JP4206994B2 - Remote control type earth leakage breaker - Google Patents

Description

  The present invention relates to a remote control type earth leakage breaker that can be turned on and off by remote operation.

  In a first conventional example (for example, Patent Document 1), a main movable contact driven by a handle and a relay movable contact driven by an electromagnet device are arranged to face each other. According to this structure, since the main movable contact and the relay movable contact are in direct contact with each other, even if the main movable contact and the relay movable contact are consumed by the first short-circuit current, In order to prevent welding between the movable contact and the relay movable contact, a certain level of contact pressure is required. In this first conventional example, since one relay movable contact is driven by one electromagnet device, it is not necessary to enlarge the electromagnet device, but two electromagnet devices are required when two relay movable contacts are driven simultaneously. In addition, there is a problem that a large electromagnet device must be used, resulting in a large body.

On the other hand, in the second conventional example (for example, Patent Document 2), when adding a leakage interrupt function to a remote control circuit breaker, the agreement type 1P type remote control circuit breaker as described in Patent Document 1 described above is used. The agreement type 2P type remote control type earth leakage circuit breaker is combined with the agreement type 1P type body with zero phase current transformer and earth leakage detector installed side by side. However, there is a problem that only one pole of the remote control type circuit breaker part can be driven to open and close by the electromagnet device, while the other pole cannot be opened and closed by the electromagnet device. For example, although the other pole is generally the ground side, if it is mistakenly connected to the power supply side, electricity will flow if touched by hand even though the relay contact is turned off. Moreover, since it is a contract type 2P type, there exists a problem that a container will enlarge.
JP-A-5-290711 JP 7-240142 A

  The present invention has been made in view of such a reason, and the object of the present invention is to open and close the relay contact device of each pole by one electromagnet device, and in the longitudinal direction of the vessel body. An object of the present invention is to provide a remote control type earth leakage breaker capable of reducing the width per one pole without increasing the size as much as possible.

The remote control type earth leakage breaker of the present invention includes a main body, a plurality of input / output terminals disposed at both ends of the main body, and a main circuit interposed for each pole in an electric circuit between these individual output terminals. A main contact device having a movable contact and a main fixed contact, and a handle disposed on the upper surface of the container body. The main movable contact of each pole is changed to the main fixed contact of each pole by opening and closing the handle. An opening / closing mechanism having a structure for contacting and separating and having a tripping portion for forcibly opening the main movable contact from the main fixed contact, and being interposed in series with the main contact device by the electric circuit of each pole between the input / output terminals A relay contact device having a relay movable contact and a relay fixed contact, an electromagnet device that contacts and separates the relay movable contact with an external signal, and the relay contact that is visible from the upper surface of the container apparatus Relay contact display member that displays the open / close status, zero-phase current transformer that detects the unbalanced current flowing in the electric circuit of each pole, and operates when an unbalanced current is detected at the output of this zero-phase current transformer A leakage detecting device, and an electromagnet that has a tripping coil that is energized by the operation of the leakage detection device and that is driven by the tripping coil to actuate the tripping portion,
The container includes a first side case, an intermediate case, and a second side case that are divided into three in the width direction at least at the position where the relay contact display member and the trip coil are disposed. The relay contact display member is disposed between the intermediate case and the intermediate case, the electromagnet is disposed between the intermediate case and the second case, and the relay contact display member and the electromagnet are connected to the container. Juxtaposed in the width direction of the vessel perpendicular to the direction connecting the ends of the body,
The trip coil is disposed on one side in the rotational direction of the handle, and the leakage detection device is disposed on the other side in the rotational direction of the handle. The container is disposed between the handle and the first side case. A storage groove for storing a connection line between the leakage detection device and the tripping coil is formed on the side surface of the second intermediate case opposite to the handle side. It is.

  In the above configuration, the zero-phase current transformer has unbalanced current generating means having a test button for supplying a pseudo leakage current, and displays the state where the main movable contact is forcibly opened from the main fixed contact by the electromagnet. The earth leakage display member and the test button are juxtaposed in a direction connecting both ends of the container, and at least one of the earth leakage display member and the test button is arranged in the width direction of the container with respect to the relay contact display member Are arranged side by side.

  According to the remote control type earth leakage breaker of the present invention, the main contact device and the relay contact device are separately provided, so that the relay contact device for each pole can be formed by one electromagnet device without using a large electromagnet device. A two-pole type that opens and closes is possible. Further, since the relay contact display member and the tripping coil are not arranged in the longitudinal direction of the container, the width dimension per pole can be reduced without increasing the longitudinal dimension of the container as much as possible. Become. Furthermore, since the relay contact display member and the trip coil can be arranged together on one side in the opening / closing direction of the handle, other members can be arranged on the other side in the opening / closing direction of the handle, so Up.

  When the relay contact display member is disposed between the first case and the intermediate case, and the electromagnet is disposed between the intermediate case and the second case, the relay contact display member and the electromagnet are disposed. Can be arranged in order from the width direction of the container in a horizontal fitting manner, and the arrangement work of the relay contact display member and the electromagnet becomes easy.

  When a storage groove for storing a connection line between the leakage detecting device and the tripping coil is formed on a side surface opposite to the handle shaft support side of the second intermediate case, the handle is pivotally supported on the intermediate case. After that, a tripping coil is provided, and the connection wire between the tripping coil and the leakage detection device can be stored in the storage groove, and the connection wire between the tripping coil and the leakage detection device can be easily stored. There is no fear that the connection line will be disconnected by opening or closing the handle.

  Since the earth leakage display member and the test button are juxtaposed in the longitudinal direction of the container, and at least one of the earth leakage display member and the test button is juxtaposed side by side with the relay contact display member, the width of the container is increased. The earth leakage display member and the test button can be formed in a sufficiently large size without increasing the longitudinal dimension of the vessel body.

  A bipolar remote control type earth leakage breaker according to an embodiment of the present invention will be described with reference to FIGS. The body 1 includes a case 2 serving as a first side case having an open side, a side cover 3 serving as a second case closing the opening, an output-side partition member 5 serving as an intermediate case, and a second intermediate It is composed of an input side partition member 4 serving as a case, and has a width equal to or less than the agreement type 1 pole. The input side partition member 4 and the output side partition member 5 are interposed between the case 2 and the side cover 3 at both ends of the container body 1 and connect the width direction of the container body 1, that is, both side surfaces of the container body 1. Partition the middle of the direction.

  For each pole, the electric circuit in the body 1 is a plug-in terminal 6 that is an input side terminal, a flexible electric wire conductor 11, an abnormal current detecting device 7, a flexible electric wire conductor 12, a main contact device 8, a relay contact device 9, It is composed of a flexible wire conductor 13 and a quick connection terminal 10 which is an output side terminal. Each electric circuit extends in a direction connecting both ends of the container 1, and is disposed in a space partitioned by the partition members 4 and 5 so as to be arranged in parallel in the width direction of the container 1. The zero-phase current transformer 100 is connected so that the main contact device 8 is connected to the plug-in terminal 6 side of the relay contact device 9 and the electric path between the main contact device 8 and the plug-in terminal 6 is the primary side. Is provided. Furthermore, both ends of the leakage detecting device 102 and both ends of the unbalanced current generating circuit 115 are connected between the electric paths between the main contact device 8 and the relay contact device 9.

  The plug-in terminal 6 is disposed at one end of the container body 1 in both end directions, and contacts a bar (not shown) connected to a main breaker (not shown). In order to fit, the groove 80 is formed in the end part of the container 1 and the input side partition member 4, and the plug-in terminal 6 is disposed in the groove 80. The quick connection terminal 10 uses a lock spring 82 that quickly connects an electric wire conductor (not shown), and is disposed inside an electric wire conductor insertion hole 83 formed in the end surface of the case 2. It can be unlocked. The unlocking member 84 has a hole 84b in the middle portion, the shaft 98 passes through the hole 84b, and both ends of the shaft 98 are supported by the case 2 and the side cover 3 through the output-side partition member 5, and thereby unlocked. A member 84 is pivotally supported. A part of the lower end portion of the unlocking member 84 rests on the locking spring 82, and an engagement piece 86 is provided to engage with the tip of the wire conductor that has passed through the locking spring 82 from the wire conductor insertion hole 83. The upper end portion of the unlocking member 84 is exposed from a part of the exhaust hole 64a formed from the upper surface to the end surface of the case 2, and the display portion 84a is provided in the exposed portion of the upper end portion. The display portion 84a is positioned at the central edge of the upper surface of the body 1 of the exhaust hole 64a when not pressed by the wire conductor, and pushes the engagement piece 86 at the tip of the wire conductor to rotate counterclockwise. By moving, the display portion 84a of the unlocking member 84 slightly moves in the exhaust hole 64a of the case 2 to expose the display surface (shaded portion) of the display portion 84a. As a result, it is displayed that the wire conductor is securely inserted.

  The remote control terminal 90 of the electromagnet device 31 is provided below the quick connection terminal 10 on one end surface of the container 1, and an end portion is mounted on a printed circuit board 49 described later.

  The opening / closing mechanism 30 and the electromagnet device 31 are shared by the poles, and are disposed between the central portion in the direction connecting both ends of the container body 1, that is, between the partition members 4 and 5. The opening / closing mechanism 30 and the main contact device 8 are disposed above an insulating partition wall 32 provided in the case 2, and the electromagnet device 31 is disposed in an electromagnet device housing chamber 136 formed below the insulating partition wall 32. In FIG. 18, reference numeral 135 denotes a magnetic shielding plate provided in the insulating partition wall 32 and interposed between the electromagnet device 31, the switching mechanism 30, and the main contact device 8.

  The opening / closing mechanism 30 mainly includes a handle 14, a reverse link 15, a lever 16, a movable frame 17, an opening spring 19, and a tripping member 20. The handle 14 has a shaft 14 a rotatably supported between the case 2 and the side cover 3 of the container 1, and a part of the handle 14 protrudes from an opening 18 formed on the upper surface of the case 2. One end of the reverse link 15 is connected to the handle 14, and the other end is connected to an intermediate portion that is a fulcrum of the lever 16. One end of the lever 16 is locked to the tripping member 20, and the other end is locked to the movable frame 17. The movable frame 17 has a shaft 17 a that is pivotally supported between the case 2 and the side cover 3. The opening spring 19 is compressed and interposed between the movable frame 17 and a spring receiver 21 provided in the case 2, and urges the movable frame 17 clockwise in FIG. The tripping member 20 is urged by a return spring 23 in a direction (clockwise in FIG. 4) in which the shaft 20a is pivotally supported between the case 2 and the side cover 3 and the locking portion 22 is locked to one end of the lever 16. Yes. The main movable contact 8 a of the main contact device 8 has a base end inserted through the recess 17 b of the movable frame 17 and is held in the recess 17 b by a contact pressure applying spring 34. And the flexible wire conductor 12 and the base end part of the main movable contact 8a of the main contact device 8 are connected. Here, the tripping portion that causes the trip operation is configured by the lever 16, the movable frame 17, the tripping member 20, the opening spring 19 and the like.

  2 and 4, the open / close mechanism 30 is in the on state, and the movable frame 17 is rotated by the handle 14 in a state where one end of the lever 16 is locked to the locking portion 22 as shown in FIG. Thus, the opening spring 19 is compressed, and the handle 14 is locked to the edge of the opening 18 by the biasing force. The off state is a state in which the handle 14 in the on state in FIG. 2 is operated to the opposite side as shown in FIG. 10, and the reversing link 15 is reversed as the handle 14 rotates and is movable by the biasing force of the opening spring 19. The frame 17 rotates clockwise and the movable contact 8a is turned off, and the lever 16 is pushed up. The on operation from the off state is the opposite operation. In the trip state, the tripping member 20 rotates clockwise against the return spring 23 by the operation of the electromagnet 103 of the abnormal current detection device 7 or the leakage detection device 102 described later in the on state of FIG. The lever 16 is pulled out so that 22 is detached from the lever 16. Therefore, the movable frame 17 is rotated clockwise by the biasing force of the opening spring 19 to push up the lever 16, and the movable contact 8a is turned off, and the handle 14 biases the handle 14 in the off direction. Rotates to a neutral position between the on position. In addition, when the handle 14 is operated in the off direction from the neutral posture state, it can be turned off.

  The electromagnet device 31 uses a latch-type polarized electromagnet, and is arranged horizontally in the body 1 so that the operation direction of the plunger 36 serving as a movable iron core is a direction connecting both ends of the body 1. The width direction connecting both sides of 1 occupies the entire space between the inner side surface of the case 2 and the inner side of the side cover 3. The configuration of the electromagnet device 31 is shown in FIG. A plunger 36 is inserted through the center of the coil frame 37, and a coil 38 is wound around the outer periphery of the coil frame 37. A pair of inner yokes 39 to be fixed iron cores are arranged on both upper and lower sides of the coil 38, and a pair of substantially U-shaped outer yokes 40 to be fixed iron cores are arranged on the outer sides of the coils 38. A permanent magnet 41 for making the both yokes different in polarity is interposed therebetween, and an armature plate 42 is provided between both end portions of the outer yoke 40 and the inner yoke 39 at both end portions of the plunger 36. A relay movable frame 44 of the relay contact device 9 is connected to one end of the plunger 36 by a shaft 36a. A shaft 44 a of the relay movable frame 44 is pivotally supported between the case 2 and the side cover 3. The relay movable frame 44 has recesses 44b on both sides, and the relay movable contact 9a is inserted into the recess 44b, and the relay movable contact 9a is held by a contact pressure applying spring 45. The relay movable contact 9 a and the quick connection terminal 10 are connected by a flexible wire conductor 13. A printed circuit board 49 having a switch 47 opposed to the plunger 36 via a relay movable frame 44 is disposed at one end of the plunger 36, and a printed circuit board 50 having a switch 48 is disposed opposed to the other end. The relay movable frame 44 is rotated at one end of the plunger 36, the switch 47 is pressed by the switch pressing portion 44 c of the relay movable frame 44, and the switch 48 is directly pressed by the other end of the plunger 36. Both switches 47 and 48 are configured so that the current is stopped by pressing the switches 47 and 48 at the end of the plunger 36. A pair of diodes and a surge absorbing element, which will be described later, are mounted on the printed circuit boards 49 and 50 to rectify alternating current and energize the coil 38, and between the printed circuit boards 49 and 50 and the coil 38, a lead wiring board 52a and a lead wire 52 are mounted. It is wired by.

  FIG. 20 shows an ON state of the plunger 36 with the relay movable contact 9a turned ON. The permanent magnet 41 latches one end portion of the plunger 36 in a state of protruding outward. The OFF state of the relay movable contact 9a is a state in which the plunger 36 has moved to the opposite side. When the coil 38 is energized in one direction, the plunger 36 is moved to the opposite side and latched by the permanent magnet 41. Yes. When the coil 38 is energized in the direction opposite to the above, it turns from the off state to the on state.

  FIG. 21 is an operation circuit diagram of the electromagnet device 31 having the coil 38. The pair of antiparallel diodes D1 and D2 are for rectification, and switches 47 and 48 are connected to one end thereof as shown in the figure, and the remote switch SW is connected to the other end. Z is a surge absorbing element. The figure shows the ON operation of the plunger 36 from the OFF state. That is, when the remote switch SW is operated so that the diode D1 side is turned on and the diode D2 side is turned off, the normally closed contact NC of the switch 47 is closed, so that half-wave rectification flows through the coil 38 as indicated by an arrow. As a result, the plunger 36 is driven to leave the state where the switch 48 is pressed, then the switches 47 and 48 are both released, and then the switch 47 is pressed. When the switch 48 is released from the pressed state, the contact is switched from the normally open contact NO to the normally closed contact NC. When the switch 47 is pressed, the normally closed contact NC is opened and the normally open contact NO is closed, whereby the energization of the coil 38 is stopped. When the plunger 36 is turned off from the ON state, when the remote switch SW is operated in the opposite direction so that the diode D2 side is ON and the diode D1 side is OFF, the switch 47 is normally closed contact NO and the switch 48 is normally closed contact. Since the NC is closed, half-wave rectification flows through the coil 38 in the opposite direction as indicated by the arrow. At this time, a current of 1/2 flows through each of the switches 47 and 48. As a result, the plunger 36 is driven to the off side, contrary to the above-described operation, so that the switch 47 is released from the pressed state, then both the switches 47 and 48 are released, and then the switch 48 is pressed. . When the switch 47 is released from the pressed state, the contact is switched from the normally open contact NO to the normally closed contact NC. When the switch 48 is pressed, the normally closed contact NC is opened and the normally open contact NO is closed, whereby the energization of the coil 38 is stopped.

  Here, a display lever 54 extends toward the upper end of the case 2 in the relay movable frame 44. A display opening 55 is formed at the upper end of the case 2 adjacent to the opening 18 for the handle, and a shaft portion 56a of a relay contact display member 56 for displaying the relay status is formed inside the case 2 and the output side partition. It is pivotally supported between the members 5. The relay contact display member 56 is formed with an engagement portion 56b, and the upper end portion of the display lever 54 is engaged with the engagement portion 56b. As the relay movable frame 44 is turned on or off by the operation of the plunger 36, the relay contact display member 56 is turned, and an ON or OFF display shown on the relay contact display member 56 appears in the opening 55.

  The main contact device 8 has a main movable contact 8a having a main movable contact 60 fixed to the distal end side, a main fixed contact 61 fixed to the distal end side, and a base end facing the base end side of the main movable contact 8a. And a main fixed contact 8b extended in a shape. The relay contact device 9 includes a relay fixed contact 9b in which a relay fixed contact 62 is fixed on the front end side, a relay movable contact 63 fixed on the front end side, and a base end side as a base end side of the relay fixed contact 9b. For example, it has the relay movable contact 9a extended in the opposite direction.

  The case 2 and the partition of the main body 1 are arranged so that the set of the main movable contact 60 and the main fixed contact 61 and the set of the relay movable contact 63 and the relay fixed contact 62 are divided and arranged in the direction connecting both side portions of the main body 1. Each member 5 is housed in an arc extinguishing chamber 64 for each pole formed in the member 5. An exhaust hole 64a of the arc extinguishing chamber 64 of each pole is formed in a corner portion between the upper surface of the container 1 and the end surface on the output side.

  The main contact device 8 and the relay contact device 9 of each pole are electrically connected by an arc driver 66 which is a conductor formed of a plate (see FIG. 16). The arc driver 66 passes from the base end side of the main fixed contact 8b to the side opposite to the main fixed contact 8b through the side of the main movable contact 8a so as to cross the base end of the main movable contact 8a. The connecting piece 67 extends, and the arc driving piece 68 extends from the connecting piece 67 to the main movable contact 8a so as to face the front end of the main movable contact 8a. Further, the proximal end portion of the relay fixed contact 9 b is connected to the distal end portion of the arc driving piece 68. As a result, the main fixed contact 61 and the relay fixed contact 62 are connected via the arc driver 66. The main fixed contact 8b, the connecting piece 67, the arc drive piece 68 and the relay fixed contact 9b are press-molded and bent by a single conductive plate, and the main fixed contact 61 and the relay fixed contact 62 are fixed to the conductor. is doing. In this case, the surface of the relay fixed contact 62 of the relay fixed contact 9b is fixed so as to be opposite to the fixed contact 61 side of the main contact device 8, and the main end of the relay fixed contact 9b on the base end side is fixed. An iron member 70 is attached to the contact device 8 side. Further, the relay fixed contact 9b around the main fixed contact 61, the iron member 70, the arc driving piece 68, the connecting piece 67 and the surface of the main fixed contact 8b facing the main fixed contact 61 are covered with respect to the main fixed contact 61. An insulator 95 that is formed as described above and forms the inner wall of the arc extinguishing chamber 64 is disposed in the arc driver 66. Further, the relay movable contact 9a is formed with an extension piece 69 extending from the position where the relay movable contact 63 is fixed to the front end side, and the iron member 70 has both side pieces bent from both sides to the extension piece 69 side. 70a is formed, and, for example, an iron magnetic body 71 facing both side pieces 70a is attached to the extending piece 69.

  Here, the operation states of the main contact device 8 and the relay contact device 9 will be described. 2, 10, and 12 are states in which the relay movable contact 63 is turned on, off, or tripped by operating the handle 14 while the relay movable contact 63 is on. 5 and 8 show the relay contact device 9 in the off state and the main contact device 8 in the on or off state.

  In each pole of the vessel 1, the abnormal current detecting device 7 includes a short-circuit detecting means 75 having a movable-side magnetic body 75 a that performs an electromagnetic attraction operation with respect to the fixed-side magnetic body 75 b by a magnetic flux generated around the short-circuit current; The overcurrent detection means 76 using In one pole, an intermediate portion of the operation lever 77 is pivotally supported by a shaft 78 provided on the input side partition member 4, and the operation lever 77 is operated clockwise by being pushed by the movable side magnetic body 75a or the bimetal 7b. An operating lever 77 is connected to the tripping member 20 via a link 79. When the operating lever 77 is operated by short circuit detection or overcurrent detection, the tripping member 20 is rotated clockwise against the return spring 23. The lever 16 is pulled and operated. In the other pole, the tripping member 20 is provided with two operation lever portions 77a pressed by the movable side magnetic body 75a and the bimetal 7b of the abnormal current detection device 7.

  The zero-phase current transformer 100 is attached to the mounting substrate 101 on which the leakage detection circuit 105 is mounted, and is disposed in a space between the plug-in terminal 6 in the partition member 4 of the container 1 and the abnormal current detection device 7. Yes. And the flexible wire 11 which comprises the electric circuit which connects the plug-in terminal 6 and the abnormal current detection apparatus 7 is made into the primary side, and the zero-phase current transformer 100 and the through-hole 101a of the board | substrate 101 are penetrated. The leakage detection device 102 includes a leakage detection circuit 105 and a switching element 104 mounted on the mounting substrate 101, and an electromagnet 103 having a tripping coil 106 (see FIG. 17). The leakage detection device 102 is disposed on the opposite side of the longitudinal direction of the electromagnet 103 with respect to the handle 14 of the container 1. The leakage detection circuit 105 receives the secondary side of the zero-phase current transformer 100 as an input, and drives the switching element 104 when a predetermined output reaches a predetermined time. The electromagnet 103 is accommodated in the output-side partition member 5 between the output-side partition member 5 and the side cover 3 so as to be juxtaposed in the width direction of the relay contact display member 56 and the body 1. A tripping coil 106 constituting a coil is connected to an electric circuit between the main contact device 8 and the relay contact device 9, that is, an arc driver 66 of each pole, via a switching element 104. The bridge member 108 that reaches the output side partition member 5 extends from the input side partition member 4, and the handle 14 is disposed between the bridge member 108 and the case 2. A slide member 110 is slidably supported in a guide groove 109 formed on the opposite side surface. One end of the slide member 110 is opposed to the tip of the plunger of the electromagnet 103 and a spring 111 is interposed between the other end and the bridging member 108. And press one end against the plunger. The drive unit 112 extending from the other end of the slide member 110 faces the receiving protrusion 113 of the tripping member 20. The bridging member 108 has a hole 108a through which the shaft 14a of the handle 14 is passed, and a storage groove 108b is formed in parallel with the guide groove 109, and a connecting line 122 between the electromagnet 103 side and the leakage detection device 102 of the printed circuit board 101 is connected. Pass through. The trip coil 106 is energized by the operation of the switching element 104, the slide member 110 is slid against the spring 111 by the plunger of the electromagnet 103, the trip member 20 is driven by the drive unit 112, the lever 16 is tripped, and the opening / closing mechanism 30. Trip operation.

  The unbalanced current generation circuit 115 has a test switch 116, a resistor 117, and a linkage portion 115a of the zero-phase current transformer 100, and both ends thereof are connected to the arc driver 66 of each pole as shown in FIGS. ing. The test switch 116 is disposed above the electromagnet 103 of the output-side partition member 5, and a test button 118 for operating the test switch 116 is mounted in a hole 125 formed over the output-side partition member 5 and the upper surface of the side cover 3. is doing. In addition, the earth leakage display member 120 is disposed in a hole 126 formed over the upper surface of the output side partition member 5 and the side cover 3 along the test button 118 and the extending direction of the electric circuit, that is, in the longitudinal direction of the container 1. At least one of the earth leakage display member 120 and the test button 118 is aligned with the relay contact display member 56 in the width direction of the container 1. When the test button 118 is pressed, the test switch 116 is turned on, and an output appears on the secondary side of the zero-phase current transformer 100 due to the generation of a pseudo unbalanced current, which is detected by the leakage detection circuit 105 of the leakage detection device 102, The switching element 104 is turned on, whereby the trip coil 106 is energized, the electromagnet 103 is operated, and the opening / closing mechanism 30 is tripped.

  The earth leakage display member 120 is configured to protrude from the upper surface of the container 1 by a spring (not shown) in conjunction with the operation of the electromagnet, for example, and after the earth leakage trip operation, the handle 14 is turned off to cause the earth leakage. The display member 120 is configured to be retracted. Reference numeral 122 a denotes a lead wiring of the leakage detection device 102.

It is a disassembled perspective view of the remote control type earth leakage breaker of one embodiment of the present invention. It is a front view of the ON state which looked at the inside. It is a top view of an ON state. It is a rear view of the ON state which looked at the inside. It is a front view of a relay contact device in an OFF state. FIG. It is a rear view of a relay contact device in an OFF state. It is a front view of a main contact device and a relay contact device in an OFF state. FIG. It is a front view of a main contact device in an OFF state. FIG. It is a front view of a trip state. FIG. It is a front view which mainly shows a leak detection apparatus, a test switch, and a zero phase current transformer. It is a perspective view which shows an abnormal current detection apparatus, an electromagnet, and a test switch. It is a disassembled perspective view of an arc drive conductor. It is a wiring diagram around a zero phase current transformer. It is a fragmentary sectional view showing an electromagnet device. It is an external perspective view. It is sectional drawing of the electromagnet apparatus of an ON state. It is an operation circuit diagram of an electromagnet device.

Explanation of symbols

1 Body 6 Plug-in terminal 8 Main contact device 9 Relay contact device 9a Relay movable contact 9b Relay fixed contact
10 Fast connection terminal
14 Handle 30 Opening / closing mechanism 31 Electromagnet device 56 Relay contact display member 60 Main movable contact
61 Main fixed contact
62 Relay fixed contact 63 Relay movable contact 66 Arc driver 100 Zero phase current transformer 102 Electric leakage detection device 104 Switching element 106 Trip coil 108a Housing groove 116 Test switch 118 Test button

Claims (2)

A main contact having a main body, a plurality of input / output terminals arranged at both ends of the main body, and a main movable contact and a main fixed contact that are interposed for each pole in an electric path between these human output terminals. The main movable contact of each pole and the main fixed contact of each pole by the opening and closing operation of the handle, and the main movable contact An open / close mechanism having a tripping portion for forcibly opening the main fixed contact, and a relay movable contact and a relay fixed contact interposed in series with the main contact device in the electric path of each pole between the input and output terminals. A relay contact device; an electromagnet device that contacts and separates the relay movable contact with the relay fixed contact by an external signal; and a relay contact display member that is visible from the upper surface of the body and displays an open / closed state of the relay contact device And each A zero-phase current transformer that detects an unbalanced current flowing in the electric circuit, a leakage detection device that operates when an unbalanced current is detected at the output of the zero-phase current transformer, and an operation of the leakage detection device. An electromagnet having a tripping coil that is energized and driven by the tripping coil to actuate the tripping portion;
The container includes a first side case, an intermediate case, and a second side case that are divided into three in the width direction at least at the position where the relay contact display member and the trip coil are disposed. The relay contact display member is disposed between the intermediate case and the intermediate case, the electromagnet is disposed between the intermediate case and the second case, and the relay contact display member and the electromagnet are connected to the container. Juxtaposed in the width direction of the vessel perpendicular to the direction connecting the ends of the body,
The trip coil is disposed on one side in the rotational direction of the handle, and the leakage detection device is disposed on the other side in the rotational direction of the handle. The container is disposed between the handle and the first side case. A remote housing having a second intermediate case disposed on the side surface opposite to the handle side of the second intermediate case and having a storage groove for storing a connection line between the leakage detecting device and the trip coil Control type earth leakage breaker. An earth leakage display member having unbalanced current generating means having a test button for passing a pseudo leakage current to the zero-phase current transformer, and displaying a state in which the main movable contact is forcibly opened from the main fixed contact by the electromagnet And the test button are juxtaposed in a direction connecting both ends of the device body, and at least one of the earth leakage display member and the test button is juxtaposed in the width direction of the device body with respect to the relay contact display member. The remote control type earth leakage breaker according to claim 1 .

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