JPH118930A - Instrument for measuring information on current application to circuit breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the value of circuit voltage, power, quantity of power, etc., which is supplied to load as current application information by calculating the current and the voltage detected by the current transformer and the transformer within a circuit breaker, and converting the current value, the voltage value, the power value, and the quantity of power into signal output capable of indicating the information. SOLUTION: A current transformer 18 and a transformer 19 for measurement are accommodated in the main body 1 of a circuit breaker, and the current flowing to each conductor 2 separately from the current transformer 4 for overcurrent detection and the voltage (interphase voltage) between the conductors 2 are detected. A maximum current value storage circuit 24 stores and retains the maximum current value Imax. A multiplying circuit 25 which multiplies the outputs of a current A/D conversion circuit 21 and a voltage A/D conversion circuit 22 obtains the output corresponding to the output V of the voltage between the phases and the next, and a multiplying circuit 26 obtains that corresponding to a power W of the load. The outputs from the multiplying circuit 27 are added up into a quantity Wh of power. These outputs are inputted into a display 29 via an indication content selecting means 28. Thus, information on the current, the interphase voltage, and power, the quantity of power, etc., can be obtained from the information on the current supply and current application.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energization information measuring apparatus for displaying or collecting energization information supplied to a load protected by a circuit breaker in association with the circuit breaker. About what can be obtained.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a diagram showing a block configuration of a conventional trip detection circuit of an electronic circuit breaker disclosed in Japanese Patent Application Laid-Open Publication No. HEI 10-115,036. In the figure, 1
Is a circuit breaker main body, 2 is an energized main conductor for energizing a load, 3
Is a switching contact for turning on and off the current of the current-carrying main conductor 2, and 4 is a current transformer for detecting a current flowing through each current-carrying main conductor 2.
5 is a rectifier circuit for rectifying the output of the current transformer 4, 6 is a peak for detecting the instantaneous maximum value of the current flowing through the current-carrying main conductor 2 by performing voltage conversion, A / D conversion processing, etc. on the output from the rectifier circuit 5. A value conversion circuit 7 is an instantaneous timed circuit for outputting a signal when the output of the peak value conversion circuit 6 exceeds a predetermined value, and 8 is an instantaneous timed circuit 7
This is a short time-period circuit that performs a counter-time operation according to the magnitude of the output of the peak value conversion circuit 6 and outputs a signal at a level lower than the operation output of. Reference numeral 9 denotes voltage conversion of the output from the rectifier circuit 5 and A / D conversion.
An effective value conversion circuit 10 for obtaining an output corresponding to the effective value of the current flowing through the current-carrying main conductor 2 by performing a conversion process or the like is a long timed circuit, and a circuit at a rated current depends on the magnitude of the output of the effective value conversion circuit 9. The circuit breaker does not perform the breaking operation, but performs the timed operation at the rated current or more and outputs the signal.

[0003] Reference numeral 11 denotes a trigger circuit,
And the signal output from either the short time limit circuit 8 or the long time limit circuit 10, the switching contact 3 is turned off via the electromagnetic coil 12, and the power supply to the load is cut off. Reference numeral 13 denotes a pre-alarm detection circuit which sends an output to a pre-alarm output circuit 14 at a predetermined current value slightly lower than the rated current, and outputs a pre-alarm display lamp 15
Is turned on to notify that the load current is approaching the breaking operation of the circuit breaker, and a power failure due to the breaking operation of the circuit breaker is notified to eliminate a sudden power failure. Reference numeral 16 denotes a power supply circuit for converting a control power supply for the alarm display lamp 15 from the external power supply 17.

[0004]

In the above-mentioned conventional electronic circuit breaker, the current supply information based on the current flowing through the circuit breaker can be obtained as in the above-mentioned pre-alarm display lamp 15. In addition, there is an electronic circuit breaker having a memory device and having a configuration for knowing a current value during a breaking operation of the circuit breaker for the purpose of analyzing an accident.
However, circuit breakers are originally only the energization information that depends on the energization current, and in recent years the load that requires more stable power supply, such as automated equipment and electronic computers, has increased, and from the viewpoint of comprehensive energy saving, Energization information that depends only on load current has become insufficient.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and includes not only current information depending on a current of a load connected to a circuit breaker but also current information related to a voltage, for example, It is another object of the present invention to provide an energization information measuring device for a circuit breaker that can obtain, as energization information, a circuit voltage value to be supplied to a load, electric power measured from the voltage and current, electric power amount, and the like.

[0006]

According to a first aspect of the present invention, there is provided an apparatus for measuring the energization information of a circuit breaker, comprising: a current transformer which is housed inside the circuit breaker and detects a current applied to the circuit breaker; A transformer for detecting a voltage between the main conductors, and a current and a voltage detected by the current transformer and the transformer are arithmetically processed and converted into a signal output capable of displaying at least a current value, a voltage value, a power value, and a power amount. It comprises arithmetic processing means and a display unit for displaying each display signal output.

According to a second aspect of the present invention, an energization information measuring device for a circuit breaker includes a display content selection means for selecting a content to be displayed on a display unit from each display signal output.

According to a third aspect of the present invention, there is provided a circuit breaker energization information measuring device, wherein the output current of the current transformer for detecting the current of the electronic circuit breaker is set to the primary current. The output is an arithmetic processing input.

According to a fourth aspect of the present invention, there is provided an apparatus for measuring the energization information of a circuit breaker, wherein a current transformer for detecting a current of the electronic circuit breaker is provided with a tertiary winding, and an output of the tertiary winding is provided. This is an arithmetic processing input.

According to a fifth aspect of the present invention, there is provided a circuit breaker energization information measuring device in which an arithmetic processing unit, a display unit, and a display content selection unit are housed separately from the circuit breaker, and the change in the circuit breaker is provided. It is detachably connected to the output terminals of the flow device and the transformer by a connector.

According to a sixth aspect of the present invention, there is provided an energization information measuring device for a circuit breaker, wherein a separately configured energization information measurement display unit is mounted on an operation surface of the circuit breaker.

According to a seventh aspect of the present invention, an energization information measuring device for a circuit breaker has a separate energization information measurement and display unit mounted on a side surface of the circuit breaker.

According to a further aspect of the present invention, there is provided a circuit breaker energization information measuring device, wherein a voltage limiter circuit conducts at a predetermined voltage or higher between an output terminal of a current transformer between a current transformer for obtaining an arithmetic processing input and a connector. Are connected.

According to a ninth aspect of the present invention, in the power supply information measuring device for a circuit breaker, a substantially equal-valued resistance element is connected to a power supply main conductor at both sides of a primary input terminal of a transformer.

According to a tenth aspect of the present invention, an energization information measuring device for a circuit breaker further includes contact output means for outputting a pulse proportional to the amount of electric power calculated by the arithmetic processing means.

According to an eleventh aspect of the present invention, there is provided a circuit breaker energization information measuring device including an analog output unit for calculating a current value and a voltage value by an arithmetic processing unit.

According to a twelfth aspect of the present invention, an energization information measuring device for a circuit breaker includes a measurement output unit for accommodating the contact output means and / or the analog output means.
It is designed to be connected to a display unit by a connector and to be mounted on a circuit breaker.

According to a thirteenth aspect of the present invention, there is provided a circuit breaker energization information measuring device, comprising: a communication interface for transmitting and receiving a message to and from the host computer; A transmission terminal unit that accommodates a message generation unit that organizes a message that answers a request and a communication interface that transmits and receives to and from a host computer is configured separately, and is connected to a display unit including an arithmetic processing unit by a connection connector. It is designed to be mounted on a circuit breaker.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a circuit configuration block diagram of a circuit breaker energization information measuring device according to a first embodiment of the present invention. In the figure, reference numerals 1 to 17 are the same as those in the description of the conventional example. Reference numeral 18 denotes a measuring current transformer for detecting a current flowing through each conductor 2 separately from the current transformer 4 for detecting overcurrent, and 19 denotes a transformer for detecting a voltage between the conductors 2 (inter-phase voltage). The measuring current transformer 18 and the transformer 19 are housed inside the circuit breaker main body 1. 20 is an energization information measurement unit, 21
Is a current A / D conversion circuit for performing an A / D conversion process or the like on the output from the measuring current transformer 18 to obtain a digital output corresponding to the current flowing through the current-carrying main conductor 2. This is a voltage A / D conversion circuit that performs A / D conversion processing or the like to obtain a digital output corresponding to the inter-phase voltage. These A /
The D conversion circuit and processing to be described below are executed by a microprocessor (not shown).

Reference numeral 23 denotes a current current value output (I) for each phase of the current-carrying main conductors 2, and 24 denotes a maximum current value storage circuit, and the latest maximum current value (I
max). 25 is an inter-phase voltage output (V),
26 is a current A / D conversion circuit 21 and a voltage A / D conversion circuit 2
2 is a multiplying circuit for multiplying the output of 2 and the load power (W)
To get the output corresponding to Reference numeral 27 denotes an integrating circuit for integrating outputs from the multiplying circuit 27 to obtain an electric energy (Wh). As for the power (W) and the power amount (Wh), a total power value can be obtained according to the form of wiring to the load. The outputs of the current current value (I), the maximum current value (Imax), the inter-phase voltage (V), the power (W), and the power amount (Wh) are input to the display unit 29 via the display content selection unit 28. .

Since there is no space for providing many indicators on the surface of the circuit breaker main body 1 for displaying these energization measurement results on the display unit 29, necessary indicators are displayed by minimizing the indicators. The content is selected and displayed by the content selection means 28. When a desired display item is selected from a large number of display items by a push button on the display content selecting means 28, the numerical value of the corresponding display item is displayed on the display unit 29. The display example of the energization measurement result described above is a part. In addition, in the case where the zero-phase transformer for detecting the leakage is accommodated in the circuit breaker, the leakage current and the integration of the integrating circuit 27 are reset and displayed at predetermined time intervals. Then, it is possible to display the demand value, the maximum demand value, and the time of occurrence thereof.

The above-described energization information measuring device can obtain information on voltage from the transformer 19 incorporated in the circuit breaker main body 1 and use the voltage information to supply energization information to the load with respect to current. Not only the interphase voltage (V),
Information such as electric power (W) and electric energy (Wh) can also be obtained. Operating power including these microprocessors is supplied from a power supply circuit 16.

Embodiment 2 FIG. FIG. 2 is a circuit configuration block diagram of a circuit breaker energization information measuring device according to a second embodiment of the present invention. In the figure, 1 to 17, 19 to 29
Is the same as described in the first embodiment. Reference numeral 30 denotes a second current transformer, which uses the output current of the current transformer 4 for overcurrent detection as a primary-side input and inputs a secondary output to the current A / D conversion circuit 21. The operation and processing of the second embodiment are the same as those described above, and a description thereof will be omitted.

As described above, since the second current transformer 30 having the output current of the current transformer 4 as the primary side input does not directly contact the power supply voltage, the insulation can be simplified, and the second current transformer 30 is The current transformer 18 can be made smaller than the current transformer 18 for measurement, and can be easily housed in the circuit breaker main body 1.

Embodiment 3 Third Embodiment FIG. 3 is a circuit configuration block diagram of a circuit breaker energization information measuring device according to a third embodiment of the present invention. In the figure, 1-3, 5, 12, 1
9 to 22 are the same as those described in the first embodiment. Reference numeral 31 denotes a current transformer having a tertiary winding 31a. The secondary winding is connected to the rectifier circuit 5 of the overcurrent detection device, and the tertiary winding 31a is connected to the current A / D conversion circuit 21 of the conduction information measurement unit 20. Have been.

As described above, the tertiary winding 31a is connected to the current transformer 31.
In the first embodiment, the overcurrent detection and the current detection of the conduction information measurement can be obtained by one current transformer 31.
The installation space for the current transformer 18 of the present embodiment and the current transformer 30 of the second embodiment becomes unnecessary, and the circuit breaker can be downsized compared to the first and second embodiments.

In FIG. 3, reference numeral 36 denotes a resistance element, and a resistor having substantially the same resistance value is connected to both ends of the primary input of the transformer 19. By connecting the resistance elements 36 in series, the input voltage of the transformer 19 can be reduced,
, The transformer 19 can be downsized. Also,
By connecting two resistance elements 36 having the same resistance value to the circuit to be measured via both sides of the transformer 19, the transformer 19 may have an intermediate potential and the insulation strength may be reduced,
The transformer 19 can be downsized.

Embodiment 4 4 and 5 are a side view and a front view of a circuit breaker energization information measuring device according to a fourth embodiment of the present invention. In the figure, 1, 20, 28, 2
9 is the same as that described in the first embodiment, but the energization information measuring unit 20 is configured separately from the circuit breaker main body 1 and is attached to the operation surface of the circuit breaker main body 1. I have. The display unit 29 and the display content selection means 28 are disposed so as to be in the same plane direction as the operation surface of the circuit breaker main body 1. Reference numeral 32 denotes a lead wire including a connector 33 for taking in the outputs of the current transformers 4, 18, 31 housed in the circuit breaker main body 1 into the energization information measurement display unit 20. The lead wire 32 is detachable from the circuit breaker main body 1 and the energization information measurement display unit 20 by a connector 33.

Therefore, when the energization information measuring unit 20 is unnecessary, it can be removed. Normally, the circuit breaker main body 1 is used only for the original distribution line protection, and when the load energization information is required, the energization information measurement display unit 20 is connected via the connector 33 and the lead wire 32. To obtain energization information. When the lead wire 32 is lengthened, the energization information can be collected at a place different from the place where the circuit breaker main body 1 is installed.

Embodiment 5 6 and 7 are a side view and a front view of a circuit breaker energization information measuring device according to a fifth embodiment of the present invention. In the figure, 1, 20, 28, 2
Reference numerals 9, 32, and 33 are the same as those described in the fourth embodiment. In the fifth embodiment, the energization information measurement unit 20 is attached to the side surface of the circuit breaker main body 1, and the display unit 29 and the display content selection unit 28 are substantially flush with the operation surface of the circuit breaker main body 1. ing. Since the energization information measurement unit 20 is attached to the side surface of the circuit breaker main body 1 as described above, it is not necessary to consider the height of the switchboard when mounting the circuit breaker main body 1 to the switchboard box.

Embodiment 6 FIG. FIG. 8 is a circuit diagram around a connector of a circuit breaker energization information measuring device according to a sixth embodiment of the present invention. In the figure, 1 to 5, 12, 19,
20, 28 to 33, which are the same as those described in the second and fourth embodiments. In the fourth and fifth embodiments, when the connector 33 is pulled out of the circuit breaker main body 1 and the energization information measuring unit 20 is removed, the current transformer 30
Is in an open state, and an abnormal voltage is generated at both ends. The sixth embodiment has been made to prevent this.

Reference numeral 34 denotes a voltage limiting circuit, which is formed by connecting two diodes between the current transformer 30 and the connector 33 on the secondary side so as to be capable of conducting in both directions. Connector 33
When the energization information measurement unit 20 is connected via the power supply, the energization information measurement is performed at a voltage lower than the conduction voltage of the diode, so that there is no conduction. However, when the connector 33 is removed, the voltage on the secondary side of the current transformer 30 rises,
When the voltage becomes equal to or higher than the conduction voltage of the diode, the diode conducts and current flows to the secondary side of the current transformer 30 to prevent abnormal voltage on the secondary side of the current transformer 30.

FIG. 9 shows another example of the sixth embodiment, in which the voltage limiting circuit 35 is formed by a Zener diode. In the other embodiment of FIG. 9 as well, when the energization information measurement unit 20 is connected, the energization information measurement is performed at a voltage lower than the Zener voltage, so there is no conduction. When the connector 33 is removed, the Zener diode conducts, also preventing abnormal voltage on the secondary side of the current transformer 30.

Embodiment 7 FIG. 10 is a circuit configuration block diagram of a circuit breaker energization information measuring apparatus according to Embodiment 7 of the present invention. 11 and 12 are a side view and a front view of the seventh embodiment. In the figure, 1 to 30, 32
Is the same as that described in the first and fifth embodiments. Reference numeral 40 denotes a measurement output unit, which is a measurement information from the energization information measurement unit 20 so that information such as a current (A) flowing between the circuit breaker main body 1, an inter-phase voltage (V), and an electric energy (Wh) can be remotely measured. , A current D / A conversion circuit 41, a voltage D / A conversion circuit 42, a power amount integration circuit 43, and a contact output circuit 44 are integrally incorporated. The measurement output unit 40 is an energization information measurement unit 20
And is attached to the side surface of the circuit breaker main body 1.
The current D / A conversion circuit 41 and the voltage D / A conversion circuit 42 output an amplified analog value in proportion to the current and the voltage, and enable measurement with a remote ammeter or voltmeter. Integration circuit 43
Generates a signal for each predetermined amount of power by integrating a power value corresponding to the load power from the multiplication circuit 26,
The number of pulse outputs proportional to the amount of electric power is output through the contacts. The pulse output of the contact output circuit 44 is integrated by a remote counter to count the amount of power. The operating power of the current D / A conversion circuit 41, the voltage D / A conversion circuit 42, the integrating circuit 43, the contact output circuit 44, and the like is supplied from the power supply circuit 16 of the conduction information measuring unit 20.

The measurement output unit 40 is connected to the energization information measurement unit 20 and can be attached to the side surface of the circuit breaker main body 1, so that a separate instrument transformer,
It is possible to remotely measure the current, voltage, electric energy, etc., which pass through the circuit breaker body 1 without installing and connecting a watt hour meter.

Embodiment 8 FIG. FIG. 13 is a circuit configuration block diagram of a circuit breaker energization information measurement device according to Embodiment 8 of the present invention. FIG. 14 is a side view of the eighth embodiment,
FIG. 15 is a front view, and FIG. 16 is a diagram illustrating an example of a transmission format for receiving and transmitting measurement data according to the eighth embodiment. In the figure, 1 to 30, 32, and 40 to 44 are the same as those described in the seventh embodiment. 50 is a transmission terminal unit, 5
Reference numeral 1 denotes a connection connector for connecting a signal line and an operating power line with the measurement output unit 40 or the energization information measurement unit 20. A communication interface 52 controls reception and transmission of a message with a central processing unit 60 described later. 5
3 is a message analysis circuit, 54 is a transmission data selection circuit, and 55 is a message generation circuit.

A central processing unit (host computer) 60 includes a plurality of transmission terminal units 50 and a transmission line 61.
And an address number is set in the central processing unit 60 and each transmission terminal unit 50. The transmission terminal unit 5 that needs data from the central processing unit 60
0 is called by the address number, and the called transmission terminal unit 50 adds its own address number to the measurement information and returns it to the central processing unit 60. The central processing unit 60 tabulates and analyzes the measurement information from the plurality of transmission terminal units 50 and provides the information to the administrator. Also, an alarm is output for an abnormal value.

The communication interface 52 constantly monitors the message on the transmission line 61 from the central processing unit 60, analyzes only the message addressed to its own address number by the message analyzing circuit 53, and Read the content from. From the contents of the message, the measurement information to be transmitted is selected from various kinds of energization measurement information of the circuit breaker main body 1 held by the energization information measurement unit 20 in response to the measurement data request, and passed to the message generation circuit 55. The message generation circuit 55 creates a message by inserting the required measurement value into a transmission format as shown in FIG.
The data is transmitted from the communication interface 52 to the central processing unit 60.

The transmission terminal unit 50 has a communication interface 52, a message analysis circuit 53, a transmission data selection circuit 54, and a message generation circuit 55 incorporated therein. The measurement output unit 40 is electrically connected to the energization information measurement unit 20 via the connection connector 51, and the transmission terminal unit 50 is electrically connected to the transmission information measurement unit 20 via the connection connector 51, so that the transmission terminal unit 50 can be overlaid and attached.
Further, the transmission terminal unit 50 can be directly mounted on the energization information measurement unit 20. Therefore,
What is necessary is just to select and attach the unit required in the measurement system configuration.

Embodiment 9 FIG. 17 is a side view of a circuit breaker energization information measuring apparatus according to Embodiment 9 of the present invention. In the figure, 1, 50 and 51 are the same as those described in the seventh embodiment. 20 is the fourth embodiment.
This is an energization information measuring unit of the type that is attached to the operation surface of the circuit breaker described in FIG. The energization information measurement unit 20 of this type requires the transmission terminal unit 50 to be in a sandwich state between the operation surface of the circuit breaker body 1 and the energization information measurement unit 20 because the display content selection means 28 and the display unit 29 need to be exposed on the surface. Install. For this reason, the receptacle of the connector 51 of the energization information measuring unit 20 is provided on the back surface. Also, the lead wire 32 connecting the circuit breaker main body 1 and the energization information measuring unit 20 is provided with some margin, and the measurement output unit 40 and / or the transmission terminal unit 50 are selected to be in a sandwich state. It is possible to install.

In each of the above embodiments, the present invention has been described as an energization information measuring and displaying device for an overcurrent protection circuit breaker. It is obvious that the same effect can be obtained by combining the devices.

[Brief description of the drawings]

FIG. 1 is a circuit configuration block diagram of a circuit breaker energization information measuring device according to a first embodiment of the present invention.

FIG. 2 is a circuit configuration block diagram of a circuit breaker energization information measuring device according to a second embodiment of the present invention.

FIG. 3 is a circuit configuration block diagram of a circuit breaker energization information measuring device according to a third embodiment of the present invention.

FIG. 4 is a side view of a circuit breaker energization information measuring device according to a fourth embodiment of the present invention.

FIG. 5 is a front view of a circuit breaker energization information measuring device according to a fourth embodiment of the present invention.

FIG. 6 is a side view of an energization information measuring device for a circuit breaker according to a fifth embodiment of the present invention.

FIG. 7 is a front view of a circuit breaker energization information measuring device according to a fifth embodiment of the present invention.

FIG. 8 is a circuit diagram around a connector of an energization information measuring device for a circuit breaker according to a sixth embodiment of the present invention.

FIG. 9 is a diagram showing another example of the sixth embodiment.

FIG. 10 is a circuit configuration block diagram of a circuit breaker energization information measuring device according to a seventh embodiment of the present invention.

FIG. 11 is a side view of the seventh embodiment.

FIG. 12 is a front view of the seventh embodiment.

FIG. 13 is a circuit configuration block diagram of an energization information measuring device for a circuit breaker according to an eighth embodiment of the present invention.

FIG. 14 is a side view of the eighth embodiment.

FIG. 15 is a front view of the eighth embodiment.

FIG. 16 is a diagram illustrating a transmission format example of measurement data reception / transmission according to the eighth embodiment.

FIG. 17 is a side view of a circuit breaker energization information measuring device according to a ninth embodiment of the present invention.

FIG. 18 is a diagram showing a block configuration of a trip detection circuit of a conventional electronic circuit breaker.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Circuit breaker main body, 2 Main conductor, 3 Switching contact 4 Current transformer, 5 Rectifier circuit, 12 Electromagnetic coil 18 Current transformer for measurement, 19 Transformer, 20 Current information measurement unit 21 Current A / D conversion circuit, 22 voltage A / D conversion circuit 23 current value output, 25 voltage output between phases, 2
6 Multiplication circuit 27 Integration circuit, 28 Display content selection means, 2
9 display unit 30 second current transformer, 31 current transformer, 31a
Tertiary winding 32 lead wire, 34, 35 voltage limiting circuit,
36 resistance element 40 measurement output unit, 41 current D / A conversion circuit 42 voltage D / A conversion circuit, 44 contact output circuit 50 transmission terminal unit, 51 connector 52 communication interface, 53 message analysis circuit 54 transmission data selection circuit, 55 Message generation circuit

Continuing from the front page (72) Inventor Shuko Kantaka 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Inventor Minoru Sakata 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric (72) Inventor Yuji Tsuchimoto 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation

Claims (13)

[Claims] 1. A current transformer which is housed inside a circuit breaker and detects current of each energized main conductor, a transformer which detects a voltage between the energized main conductors, and a current transformer which is detected by the current transformer and the transformer. Calculation processing means for calculating the current and the voltage, and converting at least the current value, the voltage value, the power value, and the power amount into a signal output capable of displaying the same, and a display unit for displaying each of the display signal outputs. Characteristic device for measuring current flow of circuit breakers. 2. The apparatus according to claim 1, further comprising display content selection means for selecting the content to be displayed on the display unit from the output of each display signal. 3. An electronic circuit breaker for detecting an overcurrent trip time by an output of a current transformer for detecting a current of each current-carrying main conductor, wherein a second current of the current transformer is changed to a primary current. 3. The apparatus according to claim 1, wherein an output of the flower is used as an arithmetic processing input. 4. A tertiary winding is provided in said current transformer of an electronic circuit breaker for detecting an overcurrent trip time by an output of a current transformer for detecting a current of each current-carrying main conductor. 3. An apparatus according to claim 1, wherein an output of the circuit breaker is used as an arithmetic processing input. 5. A circuit breaker and an arithmetic processing unit, a display unit, and a display content selection unit are integrally housed separately from each other, and are detachably connected to output terminals of a current transformer and a transformer in the circuit breaker. 5. The apparatus according to claim 1, wherein the connection information is connected by: 6. An apparatus according to claim 5, wherein the separate component is mounted on an operation surface of the circuit breaker. 7. An apparatus according to claim 5, wherein the separate component is mounted on a side surface of the circuit breaker. 8. A voltage limiting circuit, which conducts at a predetermined voltage or more, is connected between an output terminal of the current transformer between a current transformer for obtaining a processing input and a connector. A circuit breaker energization information measuring device according to any one of the above. 9. The circuit breaker according to claim 1, wherein a resistance element having substantially the same value is connected to the current-carrying main conductor at both sides of the primary input terminal of the transformer. Device for measuring the power supply information. 10. A contact output means for converting the electric energy calculated by the arithmetic processing means from the current and voltage detected by the current transformer and the transformer into a pulse proportional to the electric energy and separately outputting the pulse. The current-carrying information measuring device for a circuit breaker according to any one of claims 1 to 9, wherein: 11. An apparatus according to claim 1, further comprising analog output means for outputting a current value and a voltage value which are arithmetically processed by the arithmetic processing means from the current and the voltage detected by the current transformer and the transformer. A circuit breaker energization information measuring device according to any one of claims 10 to 13. 12. A measurement output unit accommodating the contact output means and / or the analog output means is separately formed, and is connected to a display unit including an arithmetic processing means by a connector to be attached to a circuit breaker. The energization information measuring device for a circuit breaker according to claim 10 or 11, wherein 13. A communication interface for transmitting / receiving a message to / from a host computer, and a message generating means for organizing a message responding to a request from the host computer from among the energized information of the circuit breaker which has been processed. 13. The transmission terminal unit according to claim 1, wherein said transmission terminal unit is connected to a display unit including said arithmetic processing means by a connector and attached to a circuit breaker.
A circuit breaker energization information measuring device according to any one of the above.