JP2893015B1 - Breaker electrical operating device - Google Patents

Abstract

The present invention provides an electric operating device for a breaker that can switch the specification of an external input signal and can also switch to an automatic re-input mode. An electric operating device of a breaker which is turned on / off by an electric power source (3) for turning on / off a handle of the breaker (1). It comprises a control circuit 4 and at least two main and sub setting switches 14. Main setting switch 14a
Has a function of switching the operation mode between the automatic re-input mode and the remote operation mode. Sub setting switches 14a to 14
d has a timer setting function in the automatic restart mode and a specification setting function of the external input signal in the remote operation mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric operating device of a breaker for turning a handle of the breaker on and off by an external electric power source.

[0002]

2. Description of the Related Art By operating a handle of a breaker from the outside by an electric power source such as a motor or a solenoid,
2. Description of the Related Art An electric operating device of a breaker capable of remotely turning on and off a breaker has been conventionally known. FIG. 3 is a diagram showing the configuration of a conventional device of this type, in which 21 is a power supply circuit, 22 is a control circuit, 23 is an electric power source such as a motor,
24 is an operation circuit. Reference numeral 25 denotes two external switches for remote operation. In FIG.
An external input signal is input to the operation circuit 24 via the input terminals 26.

However, such a conventional electric operating device for a breaker has a problem that a special circuit must be provided when a user wants to use the electric motor in the following manner. When you want to turn on / off the breaker with only one external switch 25. When it is desired to reduce the number of input terminals 26 in order to efficiently wire a general multiplex transmission device today. Lighting switches and various electronic devices sometimes use one-shot switches for the purpose of power outage countermeasures and power saving.When a power failure occurs in the breaker's electric operating device, the switch is, for example, a seesaw type If the power is turned on or off, the breaker's electric operating device does not operate, and the switch may be kept on.In such a case, when the power is restored, the breaker's electric operating device is immediately turned on. This is because there is a safety problem due to operation. Thus, when you want to operate with a one-shot switch using an instantaneous signal. When the user wants to arbitrarily use either the always illustrated operation of immediately turning off the power of the breaker or the self-holding operation of maintaining the power when the operation wiring is disconnected.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides an electric operating device for a breaker which can switch the specification of an external input signal and can also switch to an automatic restart mode. It was made to provide.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a breaker electric operating device for turning a handle of a breaker on and off by an external electric power source. Circuit, and at least two main and sub setting switches connected to the control circuit. The main setting switch has a function of switching an operation mode between an automatic re-input mode and a remote operation mode. It is controlled by a control circuit to have a timer setting function in the re-input mode and a specification setting function of the external input signal in the remote operation mode.

According to the present invention, the operation mode can be switched between the automatic restart mode and the remote operation mode by switching the main and sub setting switches, and the timer setting in the automatic restart mode by the sub setting switch. Also, it is possible to switch the specification setting of the external input signal in the remote operation mode. Thus, the user can take various usages.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. FIG. 1 is a view showing an embodiment of the device of the present invention, wherein 1 is a breaker such as an earth leakage breaker, and 2 is an electric operation device of the present invention attached to the breaker 1. The electric operating device 2 includes an electric power source 3 composed of a motor or a solenoid for driving the handle of the breaker 1 from outside. The electric power source 3 allows the breaker 1 to be turned on and off.

Reference numeral 4 denotes a control circuit such as a microcomputer for controlling the electric power source 3. In this embodiment, the electric operation device 2
Are provided with seven external input terminals, TB1 and TB2 are connected to the alarm contact output of the breaker 1, and TB3 to TB5 are connected to two external switches 5 and 6 for remote operation. , TB6 and TB7 are connected to an AC power supply 7. 8 is a transformer and 9 is a power supply unit.

In addition, the control circuit 4 is connected to various switches inside the device. Reference numeral 10 denotes a limit switch for detecting that the handle of the breaker 1 is turned on.
Is a limit switch that detects that the switch has been turned off, 1
Reference numerals 2 and 13 denote operation switches at hand.

A setting switch 14 includes at least two switches, a main switch and a sub switch. As shown in FIG. 2, in this embodiment, the setting switch 14 is composed of four dip switches, 14a is a main setting switch, and 14b to 14d are three sub-setting switches. In FIG. 1, the main setting switch 14a is shown independently.

These setting switches 14 are all connected to the control circuit 4, and the control circuit 4 controls each section as follows. First, when the main setting switch 14a is turned on as shown in FIG. 2A, the operation mode is set to the automatic re-input mode. The automatic restart mode is a mode in which when the breaker 1 malfunctions due to lightning or other noises, the automatic restart is performed after a predetermined time. When the main setting switch 14a is turned on, the sub setting switches 14b to 14d function as timer setting switches for setting the time until re-input. For example, the sub setting switch 14b is 1 second, 14c is 10 seconds, and 14d is 1
The timer can be set until the power is turned on again depending on which sub setting switch is turned on, such as minutes.

In addition, in the automatic re-closing mode, the above-mentioned hand operation switches 12 and 13 become effective, and the breaker 1 can be turned on and off by operating the hand operation switches 12 and 13 by an operator.

The main setting switch 14a is set as shown in FIG.
When turned off as in (C) and (D), the operation mode is switched to the remote operation mode. In this remote operation mode, the hand operation switches 12 and 13 are invalidated, and the external input terminal TB
Input from 3 to TB5 is valid. In this case, in order to be able to switch the specification of the external input signal as described above, in the present invention, the sub setting switches 14b to 14b
4d is used, for example, as follows.

That is, when the sub-setting switch 14d is turned on as shown in FIG. 2B, two on / off external switches 5 connected to the external input terminals TB3 to TB5 are connected in the same manner as in the prior art. , 6 can be remotely controlled.

Next, as shown in FIG.
When 4c is turned on, instantaneous input by the instantaneous switch 15 connected to the external input terminals TB3 and TB4 becomes possible. Therefore, when an instantaneous input is input while the breaker 1 is off, the breaker 1 is turned on, and when an instantaneous input is input again, the breaker 1 is turned off.

Next, as shown in FIG.
When 4b is turned on, external input by the alternate switch 16 connected to the external input terminals TB3 and TB4 becomes possible. When the alternate switch 16 is turned on and off, the breaker 1 is turned on and off accordingly.

In this embodiment, the specification of the external input signal can be switched in three ways by the three sub-setting switches 14b to 14d, but the number of sub-setting switches can be increased or decreased as appropriate. is there. Switching of the functions by the main setting switch 14a and the sub setting switches 14b to 14d can be easily performed by the control circuit 4 such as a microcomputer.
Since the control program itself is not a main part of the present invention,
Detailed description is omitted.

[0018]

As described above, the electric operation device of the present invention can switch the operation mode between the automatic re-input mode and the remote operation mode by switching at least two setting switches of main and sub. The timer can be set in the automatic restart mode, and the specification of the external input signal can be set in the remote operation mode. As a result, the following specific effects can be obtained.

If the specifications of the external input signal are switched to those for the instantaneous switch and the alternate switch, the number of operation signal lines can be reduced from the conventional three to two, and the cost of wiring materials and the like can be reduced. When handling a large number of operation signals, a multiplex transmission device is used. However, according to the present invention, the number of input points can be reduced, so that the cost of the system can be reduced. When operating with a small electronic device or the like, the device may be operated with an instantaneous signal for reasons such as power saving of a device built-in relay, but the device of the present invention can easily cope with such a case. When the electric circuit that is normally in the on state is disconnected, it is possible to select whether to turn off the electric circuit or give priority to maintaining the on state according to the application. As described above, since the operation circuit can be arbitrarily switched even if the use of the operation circuit is unspecified, it is not necessary to diversify the device or to provide a special circuit such as a self-holding circuit or a constant excitation relay circuit.

[Brief description of the drawings]

FIG. 1 is a circuit configuration diagram showing an embodiment of the present invention.

FIG. 2 is a diagram illustrating a switching state of a setting switch.

FIG. 3 is a circuit configuration diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Breaker 2 Electric operating device of the present invention 3 Electric power source 4 Control circuit such as microcomputer 5 External switch for turning on 6 External switch for turning off 7 AC power supply 8 Transformer 9 Power supply section 10 Limit switch 11 Limit switch 12 Hand operation switch 13 Hand operation switch 14 Setting switch 14a Main setting switch 14b Sub setting switch 14c Sub setting switch 14d Sub setting switch 15 Instantaneous switch 16 Alternate switch

Claims (1)

(57) [Claims] 1. An electric operating device of a breaker for turning on / off a handle of a breaker by an external electric power source, a control circuit for controlling the electric power source, and at least two main and sub settings connected to the control circuit. The main setting switch has a function of switching the operation mode between the automatic re-input mode and the remote operation mode, the sub-setting switch has a timer setting function in the automatic re-input mode, and has an external function in the remote operation mode. An electric operating device for a breaker, which is controlled by a control circuit so as to have an input signal specification setting function.