CN213093854U - Self-recovery overvoltage and undervoltage device with current fault indication function - Google Patents

Abstract

The utility model provides an undervoltage equipment is crossed from recovery with current fault instruction function, include: the device comprises a rectification module, a processing module, a dry contact module, a driving module, a motor and transmission component, a current fault detection component, a state indication module and a plastic shell of a device body; the processing module is electrically connected with the current fault detection component, the rectifying module, the dry contact module and the driving module; the state indicating module is connected to the driving module; the status indicator lamp is electrically connected to the driving circuit; the mechanical color card and the transmission handle are connected to the driving motor through the transmission part. Remote switching-on operation is carried out through the mode key; the zero line and the live line can be simultaneously switched on and off when the protection function is realized, and the power utilization safety can be ensured no matter whether the zero line and the live line of the incoming line of a user are reversely connected or not; by arranging the mechanical safety lock, the rear end is safer to overhaul and detect through the safety lock and the locking state when necessary.

Description

Self-recovery overvoltage and undervoltage device with current fault indication function

Technical Field

The utility model relates to an electricity safety technical field especially relates to an undervoltage equipment is crossed from recovery with current fault instruction function.

Background

Electric energy is a convenient energy source, and the wide application of the electric energy forms the second technical revolution in recent human history. The development of the human society is powerfully promoted, huge wealth is created for human beings, and the life of the human beings is improved. The electric energy brings great benefits to human beings, and the electricity safety also becomes one of the most concerned problems of people at present.

The voltage is too high, so that the electric appliance is easily burnt, and even a fire disaster is caused; the motor power is insufficient due to too low voltage, and a phenomenon called 'small horse drawing cart' is formed on the premise that the load is not changed, namely, the small power has high power, and the motor is easy to break down or even be burnt out after a long time. The first phenomenon: the wiring of the phase line and the neutral line is reversely connected, the indoor box cannot detect the condition that the phase line and the neutral line are reversely connected, when the electricity utilization is abnormal, the wiring of the inlet switch is acquiescent to be correct, only the line at the position of the phase line is broken, but the broken neutral line is actually formed, and the electric shock risk is easily caused; a second phenomenon: the wiring of the phase line and the neutral line is correct, but the phase line and the neutral line cannot be broken simultaneously, when danger occurs, the two-pole switch of the indoor box inlet line is changed into a single-pole switch, only the phase line is broken, the neutral line is still electrified, and serious potential safety hazards such as personal electric shock casualties, electric equipment damage and the like can be caused.

The problems that a user cannot know the recovery condition of the voltage in time, and the switch is not safely switched on by blind manual operation and the like exist in the phenomena. When no one is in the house, a long power outage will probably result in: safety system power failure, such as door access; refrigerators, air conditioners, and other appliances stop operating; the household life-support system, such as a fish tank, and the like stops running. When the voltage is normal, the miniature circuit breaker is opened, and people cannot distinguish active opening and current fault tripping.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention has been made in order to provide a self-healing overvoltage/undervoltage device that overcomes or at least partially solves the above-mentioned problems.

In order to solve the problem, the utility model discloses an undervoltage unit is crossed from compound, include: the device comprises a rectification module, a processing module, a dry contact module, a driving module, a motor and transmission component, a current fault detection component, a state indication module and a plastic shell of a device body;

the processing module is electrically connected with the current fault detection component, the rectifying module, the dry contact module and the driving module;

the output end of the rectification module is electrically connected with the power supply ends of the driving module, the dry contact module, the state indicating module and the processing module;

the driving module comprises a driving circuit, a driving motor, a transmission part and a transmission handle;

the state indicating module comprises a state indicating lamp and a mechanical color card;

the input end of the driving motor is electrically connected to a motor driving interface of the driving circuit;

the circuit breaker is provided with a state indication window matched with the current fault detection component;

the current fault detection component is connected with a state window of the circuit breaker in a splicing manner;

the status indicator lamp is electrically connected to the status lamp interface of the driving circuit;

the mechanical color card and the transmission handle are connected to the power output part of the driving motor through a transmission part.

Preferably, the transmission handle is matched and connected with a handle of an external circuit breaker;

the input interface and the output interface of the circuit breaker are used for connecting screws for fastening wires and are arranged in screw holes, and the diameter of the screw head is larger than that of the screw hole.

Preferably, the dry contact module comprises a decoding circuit, a dry contact interface and a control circuit;

the control circuit is electrically connected to the decoding circuit and the dry contact interface.

Preferably, the dry contact interface comprises a high pressure dry contact and a low pressure dry contact;

the high-voltage dry contact is arranged at the upper end of the device body;

the low-voltage dry contact is arranged at the lower end of the device body.

Preferably, the high voltage dry junction is provided in three;

the three dry contact points are a control contact point, a first state contact point and a second state contact point in sequence.

Preferably, the low voltage dry contact comprises six low level contacts;

the six low-level contacts are sequentially an RS485A, an RS485B, an RS-485GND shielding end, a common end COM (cluster communication port) and two residual current sampling contacts.

Preferably, the device body is provided with a cross-shaped groove, a power supply probe, a voltage state indicating window, a switching-on and switching-off indicating window, a current fault indicating window, a mode display window, a mode key and a safety lock;

the cross-shaped groove and the power supply probe are matched with a cross-shaped bulge and a power supply contact on an external voltage sampling device;

the switching-on and switching-off indicating window and the current fault indicating window are internally provided with mechanical color cards, wherein the switching-on and switching-off indicating color cards and the current fault indicating color cards are both provided with two colors for distinguishing states;

the voltage status indicating window and the mode display window are internally provided with light emitting diodes, wherein the three-color light emitting diode is used as a voltage status indicating lamp, and the two-color light emitting diode is used as a mode indicating lamp.

Preferably, the number of the power supply probes is four;

the power supply probe comprises a power supply needle head and a power supply needle seat;

the power supply needle head can be elastically and telescopically arranged in the power supply needle seat.

Preferably, the mode key is electrically connected with the control circuit;

the safety lock is mechanically connected to the transmission component.

The utility model discloses a following advantage: different set modes, such as a manual mode, an automatic mode and a control mode, are selected through a mode key; the manual mode is used for displaying the state only through a window and requiring a user to manually execute the opening and closing operation; the automatic mode can automatically switch on according to the state of the detection line after triggering the overvoltage and undervoltage protection function; the control mode is that after the overvoltage and undervoltage protection function is triggered, remote closing operation is carried out through the remote control function of the dry contact; the zero line and the live line can be simultaneously broken when the protection function is realized, and the power utilization safety can be ensured no matter whether the zero line and the live line of the incoming line of the user are reversely connected or not; by arranging the mechanical safety lock, the rear end is safer to overhaul and detect through the safety lock and the locking state when necessary, and the mistaken switching-on is not needed to be worried about.

Drawings

Fig. 1 is a block diagram of a self-resetting overvoltage/undervoltage device with current fault indication function according to the present invention;

fig. 2 is a schematic front view of the self-resetting overvoltage/undervoltage device matching circuit breaker with current fault indication function of the present invention;

fig. 3 is a schematic side view of a self-recovery overvoltage/undervoltage device with current fault indication function according to the present invention.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

One of the core ideas of the utility model is that different modes such as manual mode, automatic mode and control mode are selected through the mode key; the manual mode is used for displaying the state only through a window and requiring a user to manually execute the opening and closing operation; the automatic mode can automatically switch on according to the state of the detection line after triggering the overvoltage and undervoltage protection function; the control mode is that after the overvoltage and undervoltage protection function is triggered, remote closing operation is carried out through the remote control function of the dry contact; the zero line and the live line can be simultaneously broken when the protection function is realized, and the power utilization safety can be ensured no matter whether the zero line and the live line of the incoming line of the user are reversely connected or not; by arranging the mechanical safety lock, the rear end is safer to overhaul and detect through the safety lock and locking the state when necessary, and the error switching-on is not needed to be worried about; the on-off function is controlled by the linkage of the external terminal and other equipment.

Referring to fig. 1-3, the utility model discloses an undervoltage device is crossed from compound can specifically include: a rectifier module 12, a processing module 13, a dry contact module 14, a driving module 15, a motor and transmission component, a current fault detection component 11, a state indication module 16 and a plastic shell of the device body; the processing module 13 is electrically connected with the current fault detection component 11, the rectification module 12, the dry contact module 14 and the driving module 15;

the output end of the rectifying module 12 is electrically connected to the power supply ends of the driving module 15, the dry contact module 14, the state indicating module 16 and the processing module 13; the driving module 15 comprises a driving circuit, a driving motor, a transmission part and a transmission handle 30; the status indication module 16 comprises a status indicator light and a mechanical color card; the input end of the driving motor is electrically connected to a motor driving interface of the driving circuit; the circuit breaker is provided with a state indication window matched with the current fault detection component 11; the current fault detection component 11 is connected with a state window of the circuit breaker in a splicing manner; the status indicator lamp is electrically connected to the status lamp interface of the driver circuit.

The mechanical color card and the transmission handle are connected to a power output part of the driving motor through the transmission part, when over-voltage and under-voltage protection is triggered, the transmission part transmits the power of the driving motor to the transmission handle 30, the mechanical color card drives a breaker handle matched with the transmission handle 30 to perform switching-on or switching-off operation, and switches a position marked with another color by the mechanical color card to the display window, for example, when the switching-off operation is performed, green displayed in the switching-on and switching-off indication window 24 is switched to yellow, and when the switching-on operation is performed, yellow displayed in the switching-on and switching-off indication window 24 is switched to green.

The transmission handle 30 is connected with the handle of an external circuit breaker in a matching way; screws used for connecting and fastening wires of the input interface and the output interface of the circuit breaker are arranged in the screw holes, and the diameters of screw heads are larger than the diameters of the screw holes, so that the screws are prevented from falling out of the mounting holes during mounting; it is also possible to prevent an exposed conductor portion from being exposed to cause a potential safety hazard, and an accidental trip failure.

The dry contact module 14 comprises a decoding circuit, a dry contact 29 interface and a control circuit; the control circuit is electrically connected to the decoding circuit and the dry contact 29 interface, and when the remote control is performed, different address codes are set by the decoding circuit to perform control identification, for example, when three overvoltage and undervoltage protection devices need to be controlled to perform remote operation, the three addresses are respectively set to be 01, 02 and 03 to distinguish the three overvoltage and undervoltage protection devices.

The dry contact 29 interface comprises a high-voltage dry contact and a low-voltage dry contact; the high-voltage dry contact is arranged at the upper end of the device body 2; the low-voltage dry contact is arranged at the lower end of the device body 2. The three high-voltage dry contact points are used for strong electric signals, and L-220V is high level relative to an alternating current N (in the alternating current, L represents a live wire, and N represents a zero wire); the three main contacts are control contacts in sequence and are used for receiving high-level 1s switching-on and receiving low-level switching-off; the first state contact is used for continuously outputting a high level to be in a closing state (220ACV20mA) and continuously outputting a low level to be in an opening state; and a second state contact for continuously outputting a high level as a line fault state (220ACV20mA) and continuously outputting a low level as a line normal state. The low-voltage dry contact comprises six low-level contacts; the six low-level contacts are sequentially an RS485A shield end, an RS485B shield end, an RS-485GND shield end, a common end COM and two residual current sampling contacts, and the maximum output current of an auxiliary contact of the common end COM is not more than 200 mA/230V; RS485 communication and the dry contact control opening and closing action, and the self-recovery type overvoltage and undervoltage protection function is realized.

The standard RS485 communication interface can realize remote control and can carry out intelligent management such as switching-on and switching-off, operation condition inquiry and the like in a long distance. And a Modbus RTU protocol is adopted, so that a user can conveniently read and write the equipment parameters by adopting a Modbus instruction. The sending and returning values of the communication are 16-system numbers except for special labels.

The transmission handle 30 can realize the opening and closing of the circuit breaker by a physical method, and directly cut off the phase line and the neutral line, namely, the zero line and the fire line are simultaneously broken.

As shown in fig. 2-3, the driving handle 30 is connected with the handle of the external circuit breaker in a matching way; screws used for connecting and fastening wires of the input interface and the output interface of the circuit breaker are arranged in the screw holes, and the diameters of screw heads are larger than the diameters of the screw holes, so that the screws are prevented from falling out of the mounting holes during mounting; it is also possible to prevent the apparatus from having an exposed conductor portion, thereby causing a potential safety hazard, and an accidental trip failure.

A cross-shaped groove 21, a power supply probe 22, a voltage state indicating window 23, a switching-on/off indicating window 24, a current fault indicating window 25, a mode display window 26, a mode key 27 and a safety lock 28 are arranged on the device body 2; the cross-shaped groove 21 and the power supply probe 22 are matched with a cross-shaped bulge and a power supply contact on an external voltage sampling device; the switching-on and switching-off indication window 24 and the current fault indication window 25 are internally provided with mechanical color cards, wherein the switching-on and switching-off indication color cards and the current fault indication color cards are provided with two colors for distinguishing states, for example, when a current fault occurs, the current fault indication color cards indicate red, and when no current fault occurs, the current fault indication color cards indicate white;

the voltage status indication window 23 and the mode display window 26 are internally provided with Light Emitting Diodes (LEDs), wherein three-color LEDs are used as the voltage status indication lamps, and two-color LEDs are used as the mode indication lamps, for example: over-voltage and under-voltage indication, when green bright, for normal voltage indication, when red bright, for overvoltage or time delay indication, when orange bright, for under-voltage or time delay indication, when red light scintillation, for the overvoltage recovery indication, when orange light scintillation, for the under-voltage recovery indication.

In another embodiment, the power probes 22 are provided in four; the power supply probe 22 comprises a power supply needle head and a power supply needle seat; the power supply needle head can be elastically and telescopically arranged in the power supply needle seat. The mode key 27 is electrically connected with the control circuit; the safety lock 28 is mechanically connected to the transmission member and when the safety lock is pulled, it is ineffective to perform a forced physical switching-off, whether manual or automatic.

The device has three modes: a control mode, an automatic mode, a manual mode; the selection can be carried out through the mode key 27, after the pressing action of the mode key 27 is identified, the LED which responds continuously flickers, the LED stops flickering after long-time pressing for 4 seconds and is switched to a new color, and the mode switching is finished;

the mode has a memory function, and the original mode is saved after power-off restarting; the corresponding mode can be observed through a user indicator lamp, or the RS485 reading automatic mode is adopted, after the fault tripping, the load end is detected, and the 10-second automatic reclosing time is delayed according with the closing requirement; if the switching-on is unsuccessful, delaying 60 seconds for secondary reclosing; if the closing is still unsuccessful, the third reclosing is delayed for 300 seconds. And after the third switching-on failure, the mode state lamp (red) flickers to give an alarm. And then, local high-low level control and RS485 control are allowed to be superposed, if superposition failure is still accumulated for 3 times in 5 minutes, the functions of the local high-low level control and RS485 control are locked, and after 90 minutes or manual switching-on, all the functions are recovered to be normal. If the reclosing time is longer than 15 minutes, defining that the reclosing is successful; and after the successful closing, the reclosing times of the equipment are automatically reset, and the counter starts counting again.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

The self-resetting overvoltage and undervoltage device with the current fault indication function provided by the utility model is introduced in detail, and the principle and the implementation mode of the utility model are explained by applying specific examples, and the explanation of the above embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (9)

1. A self-healing overvoltage and undervoltage device with current fault indication function is characterized by comprising: the device comprises a rectification module, a processing module, a dry contact module, a driving module, a motor and transmission component, a current fault detection component, a state indication module and a plastic shell of a device body;

the processing module is electrically connected with the current fault detection component, the rectifying module, the dry contact module and the driving module;

the output end of the rectification module is electrically connected with the power supply ends of the driving module, the dry contact module, the state indicating module and the processing module;

the driving module comprises a driving circuit, a driving motor, a transmission part and a transmission handle;

the state indicating module comprises a state indicating lamp and a mechanical color card;

the input end of the driving motor is electrically connected to a motor driving interface of the driving circuit;

the circuit breaker is provided with a state indication window matched with the current fault detection component;

the current fault detection component is connected with a state window of the circuit breaker in a splicing manner;

the status indicator lamp is electrically connected to the status lamp interface of the driving circuit;

the mechanical color card and the transmission handle are connected to the power output part of the driving motor through a transmission part.

2. The self-healing overvoltage and undervoltage device according to claim 1, wherein the transmission handle is matched and connected with a handle of an external circuit breaker;

the input interface and the output interface of the circuit breaker are used for connecting screws for fastening wires and are arranged in screw holes, and the diameter of the screw head is larger than that of the screw hole.

3. The self-healing overvoltage and undervoltage device of claim 1, wherein the dry contact module comprises a decoding circuit, a dry contact interface, and a control circuit;

the control circuit is electrically connected to the decoding circuit and the dry contact interface.

4. The self-healing overvoltage and undervoltage device of claim 3, wherein the dry contact interface comprises a high voltage dry contact and a low voltage dry contact;

the high-voltage dry contact is arranged at the upper end of the device body;

the low-voltage dry contact is arranged at the lower end of the device body.

5. The self-healing overvoltage and undervoltage device according to claim 4, wherein the number of the high-voltage dry contacts is three;

the three dry contact points are a control contact point, a first state contact point and a second state contact point in sequence.

6. The self-healing overvoltage and undervoltage device of claim 4, wherein the low voltage dry contact comprises six low level contacts;

the six low-level contacts are sequentially an RS485A shielding end, an RS485B shielding end, an RS-485GND shielding end, a common end COM and two residual current sampling contacts.

7. The self-healing overvoltage and undervoltage device according to claim 1, wherein a cross-shaped groove, a power supply probe, a voltage state indicating window, a switching-on and switching-off indicating window, a current fault indicating window, a mode display window, a mode button and a safety lock are arranged on the device body;

the cross-shaped groove and the power supply probe are matched with a cross-shaped bulge and a power supply contact on an external voltage sampling device;

the switching-on and switching-off indicating window and the current fault indicating window are internally provided with mechanical color cards, wherein the switching-on and switching-off indicating color cards and the current fault indicating color cards are both provided with two colors for distinguishing states;

the voltage status indicating window and the mode display window are internally provided with light emitting diodes, wherein the three-color light emitting diode is used as a voltage status indicating lamp, and the two-color light emitting diode is used as a mode indicating lamp.

8. The self-healing overvoltage and undervoltage device according to claim 7, wherein the number of the power supply probes is four;

the power supply probe comprises a power supply needle head and a power supply needle seat;

the power supply needle head can be elastically and telescopically arranged in the power supply needle seat.

9. The self-healing overvoltage and undervoltage device according to claim 8, wherein the mode button is electrically connected to the control circuit;

the safety lock is mechanically connected to the transmission component.

Images