JP3531191B2 - Remote control type circuit breaker and its operating device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control type circuit breaker and its operating device.

[0002]

2. Description of the Related Art Conventionally, a bistable type electromagnet device having a mechanism part of a circuit breaker and a plunger capable of advancing and retracting is built in the body, and a mechanism part of the circuit breaker is provided by giving an external signal to the electromagnet device. There is provided a remote control type circuit breaker capable of operating the above (see Japanese Patent Publication No. 2-44100). This type of remote-controlled circuit breaker, like a general circuit breaker, has a latch link that releasably engages the trip link, and the latch link engages the trip link to close the main contact. In this state, if an abnormal current such as a short circuit current, an overcurrent, or a leakage current is detected to flow into the main contact, the pre-stored power is released to rapidly operate (trip operation) to open the main contact. An opening / closing mechanism is provided, and a handle partially protruding from the body is provided in the opening / closing mechanism. The electromagnet device has a structure for advancing and retracting the plunger by reversing the direction of energization to the coil, and the plunger is connected to the handle. In the normal state where the latch link is engaged with the trip link, the main contact can be opened and closed by operating the handle or an external signal to the electromagnet device. In the abnormal state, the main contact can be closed only when the returning operation is performed by the handle, and it is prohibited to return the main contact to the closed state by the electromagnet device. That is, the re-closing prevention switch that is opened / closed according to the engagement / disengagement of the latch link with the trip link is inserted into the path for giving an external signal to the electromagnet device, and when the latch link comes off the trip link, the re-closing prevention switch is It is turned off so that an external signal cannot be given to the electromagnet device. Here, when the opening / closing mechanism section trips, the handle is kept in the vicinity of the position when the main contact is on.

[0003]

SUMMARY OF THE INVENTION In the remote control type circuit breaker having the above-mentioned structure, since the return operation of the main contact by the electromagnet device is prohibited after the opening / closing mechanism section trips,
It is recommended that the opening / closing mechanism is reset (that is, the latch link is engaged with the trip link) before the cause of the abnormality that activated the opening / closing mechanism is removed, and the main contact is reclosed by remote control. It can prevent and increase safety. However, even if the abnormality is monitored separately and the presence or absence of the abnormality can be monitored at a place away from the circuit breaker, if the main contact opens due to an abnormality, the circuit breaker will be installed. Therefore, there is a problem that the returning work is troublesome because the returning operation has to be performed.

The present invention is intended to solve the above problems, and it is prohibited to re-close the main contact by opening and closing the main contact when the main contact is restored from the opening due to an abnormality. However, a remote control type circuit breaker that facilitates the restoration work by resetting the opening / closing mechanism by remote operation from the outside is provided, and the restoration operation is different from the opening / closing of the main contact. It is an object of the present invention to provide a remote control type circuit breaker operating device that reduces the chance of re-closing the main contact in a state where the abnormality has not been cleared by operating.

[0005]

According to a first aspect of the present invention, there is provided an opening / closing mechanism section for driving the main contact to open and close, and forcibly opening the main contact by shifting from a normal state to an abnormal state when an abnormality is detected, and a coil. An electromagnet device that opens and closes the opening / closing mechanism according to the energization direction, and is connected in series to the coil of the electromagnet device and turns on when the opening / closing mechanism is in a normal state and turns off when it is in an abnormal state. Switch,
Both ends of the series circuit of the coil and the re-closing prevention switch,
At least three terminals are respectively connected to the connection point between the coil and the re-closing prevention switch.

According to a second aspect of the present invention, the main contact is opened / closed, and at the time of detection of an abnormality, an opening / closing mechanism portion that shifts from a normal state to an abnormal state to forcibly open the main contact, and a direction of energizing the coil. The electromagnet device that opens and closes the open / close mechanism by a common contact is connected to one end of the coil of the electromagnet device, and the normally open contact is selected when the open / close mechanism is in the normal state and the normally open contact is selected when the open / close mechanism is in the abnormal state A switch for re-closing,
It is characterized by comprising at least three terminals respectively connected to the normally closed contact and the normally open contact of the re-closing prevention switch and the other end of the coil.

According to a third aspect of the present invention, the main contact is opened and closed, and at the time of detection of an abnormality, an opening and closing mechanism portion that shifts from a normal state to an abnormal state and forcibly opens the main contact, and a direction of energization to the coil. And a common contact is connected to one end of the coil, the first contact and the second contact are selected in conjunction with the opening and closing of the main contact in the normal state, and the second contact in the abnormal state. A switching contact for selecting the contact of the
A first diode which has one end connected to the one end of the coil through the contact point and allows the passage of a current in the direction of closing the main contact; and one end connected to the one end of the coil through the second contact point. A second diode that allows the passage of a current in the direction of opening the contact and at least a second diode that is connected in series and turns on when the switching mechanism is in a normal state and turns off when it is in an abnormal state. Switch, and at least four terminals respectively connected to both ends of the series circuit including the second diode and the reclosing prevention switch, the other end of the coil, and the other end of the first diode. And

According to a fourth aspect of the present invention, the main contact is opened and closed, and at the time of detection of an abnormality, an opening and closing mechanism portion that shifts from a normal state to an abnormal state and forcibly opens the main contact, and a direction of energizing the coil. And a common contact is connected to one end of the coil, the first contact and the second contact are selected in conjunction with the opening and closing of the main contact in the normal state, and the second contact in the abnormal state. A switching contact for selecting the contact of the
A first diode which has one end connected to the one end of the coil through the contact point and allows the passage of a current in the direction of closing the main contact; and one end connected to the one end of the coil through the second contact point. A second diode that allows the passage of a current in the direction of opening the contact, and at least one end of the series circuit opposite to the second contact in series connection with the second diode is the other end of the first diode. A re-closing prevention switch that is turned on when the connected opening / closing mechanism is in a normal state and is turned off when it is in an abnormal state, one end on the coil side of the re-closing prevention switch, the other end of the coil, and the first diode. And at least three terminals respectively connected to the other end.

The invention of claim 5 is the invention of claim 1, claim 3,
The operation apparatus which is connected via an on-off control line supplying a current to the coil for opening and closing a main contact to the remote controlled circuit breaker according to any one of 請 Motomeko 4, the coil through switching control line in the operating device having a conduction direction selection means for selecting the direction of current to be supplied, is connected between the coil and reenter prevention switch in a remote-controlled circuit breaker to avoid switching on again prevented during operation And a return means for energizing the coil.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the resetting means is a short circuit switch connected in parallel with the reclosing switch, and the short circuit switch supplies a current in a direction for opening the main contact. It is characterized by passing it. According to a seventh aspect of the present invention, in the sixth aspect of the invention, an on-switch and an off-switch as energization direction selecting means and a reset switch connected in parallel to the off-switch are provided,
The reset switch is characterized in that it is turned on in conjunction with turning on of the short-circuit switch.

According to an eighth aspect of the invention, in the fifth or sixth aspect of the invention, the remote control type circuit breaker is provided through an information signal line through which a signal corresponding to the open / closed state of the main contact of the remote control type circuit breaker is passed. It is characterized in that it is provided with a display device which is connected to the device and informs of an abnormal state. The invention of claim 9 is characterized in that, in the invention of claim 8, the indicator is connected in parallel with the reclosing prevention switch together with the short-circuit switch.

According to a tenth aspect of the invention, in the invention of the eighth aspect, the re-closing prevention switch has two selection contacts selectively connected to a common contact, and one selection contact is provided. It is characterized in that it is connected to one end of the coil, and a short-circuit switch and an indicator are respectively connected between each selection contact and the common contact. The invention of claim 11 relates to claim 6
In the invention, the display device for resettable display for indicating that the short-circuit switch is turned on is provided.

[0013]

In the remote control type circuit breaker according to any one of claims 1 to 4, there is provided a re-closing preventing switch which is connected in series with the coil and is turned on when the opening / closing mechanism is in a normal state and turned off when the opening / closing mechanism is in an abnormal state. In addition to the provision of terminals, terminals are provided at both ends of the circuit that passes through the coil and the re-closing prevention switch, and terminals are provided between the coil and the re-closing prevention switch. By energizing between the terminal and the one end of the coil, it is possible to energize the coil while avoiding the re-closing prevention switch. In other words, the switch is equipped with a re-closing prevention switch that is turned off when the opening / closing mechanism is in an abnormal state, while resetting the opening / closing mechanism by opening / closing the main contact is prohibited, but it is possible to energize the coil by another operation. The part can be reset.

According to the operating device of claims 5 to 7,
In addition to the energizing direction switching means for switching the energizing direction to the coil, there is provided a returning means for avoiding the re-closing prevention switch and energizing the coil,
The resetting means provided separately from the energization direction switching means resets the opening / closing mechanism section, which avoids the risk of inadvertent resetting in the state where the abnormality has not been cleared, while resetting by remote operation. It will be possible.

According to the eighth to eleventh aspects of the present invention, since the indicator for notifying the abnormal state of the opening / closing mechanism is provided, it is confirmed that the opening / closing mechanism of the remote control type circuit breaker is in the trip state. It can be known from the operating device, and the operation corresponding to the operating state of the remote control type circuit breaker becomes possible.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Although the detailed description of the mechanical portion is omitted in each of the following embodiments, the mechanical portion of the well-known remote control type circuit breaker disclosed in Japanese Patent Publication No. 2-44100 is disclosed in the present invention. However, it can be used. The gist of the present invention resides in a specific configuration for enabling a return operation in such a remote control type circuit breaker and a configuration of an operating device for operating the remote control type circuit breaker.

(Embodiment 1) In a remote control type circuit breaker (hereinafter abbreviated as circuit breaker) A1a shown in this embodiment,
As shown in FIG. 1, a coil 11 of the electromagnet device and a re-closing prevention switch r ₁ that is turned off when the opening / closing mechanism section trips are connected in series, and terminals 31a and 31c are provided at both ends of the series circuit. provided by the terminal 31b is provided at the connection point between the coil 11 and the reintroduction prevention switch r _1, a total of three terminals 31a~31c are provided. Further, each of the ends terminal T ₁ of the main contact r _0,
T ₂ is provided.

The operating device B1a has an on-switch 21 and an off-switch 22 which are turned on only during operation, diodes 23 and 24 which are respectively connected in series to the on-switch 21 and off-switch 22, and are turned on only during operation. And a short circuit switch 25. A series circuit of the ON switch 21 and the diode 23 and a series circuit of the OFF switch 22 and the diode 24 are connected in parallel so that the polarities of the diodes 23 and 24 are opposite to each other, and constitute the conduction direction selection circuit 20. . Further, the short-circuit switch 25 is connected to the energization direction selection circuit 20 in series.
Terminals 41b and 41c are provided at both ends of a series circuit of the energization direction selection circuit 20 and the short-circuit switch 25, and a terminal 41 is provided at a connection point between the energization direction selection circuit 20 and the short-circuit switch 25.
a is provided.

The circuit breaker A1a and the operating device B1a are
The terminal 31a and the terminal 41a are connected via the open / close control line L ₁ , the terminal 31b and the terminal 41b are connected via the return control line L ₂ , and the AC power supply AC is connected between the terminal 31c and the terminal 41c. It is used by connecting. In this connection, the short circuit switch 25 is connected in parallel to the re-closing prevention switch r ₁ , and when the short circuit switch 25 is turned on, the re-closing prevention switch r ₁ is short-circuited.

By connecting the circuit breaker A1a and the operating device B1a as described above, the following operations become possible. First, a state where the opening and closing mechanism in the circuit breaker A1a is not tripped (hereinafter, referred to as a normal state), the since reintroduced prevention switch r ₁ is ON, the coil 11 when the on-switch 21 is turned on 1, a current flows from the top to the bottom of FIG. 1, and when the off switch 22 is turned on, a current flows from the bottom to the top of the coil 11. Therefore, by turning on the on switch 21 and the off switch 22, respectively, the energization direction to the coil 11 can be switched, and the main contact r ₀ can be opened and closed. It goes without saying that the main contact r ₀ is closed when the on switch 21 is turned on.

On the other hand, if the switching mechanism section trips and the main contact r ₀ opens due to the detection of an abnormality such as an overcurrent, a short-circuit current, or a leakage current (this state is hereinafter referred to as an abnormal state), re-closing is prevented. The switch r _{1 is} also opened. Therefore, even if the on switch 21 and the off switch 22 are turned on, the coil 11 cannot be energized. That is, the opening / closing mechanism is not reset by the opening / closing operation using only the ON switch 21 and the OFF switch 22, so that the main contact r
₀ does not return to the closed state, and it is possible to prevent the main contact r _{0 from} being accidentally reclosed in a state where the cause of the abnormality is not removed.

To reset the opening / closing mechanism section (that is, engage the latch link with the trip link) by the operating device B1a after the trip operation, the short-circuit switch 25 is used.
Is turned on and the off switch 22 is turned on at the same time.
This operation will be described. First, after the opening / closing mechanism has tripped, the handle of the circuit breaker A1a is kept in the vicinity of the position on the closing side, and therefore it is necessary to operate the handle to tilt it to the opening side for the reset operation. become. On the other hand, since the electromagnet device is connected to the handle, if the coil 11 is energized so that the handle can be tilted to the opening side by the electromagnet device, the opening / closing mechanism can be reset. Therefore, the short-circuit switch 2
5 is turned on to short-circuit the re-closing prevention switch r ₁ so that the coil 11 can be energized, and at the same time, the off switch 22 is turned on to energize the coil 11 in the opening direction. The opening / closing mechanism is reset.

As described above, in order to reset the opening / closing mechanism portion, a return operation for simultaneously operating the short-circuit switch 25 and the off switch 22 is necessary. Since the return operation is different from the opening / closing operation, the on switch 21 is operated. And off switch 22
Therefore, conscious operation is required as compared with the case where the opening / closing mechanism is reset by the single operation. As a result, it is possible to reduce the possibility of closing the main contact r _{0 in a} state where the abnormality that has caused the trip operation of the opening / closing mechanism has not been eliminated. Further, even if the on-switch 21 is operated simultaneously with the short-circuit switch 25 to energize the coil 11, the opening / closing mechanism section is not reset, and the main contact r ₀ is always opened when the opening / closing mechanism section is reset. The safety is higher than when r ₀ is closed.

(Embodiment 2) Circuit breaker A3a of the present embodiment
Then, as shown in FIG. 2, the re-closing prevention switch r ₁ is constituted by a changeover switch. That is, in the re-closing prevention switch r ₁ , the common contact is connected to one end of the coil 11, the normally closed contact is connected to the terminal 31a, and the terminal 31b.
Since the normally open contact is connected to, the one of the two terminals 31a and 31b to which one end of the coil 11 is connected is selected. Therefore, one end of the coil 11 is connected to the terminal 31a when the opening / closing mechanism is not tripping, and one end of the coil 11 is connected to the terminal 31b when the opening / closing mechanism is tripping. As the operating device B1a, the same device as that in the first embodiment can be used. Here, the short-circuit switch 25 does not short-circuit the re-closing prevention switch r ₁ , but since the coil 11 is energized through the normally open contact, the operation is similar to that of the first embodiment. Other configurations and operations are similar to those of the first embodiment.

(Embodiment 3) The circuit breaker A2a of this embodiment
As shown in FIG. 3, four terminals 32a to 32d are provided by adding one terminal to the circuit breaker A1a of the first embodiment. In the first embodiment, the terminal 31a is provided. Is also used to connect the ON switch 21 and the OFF switch to the short-circuit switch 25, whereas the present embodiment is different in that the short-circuit switch 25 is connected using the dedicated terminals 32b and 32c. . In short, in the first embodiment, the terminals 31a to 31c are independent, but in the present embodiment, the commonly connected terminals 32c and 32d are provided and connected to one end of the re-closing prevention switch r ₁ . is there.

Therefore, the operating device B2a for operating the circuit breaker A2a is provided with terminals 42a and 42d at both ends of the energizing direction selecting circuit 20, and the short-circuit switch 2 is provided.
5 is a terminal 42b independent of the energization direction selection circuit 20,
42c is provided. In this configuration, the terminal 3 is connected so that the energization direction selection circuit 20 is connected to the series circuit of the coil 11 and the reclosing prevention switch r ₁ via the AC power supply AC.
2a and the terminal 42a are connected via the opening / closing control line L ₁ , and the AC power supply AC is connected between the terminal 32d and the terminal 42d. Further, the terminal 32 is arranged so that the short-circuit switch 25 is connected in parallel to the re-closing prevention switch r _1.
b, 32c and the terminals 42b, 42c and are connected via a respective return control lines L _21, L _22.

By connecting as described above, the operation is the same as that of the first embodiment, and the re-closing preventing switch r ₁ is ON when the opening / closing mechanism is not in the tripping operation. 21 and off switch 22
The main contact point r ₀ can be opened and closed by switching the energization direction to the coil 11 depending on which one is operated. Further, when the opening / closing mechanism section trips, the short-circuit switch 25 is turned on and the re-closing prevention switch r ₁
If the off switch 22 is turned on with the short-circuited,
The opening / closing mechanism can be reset. Other configurations and operations are similar to those of the first embodiment.

(Embodiment 4) In the above embodiment, the coil 11 is used.
The operating devices are provided with the diodes 23 and 24 for determining the energizing direction to the coil. In the following embodiments, however, the circuit breakers are provided with the diodes 12 and 13 to determine the energizing direction to the coil 11. As shown in FIG. 4, the circuit breaker A1b of this embodiment has a state in which a direction switching contact r ₂ that is interlocked with the position of the handle is connected to the coil 11 and one end of the coil 11 is connected to the diode 12. It is configured to select a state in which one end of the coil 11 is connected to the diode 13 and the series circuit of the re-closing preventing switch r ₁ .
Direction switching contact r ₂ is in a normal state a of being interlocked with the opening and closing of the main contact r _0, connect the coil 11 to the diode 12 at the time of opening of the main contact r _0, at the time of closing of the main contact r ₀ diode 13 The coil 11 is connected to the series circuit of the re-closing prevention switch r ₁ . It goes without saying that the diodes 12 and 13 are connected to the coil 11 in opposite polarities. Further, in the abnormal state, the coil 11 is kept connected to the series circuit of the diode 13 and the re-closing prevention switch r ₁ . This circuit breaker A1b has a terminal 33 connected to one end of the diode 12.
a, two terminals 33b and 33c connected to both ends of the series circuit of the diode 13 and the re-closing prevention switch r ₁ .
And a terminal 33d connected to one end of the coil 11.

As described above, the diodes 12, 13 for determining the energizing direction of the coil 11 in the circuit breaker A1b.
Therefore, the operating device B1b does not need a diode for switching the energizing direction, and basically includes an on switch 21, an off switch 22 and a short circuit switch 25 as energizing direction selecting means. It will be good. That is, one ends of the on switch 21 and the off switch 22 are commonly connected and the terminal 43d is connected thereto, and the other ends of the on switch 21 and the off switch 22 are connected to the terminals 43a and 43b. Further, a series circuit of a short circuit switch 25 and a diode 26 is connected in series to the off switch 22, and the short circuit switch 25 and the diode 2 are connected.
A series circuit with 6 is connected between terminals 43b and 43c.

The circuit breaker A1b and the operating device B1b are
By connecting the terminals 23a, 23b and the terminals 43a, 43b and the respective closing control lines L _11, L _12, and ON switch 21 and OFF switch 22 the diodes 12, 1
3 and the terminal 33c and the terminal 43c are connected via the return control line L ₂ to form a series circuit of the short circuit switch 25 and the diode 26 and a series circuit of the diode 13 and the re-closing prevention switch r _1. An AC power supply AC is connected between the terminals 33d and 43d in parallel with the circuit. Here, the diode 26 is connected to the coil 11 with the same polarity as the diode 13.

However, when the circuit breaker A1b is in a normal state, the coil 11 causes the diode 1 to move when the main contact r ₀ is opened.
When the on switch 21 is turned on, a current flows through the coil 11 from the top to the bottom of FIG. 4 to close the main contact r ₀ . Similarly, when the main contact r ₀ is closed, the coil 11 is connected to the diode 13 via the re-closing prevention switch r _1, and therefore, when the off switch 22 is turned on, the coil 11 is connected to the bottom of FIG. A current flows upwards from and the main contact r ₀ is opened.

On the other hand, when the circuit breaker A1b is in an abnormal state and trip operation is turned on again preventing switch r ₁
Is off, and the coil 11 is connected to the re-closing prevention switch r ₁ through the direction switching contact r ₂ . Therefore, if the off switch 22 is turned on while the short-circuit switch 25 is turned on and the re-closing prevention switch r ₁ is short-circuited, the coil 11 can be energized and the main contact r ₀ is kept off. The opening / closing mechanism can be reset. That is, if the opening / closing mechanism section trips and the re- closing prevention switch r ₁ is turned off,
The main contact r ₀ is opened, but the handle is kept in the vicinity of the closed position, and the direction switching contact r ₂ prevents the coil 11 from being reclosed.
It is kept in a state of being connected to the power switch r ₁ . Therefore, by turning on the off switch 22 together with the short-circuit switch 25, the coil 11 can be energized in the direction to open the main contact r ₀ , and the opening / closing mechanism can be reset. When the main contact r ₀ is opened, the handle falls to the opening side and the direction switching contact r ₂ becomes a state of connecting the coil 11 to the diode 12, so that the ON switch 2
The main contact r ₀ can be closed by operating 1a.

(Embodiment 5) In the circuit breaker A1b having the structure of Embodiment 4, instead of individually providing the ON switch 21 and the OFF switch 22, as shown in FIG. 5, one changeover switch 27 is provided. It is also possible to use the operating device B1c which is also used for the operation of opening and closing the main contact r ₀ . In the operating device B1c, the opening and closing of the main contact r ₀ are operated by the single changeover switch 27, so that the operations of opening and closing the main contact r ₀ are not performed at the same time. . It is desirable to use a switch that returns to the neutral position when not operated, but it does not necessarily have to return to the neutral position. Other configurations are the same as those in the fourth embodiment.

(Embodiment 6) The circuit breaker A2b of this embodiment
Is the circuit breaker A shown in the fourth embodiment, as shown in FIG.
It has a configuration in which a terminal 34c is added to a connection point between the re-closing prevention switch r _{1 of} 1a and the diode 13. That is, the terminals 34a, 34b, 34d, 34e shown in FIG.
Are terminals 33a, 33b, 33c, 33d in FIG.
It corresponds to each.

When the circuit breaker A2b having such a structure is used, the diode 26 is not required in the operating device B2b, so that the short circuit switch 25 is independent of the off switch 22 and both ends of the short circuit switch 25 are separated. Terminal 44c,
44d is provided. Also, the on switch 21
And the off switch 22 are commonly connected at one end to the terminal 44.
e are provided, and terminals 44a and 44b are provided at the other ends, respectively.
Is provided.

The circuit breaker A2b and the operating device B2b are
The terminals 34a, 34b and the terminals 44a, 44b are connected via the opening / closing control lines L ₁₁ , L ₁₂ , and the terminals 34c, 34d and the terminals 44c, 44d are connected via the return control lines L ₂₁ , L ₂₂ . The terminals 34e and 44e are connected so as to connect the AC power supply AC. The operation is similar to that of the fourth embodiment. In the normal state of the circuit breaker A2b, the main contact r ₀ can be opened and closed depending on which of the off switch 21 and the on switch 22 is turned on, and in the abnormal state, the short circuit switch. If the off switch 22 is turned on in the state where 25 is turned on and the re-closing prevention switch r ₁ is short-circuited, the coil 11 can be energized to reset the opening / closing mechanism portion. In this configuration, since the diode 13 can be energized in both the normal state and the abnormal state, the diode is not required in the operating device B2b.

(Embodiment 7) In this embodiment, as shown in FIG. 7, an ON switch 21 and an OFF switch 22 of the operating device B2b shown in Embodiment 6 are provided for the circuit breaker A2b shown in Embodiment 6. The operating device B2c provided with one changeover switch 27 in place of and is used. Other configurations and operations are similar to those of the sixth embodiment.

(Embodiment 8) In this embodiment, as shown in FIG. 8, the re-closing preventing switch r ₁ directly connected to the diode 13 in the embodiment 4 is connected to the coil 11 and the direction switching contact r ₂ . The circuit breaker A1c inserted between is used. Here, the terminal 33c is connected to the connection point between the coil 11 and the re-closing prevention switch r ₁ . Therefore, the same operation device B1b as in the fourth embodiment operates as in the fourth embodiment.
Can be used.

(Embodiment 9) This embodiment is an example in which the same circuit breaker A1c as in Embodiment 8 is combined with the operating device B1c used in Embodiment 5, as shown in FIG.
It operates similarly to the eighth embodiment. (Embodiment 10) As shown in FIG. 10, this embodiment is a circuit breaker of the construction of Embodiment 6 in which a reclosing preventing switch r ₁ is inserted between the coil 11 and the direction switching contact r _2. The container A2c is used. This circuit breaker A2c operates similarly to the circuit breaker A2b of the sixth embodiment, and can be operated using the same operating device B2b.

(Embodiment 11) This embodiment is shown in FIG.
As described above, the circuit breaker A2c having the same configuration as that of the tenth embodiment is installed.
The operating device B2c shown in the seventh embodiment is connected,
It operates similarly to the tenth embodiment. (Embodiment 12) In this embodiment, as shown in FIG.
0, re-close prevention switch r ₁And direction change contact
r₂Circuit breaker A2d in which and are connected with the coil 11 in between.
Is used. Re-closing prevention switch r₁To this position
Even if it is provided, it operates similarly to the tenth embodiment. But
Therefore, the same operating device B2b as in the sixth embodiment can be used.
Wear. Other configurations and operations are similar to those of the tenth embodiment.

(Embodiment 13) In this embodiment, the same operation device B2c as that of the seventh embodiment is applied to the circuit breaker A2d of FIG.
Is used. Other configurations and operations are similar to those of the twelfth embodiment. (Embodiment 14) In this embodiment, as shown in FIG. 14, in the circuit breaker A1b shown in Embodiment 4, terminals 33a and 33b are commonly connected to each other to provide a terminal 35a. A1d is used. Circuit breaker A1
The other configuration of d is the same as that of the circuit breaker A1b of the fourth embodiment, and terminals 35b and 35c corresponding to the terminals 33c and 33d of the fourth embodiment are provided. That is, the number of terminals is reduced as compared with the fourth embodiment.

On the other hand, since the diodes 12 and 13 are commonly connected, in order to switch the energization direction to the coil 11, it is necessary to give signals having different energization directions. In order to satisfy this condition, in the present embodiment, the first embodiment
The operating device B1a having the same configuration as is used. Here, the polarities of the diodes 22 and 23 serially connected to the on switch 21 and the off switch 22 between the terminals 31a and 31c are opposite. The operating device B1a having the same configuration as that of the first embodiment can be used. After all, there is a structural difference from the first embodiment in the presence or absence of the diodes 12, 13 and the direction switching contact r ₂ in the circuit breaker A1d, but the operation is the same as in the first embodiment.

(Embodiment 15) In this embodiment, as shown in FIG. 15, the circuit breaker A1d shown in Embodiment 14 is used and the on-switch 21 and the off-switch of the operating device B1a shown in Embodiment 1 are used. The operation device B1d using the changeover switch 27 instead of the circuit breaker 22 is connected to the circuit breaker A.
It has the structure connected to 1d. This structure also operates similarly to the fourteenth embodiment.

(Embodiment 16) In this embodiment, as shown in FIG. 16, in the circuit breaker A1d shown in Embodiment 14, terminals 36b and 36c are provided at both ends of the re-closing prevention switch r _1.
A circuit breaker A2e having a configuration is used. Therefore, this circuit breaker A2e is the same as the circuit breaker A of the seventh embodiment.
2b terminals 34a and 34b are commonly connected to form a terminal 3
This corresponds to the configuration in which 6a is provided.

Further, since the terminals 36b and 36c are provided at both ends of the re-closing prevention switch r ₁ , the operating device B2a having the same configuration as that of the third embodiment can be used.
With this configuration, the operation is similar to that of the third embodiment. (Embodiment 17) In this embodiment, as shown in FIG. 17, an ON switch 21 is provided for the operating device B2a shown in Embodiment 3 with respect to the circuit breaker A2e having the construction shown in Embodiment 16.
Also, an operating device B2d using a changeover switch 27 instead of the off switch 22 is connected. This structure also operates similarly to the sixteenth embodiment.

(Embodiment 18) In this embodiment, as shown in FIG. 18, a series circuit of an on switch 21 and a diode 23 and a series circuit of an off switch 22 and a diode 24 in an operating device B2a of the third embodiment. The circuit breaker A2e shown in the sixteenth embodiment is operated by using the operation device B2e in which the thyristors 28 and 29 are respectively replaced. That is, the thyristors 28 and 29
Has a function equivalent to a series circuit of a diode and a switch and is connected in anti-parallel to function as a conduction direction selection circuit 20. Therefore, by turning on the thyristors 28 and 29 by an external signal, the operation of the main contact r ₀ becomes possible. In this configuration, when the short-circuit switch 25 is turned on and the thyristor 29 that energizes the coil 11 so as to open the main contact r ₀ is turned on, the opening / closing mechanism section can be reset.

(Embodiment 19) In this embodiment, as shown in FIG. 19, in the circuit breaker A1d of Embodiment 14, a reclosing prevention switch r ₁ is provided between the coil 11 and the direction switching contact r _2. The inserted circuit breaker A1e is used. Other configurations and operations are similar to those of the fourteenth embodiment. That is, the operating device B1a used in the first embodiment is used as in the fourteenth embodiment.

(Embodiment 20) In this embodiment, as shown in FIG. 20, the circuit breaker A1e shown in Embodiment 19 is combined with the operating device B1d shown in Embodiment 15. The operation is similar to that of the fifteenth embodiment. (Example 21) This example, as shown in FIG. 21, the reintroduction prevention switch r ₁ of the circuit breaker A2e in Example 16 inserted circuit breaker between the coil 11 and the direction switching contact r ₂ The device A2f is used, and other configurations are the same as those in the sixteenth embodiment. Therefore, the same operating device B2a as that of the sixteenth embodiment is used.

(Embodiment 22) In this embodiment, as shown in FIG. 22, a circuit breaker A2f having the same structure as that of Embodiment 21 is provided.
The operating device B2d having the configuration shown in the seventeenth embodiment is combined. Other configurations and operations are similar to those of the seventeenth embodiment. (Embodiment 23) In this embodiment, as shown in FIG. 23, a circuit breaker A2f having the same construction as that of Embodiment 21 is combined with an operating device B2e having the construction shown in Embodiment 18. Other configurations and operations are similar to those of the eighteenth embodiment.

(Embodiment 24) In this embodiment, as shown in FIG. 24, in the circuit breaker A1d of Embodiment 14, a re-closing preventing switch r ₁ is inserted between the terminal 35a and the diodes 12 and 13. The circuit breaker A1f described above is used, and other configurations such as the operating device B1a are the same as those of the first embodiment.
The same as 4.

(Embodiment 25) This embodiment is a combination of the circuit breaker A1f shown in Embodiment 24 and the operating device B1d shown in Embodiment 15, as shown in FIG. Operates as in Example 15. (Embodiment 26) In this embodiment, as shown in FIG. 26, the circuit breaker in the circuit breaker A2e of the embodiment 16 in which a re-closing preventing switch r ₁ is inserted between the terminal 36a and the diodes 12 and 13 is used. The device A2g is used, and other configurations such as the operating device B2a are the same as those in the sixteenth embodiment.

(Embodiment 27) This embodiment is a combination of the circuit breaker A2g shown in Embodiment 26 and the operating device B2d shown in Embodiment 17, as shown in FIG. Operates as in Example 17. (Embodiment 28) This embodiment is a combination of the circuit breaker A2g shown in Embodiment 26 and the operating device B2e shown in Embodiment 18, as shown in FIG.
8 operates in the same manner.

(Embodiment 29) In this embodiment, as shown in FIG. 29, in the circuit breaker A1d of Embodiment 14, a re-closing prevention switch r ₁ is connected to a direction switching contact r ₂ via a coil 11. The circuit breaker A1g having the above configuration is used, and other configurations such as the operating device B1a are similar to those of the fourteenth embodiment.

(Embodiment 30) This embodiment is a combination of the circuit breaker A1g shown in Embodiment 29 and the operating device B1d shown in Embodiment 15, as shown in FIG. Operates as in Example 15. (Embodiment 31) In this embodiment, as shown in FIG. 31, in the circuit breaker A2e according to Embodiment 16, a re-closing preventing switch r ₁ is sandwiched by a coil 11 and a direction switching contact r ₂ is interposed.
The circuit breaker A2h having the configuration connected to is used, and other configurations such as the operating device B2a are similar to those of the sixteenth embodiment.

(Embodiment 32) This embodiment is a combination of the circuit breaker A2h shown in Embodiment 31 and the operating device B2d shown in Embodiment 17, as shown in FIG. Operates as in Example 17. (Embodiment 33) In this embodiment, as shown in FIG. 33, the circuit breaker A2h shown in the embodiment 31 is combined with the operating device B2e shown in the embodiment 18.
8 operates in the same manner.

(Embodiment 34) In each of the above-mentioned embodiments, the off switch 22 (or the changeover switch 27, the thyristor 29) is turned on together with the short circuit switch 25 for resetting after the opening / closing mechanism has tripped. However, in this embodiment, as shown in FIG. 34, the operating device B2b 'in which the reset switch 30 is provided in parallel with the off switch 22 is used. The configuration shown in FIG. 34 corresponds to the twelfth embodiment, and the reset switch 30 used is only turned on at the time of operation. In this configuration, since the reset switch 30 and the short-circuit switch 25 are turned on at the same time, opening / closing operation of the main contact r ₀ by the on-switch 21 and the off-switch 22 and the short-circuit switch 2 are performed.
5 and the operation of resetting the opening / closing mechanism by the reset switch 30 are clearly distinguished.

The present embodiment is not limited to the structure of the twelfth embodiment, but can be applied to any of the structures of the first to thirty-third embodiments. For example, the structure of the thirty-third embodiment is applied. Then, as shown in FIG. 35, the operating device B2e 'in which the reset switch 30 is connected in parallel to the thyristor 29 is used. (Thirty-Fifth Embodiment) In the thirty-fourth embodiment, separate switches are used for the short-circuit switch 25 and the reset switch 30, and the operation section is different. However, in the present embodiment, as shown in FIG. Interlock with the short-circuit switch 25 (that is, the reset switch 3
0 and the short-circuit switch 25 can be operated)
By using the operation device B2b ″ thus configured, the opening / closing mechanism can be reset by one operation.
6 shows an example in which the technical idea of the present embodiment is applied to the twelfth embodiment, but the technical idea of the present embodiment is applicable to any of the first to thirty-seventh embodiments. When applied to the configuration of Example 37, the operating device B2e ″ having the configuration as shown in FIG. 37 is used.

(Embodiment 36) In the following embodiment, an example will be shown in which the opening / closing mechanism can be reset only by operating one switch. In this embodiment, as shown in FIG.
It is applied to the circuit breaker A1g used in Example 29, and the operating device B1e is an on switch 21.
And a diode 23 in series, an energization direction selection circuit 20 in which an OFF switch 22 and a diode 24 are connected in antiparallel in series, a short circuit switch 25 and a diode 26 connected to one end of the energization direction selection circuit 20. And a series circuit of. That is, for the operating device B1a having the same configuration as that of the first embodiment used in the twenty-ninth embodiment,
It has a form in which a diode 26 connected in series to the short-circuit switch 25 is added. The operating device B1e includes an energization direction selection circuit 20, a short-circuit switch 25, and a diode 26.
Terminals 41a and 41b are provided at both ends of the series circuit with
Further, a terminal 41c is provided at a connection point between the energization direction selection circuit 20 and the short circuit switch 25. Here, the diode 26 is set to have a polarity that energizes in the same direction as when the off switch 22 is turned on when viewed from the terminal 41c.

However, the circuit breaker A1g and the operating device B
For connection with 1e, the terminal 35a of the circuit breaker A1g is connected to the terminal 41a of the operating device B1e via the opening / closing control line L ₁ , and the terminal 35b is connected to the terminal 41b via the return control line L _2.
AC power source A between the terminals 35c and 41c.
Connect C. Due to this connection, the main contact point r ₀ can be opened and closed by turning on the on switch 21 and the off switch 22 of the operating device B1e. Also, for resetting after the opening / closing mechanism trips,
When only the short-circuit switch 25 is turned on, the coil 11 is energized and the opening / closing mechanism section is reset. The scope of application of the technical idea of the present embodiment is not limited to the 29th embodiment, but can be applied to any of the structures of the 1st to 33rd embodiments.

(Embodiment 37) In this embodiment, as shown in FIG. 39, the ON switch 21 and the diode 23 in the operating device B1e of the embodiment 36 are connected to the circuit breaker A1d shown in the embodiment 14. Series circuit and off switch 2
The operation device B1f is used in which the serial circuit of 2 and the diode 24 is replaced with thyristors 28 and 29, respectively. Here, the diode 26 is provided between the terminals 41b and 41c.
However, in the usage pattern of the present embodiment, this polarity matches the current polarity when the off switch 22 is on. Therefore, the opening and closing of the main contact r ₀ can be controlled by the trigger signal to the thyristors 28 and 29. The other structure is similar to that of the 36th embodiment.

(Embodiment 38) In this embodiment, as shown in FIG. 40, the circuit breaker A1e shown in embodiment 19 is combined with the operating device B1f shown in embodiment 37. , And operates in the same manner as in the thirty-seventh embodiment. (Embodiment 39) In this embodiment, as shown in FIG. 41, in the circuit breaker A1f shown in the embodiment 24, the operation device B1f 'in which the diode 26 is omitted from the operation device B1f shown in the embodiment 37 is used. Which is a combination of
It operates similarly to 7.

(Embodiment 40) In this embodiment, as shown in FIG. 42, the diode 2 of the operating device B1f shown in the embodiment 29 is different from the circuit breaker A1g shown in the embodiment 29.
This is a combination of operating devices B1g in which the polarities of 6 are connected in the opposite direction, and operates in the same manner as in Example 37.

(Embodiment 41) In this embodiment, as shown in FIG. 43, a switching contact is used as the reclosing prevention switch r ₁ , and one end is connected to the connection point between the direction switching contact r ₂ and the coil 11. By providing the trip detection contact r ₃ that is opened, the opening / closing mechanism unit can be reset by turning on only the short-circuit switch 25 after the tripping operation of the opening / closing mechanism unit.

That is, the circuit breaker A3b is the same as that of the first embodiment.
The circuit breaker A2d shown in 2, as switching contact reclosing prevention switch r _1, the connection point between the other end direction switching contact r ₂ of the coil 11 is turned on again preventing switch r ₁
In conjunction with this, one end of the trip detection contact r ₃ which is turned on at the time of trip operation is connected. On the other hand, the operating device B2f, to the operating device B2b used in Example 12, provided a diode D ₁ which is one end on the switch 21 and OFF switch 22 are connected in common, the diode D ₁
Have configured the other end to connect to the trip detection contacts r _3. At the time of trip, the trip detection contact r ₃ is turned on, the AC power supply AC is connected to one end of the short-circuit switch 25, and the coil 11 is connected to the other end of the short-circuit switch 25 via the re-closing prevention switch r _1. When turned on, a current flows in the coil 11 in the direction of opening the main contact r ₀ through the diode D ₁ .

As described above, if only the short circuit switch 25 is turned on, the on switch 21 and the off switch 2 are turned on.
It is possible to reset the opening / closing mechanism section without operating 2. Technical idea of the present embodiment, reintroduction prevention switch r ₁ and switching contact, if adding the trip detection contact r _3, can be applied to a circuit breaker having a structure different from that of the circuit breaker A2d Example 12 Is. Further, the operating device B2f is not limited to the one having the above-described configuration, and for example, as shown in FIG.
Of the 2f, the operation device B2g in which the on switch 21 and the off switch 22 are replaced by the thyristors 28 and 29 may be used.

(Embodiment 42) In this embodiment, as shown in FIG. 45, an operating device B2h in which the short-circuit switch 25 is turned on / off by an external signal to the operating device B2b.
Is used. That is, the short-circuit switch 25 is a contact of the relay Ry, and opens / closes the contact by an external signal to the coil of the relay Ry. Here, FIG.
Then, in the twelfth embodiment, the short-circuit switch 25 is set to the relay R.
Although an example in which the short circuit switch 25 is replaced with y is shown, it is possible to replace the short circuit switch 25 with a switch element that is opened / closed by an external signal like the relay Ry in other embodiments.

(Embodiment 43) In the following embodiment, an example of using an operating device capable of displaying the operation of the circuit breaker will be shown. In this embodiment, as shown in FIG. 46, with use of the switching contact as cycling prevention switch r _1, reintroduced prevention switch r ₁ and the direction switching contact r ₂ and the coil 1
A circuit breaker A3d having a configuration connected through 1 is used. That is, this circuit breaker A3d is the same as the circuit breaker A2d of the twelfth embodiment, except that the re-closing prevention switch r ₁ is used as a switching contact.

On the other hand, the operating device B3a has a structure in which a series circuit of a display lamp 51 formed of a light emitting diode and a current limiting resistor R ₁ is added to the operating device B2b shown in the second embodiment. The display lamp 51 has an information signal line L.
_It is connected via ₃ to the contact which is energized at the time of trip in the re-closing prevention switch r ₁ . Thus, display lamp 51 is in the normal state of the circuit breaker A3d is turned off from one end by reintroduction prevention switch r ₁ is open, in the abnormal state through the reintroduction prevention switch r ₁ AC power supply It is connected to AC and lights up.

As described above, by using the operating device B3a having this structure, the abnormal state of the circuit breaker A3d can be notified by turning on / off the display lamp 51. The technical idea of this embodiment can be applied to other embodiments. For example, if it is applied to the configuration of the 33rd embodiment, as shown in FIG. 47, the circuit breaker A2h.
The circuit breaker A3e using the re-closing prevention switch r ₁ as a switching contact may be configured, and the operating device B3b in which the display lamp 51 is added to the operating device B2e may be configured.

(Embodiment 44) In this embodiment, as shown in FIG. 48, with respect to the structure of embodiment 43 shown in FIG. 46, an on switch 21 and an off switch 22 are provided with display lamps 52 and 53 and resistors, respectively. An operating device B3c in which a series circuit of R ₂ and R ₃ is connected in parallel is used. The indicator lamps 52 and 53 are light emitting diodes and are connected so as to have the same polarity as the corresponding diodes 12 and 13 provided in the circuit breaker A3d.

According to the above configuration, if the circuit breaker A3d is in a normal state, the coil 11 is connected to the diode 12 through the direction switching contact r ₂ when the main contact r ₀ is opened, so that the on switch 21 is turned on. The display lamp 52 connected in parallel with the OFF switch 22 is turned on, and the display lamp 53 connected in parallel with the OFF switch 22 is turned ON when the main contact r ₀ is closed. Thus, in the normal state, the display lamps 52, 5 are
It lights up alternatively according to the open / closed state of 3. On the other hand, when the open / close mechanism of the circuit breaker A3d trips and enters an abnormal state, the re-closing prevention switch r ₁ is inverted to cut off the power supply path to the display lamps 52 and 53, and to the display lamp 51. Since the current-carrying path is closed, the display lamp 51 lights up to indicate the operation of the opening / closing mechanism section. It goes without saying that the technical idea of this embodiment can be applied to other embodiments.

(Embodiment 45) In this embodiment, as shown in FIG.
Is opened and closed using relay Ry, and circuit breaker A
Between the connection point between the coil 11 is turned on again preventing switch r ₁ and the AC power source AC in 3d, the operation device by adding the resistance R ₄ of the current limiting a display lamp 54 that indicates the normal state of the circuit breaker A3d B3d Is used. In the operating device B3d, the display lamps 51 and 54 are alternatively turned on by switching the re-closing preventing switch r ₁ . In short, if the circuit breaker A3d is in a normal state, the display lamp 54 is turned on, and an abnormal state (after trip operation)
If so, the display lamp 51 is turned on. Further, in the normal state, as described in the 44th embodiment, the display lamps 52 and 53 are alternatively turned on according to the open / closed state of the main contact r ₀ .
The other structure is similar to that of the forty-fourth embodiment.

(Embodiment 46) In this embodiment, as shown in FIG.
5 is opened and closed using relay Ry, and relay Ry
Are used with the coil on the display lamp 55 of the operating device B3e configuration a series circuit connected in parallel with the resistor R _5. In this configuration, when the relay Ry is energized to turn on the short-circuit switch 25 after the opening / closing mechanism section has tripped, the display lamp 55 is turned on, and the circuit breaker A3d.
When the operation of resetting the opening / closing mechanism is performed, the display lamp 55 is turned on. The indicator lamp 55 is lit while the relay Ry is energized even after the opening / closing mechanism is reset. The other structure is similar to that of the forty-fourth embodiment.

(Forty-seventh Embodiment) In the forty-sixth embodiment, the relay Ry is irrespective of whether or not the opening / closing mechanism is reset.
The indicator lamp 55 was lit while the power was on.
In this embodiment, the display lamp 55 is turned off when the opening / closing mechanism is reset. That, and used, equipped with a auxiliary contact r ₄ interlocked with the reintroduction preventing switch r ₁ as a circuit breaker A3d, the auxiliary contact r ₄ is set to turn on when the switching mechanism is tripped operation ing. That is, the re-closing prevention switch r
Auxiliary contact r ₄ when the terminal 34e via a ₁ is connected to the coil 11 is a clear, the auxiliary contact r ₄ is turned on when the terminal 34e is connected to the terminal 34f. On the other hand, as the operation device B3f, the relay Ry of the forty-sixth embodiment to which an auxiliary switch 25a that turns on / off in conjunction with the short-circuit switch 25 is added is used.

However, a series circuit of the return switch SW for operating the relay Ry and the auxiliary contact r ₄ is inserted between the AC power supply AC and the coil of the relay Ry, and the auxiliary switch 25a is inserted in the return switch SW. When connected in parallel, they operate as follows. Here, the return switch SW is arranged in another room such as a management room. First,
For the return operation after the circuit breaker A3d trips, the return switch SW is turned on. At this time, since the auxiliary contact r ₄ is on, the coil of the relay Ry is energized and the display lamp 55 lights up. Therefore,
The short-circuit switch 25 and the auxiliary switch 25a are turned on, and the relay Ry is self-held through the auxiliary switch 25a. After that, when the opening / closing mechanism is reset by energizing the coil 11 through the short-circuit switch 25, the auxiliary contact r ₄ is turned off, the energization to the relay Ry is stopped, and the display lamp 55 is also turned off. in this way,
When the return switch SW is turned on, the relay Ry is energized until the opening / closing mechanism section is reset, and the display lamp 55 is turned on. After the opening / closing mechanism section is reset, the relay Ry is energized. Automatically stops and the display lamp 55 goes out.

(Embodiment 48) In this embodiment, as shown in FIG. 52, two auxiliary switches 25b, which interlock with the short-circuit switch 25, are added to the construction of the embodiment 46 shown in FIG.
25c is provided, and the series circuit of one auxiliary switch 25b, the display lamp 56 and the resistor R ₆ is connected to the display lamp 51 and the resistor R 6.
₁ parallel connected to the series circuit of the, between the resistor R ₆ and the connection point and the terminal 44c of the auxiliary switch 25b, the operation of the configuration of connecting the series circuit of the auxiliary switch 25c and indicators 57 and the resistor R ₇ The device B3g is used. Also,
In the operation device B3g, a reset switch 30 is connected in parallel to the off switch 22. Here, the auxiliary switches 25b and 25c are turned on with the short-circuit switch 25.
Off is reversed.

Using the operating device B3g having such a structure, it operates as follows. That is, since the auxiliary switches 25b and 25c are on when the relay Ry is not energized, the indicator lamp 57 is turned on when the circuit breaker A3d is in the normal state. At this time, the display lamps 52 and 53 are alternatively turned on according to the open / closed state of the main contact r ₀ . The display lamps 51, 55, 56 are off.

When the circuit breaker A3d trips,
The indicator lamp 51 is activated by the operation of the re-closing prevention switch r _1.
Then, the display lamp 51 lights up.
At this time, the display lamp 56 also lights up. Here, in order to perform the operation of resetting the circuit breaker A3d, the reset switch 30 is turned on and at the same time the relay Ry
When the indicator lamp 55 is turned on and the short-circuit switch 25 is turned on, the auxiliary switches 25b and 25c are turned off and the indicator lamp 56 is turned off. When the short-circuit switch 25 is turned on and the opening / closing mechanism is reset, the auxiliary switches 25b and 25c are turned on and the display lamp 57 is turned on after the energization of the relay Ry is stopped.

On the front surface of the operating device B3g, as shown in FIG. 52 (b), an on switch 21, an off switch 22, a reset switch 30, and respective display lamps 51 to 53, 55 to 55.
If 57 is arranged, each of the display lamps 51 to 53 is alternatively turned on in response to the operation of the on switch 21, the off switch 22, and the reset switch 30, and the display lamps 55 to 57 are in a normal state. The circuit breaker A3 is turned on in response to the non-resettable state and the resettable state.
The operating state of d can be known.

(Embodiment 49) In this embodiment, as shown in FIG. 53, with respect to the circuit breaker A2d shown in Embodiment 12, an indicator lamp 52, which is turned on according to the open / close state of the main contact r ₀ , 53 is provided, and a changeover switch 27 that reverses from the state of FIG. 53 only when being operated is used as the on switch 21 and the off switch 22 in the operating device B2i. One contact of the changeover switch 27 has a resistance R ₁₁
Circuit breaker A2 via the series circuit of the capacitor and the capacitor C _1.
connected to the terminal 34a of d, and has a resistor R ₁₁ and a capacitor C ₁
The gate of the thyristor S ₁ is connected to a connection point of the thyristor S ₁ via a resistor R ₁₂ and a display lamp 52 formed of a light emitting diode. The thyristor S ₁ is connected between the other contact and one end of the capacitor C ₁ of the change-over switch 27, along with another thyristor S ₂ is connected in antiparallel to the thyristor S _1, the transistor Q ₁ emitter - A series circuit of a collector, a diode D ₂ and a resistor R ₁₂ is connected in parallel. A display lamp 53 composed of a light emitting diode is connected between the connection point between the resistor R ₁₂ and the display lamp 52 and the base of the transistor Q ₁ .

When the main contact ₀ is open (state of FIG. 53), the current flows through the diode 12, so that the capacitor C ₁ is charged through the resistor R ₁₁ and the indicator lamp 52-thyristor S. _A current flows through the cathode of the gate-thyristor S ₁ of ₁ to turn on the display lamp 52. Next, when the change-over switch 27 is operated, the AC power supply AC is connected to the anode of the thyristor S ₁ , and the thyristor S ₁ is turned on by the charge of the capacitor C ₁ , and the coil 11 is energized through the diode 12 and the main contact point is reached. r ₀ is closed. Then, when the changeover switch 27 is returned to the original state, the direction changeover contact r ₂ is inverted, so that the current flows through the diode 13 and the display lamp 53 is energized through the transistor Q _1. . Next, when the changeover switch 27 is operated again, a current flows through the path of the transistor Q ₁ -diode D ₂ -resistor R ₁₃ and the thyristor S
_{When 2} is turned on, a current flows in the coil 11 in a direction to open the main contact r ₀ . In short, the main contact r ₀ is opened and closed each time the changeover switch 27 is operated, and when the changeover switch 27 is not operated, the display lamps 52 and 53 corresponding to the open / closed state of the main contact r ₀ are turned on.

On the other hand, when the opening / closing mechanism section trips when the main contact point r ₀ is closed, the re-closing preventing switch r ₁ is turned off, so that no current flows through the changeover switch 27. Here, if you turn on the short-circuit switch 25, the short-circuit switch 25 coil 11 diode 13 capacitor C ₁ - resistor R ₁₁ - current flows through a path of the changeover switch 27. However, at this time, sufficient current does not flow through the coil 11 to open and close the main contact r _0, and both the display lamps 52 and 53 are off. Short circuit switch 25
When the changeover switch 27 is operated with the switch turned on,
The thyristor S ₂ is turned on, the coil 11 is energized, and the opening / closing mechanism is reset, as in the case of opening the main contact r ₀ . In this way, the opening / closing mechanism can be reset by the opening operation by the short-circuit switch 25 and the changeover switch 27.

[0083]

The remote control circuit breaker according to any one of claims 1 to 4 is connected in series with the coil and is turned on when the opening / closing mechanism is in a normal state and is turned off when the opening / closing mechanism is in an abnormal state. Since the switch is provided and terminals are provided at both ends of the circuit passing through the coil and the re-closing prevention switch, and the terminals are provided between the coil and the re-closing prevention switch, the coil and the re-closing prevention switch are By energizing between the terminal and the one end of the coil, it is possible to bypass the re-closing prevention switch and energize the coil. The effect of being able to reset the opening / closing mechanism by allowing the coil to be energized by another operation while prohibiting the resetting of the opening / closing mechanism by opening / closing the main contact with the prevention switch Than is achieved.

In the operating device according to any one of claims 5 to 7, in addition to the energizing direction switching means for switching the energizing direction to the coil, the returning means for avoiding the re-closing prevention switch and energizing the coil is possible. Since the resetting means is provided separately from the energizing direction switching means, the opening / closing mechanism is reset, and while avoiding the risk of inadvertent resetting in the state where the abnormality has not been cleared, There is an advantage that it can be reset by remote control.

The operating device according to claims 8 to 11 is
Since an indicator is provided to notify the abnormal state of the opening / closing mechanism, the operating device can tell that the opening / closing mechanism of the remote control type circuit breaker is in a trip state. There is an advantage that the operation corresponding to the operating state of can be performed.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a first embodiment.

FIG. 2 is a circuit diagram showing a second embodiment.

FIG. 3 is a circuit diagram showing a third embodiment.

FIG. 4 is a circuit diagram showing a fourth embodiment.

FIG. 5 is a circuit diagram showing a fifth embodiment.

FIG. 6 is a circuit diagram showing a sixth embodiment.

FIG. 7 is a circuit diagram showing a seventh embodiment.

FIG. 8 is a circuit diagram showing an eighth embodiment.

FIG. 9 is a circuit diagram showing a ninth embodiment.

FIG. 10 is a circuit diagram showing a tenth embodiment.

FIG. 11 is a circuit diagram showing an eleventh embodiment.

FIG. 12 is a circuit diagram showing a twelfth embodiment.

FIG. 13 is a circuit diagram showing a thirteenth embodiment.

FIG. 14 is a circuit diagram showing a fourteenth embodiment.

FIG. 15 is a circuit diagram showing a fifteenth embodiment.

FIG. 16 is a circuit diagram showing an example 16;

FIG. 17 is a circuit diagram showing a seventeenth embodiment.

FIG. 18 is a circuit diagram showing an eighteenth embodiment.

FIG. 19 is a circuit diagram showing an example 19;

FIG. 20 is a circuit diagram showing an twentieth embodiment.

FIG. 21 is a circuit diagram showing an example 21.

FIG. 22 is a circuit diagram showing an example 22.

FIG. 23 is a circuit diagram showing a twenty-third embodiment.

FIG. 24 is a circuit diagram showing an example 24.

FIG. 25 is a circuit diagram showing an example 25.

FIG. 26 is a circuit diagram showing an example 26.

FIG. 27 is a circuit diagram showing an example 27.

FIG. 28 is a circuit diagram showing an example 28.

FIG. 29 is a circuit diagram showing an example 29.

FIG. 30 is a circuit diagram showing an example 30.

FIG. 31 is a circuit diagram showing an example 31.

FIG. 32 is a circuit diagram showing an example 32.

FIG. 33 is a circuit diagram showing an example 33.

FIG. 34 is a circuit diagram showing an example 34.

FIG. 35 is a circuit diagram showing another example of the working example 34;

FIG. 36 is a circuit diagram showing an example 35.

FIG. 37 is a circuit diagram showing another example of the working example 35.

FIG. 38 is a circuit diagram showing an example 36.

FIG. 39 is a circuit diagram showing an example 37.

FIG. 40 is a circuit diagram showing an example 38.

FIG. 41 is a circuit diagram showing an example 39.

42 is a circuit diagram showing Embodiment 40. FIG.

FIG. 43 is a circuit diagram showing an example 41.

FIG. 44 is a circuit diagram showing another example of the forty-first embodiment.

45 is a circuit diagram showing another example of the working example 42; FIG.

FIG. 46 is a circuit diagram showing a working example 43.

FIG. 47 is a circuit diagram showing another example of the working example 43.

FIG. 48 is a circuit diagram showing an example 44.

FIG. 49 is a circuit diagram showing Embodiment 45.

FIG. 50 is a circuit diagram showing an example 46.

51 is a circuit diagram showing Embodiment 47. FIG.

52 is a circuit diagram showing Example 48. FIG.

53 is a circuit diagram showing an embodiment 49. FIG.

[Explanation of symbols]

11 coil 12 diode 13 diode 32a-32d terminal 21 on switch 22 off switch 25 short-circuit switch 27 changeover switch 28, 29 thyristor 30 reset switch 31a-31c terminal 32a-32d terminal 33a-33d terminal 34a-34e terminal 35a-35c terminal 36a -36d Terminal 51 Display lamp 55 Display lamp A1a-A1g Circuit breaker A2a-A2h Circuit breaker A3a-A3f Circuit breaker B1a-B1g Operating device B1f 'Operating device B2a-B2h Operating device B2b' Operating device B2b "Operating device B2e 'Operating device B2e' Operating devices B3a to B3g Operating device L ₁ Open / close control line L ₁₁ Open / close control line L ₁₂ Open / close control line L ₂ Return control line L ₂₁ Return control line L ₂₂ Return control line L ₃ Information signal line r ₀ Main Contact r ₁ Re-closing prevention switch r ₂ direction Switching contact

Claims (11)

(57) [Claims] 1. An opening / closing mechanism section for driving the main contacts to open / close and forcibly opening the main contacts by shifting from a normal state to an abnormal state when an abnormality is detected, and an opening / closing mechanism section according to the energization direction to the coil. An electromagnet device to be opened and closed, a re-closing prevention switch that is connected in series to the coil of the electromagnet device, is turned on when the opening and closing mechanism is in a normal state, and is turned off in an abnormal state, a coil and a re-closing prevention switch. A remote control circuit breaker, comprising: at least three terminals respectively connected to both ends of the series circuit and the connection point between the coil and the reclosing switch. 2. An opening / closing mechanism section for driving the main contacts to open / close and forcibly opening the main contacts by shifting from a normal state to an abnormal state when an abnormality is detected, and an opening / closing mechanism section according to the energization direction to the coil. An electromagnet device to be opened and closed, and a common contact connected to one end of the coil of the electromagnet device. A normally closed contact is selected when the opening and closing mechanism is in a normal state and a normally open contact is selected in an abnormal state. And a normally-closed contact and a normally-open contact of the re-closing prevention switch, and at least three terminals respectively connected to the other end of the coil. 3. An opening / closing mechanism section for driving the main contacts to open / close and forcibly opening the main contacts by shifting from a normal state to an abnormal state when an abnormality is detected, and an opening / closing mechanism section according to the energization direction to the coil. An electromagnet device to be opened and closed, and a common contact connected to one end of the coil. In the normal state, the first contact and the second contact are selected in conjunction with the opening and closing of the main contact, and in the abnormal state, the second contact is selected.
Via a switching contact for selecting a contact of the first coil, a first diode which has one end connected to the one end of the coil through the first contact and allows passage of a current in a direction of closing the main contact, and a second contact. And a second diode, one end of which is connected to the one end of the coil to allow passage of a current in the direction of opening the main contact, and at least the second diode is connected in series and is turned on when the switching mechanism is in a normal state. It is connected to both ends of the series circuit including the second diode and the reclosing prevention switch, the other end of the coil, and the other end of the first diode, respectively, which is turned off when the state is abnormal. A remote controlled circuit breaker comprising at least four terminals. 4. An opening / closing mechanism section for driving the main contacts to open / close and forcibly opening the main contacts by shifting from a normal state to an abnormal state when an abnormality is detected, and an opening / closing mechanism section according to the energization direction to the coil. An electromagnet device to be opened and closed, and a common contact connected to one end of the coil. In the normal state, the first contact and the second contact are selected in conjunction with the opening and closing of the main contact, and in the abnormal state, the second contact is selected.
Via a switching contact for selecting a contact of the first coil, a first diode which has one end connected to the one end of the coil through the first contact and allows passage of a current in a direction of closing the main contact, and a second contact. A second diode, one end of which is connected to the one end of the coil to allow the passage of a current in the direction of opening the main contact, and at least the second diode which is connected in series to the second diode and is opposite to the second contact in the series circuit. One end of is connected to the other end of the first diode and is turned on when the opening / closing mechanism is in a normal state and is turned off when the opening / closing mechanism is in an abnormal state, and one end on the coil side of the re-closing prevention switch. And a remote control circuit breaker comprising at least three terminals respectively connected to the other end of the coil and the other end of the first diode. 5. The method of claim 1, is connected via a third aspect, the switching control line supplying a current to the coil for opening and closing a main contact to the remote controlled circuit breaker according to any one of 請 Motomeko 4 ,
In the operating device having a conduction direction selection means for selecting the direction of the current supplied to the coil through the switching control line, to the terminal that is connected between the coil and reenter prevention switch in a remote-controlled circuit breaker An operating device for a remote control type circuit breaker, characterized in that the operating device is connected through a return control line, and includes a return means for energizing the coil while avoiding a re-closing prevention switch during operation. 6. The restoring means is a short-circuit switch connected in parallel to the re-closing prevention switch, and the short-circuit switch passes a current in a direction for opening the main contact. Remote control type circuit breaker operating device. 7. An on-switch and an off-switch as energizing direction selecting means, and a reset switch connected in parallel to the off-switch, the reset switch being turned on in conjunction with turning on of the short-circuit switch. An operating device for a remote control type circuit breaker according to claim 6. 8. A display device is provided which is connected to the remote control type circuit breaker via an information signal line for passing a signal corresponding to the open / closed state of the main contact of the remote control type circuit breaker and notifies an abnormal condition. 7. A remote control type circuit breaker operating device according to claim 5 or claim 6. 9. The operating device for a remote control type circuit breaker according to claim 8, wherein the indicator is connected in parallel with the reclosing prevention switch together with the short-circuit switch. 10. The re-closing prevention switch has two selection contacts selectively connected to a common contact,
9. The remote control type circuit breaker according to claim 8, wherein one selection contact is connected to one end of the coil, and a short-circuit switch and an indicator are connected between each selection contact and the common contact. Operating device. 11. The remote control circuit breaker operating device according to claim 6, further comprising a resettable display for indicating that the short-circuit switch is turned on.