KR101414929B1 - Voltage indicator controller of switchboard - Google Patents

Abstract

A voltage indicator controller of a switchboard includes: an LED lamp; a voltage sensing function sensor to sense and transfer an AC input signal voltage of a capacitance distribution voltage lead distributed from an internal mother line of the switchboard; a printed circuit board (PCB) for an input circuit including a fuse for protecting a circuit cut when failure occurs, an AC-DC converter to convert an AC power voltage into a DC power voltage to transfer the DC power voltage, a filter to prevent a reverse voltage from being applied to the AC-DC converter, an ON/OFF DIP switch to pass or block the DC power voltage from the filter; an input signal amplifier to receive and amplify an input signal voltage, an IC bidirectional contact switch to block a circuit by switching when the failure occurs, a rectification circuit to block and transfer a high frequency band to block the circuit when the reverse voltage is generated or lightning occurs, and a voltage division unit power amplification IC to amplify the AC input signal voltage to a voltage within a predetermined stable range; and a PCB for an output circuit including a rectifier to rectify the AC input signal voltage to a DC input signal voltage, a surge protector to block a noise from a circuit, an SCR power switch to light an LED indicator lamp, an auxiliary relay to light the LED indicator lamp using the AC input signal voltage of the capacitance distribution voltage lead, and a battery to charge the DC power voltage.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a voltage-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a voltage sensing display control device, and more particularly, to a voltage sensing display control device in a switching and control panel that can monitor and control an image and a single phase of three-phase electric power in real time in the field.

If there is an image or a single phase on any one of the three-phase power in the switchboard, there will be a lot of disruption in power supply / distribution. Open Patent Publication No. 10-2009-0016158 discloses a technique for detecting such an image.

Conventionally, the image forming / single phase technique is operated by a commercial AC power source of AC 220V. However, there is a problem that image formation of three-phase power can not be detected when a power failure occurs. Furthermore, if the power is turned off for a long time, monitoring of the switchboard becomes impossible. Accordingly, it is necessary to continuously monitor the three-phase power of the transmission and distribution system even when an interruption occurs in the supply of commercial AC power, such as a failure of a power supply, a socket or a plug. Especially, in the case where the normal power supply such as the production line, the mart, etc. should be maintained without interruption, there is a great need for such a scheme.

On the other hand, conventionally, there is a technology for monitoring an image and a single phase, but there is a disadvantage in that it is not possible to remotely notify a user of the occurrence of a problem for each phase or visually notify the user. By detecting these R, S, T problems and informing the user, the coping and accident prevention can be made much quicker and more accurate.

On the other hand, since the input circuit of the voltage detection display control device receives a relatively high AC three-phase power, there is a great possibility that the circuit is erroneously or broken. The entire PCB (printed circuit board) is damaged, and thus, it is easily exposed to a failure.

10-2009-0016158

An object of the present invention is to provide a voltage detection display control apparatus for a switchboard.

The voltage-sense-and-display control device according to the present invention may further include: LED display lamps (L1, L2, L3) on each panel provided on a front panel; A voltage detector that senses and delivers an AC input signal voltage of a capacitance distribution voltage lead line of each phase derived from an inner bus line of the switchboard; An AC-DC converter for converting an AC power supply voltage received through the circuit protection fuse into a DC power supply voltage and transmitting the AC power supply voltage, A filter unit for receiving a DC power supply voltage from the AC-DC converter and preventing a reverse voltage from being applied to the AC-DC converter; an ON / OFF DIP An input signal voltage amplifying unit for receiving and amplifying an AC input signal voltage sensed by the voltage sensing function sensor, and an AC input voltage amplifying unit for amplifying the AC input voltage amplified by the input signal voltage amplifying unit, (IC) bidirectional contact switch 135 for transmitting a signal voltage and shutting off the circuit by switching when an error occurs, and an AC input signal from the IC bidirectional contact switch A rectifier circuit which receives a voltage and transmits a high frequency band in a cutoff manner and blocks a circuit when a reverse voltage or a lightning strike occurs; a voltage dividing unit power amplifying unit for maintaining the AC input signal voltage received from the rectifying circuit at a voltage within a predetermined stable range, A printed circuit board (PCB) for an input circuit including an IC; A rectifier device for converting an AC input signal voltage output from the voltage divider power amplifier IC into a DC input signal voltage by a bridge diode, a surge protection device for blocking noise of the circuit, A silicon control rectifier (SCR) power switch for lighting the LED display lamps (L1, L2, L3) of the respective phases by a contact operation using an input signal voltage, and an AC input signal voltage of the capacitive distribution voltage lead wire And an output circuit PCB including an auxiliary relay for turning on the LED display lamps of each of the phases and a battery for charging the DC power supply voltage passed in the ON / OFF DIP switch.

Here, the battery may be configured to supply a DC power supply voltage to the input circuit PCB and the output circuit PCB at the time of a power failure.

A battery indicator lamp provided on the front panel and indicating whether the battery 145 is charged; An auxiliary lamp provided on the front panel and indicating whether the commercial AC power is supplied; The auxiliary relay is operated in a state where the LED indicator lamps (L1, L2, L3) are turned off and the battery indicator lamps (L1, L2, L3) L1, L2, and L3 to light up a circuit failure or a three-phase power supply failure.

In addition, a potentiometer may be further provided on the front panel to increase or decrease a driving voltage of the LED indicator lamps L1, L2, and L3.

The voltage sensing display controller of the present invention is configured to display the voltage energization state of the inner busbar inside the switchgege on the front panel using the power of the voltage sensing function sensor so that the LED indicator lamp is lit It is possible to remotely inform the user without any trouble even if there is a problem in power supply such as a power failure.

In addition, a separate battery is provided in the voltage sensing display controller to charge the power source voltage of the commercial AC power source in advance. Even when the voltage sensing display controller fails to operate normally due to occurrence of a power failure or the like, By driving the circuit, it is possible to normally detect the image formation or the single phase or the like and to normally maintain the operation of the switchboard. Particularly, in the case of a power failure or a single phase, the alarm device or the trip breaker is stopped to protect and quickly check the bus line, thereby maintaining the stable supply of electric power.

On the other hand, an input circuit for inputting a three-phase power input signal or an input circuit for processing input of a commercial AC power and an output circuit for outputting it as an LED lamp are separately mounted on a printed circuit board (PCB) So that it is possible to obtain a sufficient dielectric strength. The input circuit processes the high AC voltage and the output circuit treats the low DC voltage.

In addition, if the LED indicator lamp is turned off, the LED indicator lamp can be forcibly turned on by driving the auxiliary relay using the AC three-phase power input by the voltage sensing function sensor of the switchboard by pressing the test button on the front panel Through these tests, it is possible to judge at once whether a problem has occurred several times or if a circuit in the voltage detection display control device is faulty.

As described above, according to the present invention, it is possible to stably monitor the imaging and the single-phase in various situations, protect the circuit, and promptly / accurately determine the problem, so that it is possible to cope with the stable power distribution of the power.

FIG. 1 is a block diagram of a voltage sense display control apparatus according to an embodiment of the present invention. Referring to FIG.
2 is a diagram illustrating an example of a front panel of a voltage-sense-indicating control device according to an embodiment of the present invention.
3 is an exemplary view of a wiring terminal panel according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail to the concrete inventive concept.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a voltage sense display control apparatus according to an embodiment of the present invention. Referring to FIG.

Referring to FIG. 1, a voltage indicator controller (VIC) 100 of a switchboard according to an embodiment of the present invention includes LED indicator lamps (L1, L2, L3) 110, a voltage detector (VD) 120, a printed circuit board (PCB) 130 for an input circuit, and a PCB 140 for an output circuit.

In addition to the LED display lamps (L1, L2, L3) 110, a battery indicator lamp 111, an Aux lamp 112, a test button 113 ) Potentiometer 114 as shown in FIG.

The input circuit PCB 130 includes a circuit protection fuse 131, an AC-DC converter 132, a filter 133, an ON / OFF DIP switch 134, an input signal voltage amplifier 135, , An integrated circuit (IC) bi-directional contact switch 136, a rectification circuit 137, and a voltage divider power amplification IC 138.

The output PCB 140 includes a rectifier 141, a surge protector 142, a silicon control rectifier (SCR) power switch 143, an auxiliary relay 144, a battery 145, . ≪ / RTI >

The voltage detection display controller 100 senses an image or phase of each phase R, S, T of the three-phase power on the bus line of the power transmission and distribution system and displays them individually through the LED display lamps (L1, L2, L3) . By displaying each phase, it is possible to quickly detect the problem of the circuit in the switchboard and prevent an accident in advance.

A battery 145 may be further provided to stably sustain the image formation or the single phase even if there is a problem in the supply of the AC power or the commercial AC power to drive the input circuit PCB 130 and the output circuit PCB 140 have.

Further, the LED indicator lamps (L1, L2, L3) 110 are turned on by using the three-phase power supplied from the voltage sensing function sensor 120 that senses the busbar voltage of the busbar So that it is possible to prevent the remote monitoring of the user from being disturbed.

Further, when the LED display lamps (L1, L2, L3) 110 are turned off, it is impossible to know whether there is a problem with the power of the power distribution panel or a circuit failure of the voltage detection display controller 100 itself, Button 114 to force the auxiliary relay 144 to forcibly turn on the LED indicator lamps L1, L2, and L3. At this time, if the lamp is not turned on, it is a problem of electric power supply in the switchboard, and if it is turned on, the problem of circuit failure of the voltage detection display controller 100 itself can be grasped. This makes it possible to detect and respond quickly and accurately.

On the other hand, the input circuit PCB 130 and the output circuit PCB 140 are separated into separate PCBs, and the input circuit PCB 130 is provided with a commercial AC power supply for handling a relatively high voltage AC and an AC three- And the output circuit PCB 140 is provided with a circuit for handling a relatively low voltage DC that handles the LED indicator lamps (L1, L2, L3) 110, so that the two circuits are physically completely isolated . Therefore, it is possible to reduce replacement and repair costs due to a failure of the circuit, and to stably maintain the operation of the circuit.

Hereinafter, the detailed configuration will be described.

The LED display lamps (L1, L2, L3) 110 are provided on the front panel of the voltage sensing display controller 100. The LED display lamps L1, L2 and L3 110 are turned on / off for three phases R, S, And may be configured to be turned off.

The voltage sensing function sensor 120 may be configured to sense the AC input signal voltage of the capacitance distribution voltage lead of each phase derived from the inner bus line of the switchboard and deliver it to the input signal voltage amplifying device 135. The capacitive distributed voltage lead is a configuration for lowering the voltage according to the law of voltage distribution.

The circuit-protecting fuse 131 may be configured to receive an AC power supply voltage from a commercial AC power source and deliver it to the AC-DC inverter 132.

The circuit-protecting fuse 131 may be configured to protect the circuit by fusing when an abnormality occurs, such as a voltage surge at an ideal high voltage.

The AC-DC converter 132 may be configured to convert the AC power supply voltage received through the circuit protection fuse 131 to a DC power supply voltage and deliver the DC power supply voltage to the filter unit 133.

The filter unit 133 may be configured to receive the DC power supply voltage from the AC-DC inverter 132. [

The filter unit 133 is configured to prevent a reverse voltage from being applied from the battery 145, and may be configured as an RC passive filter.

The ON / OFF DIP switch 134 may be configured to pass or block the DC power supply voltage of the filter unit 133. [

Meanwhile, the input signal voltage amplifying device 135 may be configured to receive and amplify the AC input signal voltage sensed by the voltage sensing function sensor 110. The amplified AC input signal voltage is delivered to IC bidirectional contact switch 136.

The IC bidirectional contact switch 136 may be configured to transmit the AC input signal voltage amplified by the input signal voltage amplifying device 135 to the rectifying circuit 137 and to switch off the circuit by switching when an abnormality occurs.

The rectifier circuit 137 may be configured to receive the AC input signal voltage from the IC bidirectional contact switch 136 and to cut off the high frequency band and deliver it to the voltage division power amplifying IC 138. When a reverse voltage or a lightning stroke occurs, . ≪ / RTI >

The voltage divider power amplifying IC 138 may be configured to maintain the AC input signal voltage received from the rectifying circuit 137 at a voltage within a predetermined stable range and output the same. The AC input signal voltage is output to the rectifier 141 of the PCB 140 for the output circuit.

The rectifier 141 may be configured to convert the AC input signal voltage output from the voltage divider power amplification IC 138 into a DC input signal voltage by the bridge diode and deliver it to the surge protection device 142. [

Surge protection device 142 may be configured to receive the DC input signal voltage and to block noise in the circuit.

The SCR power switch 143 may be configured to turn on the LED display lamps (L1, L2, L3) 110 of each phase by the contact operation using the DC input signal voltage.

The auxiliary relay 144 can be configured to light up the LED indicator lamps (L1, L2, L3) 110 of each phase using the AC input signal voltage of the capacitance distribution voltage lead of each phase. The LED indicator lamps (L1, L2, L3) 110 are turned on without passing through other circuits, so that it can be used to judge whether there is a circuit problem or a three phase power problem.

The battery 145 may be configured to charge the DC power supply voltage passed at the ON / OFF DIP switch 134.

The battery 145 may be configured to supply a DC supply voltage to the PCB 130 for the input circuit and the PCB 140 for the output circuit in the case of a power failure.

On the other hand, the battery indicator lamp 111 is provided on the front panel and can be configured to indicate whether the battery 145 is charged or not.

The Aux lamp 112 is provided on the front panel and can be configured to indicate whether or not the commercial AC power is supplied.

It is possible to check whether the normal supply of the commercial AC power is normally supplied and whether the battery 145 is operating normally through the battery indicator lamp 111 and the Aux lamp 112.

A test button 113 is provided on the front panel and is used when the LED indicator lamps L1, L2 and L3 are turned off and the battery indicator lamp 111 or the Aux lamp 112 is lit . In other words, it is used when there is no problem in power supply and when it is detected that there is an image or a single phase.

Generally, the test button 113 is pressed once more to confirm the trouble of the voltage detection display control apparatus 100, though it may be an image or phase of three-phase power. In the case of the problem of the voltage-sense display control device 100, it is misunderstood as an image / single-phase, and unnecessary coping or delay of time may occur.

When the test button 113 is pressed, the auxiliary relay 144 is operated so that the LED indicator lamps (L1, L2, L3) 110 are turned on by using the AC three-phase power of the voltage sensing function sensor 120 do.

When the LED indicator lamps (L1, L2, L3) 110 are turned on, there is no problem in the three-phase power, so it may be an internal problem of the voltage sensing function sensor 120 and the LED indicator lamps L1, L2, 110 are not lit, it may be an image or a single image.

The potentiometer 114 is provided on the front panel and can be configured to increase or decrease the motor voltage of the LED indicator lamps (L1, L2, L3) 110

FIG. 2 is an exemplary view of a front panel of a voltage sensing display control apparatus according to an embodiment of the present invention, and FIG. 3 is an exemplary view of a wiring terminal panel according to an embodiment of the present invention.

2 and 3, the front panel includes LED indicators L1, L2 and L3 110, a battery indicator lamp 111, an Aux lamp 112 and a test button 113, a potentiometer 114 .

The potentiometer 114 may be configured to be adjustable with a '-' driver and configured to raise or lower the motor voltage using a resistor.

The input / output terminal numbers shown in Fig. 1 are shown in the rear terminal panel.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims. There will be.

110: LED indicator lamp (L1, L2, L3) 111: Battery indicator lamp
112: Aux lamp 113: Test button
114: Potentiometer 120: Voltage sensing function sensor
130: Input circuit PCB 131: Circuit protection fuse
132: AC-DC converter 133: filter unit
134: ON / OFF DIP switch 135: Input signal voltage amplifying device
136: IC bidirectional contact switch 137: rectifier circuit
138: Voltage divider power amplification IC 140: PCB for output circuit
141: Rectifier 142: Surge protection device
143: SCR power switch 144: Auxiliary relay
145: Battery

Claims (4)

A voltage detection display control device for a switchboard,
LED display lamps (L1, L2, L3) 110 of each phase provided on a front panel;
A voltage detector 120 for sensing and transmitting an AC input signal voltage of a capacitance distribution voltage lead line of each phase derived from an internal bus line of the switchboard;
A circuit protection fuse 131 for receiving and transmitting an AC power supply voltage from a commercial AC power source and firing when an abnormality occurs and an AC power supply voltage transmitted through the circuit protection fuse 131 to a DC power supply voltage for transmission A filter unit 133 for receiving a DC power supply voltage from the AC-DC inverter 132 and preventing reverse voltage from being applied to the AC-DC inverter 132, An ON / OFF dual-in-line package switch 134 for passing or blocking the DC power supply voltage of the filter unit 133, An input signal voltage amplifying unit 135 for receiving and amplifying the AC input signal voltage from the input signal voltage amplifying unit 135 and an AC input signal voltage amplifying unit 135 for converting the AC input signal voltage to an IC an integrated circuit bidirectional contact switch 136, A rectifying circuit 137 for receiving the AC input signal voltage from the IC bidirectional contact switch 136 to cut off the high frequency band and shutting off the circuit upon generation of a reverse voltage or a lightning stroke, A printed circuit board (PCB) 130 for an input circuit including a voltage dividing section power amplifying IC 138 for holding and outputting a voltage within a predetermined stable range;
A rectifier 141 for converting the AC input signal voltage output from the voltage divider power amplifying IC 138 into a DC input signal voltage by a bridge diode, a surge for blocking the noise of the circuit, A silicon control rectifier (SCR) power switch 143 for lighting the LED display lamps (L1, L2, L3) 110 of each phase by contact operation using the DC input signal voltage, An auxiliary relay 144 for turning on the LED display lamp 110 of each phase using the AC input signal voltage of the capacitance distribution voltage lead of each of the phases, And a battery (145) for charging the DC power supply voltage to the DC power supply voltage.
The battery pack according to claim 1, wherein the battery (145)
Is configured to supply a DC power supply voltage to the input circuit PCB (130) and the output circuit PCB (140) when a power failure occurs.
The method according to claim 1,
A battery indicator lamp 111 provided on the front panel and indicating whether the battery 145 is charged;
An Aux lamp 112 provided on the front panel and indicating whether the commercial AC power is supplied;
When the LED indicator lamps (L1, L2, L3) 110 are turned off and the battery indicator lamps (L1, L2, L3) 110 or the Aux lamps 112 are turned on, Further comprising a test button (113) for operating the relay (144) to illuminate the LED indicator lamps (L1, L2, L3) (110) to detect a circuit failure or a three- Voltage detection indication control device.
The method according to claim 1,
Further comprising a potentiometer (114) provided on the front panel and configured to increase or decrease a driving voltage of the LED indicator lamps (L1, L2, L3) (110) Control device.

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