JP2009055732A - Drawer type circuit breaker, terminal device of drawer type circuit breaker, and interphase insulating panel of terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drawer type circuit breaker which can be stored in a housing without any problem even if there is a partition board inside the housing of an enclosed switchboard, etc. <P>SOLUTION: The drawer type circuit breaker comprises: a first insulating panel portion disposed between the phases of a plurality of input-side terminals; a second insulating panel portion disposed between the phases of a plurality of output-side terminals; a separating portion disposed between the first insulating panel portion and the second insulating panel portion; and fragile portions disposed between the first insulating panel portion and the separating portion and between the second insulating panel portion and the separating portion, respectively. An interphase insulating panel which can separate the separating portion from the first insulating panel portion and the second insulating panel portion by the fragile portions is mounted on a terminal device. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drawer type circuit breaker housed in a casing such as a closed switchboard so as to be drawable, a terminal device mounted on the drawer type circuit breaker, and an interphase insulating plate mounted on the terminal device. is there.

  A conventional terminal device for a drawer type circuit breaker includes a terminal block made of an insulating molding and fixed to a pair of angles provided between a pair of side plates. In this terminal block, an R-phase input-side terminal, an S-phase input-side terminal, and a T-phase input-side terminal are disposed on the upper side, which is normally disposed above, and an R-phase output-side terminal is disposed below the terminal block. An S-phase output-side terminal and a T-phase output-side terminal are attached.

  Further, the terminal block is formed with a vertical groove between the R-phase input-side terminal and output-side terminal and the S-phase output-side terminal and input-side terminal. Similarly, the S-phase input-side terminal and output A vertical groove is formed between the side terminal, the T-phase input side terminal, and the output side terminal, and an interphase insulating plate is fitted in each of the grooves, and between the R-phase and S-phase terminals and between the S-phase and the T-phase. Phase terminals are insulated (for example, see Patent Document 1). In addition, the closed switchboard which accommodates a drawer-type circuit breaker is partitioned by a partition plate into a bus bar room, a cable room, and a drawer-type device room in which a drawer-type circuit breaker is housed (for example, Patent Document 2). reference).

Japanese Patent No. 3853064 JP-A-5-227616

  The terminal device of the conventional drawer-type circuit breaker configured as described above is the interphase provided in the terminal device of the drawer-type circuit breaker when the drawer-type circuit breaker is housed in the enclosure of the closed switchboard. There has been a problem that the insulating plate may come into contact with the partition plate of the closed switchboard and the drawer type circuit breaker may not be housed in the housing.

  The present invention has been made to solve such a problem in the conventional apparatus, and even if a partition plate is provided in a casing such as a closed switchboard, it can be stored in the casing without any trouble. The purpose is to obtain a draw-out type circuit breaker that can be used.

  Another object of the present invention is to obtain a terminal device that can accommodate a drawer-type circuit breaker in the casing without any trouble even if a partition plate is provided in the casing such as a closed switchboard. It is a thing.

  Furthermore, the present invention provides a terminal device for a drawer-type circuit breaker that can accommodate the drawer-type circuit breaker in the casing without any trouble even if a partition plate is provided in the casing such as a closed switchboard. The object is to obtain an interphase insulating plate to be attached to the board.

  A drawer type circuit breaker according to the present invention is housed in a casing such as a switchboard so that it can be pulled out and connected to a connection conductor provided in the casing to open and close an electrical circuit including the connection conductor. A drawer-type circuit breaker comprising a main body, a terminal device attached to the drawer-type circuit breaker body, and an interphase insulating plate attached to the terminal device, wherein the terminal device is the circuit breaker A plurality of input-side terminals connected to the input side of the main body, a plurality of output-side terminals connected to the output side of the drawer-type circuit breaker body, the plurality of input-side terminals, and the plurality of output-side terminals; A terminal block arranged corresponding to each phase, and the interphase insulating plate includes a first insulating plate portion disposed between phases of the plurality of input side terminals and a phase between the plurality of output side terminals. A second insulating plate portion disposed on the front side, and the first insulating plate portion and the front side A separation portion provided between the second insulating plate portion, a portion between the first insulating plate portion and the separation portion, and a portion between the second insulating plate portion and the separation portion. Each of the fragile portions, and the separation portion is configured to be detachable from the first insulating plate portion and the second insulating plate portion by the fragile portion, A first engaging portion that detachably engages one insulating plate portion, and a second engaging portion that detachably engages the second insulating plate portion.

  A terminal device for a drawer type circuit breaker according to the present invention is a terminal device attached to a drawer type circuit breaker body housed in a drawer such as a switchboard so that it can be pulled out. A plurality of input-side terminals connected to the input side of the main body, a plurality of output-side terminals connected to the output side of the drawer-type circuit breaker body, the plurality of input-side terminals, and the plurality of output-side terminals; And a terminal block arranged corresponding to each phase, the terminal block detachably engaging a first insulating plate portion disposed between phases of the plurality of input side terminals. A joint portion; a second engagement portion that detachably engages a second insulating plate portion disposed between phases of the plurality of output side terminals; and the input side terminal and the output side terminal. A partition plate engaging portion that can be inserted into the partition plate and can be engaged with a partition plate that partitions the input side terminal and the output side terminal. Those were.

  Further, the interphase insulating plate of the terminal device according to the present invention is an interphase insulating plate attached to a terminal device of a draw-out type circuit breaker housed in a casing such as a switchboard so as to be capable of being pulled out. A first insulating plate portion disposed between the phases of the input side terminals, a second insulating plate portion disposed between the phases of the plurality of output side terminals of the terminal device, and the first insulating plate portion. And a separation portion provided between the first insulation plate portion and the second insulation plate portion, and between the first insulation plate portion and the separation portion, and between the second insulation plate portion and the separation portion. Each of which is provided between the first insulating plate portion and the second insulating plate portion. The weak portion is provided between the first insulating plate portion and the second insulating plate portion.

  According to the drawer type circuit breaker according to the present invention, the terminal device includes a plurality of input terminals connected to the input side of the circuit breaker body and a plurality of outputs connected to the output side of the drawer type circuit breaker body. And a terminal block in which a plurality of input terminals and a plurality of output terminals are arranged corresponding to each phase, and the interphase insulating plate is disposed between phases of the plurality of input terminals. 1 insulating plate portion, a second insulating plate portion disposed between phases of the plurality of output side terminals, and a separation portion provided between the first insulating plate portion and the second insulating plate portion And a fragile portion provided between the first insulating plate portion and the separating portion and between the second insulating plate portion and the separating portion, respectively, and the separating portion is the first by the fragile portion. The terminal plate is configured to be separable from the insulating plate portion and the second insulating plate portion, and the terminal block includes a first engaging portion that detachably engages the first insulating plate portion, and a second insulating member. And a second engaging portion that detachably engages the first insulating plate with the fragile portion even if a partition plate is provided in a casing such as a closed switchboard. By separating from the part and the second insulating plate part, it can be accommodated in the casing without being obstructed by the partition plate.

  Further, according to the terminal device of the drawer type circuit breaker according to the present invention, the plurality of input side terminals connected to the input side of the drawer type circuit breaker body and the output side of the drawer type circuit breaker body are connected. A plurality of output-side terminals, and a terminal block in which a plurality of input-side terminals and a plurality of output-side terminals are arranged corresponding to each phase, and the terminal block is disposed between phases of the plurality of input-side terminals. A first engagement portion that removably engages the first insulating plate portion and a second engagement that removably engages a second insulating plate portion disposed between the phases of the plurality of output side terminals. Since it has a partition plate engaging portion that is inserted between the joint portion and the input side terminal and the output side terminal and can be engaged with the partition plate that partitions between the input side terminal and the output side terminal, Even if a partition plate is provided in a housing such as, by attaching the separated first insulating plate portion and second insulating plate portion, The draw-out type circuit breaker can be stored in the housing without being obstructed by the cut plate, and the engagement with the partition plate is ensured by engaging the partition plate with the partition plate engaging portion. Can do.

  Furthermore, according to the interphase insulating plate of the terminal device of the present invention, the first insulating plate portion disposed between the phases of the plurality of input side terminals of the terminal device and the phase of the plurality of output side terminals of the terminal device are arranged. A second insulating plate portion provided, a separating portion provided between the first insulating plate portion and the second insulating plate portion, and between the first insulating plate portion and the separating portion; Each having a weak portion provided between the second insulating plate portion and the separating portion, and the separating portion can be separated from the first insulating plate portion and the second insulating plate portion by the weak portion. Since it is configured and configured, even if a partition plate is provided in a casing such as a closed switchboard, the separating portion is separated from the first insulating plate portion and the second insulating plate portion by the fragile portion. The drawer-type circuit breaker can be stored in the housing without any hindrance without being blocked by the partition plate.

Embodiment 1 FIG.
Hereinafter, the lead-out type circuit breaker according to the first embodiment of the present invention, the terminal device attached to the external circuit breaker, and the interphase insulating plate attached to the terminal device will be described with reference to the drawings.

1 is a perspective view showing the back surface of a drawer type circuit breaker according to Embodiment 1 of the present invention, FIG.
FIG. 3 is a perspective view showing the interphase insulating plate according to the first embodiment of the present invention from one side, FIG. 3 is a perspective view showing the interphase insulating plate from the other side, and FIG. 4 is an embodiment of the present invention. FIG. 5 is an explanatory view showing a state before the interphase insulating plate is attached to the terminal device in Embodiment 1, and FIG. 5 is an explanatory view showing a state in which the interphase insulating plate is attached to the terminal device in Embodiment 1 of the present invention. FIG. 6 is a perspective view of a main part showing a state in which the drawer-type circuit breaker according to Embodiment 1 of the present invention is housed in a casing of a closed switchboard.
FIG. 7 is an explanatory view showing a state before mounting the divided interphase insulating plate on the terminal device according to Embodiment 1 of the present invention, and FIG. 8 shows a state where the divided interphase insulating plate is mounted on the terminal device. FIG. 9 is a perspective view of the partition plate engaging portion.

  In FIG. 1 thru | or FIG. 9, the drawer type circuit breaker 100 is equipped with the drawer type circuit breaker main body 110, and is retractably accommodated in the housing | casing (not shown) of a closed switchboard. A terminal device 1 is mounted on the back surface of the drawer-type circuit breaker body 110. As is well known, the drawer-type circuit breaker body 110 includes a fixed contact and a movable contact, and interrupts the circuit by separating the movable contact from the fixed contact by operating an operation handle provided on the surface side. The circuit is closed by bringing the movable contact into contact with the fixed contact. Further, when an overcurrent flows through the circuit, the movable contact is automatically separated from the fixed contact by a tripping mechanism to shut off the circuit.

  The terminal device 1 includes an insulating terminal block 2 fixed between a pair of side plates 101 and 102 fixed to both sides of the drawer-type circuit breaker body 110. The terminal block 2 includes an R-phase input-side terminal 3, an S-phase input-side terminal 4, a T-phase input-side terminal 5, an R-phase output-side terminal 6, an S-phase output-side terminal 7, and a T-phase. The phase output side terminal 8 is fixed.

  The draw-out type circuit breaker 100 is normally housed in the enclosure of the closed switchboard in the vertical relationship shown in FIG. 1, and the R-phase input side terminal 3 and the S-phase input side terminal 4 are located above the terminal block 2. , And T-phase input side terminals 5 are arranged, and an R-phase output side terminal 6, an S-phase output side terminal 7, and a T-phase output side terminal 8 are arranged below the terminal block 2. . Accordingly, the R-phase input side terminal 3 and the R-phase output side terminal 6 are arranged corresponding to the upper and lower sides, and the S-phase input side terminal 4 and the S-phase output side terminal 7 are arranged corresponding to the upper and lower sides. The T-phase input side terminals 5 and the T-phase output side terminals 8 are arranged corresponding to each other in the vertical direction.

  The R-phase input side terminal 3, the S-phase input side terminal 4, and the T-phase input side terminal 5 are detachably attached to an input terminal (not shown) of the drawer type circuit breaker body 110 by screws or the like. The R-phase output side terminal 6, the S-phase output side terminal 7, and the T-phase output side terminal 8 are respectively connected to an output terminal (not shown) of the lead-out type circuit breaker body 110 by screws or the like. Removably connected. When the drawer-type circuit breaker 100 is housed in the enclosure of the closed switchboard, the R-phase input terminal 3, the S-phase input terminal 4, and the T-phase input terminal 5 are respectively connected to the enclosure of the closed switchboard. An R-phase output-side terminal 6, an S-phase output-side terminal 7, and a T-phase output-side terminal 8 are connected to a power supply-side connection conductor (not shown) provided in the body, respectively. It is connected to a load-side connection conductor (not shown) provided in the housing.

  The terminal block 2 has, on its surface side, between the R-phase input-side terminal 3 and the S-phase input-side terminal 4, and between the R-phase output-side terminal 6 and the S-phase output-side terminal 7, A first insulating plate insertion groove 21 extending linearly in the vertical direction of the figure is formed, and between the S-phase input side terminal 4 and the T-phase input side terminal 5 and between the S-phase output side terminal 7. And a T-phase output terminal 8 are formed with second insulating plate insertion grooves 22 extending linearly in the vertical direction of the figure.

  Both ends in the length direction of the first insulating plate insertion groove 21 and the second insulating plate insertion groove 22, that is, the upper end and the lower end in FIG. Further, a pair of first projections projecting in the width direction of the respective grooves on the inner walls of the first insulating plate insertion groove 21 and the second insulating plate insertion groove 22 on opposite sides of the upper ends thereof. A protruding portion 2a is formed.

  Furthermore, a pair of second protrusions projecting in the width direction of the respective grooves on the inner walls of the first insulating plate insertion groove 21 and the second insulating plate insertion groove 22 on opposite sides of the respective lower ends thereof. A protruding portion 2b is formed. In addition, a pair of the first insulating plate insertion groove 21 and the second insulating plate insertion groove 22 that protrude in the width direction of each groove is formed on the opposite inner walls of the substantially central portion in the length direction. The third protruding portion 2c is formed.

  In FIG. 4, only one inner wall of the first insulating plate insertion groove 21 is shown, but the other inner wall is the same, and the second insulating plate insertion groove 22 is also the first insulation. It is formed in the same manner as the plate insertion groove 21. The 1st projection part 2a and the 3rd projection part 2c comprise the 1st engaging part engaged with the below-mentioned 1st insulating board part, and the 2nd projection part 2b and the 3rd projection part 2c comprises the 2nd engaging part engaged with the below-mentioned 2nd insulating board part.

  Further, four partition plate engaging portions 11 are provided on the surface of the terminal block 2 to be engaged with partition plates described later provided in the enclosure of the closed switchboard. These partition plate engaging portions 11 include an upper R-phase input terminal 3, an S-phase input terminal 4, a T-phase input terminal 5, a lower R-phase output terminal 6, and an S-phase input terminal 5. They are arranged in a substantially horizontal direction between the output side terminal 7 and the T-phase output side terminal 8.

  As shown in FIG. 9, the partition plate engaging portion 11 includes a first positioning groove 11 a having a small groove width and a second positioning groove 11 b having a large groove width. The first positioning groove 11 a is a second positioning groove 11 a. Is formed at the center of the bottom of the positioning groove 11b. The first positioning groove 11a is used when the thickness of the partition plate 10 (see FIGS. 6 and 8) provided in the enclosure of the closed switchboard is large, and engages and engages with the partition plate 10. . The second positioning groove 11b is used when the partition plate 10 has a small thickness, and engages and engages with the partition plate 10. The partition plate 10 is positioned with respect to the terminal block 2 by engaging with the positioning groove 11a or 11b.

  The partition plate 10 may have a large thickness or a small thickness. However, in many cases, the partition plate 10 is a known value based on the design of the closed switchboard, and the first of the partition plate engaging portion 11 correspondingly corresponds to the first value. The groove widths of the positioning groove 11a and the second positioning groove 11b may be formed, and the number of positioning grooves is not limited to two, and may be two or more or one as necessary. .

  Next, the interphase insulating plate 9 mounted on the terminal block 2 of the terminal device 1 will be described. 2 and 3, the interphase insulating plate 9 is made of, for example, a thermoplastic resin, and includes a first insulating plate portion 9a, a second insulating plate portion 9b, and an interphase insulating plate. 9 is provided with a separating portion 9c which is located at a substantially central portion of the base plate 9 and is connected to the first insulating plate portion 9a and the second insulating plate portion 9b by a fragile portion 9d.

  The fragile portion 9d is formed by a concave groove having a substantially V-shaped cross section as shown in the figure. By bending the fragile portion 9d by hand and cutting it, the separating portion 9c is first insulated. It can be separated from the plate portion 9a and the second insulating plate portion 9b. In this case, the interphase insulating plate 9 is divided into two parts, a first insulating portion 9a and a second insulating portion 9b. Although not shown, the fragile portion 9d may be formed by a plurality of through-holes connected in place of the concave groove having a substantially V-shaped cross section.

  The first insulating plate portion 9a includes an end edge portion 9i and a side edge portion 9j formed to have a large plate thickness, and the plate thickness of the side edge portion 9j is set smaller than the plate thickness of the end edge portion 9i. It has a part. On both side surfaces of the side edge portion 9j on the side of the end edge portion 9i, there are provided first locking portions 9e made of a pair of ridges, and on both side surfaces of the side edge portion 9j on the opposite end edge portion 9i side. A second locking portion 9f made of a pair of ridges is provided. The plate thickness direction dimensions of the first locking portion 9e and the second locking portion 9f are the same as the plate thickness of the end edge portion 9i.

  The second insulating plate portion 9b includes a side edge portion 9k formed to have a large plate thickness, and a first edge made of a pair of ridges on both side surfaces of the side edge portion 9k on the end edge portion 9m side. A locking portion 9g is provided, and a second locking portion 9h made of a pair of ridges is provided on both side surfaces of the side edge portion 9k on the opposite end edge portion 9m side. The plate thickness direction dimensions of the first locking portion 9k and the second locking portion 9h are the same as the plate thickness of the end edge portion 9k.

  The separation portion 9c of the interphase insulating plate 9 includes a side edge portion 9n formed to have the same plate thickness as the side edge portions 9j and 9k of the first insulating plate portion 9a and the second insulating plate portion 9b. .

  In the drawer type circuit breaker 100 according to Embodiment 1 of the present invention configured as described above, first, the interphase insulating plate 9 when the partition plate 10 is not provided in the enclosure of the closed switchboard. The mounting of will be described.

  In FIG. 4, the interphase insulating plate 9 is in a state where a first insulating plate portion 9a, a second insulating plate portion 9b, and a separating portion 9c are integrally connected by a fragile portion 9d. The interphase insulating plate 9 is moved in the direction of arrow A from the position shown in FIG. 4 with respect to the terminal block 2, and the side edges 9 j and 9 k are inserted into the first insulating plate insertion grooves 21 of the terminal block 2. To do. A pair of first protruding portions 2a, second protruding portions 2b, and third protruding portions 2c are formed on both wall portions of the first insulating plate insertion groove 21, respectively. Since the distance between the pair of protruding portions is larger than the thickness of the side edge portions 9j and 9k of the interphase insulating plate 9, the relative positional relationship between the terminal block 2 and the interphase insulating plate 9 in the vertical direction is illustrated. 4, the interphase insulating plate 9 can be inserted into the first insulating plate insertion groove 21.

  Next, when the interphase insulating plate 9 is moved in the direction of arrow B in FIG. 4, as shown in FIG. 5, the first locking portion 9e of the first insulating plate portion 9a of the interphase insulating plate 9 and the second The engaging portions 9f engage with the first protruding portions 2a and the third protruding portions 2c of the first insulating plate insertion grooves 21 of the terminal block 2, respectively, and the second insulating plate portions 9b. The first locking portion 9g and the second locking portion 9h are respectively connected to the second protruding portion 2b and the third protruding portion 2c of the first insulating plate insertion groove 21 of the terminal block 2. Engage and fix. The first locking portions 9e and 9g provided on the first insulating plate portion 9a and the second insulating plate portion 9b are formed by bending the respective protrusions horizontally in the upper part of the figure. Since the portions 9e1 and 9g1 are provided, the bent portions 9e1 and 9g1 abut against the first projecting portion 2a and the second projecting portion 2b and are fixed at the positions.

  As described above, the interphase insulating plate 9 is mounted in the first insulating plate insertion groove 21 of the terminal block 2. Similarly, the interphase insulating plate 9 is also attached to the second insulating plate insertion groove 22 of the terminal block 2.

  As shown in FIG. 5, the two interphase insulating plates 9 mounted on the terminal block 2 include an R-phase input-side terminal 3 and an output-side terminal 6, an S-phase input-side terminal 4 and an output-side terminal 7. The phases are insulated, and the S-phase input terminal 4 and output terminal 7 and the T-phase input terminal 5 and output terminal 8 are insulated from each other. In this case, since no partition plate is provided in the enclosure of the closed switchboard, it is housed in the enclosure as it is, and the input side terminals 3, 4, 5 and the output side terminals 6, 7, 8 are connected to the load side connection conductors. Can be connected to the connection conductor on the power supply side and the connection terminal on the load side provided in the housing.

  Next, mounting of the interphase insulating plate 9 when the partition plate 10 is provided in the enclosure of the closed switchboard will be described.

  In this case, first, by separating and cutting the two weak portions 9d of the interphase insulating plate 9, the separating portion 9c is separated from the first insulating plate portion 9a and the second insulating plate portion 9b. It divides | segments into the 1st insulating board part 9a and the 2nd insulating board part 9b.

  The divided first insulating plate portion 9a and second insulating plate portion 9b are moved in the direction of arrow A shown in FIG. 7 and inserted into the first insulating plate insertion groove 21 of the terminal block 2, respectively. Next, when the first insulating plate portion 9a and the second insulating plate portion 9b are moved in the direction of arrow B, respectively, as shown in FIG. 8, the first insulating plate portion 9a The engaging portion 9e and the second engaging portion 9f are engaged with the first protruding portion 2a and the third protruding portion 2c of the first insulating plate insertion groove 21 of the terminal block 2, respectively. Fixed. In addition, the second insulating plate portion 9b includes a first locking portion 9g and a second locking portion 9h, which are the second protruding portions of the first insulating plate insertion groove 21 of the terminal block 2, respectively. 2b and the 3rd protrusion part 2c are engaged and fixed.

  As described above, the first locking portions 9e and 9g provided on the first insulating plate portion 9a and the second insulating plate portion 9b have the respective protrusions in the horizontal direction in the upper part of the figure. Since the bent portions 9e1 and 9g1 are bent, the bent portions 9e1 and 9g1 abut against the first protruding portion 2a and the second protruding portion 2b and are fixed at the positions.

  As shown in FIG. 8, the two first insulating plate portions 9 a attached to the terminal block 2 are provided between the phase between the R-phase input side terminal 3 and the S-phase input side terminal 4 and the S-phase input. The side terminals 4 and the T-phase input side terminals 5 are insulated from each other, and the two second insulating plates 9b are arranged between the R-phase output side terminal 6 and the S-phase output side terminal 7. And the S-phase output terminal 7 and the T-phase output terminal 8 are insulated from each other.

  In this case, the partition plate 10 is provided in the enclosure of the closed switchboard, but there is no separation portion 9c between the first insulating plate portion 9a and the second insulating plate portion 9b. When the circuit breaker 100 is housed in the housing, the partition plate 10 provided in the housing is inserted between the first insulating plate portion 9a and the second insulating plate portion 9b as shown in FIG. In this state, the input side terminals 3, 4, 5 and the output side terminals 6, 7, 8 are connected to the load side connection conductors to the power supply side connection conductors and the load side connection terminals provided in the housing. Can do.

  In this way, by dividing the two weak portions 9d of the interphase insulating plate 9 and separating the separating portion 9c, it is divided into the first insulating plate portion 9a and the second insulating plate portion 9b. Therefore, even when the partition plate 10 is present, the first insulating plate portion 9a can insulate the phases of the R-phase input terminal 3, the S-phase input terminal 4, and the T-phase input terminal 5 from each other. The two insulating plate portions 9b can insulate the phases of the R-phase output terminal 6, the S-phase output terminal 7, and the T-phase output terminal 8.

  As shown in FIG. 9, the partition plate engaging portion 11 has a first positioning groove 11 a and a second positioning groove 11 b to cope with a case where the thickness of the partition plate 10 is different. When the plate thickness of 10 is thin, the partition plate 10 can be securely fixed by being fitted into the positioning groove 11a, and when the plate thickness of the partition plate 10 is thick, by being inserted into the positioning groove 11b.

  As described above, the lead-out type circuit breaker 100 according to Embodiment 1 of the present invention can be separated from the first insulating plate portion 9a and the second insulating plate portion 9b at the substantially central portion of the interphase insulating plate 9. When the drawer-type circuit breaker 100 is housed, the fragile portion 9d is cut as necessary to separate the separation portion 9c and the first insulating plate portion 9a and the second insulation plate portion 9a. The terminal device 1 of the drawer type circuit breaker 100 accommodates the drawer type circuit breaker 100 without contacting the partition plate 10 of the closed switchboard. can do.

  In addition, the interphase insulating plate 9 according to Embodiment 1 of the present invention includes a weakened portion 9d, and the first insulating portion 9a and the second insulating portion 9d can be formed without using a jig by bending the weakened portion 9d by hand. It can be easily divided into the insulating portions 9b.

  Furthermore, since the terminal device 1 according to Embodiment 1 of the present invention is provided with the partition plate engaging portion 11, the partition plate 10 can be held. Further, since the positioning grooves 11a and 11b having different groove widths are provided, it is possible to cope with the case where the partition plate 10 has a different thickness.

It is a perspective view which shows the back surface of the drawer type circuit breaker in Embodiment 1 of this invention. It is a perspective view which shows the interphase insulation board in Embodiment 1 of this invention from one surface. It is a perspective view which shows the interphase insulation board in Embodiment 1 of this invention from the other surface. It is explanatory drawing which shows the state before mounting | wearing with the phase insulation board in the terminal device in Embodiment 1 of this invention. It is explanatory drawing which shows the state which mounted | wore the terminal device in Embodiment 1 of this invention with the phase insulation board. It is a principal part enlarged view after mounting | wearing with the phase insulation board of FIG. It is a perspective view of the principal part which shows the state which accommodated the drawer type circuit breaker in Embodiment 1 of this invention in the housing | casing of a closed switchboard. It is explanatory drawing which shows the state before mounting | wearing with the divided | segmented phase insulation board in the terminal device in Embodiment 1 of this invention. It is explanatory drawing which shows the state which mounted | wore the divided | segmented phase insulation board in the terminal device in Embodiment 1 of this invention. It is a perspective view of a partition plate engaging part.

Explanation of symbols

100 Pull-out type circuit breaker 100
DESCRIPTION OF SYMBOLS 110 Lead-out type circuit breaker body 1 Terminal device 101, 102 Side plate 2 Terminal block 3, 4, 5 Input side terminal 6, 7, 8 Output side terminal 21 First insulating plate insertion groove 22 Second insulating plate insertion groove 2a 1st protrusion part 2b 2nd protrusion part 2c 3rd protrusion part 11 Partition plate engaging part 11a 1st positioning groove 11b 2nd positioning groove 9 Interphase insulating plate 9a 1st insulating plate part 9b 2nd insulating board part 9c Separation part 9d Fragile part 9i End edge part 9j Side edge part 9e, 9k 1st engaging part 9f, 9h 2nd engaging part 9k Side edge part 9m Opposite edge part 9n side Edge 9e1, 9g1 Bent

Claims (6)

  A drawer-type circuit breaker body that is housed in a casing such as a switchboard and is connected to a connection conductor provided in the casing and opens and closes an electrical circuit including the connection conductor; and the drawer-type circuit breaker body A drawer type circuit breaker comprising a terminal device to be mounted and an interphase insulating plate to be mounted on the terminal device, wherein the terminal device has a plurality of inputs connected to the input side of the circuit breaker body A terminal block in which side terminals, a plurality of output terminals connected to the output side of the drawer type circuit breaker body, the plurality of input terminals and the plurality of output terminals are arranged corresponding to each phase And the interphase insulating plate includes a first insulating plate portion disposed between phases of the plurality of input side terminals and a second insulating plate portion disposed between phases of the plurality of output side terminals. And between the first insulating plate portion and the second insulating plate portion A separation portion, and a fragile portion provided between the first insulation plate portion and the separation portion and between the second insulation plate portion and the separation portion, and the separation portion. Is configured to be separable from the first insulating plate portion and the second insulating plate portion by the fragile portion, and the terminal block detachably engages the first insulating plate portion. And a second engagement part that detachably engages the second insulating plate part.   A terminal device attached to a drawer-type circuit breaker body that is housed in a casing such as a switchboard so that it can be pulled out, and a plurality of input-side terminals connected to the input side of the drawer-type circuit breaker body, A plurality of output-side terminals connected to the output side of the drawer-type circuit breaker body, and a terminal block in which the plurality of input-side terminals and the plurality of output-side terminals are arranged corresponding to each phase, and The terminal block is disposed between a phase of the plurality of output side terminals and a first engagement portion that removably engages a first insulating plate portion disposed between the phases of the plurality of input side terminals. A second engaging portion that detachably engages the second insulating plate portion, and is inserted between the input side terminal and the output side terminal and between the input side terminal and the output side terminal. A terminal device for a drawer type circuit breaker comprising a partition plate engaging portion that can be engaged with a partition plate that partitions the door.   The partition plate engaging portion includes a positioning groove for positioning the partition plate, and the positioning groove includes a plurality of positioning grooves corresponding to the partition plates having different plate thicknesses. Item 3. A terminal device for a drawer type circuit breaker according to Item 2.   An interphase insulating plate attached to a terminal device of a drawer type circuit breaker housed in a casing such as a switchboard so as to be capable of being pulled out, and disposed between phases of a plurality of input side terminals of the terminal device. Provided between the insulating plate portion, the second insulating plate portion disposed between the plurality of output side terminals of the terminal device, and the first insulating plate portion and the second insulating plate portion. And a fragile portion provided between the first insulating plate portion and the separating portion and between the second insulating plate portion and the separating portion, respectively. The separation part is configured to be separable from the first insulation plate part and the second insulation plate part by the fragile part.   5. The interphase insulating plate for a terminal device according to claim 4, wherein the fragile portion is configured by a groove having a substantially V-shaped cross section.   The said weak part was comprised by the some through-hole which penetrates the said interphase insulating board in the plate | board thickness direction, The interphase insulating board of the terminal device of Claim 4 characterized by the above-mentioned.

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