switch 30 is electrically connected to the breaker off switch 30 which turns off the breaker so that the breaker off switch 30 turns off the breaker, Let's It may be composed of a lock (Lock), or to the lock (Lock), a key switch on the integrated lock (Key Switch) (50) to release the state. The function of the on-switch lock key switch 21 and the function of the off-switch lock key switch 31 are not limited to the above, Operation and function remain the same.

That is, when the mode is switched to the all unlock mode, the key switch 21 for the on-switch locking and the key switch 31 for the off-switch locking are all in the unlock position, (ALL Lock) is the same as the state in which the key switch 21 for the on-switch locking and the key switch 31 for the off-switch lock are both in the locked position, so that any breaker operation by any operator other than the supervisor is inhibited do. The on-lock state is the same as when the key switch 21 for the on-switch lock is in the locked position and the key switch 31 for the off-switch lock is in the unlock state, Off Lock state is the same as the case where the off switch lock key switch 31 is in the off lock position and the on switch lock key switch 21 is in the unlock state. In this way, one integrated key switch can be configured as a key switch having a four-stage switching contact so as to have four modes (ALL Unlock, ALL Lock, On Lock & Off Unlock, Off Lock & On Unlock) .

FIG. 4 is a front view showing a control panel of a field control panel having a lamp for informing, in a field control panel having a function of locking a circuit breaker operation switch according to the present invention. As shown in FIGS. 4A and 4B, , Whether or not the key switch for on-switch locking is in the locked state or the released state, or whether the key switch for locking the off-switch is in the locked state or the released state, through the light of the predetermined color Lock state lamps 22 and 51 and off-switch lock state lamps 32 and 52 so that even in a dark place where no light is separately provided, The present state of the key switch for the switch lock can be easily confirmed.

As described above, the on-site control panel 1 having the circuit breaker operation switch locking function according to the present invention is designed so that, when an operator other than the specific supervisor who constantly supervises the operation state of the on-site control panel 1 attempts to operate the circuit breaker operation switch It is possible to prevent the occurrence of a safety accident in advance by preventing the switching operation of the operation switch from ON to OFF or from OFF to ON,

In addition, it is unnecessary to use an expensive sensor or an electronic controller, and it is possible to simplify the construction of the device for locking the breaker operation switch, and it is possible to easily manufacture the key switch for the lock on the switch panel without installing the sensor or the controller, It can be easily installed on the switch panel after the switch is electrically connected to the switch off switch so that the function for locking the switch on the circuit breaker can be easily added even in the case of a conventional on- , It becomes possible to easily maintain and repair the circuit breaker operation switch locking device.

It is to be understood by those skilled in the art that the present invention may be embodied in many other forms without departing from the spirit and scope of the invention,

Accordingly, the above-described embodiments are to be considered illustrative and not restrictive, and all embodiments within the scope of the appended claims and their equivalents are intended to be included within the scope of the present invention.

1: On-site control panel with breaker operation switch lock
10: Display section 20: Circuit breaker on switch
21: On switch lock key switch 22, 51: On switch lock status lamp
30: Circuit breaker off switch 31: Off switch lock switch
32, 52: Off switch lock status lamp 40: Breaker reset switch
50: Key switch for integrated locking

Claims (3)

A display unit 10 for displaying measured data and a circuit breaker CB for turning off power when an over-voltage or an over-voltage is generated, (LCP) in which an On switch 20 and a Breaker Off switch 30 are provided on a control panel,
The on-off switch 20 is electrically connected to the on-off switch 20 for turning on the on-off switch so that the on-off switch 20 can not lock the on- A key switch 21 for locking an On switch for releasing the lock state; (1) having a circuit breaker operation switch locking function.

The method according to claim 1,
The breaker is electrically connected to the breaker off switch 30 which turns off the breaker so that the breaker off switch 30 can not lock the breaker off, (Key Switch) 31 for releasing an OFF switch for releasing the lock state; (1) having a circuit breaker operation switch locking function.
3. The method of claim 2,
The on switch lock key switch 21 and the off switch lock key switch 31 are integrated to electrically connect the breaker on switch 20 to turn on the breaker, On switch 20 prevents the breaker from being turned on or releases the lock state,
The breaker is electrically connected to the breaker off switch 30 which turns off the breaker so that the breaker off switch 30 can not lock the breaker off, Lock state for releasing the locked state of the circuit breaker when the circuit breaker is in the locked state.
KR1020150036960A 2015-03-17 2015-03-17 The Local Control Panel With Function of locking Circuit Breaker Switch KR20160112085A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150036960A KR20160112085A (en) 2015-03-17 2015-03-17 The Local Control Panel With Function of locking Circuit Breaker Switch

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Application Number Priority Date Filing Date Title
KR1020150036960A KR20160112085A (en) 2015-03-17 2015-03-17 The Local Control Panel With Function of locking Circuit Breaker Switch

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107861044A (en) * 2017-10-12 2018-03-30 上海正泰自动化软件系统有限公司 A kind of test device of ZN63A vacuum circuit-breaker handcarts control circuit board
CN109164752A (en) * 2018-09-08 2019-01-08 芜湖新兴铸管有限责任公司 A kind of electronic hang tag system and electronic hang tag method
KR20190126523A (en) * 2018-05-02 2019-11-12 엘에스산전 주식회사 Control device of circuit breaker
CN111927222A (en) * 2020-07-21 2020-11-13 立宏安全设备工程(上海)有限公司 Intelligent locking and listing device, system and method
KR20210080744A (en) 2019-12-23 2021-07-01 연세대학교 산학협력단 Smart LOTO System

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107861044A (en) * 2017-10-12 2018-03-30 上海正泰自动化软件系统有限公司 A kind of test device of ZN63A vacuum circuit-breaker handcarts control circuit board
KR20190126523A (en) * 2018-05-02 2019-11-12 엘에스산전 주식회사 Control device of circuit breaker
CN109164752A (en) * 2018-09-08 2019-01-08 芜湖新兴铸管有限责任公司 A kind of electronic hang tag system and electronic hang tag method
KR20210080744A (en) 2019-12-23 2021-07-01 연세대학교 산학협력단 Smart LOTO System
CN111927222A (en) * 2020-07-21 2020-11-13 立宏安全设备工程(上海)有限公司 Intelligent locking and listing device, system and method
CN111927222B (en) * 2020-07-21 2021-12-10 立宏安全设备工程(上海)有限公司 Intelligent locking and listing device, system and method

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