KR20170047760A - Assembling Structure of Automatic Power Transfer Unit - Google Patents

Assembling Structure of Automatic Power Transfer Unit Download PDF

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Publication number
KR20170047760A
KR20170047760A KR1020150148224A KR20150148224A KR20170047760A KR 20170047760 A KR20170047760 A KR 20170047760A KR 1020150148224 A KR1020150148224 A KR 1020150148224A KR 20150148224 A KR20150148224 A KR 20150148224A KR 20170047760 A KR20170047760 A KR 20170047760A
Authority
KR
South Korea
Prior art keywords
apu
earth leakage
leakage breaker
fastening
cable
Prior art date
Application number
KR1020150148224A
Other languages
Korean (ko)
Inventor
박근용
Original Assignee
엘에스산전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020150148224A priority Critical patent/KR20170047760A/en
Publication of KR20170047760A publication Critical patent/KR20170047760A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents

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  • Breakers (AREA)

Abstract

The present invention relates to an automatic power transfer unit (APU) assembly structure, and more specifically, to an APU assembly structure to prevent damage to a cable connected to a circuit breaker during assembly in an APU with the circuit breaker. According to one embodiment of the present invention, the APU assembly structure comprises: a circuit breaker having an emergency power connection unit on one side; an APU main body having a reception unit of the circuit breaker in a part and including a normal power supply unit; and a cable to connect the emergency power connection unit and the normal power supply unit. A first fastening unit detachably attached in a sliding or insertion manner is installed on one side of the reception unit, and a second fastening unit capable of being coupled to the first fastening unit by a sliding or insertion manner is installed in a part of the circuit breaker.

Description

[0001] The present invention relates to an assembling structure of an APU,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an assembly structure of an APU, and more particularly, to an assembly structure of an APU in an APU having an earth leakage breaker to prevent damage to cables connected to the earth leakage breaker.

Generally, an APU (Automatic Power Transfer Unit (APU); or ATU, ATS) is installed in a household distribution board that distributes electricity to factories, buildings, large residential areas, and public houses and buildings In case of interruption of normal (commercial) power supply due to power outage or accident, it is automatically switched to emergency power source to minimize inconvenience by operating necessary equipment (load of emergency light, security equipment, boiler etc.) And then supplies commercial power to the household to supply power continuously.

APU is equipped with a circuit breaker inside and outside the emergency power supply line, and a load (emergency) load is connected to the power output unit so that crime prevention and fire function, visitor identification service, emergency call service, It is an automatic power switching device that enables functions such as constant / emergency power supply to be maintained. Here, the earth leakage breaker may be built in or enclosed in the APU, and may be classified into a horizontal or vertical type product.

FIG. 1 is a plan view of an APU according to the prior art, and FIG. 2 shows a state where a main body and an earth leakage breaker are connected in an APU according to a related art. Fig. 3 is a bottom view of the earth leakage breaker in Fig. 2. Fig.

Power is supplied to the (emergency) load (9, wall pad, terminal box, boiler, etc.) connected to the power output unit 3 when commercial power is inputted to the general power supply unit 2 of the APU main body 1.

When the commercial power supply is interrupted due to a power outage or an accident, the general power supply 2 automatically switches to the emergency power supply 2 by the operation (3 to 7 seconds after) of the control unit (not shown) in the APU main body 1 The emergency power is inputted to the emergency power supply 7 of the earth leakage breaker 5 by the emergency power supply line of the building. The inputted emergency power supply is connected to the emergency power connection 6 and the general power supply 2 to supply power to the emergency load 9 connected to the power output unit 3 to start the facility.

The connection of the emergency power connection unit 6 is automatically disconnected by the operation of the control unit (not shown) of the APU main body 1 (after 3 to 7 seconds), and the power of the commercial power supply is automatically switched to the normal power supply unit (2), and power is supplied to the emergency load (9) connected to the power output unit (3).

The earth leakage breaker 5 is assembled to the APU main body 1 in combination with the APU according to the prior art. The assembly procedure is as follows. First, the cable 8 extending from the main body 1 is coupled to the emergency power source connection portion 6 through a terminal groove (not shown) on the side of the earth leakage breaker 5. The earth leakage breaker 5 is placed on the receiving portion 1a of the main body 1 in a state where the cable 8 is assembled to the earth leakage breaker 5. [ At this time, after the screw holes 5a, 5b of the earth leakage breaker 5 are aligned with the screw holes 1b, 1c of the main body 1, the earth leakage breaker 5 is inserted into the housing 1 To the portion 1a.

In this process, the cable 8 should be inserted into the cable receiving portion 1d. However, it is not easy to insert the cable 8 into the cable receiving portion 1d. In the process of manually screwing the cable 8 into the cable receiving portion 1d, the cable 8 is bent or the cover is peeled off during the screwing process.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an assembling structure of an APU for preventing damage to a cable connected to an earth leakage breaker when assembled.

An assembly structure of an APU according to an embodiment of the present invention includes an earth leakage breaker having an emergency power connection part at one side thereof; An APU main body in which a receiving portion of the earth leakage breaker is formed at a portion thereof and a general power source unit is provided; And a cable for connecting the emergency power connection part and the general power supply part, wherein a first fastening part detachable by sliding or fitting is formed on one side of the accommodation part, and a part of the earth leakage breaker is slidably inserted into the first fastening part, Or a second fastening portion capable of being engaged by a fitting method is formed.

Here, the first fastening portion may be a rectangular parallelepiped protrusion, and the second fastening portion may be a groove corresponding to the protrusion.

Further, a screw hole is formed at the other side of the receiving portion.

In addition, the first fastening part may be formed as a '-shaped protrusion, and the second fastening part may be formed as an' b '-shaped protrusion.

In addition, the second fastening portion is formed as a straight groove.

In addition, a cable receiving part for receiving the cable is formed at one side of the receiving part, and a fixing part for downwardly folding the end part of the wall constituting the cable receiving part is formed in an annular shape, and an annular protrusion And can be engaged with the fixing portion.

According to the assembly structure of the APU according to the embodiment of the present invention, the bolt connection is eliminated in the portion where the cable is formed, and the fastening means by the slimming method is provided to prevent the coating of the cable from being peeled off.

1 is a top view of an APU according to the prior art.
2 shows the connection of the main body and the earth leakage breaker in the APU according to the prior art.
FIG. 3 shows a state where the earth leakage breaker is turned upside down in FIG.
4 is a top view of an APTU according to an embodiment of the present invention.
Fig. 5 shows a state in which the earth leakage breaker is separated from the APU main body in Fig.
FIG. 6 shows a state where the earth leakage breaker is turned upside down in FIG.
7 is a perspective view of a main body accommodating portion according to an embodiment of the present invention.
8 is a partial perspective view of a mounting portion of a main body accommodating portion and an earth leakage breaker according to an embodiment of the present invention.
9 is a partial perspective view of a mounting portion of a main body accommodating portion and an earth leakage breaker according to another embodiment of the present invention.
FIG. 10 is an end view of an electric circuit breaker according to another embodiment of the present invention; FIG.
11 is a partial perspective view of an earth leakage breaker according to another embodiment of the present invention.
12 is an assembled cross-sectional view of an earth leakage breaker and a receiving portion according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to illustrate the present invention in a manner that allows a person skilled in the art to easily carry out the invention. And does not mean that the technical idea and scope of the invention are limited.

FIG. 4 is a plan view of an APU according to an embodiment of the present invention, and FIG. 5 is a view illustrating a state where the earth leakage breaker is detached from the APU main body in FIG. FIG. 6 shows a state where the earth leakage breaker is turned upside down in FIG. Fig. 7 is a perspective view of the main body accommodating portion, and Fig. 8 is a partial perspective view of the mounting portion of the main body accommodating portion and the earth leakage breaker. The assembling structure of the APU according to each embodiment of the present invention will be described in detail with reference to the drawings.

The assembling structure of the APU according to an embodiment of the present invention includes an earth leakage breaker 30 having an emergency power connection 31 at one side thereof; An APU main body 10 in which a housing portion 20 of the earth leakage breaker 30 is formed and a general power source portion 11 is provided; And a cable 40 connecting the emergency power connection unit 31 and the general power supply unit 11. The first connection unit 22 can be detachably attached to one side of the accommodation unit 20 by sliding or fitting, And a second fastening part 36 is formed on a part of the earth leakage breaker 30 so that the second fastening part 36 can be engaged with the first fastening part 22 by a sliding or fitting method.

The APU may include a main body 10 and a receiving portion 20 provided at one side of the main body 10. The main body 10 and the accommodating portion 20 may be made of an injection-molded material integrally formed. The main body 10 has a predetermined height, and various circuits and wirings including a control unit (not shown) are provided therein. The accommodating portion 20 has a lower height than the main body and is a portion where the earth leakage breaker 30 can be mounted.

A control unit (not shown) may be formed in the main body 10 for the purpose of switching between a normal (commercial) power source and an emergency power source circuit.

The main body 10 is provided with a plurality of terminal portions. The terminal unit may include a normal power supply unit 11 and a general power output unit 12. [ The general power source unit 11 may be provided on one side of the main body 10 and the general power source unit 12 may be provided on the other side of the main body 10. [ A power source supplied from a power source such as a KEPCO is connected to the general power source 11. Various loads 50 are connected to the general power output section 12. [ The load 50 includes a wall pad, a terminal box, a boiler, etc., and is constantly operated so that a crime prevention and fire function, a visitor identification service, an emergency call service, and a power supply for a winter boiler can be constantly maintained.

The accommodating portion 20 is provided on one side of the main body 10. The receiving portion 20 may be formed integrally with the case of the main body 10. [ The accommodating portion 20 can be formed to be generally flat at an area where the earth leakage breaker 30 can be accommodated. The receiving portion 20 may be provided with a mounting portion 21 on which the earth leakage breaker 30 can be installed and a cable receiving portion 25 through which the cable 40 can be received.

The mounting portion 21 has a first fastening portion 22 formed on one side thereof. The first fastening portion 22 may be formed as a projection. For example, the first fastening portion 22 may be formed as a projection formed in a rectangular parallelepiped shape. A plurality of first fastening portions 22 may be provided.

The mounting portion 21 is provided with a first bolt hole 23 for screw connection on the other side thereof.

The cable receiving portion 25 may be formed as a wall formed on one side of the mounting portion 21. [ The cable receiving portion 25 has a receiving space in which the cable 40 can be received.

The earth leakage breaker 30 is provided for connection and disconnection of the emergency power supply line. The earth leakage breaker (30) is provided with an emergency power connection part (31) at one side and an emergency power source part (32) at the other side.

The emergency power supply unit 32 is a portion to which the emergency power supply is inputted. The emergency power source 32 is connected to a power source which operates in an emergency.

The emergency power connecting portion 31 is a portion connected to the general power source 11 of the main body 10.

The earth leakage breaker (30) is provided with a switch (33). The switch 33 may be manually or automatically switched to the on / off position to connect or disconnect the emergency power supply circuit.

A terminal portion inlet (not shown) is provided at one side portion 34 of the earth leakage breaker 30. One end of the cable 40 can be inserted into the terminal portion inlet (not shown).

A second fastening portion (36) is formed under the earth leakage breaker (30). The second fastening portion 36 may be formed in the shape of a groove corresponding to the first fastening portion 22. The second fastening part 36 may be coupled to the first fastening part 22 by a fitting method or a sliding method. Accordingly, the earth leakage breaker 30 is coupled to the receiving portion 20 of the main body 10. 8 is a partial perspective view of the mounting portion 21 of the receiving portion 20 of the main body 10 and the earth leakage breaker 30. As shown in Fig. The cable receiving portion 25 is cut in the receiving portion 20 so that only a part of the mounting portion 21 is shown.

A second bolt hole (37) is provided below the earth leakage breaker (30). The second bolt hole 37 is formed at a position corresponding to the first bolt hole 23. Also, the second bolt hole 37 may be formed to penetrate the earth leakage breaker 30 vertically. The user can stably engage the earth leakage breaker 30 with the receiving portion 20 by engaging the screw so as to pass through the second bolt hole 37 and the first bolt hole 23 from the upper portion of the earth leakage breaker 30 .

The operation of the assembling structure of the APU according to an embodiment of the present invention is as follows. The end of the cable 40 extending from the main body 10 is connected to the emergency power connection 31 through a terminal portion inlet (not shown) formed in one side portion 34 of the earth leakage breaker 30. In this state, the user engages the earth leakage breaker 30 with the mounting portion 21 in a sliding manner so that the second fastening portion 36 is fitted into the first fastening portion 22. At this time, there is no fastening means such as a bolt in the portion where the cable 40 is formed, thereby eliminating the risk of peeling off the cover. The cable 40 can be naturally inserted into the cable receiving portion 25 and the earth leakage breaker 30 can be mounted to the receiving portion 20 of the main body 10. [

When the general (main) power source is inputted to the general power source 11, the power is supplied to the load connected to the normal power source 12 (loads such as various terminal boxes or boilers). The power supply line is automatically switched to the emergency power supply connection portion 31 of the earth leakage breaker 30 by the control portion (control circuit) of the main body 10, The emergency power is supplied to the emergency power supply 32 of the circuit breaker 30. [ The emergency power source is supplied to the load connected to the normal power output unit 12 via the emergency power source connection unit 31. Thereafter, when the normal power is restored, the control unit of the main body 10 disconnects the connection of the emergency power connection unit 31, and the normal power is connected to the normal power supply unit 11 so that the normal power is supplied to the load 50. [

Another embodiment of the present invention is shown in Fig.

In this embodiment, the first fastening portion 22e of the main body 10 may be formed as a T-shaped protrusion. In addition, the second fastening portion 36e of the earth leakage breaker 30 may be formed as a T-shaped groove. Therefore, the second fastening portion 36e of the earth leakage breaker 30 may be inserted into the first fastening portion 22e of the receiving portion 20 in a sliding manner so as to be engaged with the first fastening portion 22e. According to this, there is an effect that the coupling force between the first engagement portion 22e and the second engagement portion 36e is improved.

Another embodiment of the present invention is shown in Fig.

In this embodiment, the first fastening portion 22a of the main body 10 may be formed as a '-shaped projection. In addition, the second fastening portion 36a of the earth leakage breaker 30 may be formed as a b-shaped protrusion. Therefore, the second fastening portion 36a of the earth leakage breaker 30 can be inserted into the first fastening portion 22a of the accommodating portion 20 so as not to be separated by being inserted in a sliding manner. Thereby, there is an effect that the coupling force between the first fastening part 22a and the second fastening part 36a is improved.

Another embodiment of the present invention is shown in Fig.

In this embodiment, the second fastening portion 36b is formed in the shape of a straight groove in the previous embodiment. Accordingly, when the earth leakage breaker 30 is inserted into the accommodating portion 20 in a sliding manner, the second engaging portion 36b is inserted in the first engaging portion 22a in such a manner that no force acts in the opposite direction The coupling state is not eliminated.

12 is a cross-sectional view illustrating a connection of an earth leakage breaker and a receiving portion according to another embodiment of the present invention.

The end portion of the wall constituting the cable receiving portion 25 in the accommodating portion 20 is bent downwardly in the form of a ring to form the fixing portion 24.

An annular protrusion (38) is formed on the front surface of the earth leakage breaker (30) so as to be engaged with the fixing portion (24). Since the engagement of the protruding portion 38 and the fixing portion 24 is additionally provided in addition to the engagement of the first fastening portion 22 and the second fastening portion 36, .

According to the assembling structure of the APU according to each embodiment of the present invention, the bolt connection is eliminated from the portion where the cable is formed, and the fastening means by the slimming method is provided to prevent the coating of the cable from being peeled off.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. That is, the scope of protection of the present invention should be construed according to the following claims, and all technical ideas which are within the scope of the same should be interpreted as being included in the scope of the present invention.

10 Body 11 General power supply
12 power output unit 20 accommodating unit
21 mounting portion 22, 22a first fastening portion
23 first bolt hole 24 fixing portion
25 Cable receptacle 30 Earth leakage breaker
31 Emergency Power Connection 32 Emergency Power Supply
33 switch 34 side portion
36, 36a, 36b Second fastening portion 37 Second bolt hole
38 protrusion 40 cable
50 load

Claims (6)

An earth leakage breaker having an emergency power connection on one side;
An APU main body in which a receiving portion of the earth leakage breaker is formed at a portion thereof and a general power source unit is provided;
And a cable connecting the emergency power connection unit and the general power supply unit,
And a second fastening part capable of being engaged with the first fastening part by a sliding or fitting method is formed in a part of the earth leakage breaker Assembly structure of APU. The assembly structure of an APU according to claim 1, wherein the first fastening portion is formed of a rectangular parallelepiped protrusion, and the second fastening portion is formed of a groove portion corresponding to the protrusion. The assembling structure of an APU according to claim 1, wherein a screw hole is formed on the other side of the receiving portion. The assembly structure of an APU as claimed in claim 1, wherein the first fastening portion is formed of a '' -shaped protrusion, and the second fastening portion is formed of an 'b' -shaped protrusion. The assembly structure of an APU according to claim 4, wherein the second fastening portion is formed as a straight groove. 2. The circuit breaker according to claim 1, wherein a cable accommodating portion for accommodating the cable is formed at one side of the accommodating portion, and an end portion of the wall constituting the cable accommodating portion is formed with a fixing portion bent downward in a ring shape, And the projecting portion of the APU can be engaged with the fixing portion.

KR1020150148224A 2015-10-23 2015-10-23 Assembling Structure of Automatic Power Transfer Unit KR20170047760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150148224A KR20170047760A (en) 2015-10-23 2015-10-23 Assembling Structure of Automatic Power Transfer Unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150148224A KR20170047760A (en) 2015-10-23 2015-10-23 Assembling Structure of Automatic Power Transfer Unit

Publications (1)

Publication Number Publication Date
KR20170047760A true KR20170047760A (en) 2017-05-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150148224A KR20170047760A (en) 2015-10-23 2015-10-23 Assembling Structure of Automatic Power Transfer Unit

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KR (1) KR20170047760A (en)

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