JP2007195353A - Connection device for mold switch and restoring method of power transmission path - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection device for mold switch and a restoring method of a power transmission path capable of simply detaching work of a temporary cable in a narrow distribution box in which a distribution switch is installed at a shorter power interruption time even if the cable is mounted. <P>SOLUTION: The connection device for mold switch includes: primary sand secondary side fixed molding portions 11, 12 having a fixed electrode; movable molding portion 16 having a movable electrode 50 connected to the fixed electrode 30 of the primary fixed molding portion 11; and a connection unit having a connection electrode for connecting its one end to the movable electrode 50 of the movable molding portion 16 and connecting the other end to the temporary cable. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mold switch connection device and a power transmission path restoration method.

  An example of a conventional power distribution switch and a mold switch used therefor will be described.

  As shown in FIG. 8, a distribution switch 100 in which an underground line high-voltage lead-in mold switch 103 is installed in a distribution box 102 is used to branch and open a high-voltage underground distribution line. The mold switch 103 is composed of a fixed mold part 110 and a movable mold part 115 that opens and closes a circuit by being connected to and separated from the fixed mold part 110, and includes three sets of the fixed mold part 110 and the movable mold part 115. The primary side of each fixed mold part 110 is connected to a mold bus 104 as a primary side conductor, and the secondary side of each fixed mold part 110 is connected to a secondary cable or a consumer cable constituting a high-voltage distribution line. A lead-in cable 105 is connected.

  For example, if a failure such as a defect occurs in the lead-in cable 105 (the position is indicated by F) and the cable needs to be replaced, etc., after removing the movable mold part 110 and cutting off the circuit, Remove the failed lead-in cable 105, connect a temporary cable such as the bypass cable 109 that powers the customer to the terminal fixing pipe 107 where the lead-in cable 105 is removed, and supply power to the consumer again. The part 115 is attached to restore the circuit, and the failed lead-in cable 105 is replaced while power is being supplied from the bypass cable 109 as a temporary cable to the consumer side.

  When the replacement of the failed lead-in cable 105 is completed, the movable mold portion 115 is removed again, the circuit is shut off, the bypass cable 109 as a temporary cable is removed, and the terminal fixing tube 107 from which the bypass cable 109 has been removed is attached. A new lead-in cable 105 is connected, and the movable mold portion 115 is reattached and connected to start normal operation.

  Therefore, after the accident occurs, the movable mold 15 is removed from before the pull-in cable 105 is removed to after the bypass cable 109 is installed as a temporary cable, and after the cable is replaced, from before the bypass cable 109 is removed to after the pull-in cable 105 is installed. During this period, the supply of power to the customer side is stopped, and the power outage time is longer.

  Moreover, the operation | work which removes / removes the lead-in cable 105 and the bypass cable 109 from the terminal fixing pipe 107 of the mold switch 103 is that the inside of the distribution box 102 is narrow, and the connection part of the cables 105 and 109 is high in airtightness. For this reason, the restoration work requires a great amount of labor and time, and as a result, longer power outages are required.

  Further, in order to connect the lead-in cable 105 to the terminal fixing tube 107, the cable terminal processing work such as stripping the coating of the outer layer and the insulating layer of the cable is performed around the terminal fixing tube 107 of the mold switch 103. In a state where the bypass cable 109 is connected to the secondary side of the mold switch 103, a sufficient space for the terminal processing work cannot be secured, and the restoration work is troublesome and complicated.

  As shown in FIGS. 9 to 11, in the conventional mold switch 103, the fixed mold part 110 has a primary side fixed mold part 111 and a secondary side fixed mold part 112, and these primary side A removable movable mold portion 115 that electrically connects the fixed mold portion 111 and the secondary side fixed mold portion 112 is configured to be fitted into the fixed mold portion 110. Such a movable mold part 115 is generally called a closed lid. The primary side fixed mold part 111 and the secondary side fixed mold part 112 have substantially the same structure.

  Further, the mold switch 103 includes a housing body 120 on the fixed side and a base part 121 that serves as a base plate when the mold switch 103 is installed. A housing part 122 of the side fixed mold part 111 and a housing part 123 of the secondary side fixed mold part 112 are formed.

  As shown in FIG. 11, these three sets of the primary housing part 122 and the secondary housing part 123 are formed in an L-shaped cylindrical shape bent at substantially right angles, and the longitudinal cylindrical parts 124, 125 and the lateral direction are formed. Cylinder portions 126 and 127. The vertical cylindrical portions 124 and 125 are arranged to face each other in the vertical direction, and the horizontal cylindrical portions 126 and 127 are arranged in parallel. In the primary side horizontal cylindrical portion 126, the primary mold bus bars 104 a to 104 c are arranged. The fixed electrode 130 connected to the terminal fixing tube 107 of the cable 105 is provided in the fixed electrode 130 connected to the secondary side and the lateral cylindrical portion 127 on the secondary side.

  As shown in FIG. 8, the mold switch 103 is installed in the distribution box 102, and the three mold bus bars 104a to 104c extend rightward in FIG.

  The mold switch 103 includes the fixed electrodes 130 and 131 in the openings 128 and 129 formed in the horizontal cylindrical portions 126 and 127 of the three sets of housing portions 122 and 123 as described above, and the openings 128 and 129 are provided. The fixed electrodes 130 and 131 and the movable electrodes 150 and 151 are connected to each other by inserting the three sets of movable electrodes 150 and 151 of the movable mold portion 115 into the inside.

  The fixed electrodes 130 and 131 have a plurality of electrode members 132 arranged radially in the radial direction with respect to the center line of the horizontal cylindrical portions 126 and 127, and face the inner sides of the electrode members 132. A main contact portion 133 is formed between the contact portions projecting from each other. Therefore, when the rod-shaped movable electrodes 150 and 151 are inserted and fitted to the fixed electrodes 130 and 131, the movable electrodes 150 and 151 are in contact with and electrically connected to the main contact portions 133 and 133, respectively. It becomes a state.

  An arc extinguishing chamber 135 formed by an arc extinguishing member 134 so as to promote the disappearance of the electric arc is provided adjacent to the main contact portion 133 outside the fixed electrodes 130 and 131 of the housing parts 122 and 123. ing.

  Further, in the housing parts 122 and 123, the primary mold bus bars 104 a to 104 c are connected to the upper vertical cylindrical part 124, and the secondary side of the terminal fixing tube 107 provided in the lower vertical cylindrical part 125 is connected. A cable 105 is connected. The mold bus bars 104a to 104c and the secondary cable 105 are connected to the electrode members of the fixed electrodes 130 and 131 by conductive members extending into the longitudinal cylindrical portions 124 and 125 and the lateral cylindrical portions 126 and 127, respectively. . Specifically, the primary side mold buses 104 a to 104 c are connected to the fixed electrode 130 of the primary side fixed mold part 111, and the secondary side cable 105 is connected to the fixed electrode 131 of the secondary side fixed mold part 112. The Accordingly, when the movable mold portion 115 is fitted and attached to the fixed mold portion 110, the primary and secondary side fixed electrodes 130 and 131 are bridged by the movable electrodes 150 and 151 and the bridging member 152, and the mold is opened and closed. The vessel 103 is closed.

  The movable mold portion 115 fitted and attached to the fixed mold portion 110 includes a housing main body 140 having three sets of primary side and secondary side movable mold portions 116 and 117 integrally formed and having housing portions 142 and 144. ing. Each housing part 142, 144 is formed in a lateral direction with one end opened, and two bifurcated movable electrodes 150, 151 extending from a closed end toward the opened end substantially along the center. have.

  These primary side and secondary side movable electrodes 150 and 151 are formed of rod-shaped electrode members, and are connected by bridging members 152 at the closed ends, respectively, and the primary side and secondary side of the fixed mold portion 103. When the movable mold part 115 is fitted to the fixed mold parts 111 and 112, the fixed electrodes 130 and 131 and the movable electrodes 150 and 151 of the primary side and secondary side fixed mold parts 111 and 112 are connected to each other to transmit the power. Is formed, and power is supplied from the power source on the primary side to the consumer on the secondary side. In addition, the movable mold portion 115 can be mounted on the housing body 120 on the fixed side by integrally combining the three housing portions 142 and 144 with the fastening member 146.

  In the conventional molded switch configured as described above, no means is provided for connecting the temporary cable as temporary power transmission means when a failure occurs in the retractable cable as the power transmission cable.

  The following Patent Document 1 shows an example of a structure for mounting an underground high-voltage lead-in switch in a supply distribution box that can be easily installed without using a special installation tool even in a narrow supply distribution box. Has been. This is because a recess is provided at the upper end of the opposite side edge of the plate body of the switch mounting bracket, and a certain length of protrusion is provided horizontally at the upper part on both sides of the mechanism board of the switch for supply. When fixing the switch mounting bracket to the device mounting angle in the distribution box, and mounting the switch to this switch mounting bracket, the protrusions on both sides of the mechanism board of the switch are respectively inserted into the recesses on both sides of the switch mounting bracket. Lock and support the switch in a rotatable manner, push the front lower part of the switch backward and rotate it around the projection as a rotating shaft, inside the recess composed of the plate and back plate on both sides of the switch mounting bracket And the switch is fixed to the switch mounting bracket.

Japanese Patent Laid-Open No. 2005-80323

  However, in order to introduce the switch mounting structure described above, it is necessary to replace most of the existing equipment. Even if it is effective for replacing the switch itself, the replacement of the secondary cable of the switch is not considered, so that the cable replacement work still takes time and effort.

  The present invention has been made in view of the above situation. Even in a narrow distribution box in which a distribution switch is installed, the present invention can be easily performed with a shorter power failure time and with a retractable cable attached. It is an object of the present invention to provide a mold switch connection device and a power transmission path restoration method that enable a cable to be attached and detached.

  The connection device for a mold switch according to the present invention includes a mold opening and closing device including a primary side and a secondary side fixed mold part having fixed electrodes, and a movable mold part having a movable electrode connected to the fixed electrode of the primary side fixed mold part. A connection device for use in a container having a connection unit having a connection electrode for connecting one end to a movable electrode of a movable mold portion and connecting the other end to a temporary cable. The connection device for a mold switch has an electrode protrusion provided at one end of the movable electrode and a connection socket provided at the tip of the connection electrode, and the connection socket is fitted into the electrode protrusion. It is characterized by being combined. Further, the connection unit is a right-angled tubular member having the connection electrode therein. Furthermore, the mold switch connection device is characterized in that the movable electrode is configured not to electrically connect the fixed electrodes of the primary side and secondary side fixed mold portions.

  Moreover, this invention is used for the mold switch provided with the primary side and secondary side fixed mold part which has a fixed electrode, and the movable mold part which has a movable electrode connected to the fixed electrode of a primary side fixed mold part. It is a connection apparatus, Comprising: It has a connection unit provided with the connection electrode for connecting one end to the fixed electrode of a primary side fixed mold part, and connecting the other end to a temporary cable. In this mold switch connection device, the connection electrode is preferably formed of a rod-shaped electrode member. Further, the connection unit can be a right-angled tubular member having a connection electrode therein.

  The method of the present invention is a mold switch comprising a primary side and secondary side fixed mold part having fixed electrodes, and a removable movable mold part having a movable electrode connected to the fixed electrode of the primary side fixed mold part. Is a method of restoring the power transmission path installed, and when a failure occurs in the cable on the secondary side, secure a temporary power transmission path by attaching a connection unit for the mold switch connection device to the movable mold part, and After the replacement and defective cable replacement, the connection unit is detached and the temporary power transmission path is released. In this power transmission path restoration method, an electrode protrusion is provided on the movable electrode, and the provisional power transmission line path is ensured by providing a connection socket at the tip of the connection electrode of the connection unit and fitting it into the electrode protrusion. be able to. Further, the connection unit has a right-angle tubular member, and the temporary cable can be connected to a connection electrode provided in the right-angle tubular member.

  Furthermore, the method of the present invention provides a removable movable having primary and secondary fixed mold parts having fixed electrodes, and movable electrodes connected to the fixed electrodes of the primary fixed mold part and the secondary fixed mold part. A method for restoring a power transmission path in which a mold switch equipped with a mold part is installed, and when a failure occurs in a cable on the secondary side, the movable mold part is removed and the connection unit of the connection device for the mold switch is connected. Secure the temporary power transmission path by attaching the electrode to the primary fixed electrode, replace the defective cable, remove the connection unit after completing the replacement of the defective cable, release the temporary power transmission path, and remove the movable mold part that was removed first It is characterized by being reinstalled. In this power transmission path restoration method, the power supply side cable can be connected to the primary side fixed mold part of the mold switch, and the secondary side cable can be connected to the secondary side fixed mold part. Further, in the power transmission path restoration method, the connection unit has a right-angle tubular member, a rod-shaped connection electrode is provided in the right-angle tubular member, a temporary cable is connected to the connection electrode, and the secondary side is connected. After replacing the defective cable, the connecting unit can be removed together with the temporary cable, and the movable mold portion can be attached again.

  According to the present invention, by connecting the temporary cable to the movable mold part via the connection unit, the temporary cable can be attached and detached even when the secondary side lead-in cable is attached. The power transmission path can be restored easily and with a short power outage time.

  1 to 3 show a configuration of a mold switch 3 according to an embodiment of the present invention.

  The mold switch 3 is mainly composed of a fixed mold part 10 and a movable mold part 15, and the basic structure of the fixed mold part 10 is substantially the same as the conventional mold switch described above. Therefore, the detailed description of the basic structure of the fixed mold portion 10 that is the same as the conventional structure is omitted.

  The movable mold portion 15 is used to provide a bypass cable when a failure or failure F occurs in any of the customer side cables 5 in the distribution or transmission path as shown in FIG. Normally, if the movable mold part 115 of the conventional example is used, it is not necessary to replace all the movable molds.

  The fixed mold part 10 of the mold switch 3 has a primary fixed mold part 11 and a secondary fixed mold part 12, and a removable movable mold part 15 is fitted into the fixed mold part 10.

  In the fixed mold part 10, the primary side and secondary side fixed mold parts 11 and 12 are preferably integrally formed in one housing. In the illustrated mold switch 3, three sets of unipolar types are provided. The three-pole mold switch is formed by integrally forming these three sets of one-pole mold switches into one housing. Can be configured.

  The primary side and secondary side fixed mold parts 11 and 12 of the fixed mold part 10 have substantially the same structure, and can be manufactured in a symmetrical structure in the vertical direction in the figure. The mold switch 3 is configured by fitting the corresponding movable mold parts 15 into the three sets of fixed mold parts 10 having the secondary fixed mold parts 11 and 12 respectively.

  The mold switch 3 has a single fixed-side housing body 20 as a whole, and the fixed mold portion 10 is accommodated in the housing main body 20, and three sets of primary-side fixed mold portions 11 are housings. It forms so that the part 22 and the housing part 23 of the secondary side fixed mold part 12 may be accommodated in one. The three sets of the primary housing portion 22 and the secondary housing portion 23 each have an L-shaped cylindrical shape bent substantially at a right angle, and are molded buses 4a to 4c on the primary side and on the secondary side. Cylindrical portions 24 and 25 to which the terminal fixing tubes 7 connected to the cable 5 are respectively attached, and horizontal cylindrical portions 26 and 27 on the side connected to the movable electrode 50 of the movable mold portion 15 are provided. The three sets of cylindrical portions 24 and 25 are arranged at positions opposed to each other in series, and the other three sets of horizontal cylindrical portions 26 and 27 are arranged back to back in an upright position in parallel with each other. The fixed electrode 30 connected to the primary mold bus bars 4 a to 4 c is provided in the horizontal cylindrical portion 26, and the secondary cable 5 is provided in another horizontal cylindrical portion 27. The fixed electrode 31 connected to is provided. Further, the housing body 20 has a flat base portion 21 that becomes a base plate when the mold switch 3 is installed, and three sets of housing portions are opposed to the base portion 21 in opposite directions. It is comprised so that the shape where 22 and 23 are arrange | positioned may be made.

  The illustrated mold switch 3 is installed in a vertical state in the distribution box 2, but is not limited to such a vertical state and can be installed in a horizontal state.

  The mold switch 3 is fixed in the openings 28 and 29 on the front side of the three sets of cylindrical portions 26 and 27 arranged in parallel, assuming that the surface on the side fitted to the movable mold portion 15 is the surface on the front side. Electrodes 30 and 31 are provided, respectively, and three sets of movable electrodes 50 and 51 of the movable mold portion 15 are inserted into the fixed electrodes 30 and 31, respectively, so that the fixed electrodes 30 and 31 and the movable electrodes 50 and 51 are connected. The

  The fixed electrodes 30 and 31 are arranged in a plurality of cylindrical portions 26 and 27 in the lateral direction of the housing portions 22 and 23 so as to face the center line of the cylindrical portions 26 and 27 in a diametrical direction or a radial direction. It has the electrode member 32, the contact part of each electrode member 32 protrudes so that it may oppose inside, and the main contact part 33 is formed between these contact parts, respectively. Therefore, when the rod-shaped movable electrodes 50 and 51 are inserted and fitted into the main contact portion 33 of the fixed electrodes 30 and 31, the movable inserted into the fixed electrodes 30 and 31. The electrodes 50 and 51 are brought into contact to be electrically connected.

  On the outer side of the fixed electrodes 30 and 31 of the housing portions 22 and 23, the arc extinguishing is performed so as to promote the disappearance of the electric arc generated when the movable electrodes 50 and 51 are brought into and out of contact with the fixed electrodes 30 and 31. Arc extinguishing chambers 35 surrounded by the members 34 are respectively provided adjacent to the main contact portion 33. In such arc extinguishing chambers 35, the occurrence of electric arcs is well suppressed and the arcs are extinguished quickly. It can be done.

  Further, in the housing parts 22 and 23, the mold bus bars 4 a to 4 c are connected to the opening part of the upper cylindrical part 24 in the drawing, and the secondary terminal fixing tube 7 is connected to the opening part of the lower cylindrical part 25. Is provided, and the secondary cable 5 is connected to the terminal fixing tube 7. Further, the mold buses 4a to 4c and the secondary cable 5 are connected to the electrodes of the fixed electrodes 30 and 31 by appropriate conductive members extending into the cylindrical portions 24 and 25 of the housing portions 22 and 23 and the cylindrical portions 26 and 27. Each is connected to a member. Therefore, the primary side mold buses 4 a to 4 c are connected to the fixed electrode 30 of the primary side fixed mold part 11, and the secondary side cable 5 is connected to the fixed electrode 31 of the secondary side fixed mold part 12. . Thereby, when the movable mold part 115 of the conventional example shown in FIGS. 8 to 11 is fitted and attached to the fixed mold part 10, the fixed electrodes 30 and 31 on the primary side and the secondary side are moved to the movable electrodes 150 and 151, respectively. And it is bridged by the bridging member 152 and the mold switch 3 is connected to be in a closed state.

  The movable mold portion 15 is fitted and attached to the fixed mold portion 10 as described above, and three sets of primary side and secondary side movable mold portions 16 and 17 are integrally formed, and three sets of A housing main body 40 having a housing part 42 of the primary movable mold part 16 and a housing part 44 of the secondary movable mold part 17 is provided. Each of the housing parts 42 and 44 is formed in a lateral direction with one end opened on the side corresponding to the fixed mold part 10, and the end opened from the closed end along substantially the center of the cylinder. Each has two movable electrodes 50 and 51 extending toward each other.

  These primary side and secondary side movable electrodes 50 and 51 are formed from rod-shaped electrode members, respectively, but they are connected by a bridging member, unlike the movable mold portion 115 in the mold switch 103 of the conventional example. However, when the movable mold part 15 is fitted to the fixed mold part 10, the fixed electrodes 30 and 31 of the primary side fixed mold part 11 and the secondary side fixed mold part 12 are not electrically connected.

  The movable electrode 50 on the primary side is provided with an electrode protrusion 53 having a substantially square cross section at the end fixed to the inside of the housing part 42, and a mounting part 43 formed at the rear part of the housing part 42. The mold switch connecting device according to the present invention is configured to project outward from a substantially central portion of the inside and to be connected to a connection receiving port 63 of a connection electrode 62 of a connection unit 60 described later. Forming. Moreover, the movable electrodes 50 and 51 can be made using a solid or hollow electrode member, and using a hollow electrode member is also preferable from the viewpoint of reducing the weight.

  The movable mold portion 15 is formed so that the three sets of housing portions 42 and 44 can be integrally assembled by an appropriate fastening member 46 and attached onto the housing body 20 on the fixed side. Such housing portions 42 and 44 are preferably made as one set, and if necessary, three sets of housing portions 42 and 44 are integrally formed as a housing of the movable mold portion 15 for three poles. It is also possible to do. Further, the lateral flange-shaped attachment portion 43 provided at the rear end portion of the housing portion 42 is threaded on the outer surface side, and the fastening ring of the connection unit 60 in which the corresponding threading is performed on the inner side. 64 is formed so that it can be connected by screwing.

  4 to 6 show a connection unit 60 of the connection device for a mold switch according to the present invention that is used when any failure occurs in any of the cables 5 on the secondary side.

  The mold switch connection device includes a movable mold section 15 and a connection unit 60 or 70.

  The connection unit 60 includes a right-angle tubular member 61 formed in a substantially L-shape, a connection provided in the right-angle tubular member 61, a connection receiving port 63 formed at one end, and the bypass cable 9 connected to the other end. And an electrode 62. Further, the connection unit 60 is provided with a fastening ring 64 at one end of the right-angled tubular member 61 and can be attached and fastened to the electrode protrusion 53 provided on the movable electrode of the movable mold portion 15. It is formed as follows. The electrode protrusion 53 of the movable electrode 50 can be formed in a polygonal shape such as a circle, a rectangle, or a hexagon in cross-sectional shape, and the connection unit 60 can be connected so as to have a receptacle having a cross-sectional shape corresponding to this. A receiving port 63 is formed.

  The connection receiving port 63 of the connection electrode 62 is fitted to the electrode protrusion 53 of one movable electrode 50 of the movable mold portion 15 so that the bypass cable 9 is connected to the movable electrode 50 via the connection electrode 62. It is configured. Further, the inner surface of the fastening ring 64 is threaded so that it can be screwed and connected to the screw of the mounting portion 43 of the movable mold portion 15.

  Therefore, when a failure such as disconnection occurs in the cable 5 on the secondary side, the connection receiving port of the connection unit 60 is connected to the electrode protruding portion 53 of the movable electrode 50 of the upper movable mold portion 15 of the cable where the failure has occurred. The connection electrode 62 is connected to the movable electrode 50 by fitting 63 and tightening the fastening ring 64 firmly, and the bypass cable 9 can be connected to the consumer side to supply power to the consumer side. Such a connection unit 60 is used when the bypass cable 9 is connected in a state where the movable mold portion 15 is attached, and the electrode protrusion 53 and the connection unit 60 are connected to the fixed electrode 30 through the movable electrode 50. Electric power is supplied to the consumer side through the connection receiving port 63, the connection electrode 62 and the bypass cable 9.

  In this case, if a customer-side main cutoff device is provided in the power transmission path, turn off the main cutoff device to confirm that the power transmission path is blocked and replace the cable. If this is performed, the safety of the replacement work can be secured, which is more preferable.

  Further, when a failure occurs in the secondary cable 5, the movable mold portion 15 is removed, the connection unit 60 is attached to the fixed electrode 30, and power is supplied to the consumer side via the bypass cable 9. For this, it is necessary to attach the connection unit 60 directly to the fixed electrode 30 of the primary fixed mold part 11 of the fixed mold part 10.

  In such a case, the tip of the connection electrode 62 of the connection unit 60 is formed in the same manner as the electrode portion of the movable electrode 50 as a rod-shaped solid or hollow electrode without the connection receiving port 63. Thus, it is necessary to be able to connect directly to the contact 32 of the fixed electrode 30. The connection unit used in such a case is shown in FIG.

  The connection unit 70 includes a right-angle tubular member 71 formed in a substantially L shape, a connection provided in the right-angle tubular member 71, a rod-shaped electrode portion formed at one end, and the bypass cable 9 connected to the other end. And a fastening ring 74 provided at one end of the right-angled tubular member 71 so that it can be attached to the lateral cylindrical portion 26 of the primary side fixed mold portion 11 and firmly fastened. Is formed. The illustrated connection unit 70 is used when the movable mold portion 15 is removed and the connection electrode 72 is directly connected to the fixed electrode 30, and the tip of the connection electrode 72 is formed in a straight rod shape. The connection electrode 72 is directly connected to the fixed electrode 30 of the fixed mold portion 10. Further, the connection electrode 72 can be made in any shape, such as a solid shape or a hollow shape, and the cross-sectional shape of the tip portion is formed in a shape corresponding to the cross-sectional shape of the main contact portion 33 of the fixed electrode 30. be able to. Thus, when a failure occurs in the customer-side cable 5, the movable mold is removed, and the connection electrode 72 of the connection unit 70 is directly connected to the fixed electrode 30 of the primary-side fixed mold portion 11. Thus, it becomes possible to form a bypass route as a temporary power transmission path and supply power to the consumer side.

  Hereinafter, the usage method of the mold switch 3 of an Example is demonstrated.

  Now, in the power distribution or power transmission path as shown in FIG. 8, when a failure or failure F occurs in any of the customer side secondary cables 105 due to some trouble, the bypass cable 9 is connected to the connection unit 60. The connection unit 60 is attached to the electrode protrusion 53 so that the connection receiving port 63 of the connection electrode 62 is fitted into the electrode protrusion 53. Then, the fastening ring member 64 is firmly fastened to connect the movable electrode 50 and the connection electrode 62. By replacing the movable mold part 15 in this state with the movable mold part 115 of the conventional example, a bypass route as a temporary power transmission path by the bypass cable 9 between the primary side power source and the secondary side consumer in a short power failure time. Can be secured.

  In this way, the cable is restored by replacing the failed secondary cable 5 with a new cable while the bypass route is secured, and the trouble is solved. After replacement with a new cable, the movable mold 15 is replaced with the original movable mold 115 again, the connection unit 60 is removed, and the bypass cable 9 is also removed.

  In this way, when a failure such as a defect occurs in the secondary cable 5, the bypass cable 9 as a temporary cable is connected to the mold switch 3, and the defective cable in which the failure has occurred is replaced with a new cable. The power transmission path can be restored, and normal power supply can be restored.

  That is, in the distribution switch 1, when a failure or failure occurs in the secondary cable 5, is the connection unit 70 attached to the power source side of the fixed mold portion 10 according to the situation at that time? Alternatively, the connection unit 60 may be attached to the electrode protrusion 53 of the movable electrode 50 of the movable mold portion 15 to replace the defective secondary side cable 5 and complete the replacement of the secondary side cable 5. 60 or 70 is removed, and the removed movable mold part 115 is attached to the fixed mold part 10 again.

  In this way, by providing the mold switch connection device such as providing the electrode protrusion 53 to the movable electrode 50 and attaching the connection unit 60, accidents such as a failure of the secondary cable 5 occurring on the consumer side can be simplified. In addition, it is possible to perform processing quickly, and it is possible to shorten the cable replacement time and the power failure time, and to quickly restore the power transmission path.

  Although the present invention has been described with respect to one embodiment, the present invention is not limited to the embodiment, and various changes and modifications can be made. In particular, in the movable mold part 15, if a member similar to the bridging member 152 of the movable mold part 115 of the conventional example is provided between the movable electrodes 50 and 51, it also serves as the function of the movable mold part 115 of the conventional example. It is not necessary to replace the movable mold part at normal times and when a cable failure occurs. Further, the movable electrode 51 on the secondary side is not necessarily required for the movable mold 15 used only at the time of cable replacement.

It is a side view of a mold switch. It is the side view which isolate | separated the fixed mold part and movable mold part of the mold switch, and each crossed the upper half. It is a sectional side view of the movable mold part of a mold switch. It is a side view of a connection unit. It is the rear view seen from the connection receptacle side of the connection unit of FIG. It is the side view which carried out the partial cross section in the case of attaching a connection unit to a movable mold part. It is a side view which shows the modification of a connection unit. It is a schematic diagram of the power transmission circuit in the switch for distribution in which the conventional mold switch was installed in the distribution box. It is a front view of the conventional mold switch. It is a front view of the fixed mold part which removed the movable mold part of the mold switch of FIG. It is a side view which shows a part of fixed mold part which removed the movable mold part of the mold switch of FIG. 9 with sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Switch for power distribution, 2 ... Distribution box, 3 ... Mold switch, 4a-4c ... Mold bus, 5 ... Secondary side cable, 7 ... Terminal fixing pipe, 9 ... Bypass cable, 10 ... Fixed mold part, 11 ... primary side fixed mold part, 12 ... secondary side fixed mold part, 15 ... movable mold part, 16 ... primary side movable mold part, 17 ... secondary side movable mold part, 20 ... housing body, 21 ... base part, 22 , 23 ... Housing part, 24, 25 ... Cylindrical part, 26, 27 ... Cylindrical part, 28, 29 ... Opening part, 30, 31 ... Fixed electrode, 32 ... Contact, 33 ... Main contact part, 34 ... Arc-extinguishing member 35 ... Arc-extinguishing chamber, 40 ... Housing body, 42, 44 ... Housing part, 43 ... Mounting part, 46 ... Fastening member, 50, 51 ... Movable electrode, 53 ... Electrode projecting part, 60, 70 ... Connection unit, 61, 71 ... right angle tubular member 62, 72 ... connecting electrode, 63 ... connecting socket, 64,74 ... clamping rings.

Claims (13)

A connection device used for a mold switch comprising a primary side and a secondary side fixed mold part having a fixed electrode, and a movable mold part having a movable electrode connected to the fixed electrode of the primary side fixed mold part. ,
A connection device for a mold switch, comprising a connection unit having a connection electrode for connecting one end to a movable electrode of the movable mold portion and connecting the other end to a temporary cable. In the connection device for mold switches according to claim 1,
It has an electrode protrusion provided at one end of the movable electrode and a connection socket provided at the tip of the connection electrode, and the connection socket is fitted into the electrode protrusion. A connecting device for a mold switch. In the connection device of the mold switch according to claim 1 or 2,
The connection device for a mold switch, wherein the connection unit is a right-angled tubular member having the connection electrode therein. In the connection device for mold switches according to any one of claims 1 to 3,
The connecting device for a mold switch, wherein the movable electrode is configured not to electrically connect the fixed electrodes of the primary side and secondary side fixed mold portions. A connection device used for a mold switch comprising a primary side and a secondary side fixed mold part having a fixed electrode, and a movable mold part having a movable electrode connected to the fixed electrode of the primary side fixed mold part. ,
A connection device for a mold switch, comprising a connection unit having one end connected to a fixed electrode of the primary side fixed mold portion and the other end connected to a temporary cable. In the connection device for mold switches according to claim 5,
A connection device for a mold switch, wherein the connection electrode is formed of a rod-shaped electrode member. In the connection device for mold switches according to claim 5 or 6,
The connection device for a mold switch, wherein the connection unit is a right-angled tubular member having the connection electrode therein. Power transmission provided with a mold switch comprising primary and secondary fixed mold parts having fixed electrodes, and a removable movable mold part having movable electrodes connected to the fixed electrodes of the primary side fixed mold parts A route recovery method,
When a failure occurs in the cable on the secondary side, a temporary power transmission path is secured by attaching a connection unit for the mold switch connection device to the movable mold part,
Replace the defective cable,
A method for restoring a power transmission path, comprising: removing a connection unit after completion of replacement of a defective cable and releasing the temporary power transmission path. The power transmission path recovery method according to claim 8,
An electrode protrusion is provided on the movable electrode,
The provisional power transmission line route is secured by providing a connection receiving port at a tip end portion of the connection electrode of the connection unit and fitting the electrode into the electrode protruding portion. The power transmission path recovery method according to claim 8 or 9,
The power transmission path restoration method, wherein the connection unit is a right-angle tubular member having the connection electrode therein. A mold switch comprising primary and secondary fixed mold parts having fixed electrodes, and a removable movable mold part having movable electrodes connected to the fixed electrodes of the primary and secondary fixed mold parts. A method for restoring an installed power transmission path,
When a failure occurs in the cable on the secondary side, remove the movable mold part,
Secure the temporary power transmission path by attaching the connection electrode of the connection unit of the connection device for the mold switch to the fixed electrode on the primary side,
Replace the defective cable,
After completing the replacement of the defective cable, remove the connection unit to release the temporary power transmission path,
A method for restoring a power transmission path, wherein the movable mold part previously removed is attached again. The power transmission path recovery method according to claim 11,
A power transmission path restoration method comprising: connecting a power source side cable to a primary side fixed mold part of the mold switch; and connecting a secondary side cable to a secondary side fixed mold part. The power transmission path recovery method according to claim 11 or 12,
The connection unit has a right-angled tubular member, a rod-shaped connection electrode is provided in the right-angled tubular member, a temporary cable is connected to the connection electrode, and a defective cable on the secondary side is replaced. A method for restoring a power transmission path, wherein the connecting unit is removed together with a temporary cable, and the movable mold portion is attached again.

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