CN201918322U - Relay - Google Patents
Relay Download PDFInfo
- Publication number
- CN201918322U CN201918322U CN201020658342XU CN201020658342U CN201918322U CN 201918322 U CN201918322 U CN 201918322U CN 201020658342X U CN201020658342X U CN 201020658342XU CN 201020658342 U CN201020658342 U CN 201020658342U CN 201918322 U CN201918322 U CN 201918322U
- Authority
- CN
- China
- Prior art keywords
- threshold value
- fault
- relay
- module
- detecting unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
A relay comprises a shell, a coil, an iron core, a movable block and an armature, wherein the coil is positioned in the shell, and the iron core is arranged in the coil; the movable block is arranged in the shell, and the armature is connected with the movable block; and a movable contact is arranged on the armature. The relay is further provided with a fixed contact, and the movable contact and the fixed contact are mutually attracted and separated to control the on/off of a circuit. The relay is characterized in that the relay is further provided with an indicating unit and a power supply, wherein the indicating unit is provided with an indicator lamp for indicating failure types of the circuit; and the power supply is used for supplying power for the indicating unit, a control unit and a detecting unit. In the utility model, as the relay is provided with an indicator lamp module connected with a control circuit, and the indicator lamp is arranged on the indicator lamp module, the indicator lamp is in different states corresponding to different failures in case of failures, accordingly, maintenance personnel can visually judge the type of the circuit error, saving the time required for detecting the circuit.
Description
Technical field
The utility model relates to control and the protection field for distribution technique, is specifically related to a kind of multifunctional household relay.
Background technology
Relay is the device that a kind of effect of utilizing electric current is come closure or open circuit; when faults such as circuit transships, opens circuit, short circuit, electric leakage; relay can the open failure circuit; the accident that prevents enlarges; modern society; because resident's household appliances increase day by day, power consumption is increasing, so relay is widely used in the control and the protection of resident's household electricity.
In the prior art, a kind of relay is disclosed among the Chinese patent literature CN201638760U, described relay comprises pedestal, yoke and coil, described yoke is fixed on the pedestal, described coil stationary is on yoke, described coil is sheathed with the insulating case of a tubular outward, described relay is when work, the function of current produces electromagnetic induction in relay coil, thereby drive armature under the effect of electromagnetic field towards coil movement, and then the moving contact on the drive armature with often open (normally closed) fixed contact adhesive (separation), otherwise when the current vanishes of input circuit, armature resets, moving contact with often open (normally closed) fixed contact and separate (adhesive), thereby realize disconnecting or the function of closed circuit.
But the shortcoming that above-mentioned prior art exists is, after fault took place, relay disconnected protected circuit, is which kind of fault but the maintenance personal can't judge immediately that circuit takes place, also needs by detecting and getting rid of and could determine.
In addition, because said apparatus can't be reported to the police, can not notify resident on every side after fault takes place, fault can not get overhauling timely, especially when electric shock accidents takes place, also might cause the electric shock personnel to can not get rescuing timely.
The utility model content
First technical problem to be solved in the utility model is relay of the prior art disconnects protected circuit when fault takes place after, and which kind of fault what the maintenance personal can't judge the circuit generation immediately is; And then provide a kind of relay that has deixis of intuitively circuit fault.
Second technical problem to be solved in the utility model is that relay of the prior art can't be reported to the police, resident around after fault takes place, can not in time notifying, thereby the fault that causes can not get timely maintenance, and the electric shock personnel can not get the problem of rescue in time; And then provide a kind of relay that can after breaking down, carry out instant alarming.
For this reason, the utility model provides a kind of relay, comprising:
Housing;
The iron core that is positioned at the coil of described housing and is arranged on described coil;
Be arranged on motion block in the housing and the armature that is connected with described motion block, described armature is provided with moving contact, and described relay also is provided with fixed contact, by the adhesive of described moving contact and fixed contact and the control of disconnection realization circuit on-off;
Described relay is provided with detecting unit, and described detecting unit is used for the fault of detection line;
Be connected with control unit with described detecting unit and described coil, when fault took place, described control unit sent current signal to described coil, disconnected described moving contact and fixed contact;
Be connected with indicating member with described detecting unit, described indicating member is indicated the kind of described line failure;
Also be provided with power supply, to described indicating member, control unit and detecting unit power supply.
Described fault is overvoltage, under voltage, current overload, short circuit, leak current fault.
Described detecting unit comprises:
Measurement module, described measurement module comprises residual current transformer, resistance step-down and current transformer;
The comparison module that is connected with control unit with described measurement module respectively, and the threshold value memory module that is connected with described comparison module, described threshold value memory module stores the overvoltage threshold value, the under voltage threshold value, the current overload threshold value, the short circuit threshold value, the residual current threshold value, described comparison module receives the measured value that described measurement module transmits and the respective threshold of calling threshold value memory module storage inside compares, judge whether circuit overvoltage takes place, under voltage, current overload, short circuit, leak current fault, when fault took place, described comparison module sent a signal to described indicating member and control unit.
Described measurement module also is provided with CO gas sensor, described threshold value cell stores has the carbonomonoxide concentration threshold value, the result that described comparison module is compared according to the numerical value and the carbonomonoxide concentration threshold value of described carbon monoxide transducer transmission detects the carbon monoxide fault that exceeds standard.
Described measurement module also is provided with the temperature sensor that is used for measures ambient temperature, described threshold value cell stores has temperature threshold, the result that described comparison module is compared according to the numerical value and the described temperature threshold of described temperature sensor transmission, the detected temperatures fault that exceeds standard.
In described detecting unit, also be provided with timing module, described detecting unit detects the duration of the concentration value of carbon monoxide greater than described carbonomonoxide concentration threshold value, when perhaps ambient temperature reached at least 30 seconds greater than duration of described temperature threshold, described detecting unit was judged and carbon monoxide exceed standard fault or temperature exceeding standard fault are occurred.
Described measurement module also is provided with the supply voltage measuring appliance, described threshold value cell stores has the supply voltage threshold value, the result that described comparison module is compared according to the numerical value and the described supply voltage threshold value of the transmission of described supply voltage measuring appliance, detect whether power shortage of power supply, when power was not enough, described comparison module sent a signal to described indicating module and indicates.
Described indicating member is an indicator light.
Described indicator light is one, and have can represent respectively that overvoltage, under voltage, current overload, short circuit, electric leakage, carbon monoxide exceed standard, the indicator light colors of temperature exceeding standard, power shortage fault.
Described indicator light is a plurality of, comprises overvoltage malfunction indicator lamp, under voltage malfunction indicator lamp, current overload malfunction indicator lamp, short trouble indicator light, leak current fault indicator light, carbon monoxide exceed standard malfunction indicator lamp, temperature exceeding standard malfunction indicator lamp, power shortage malfunction indicator lamp.
Also be provided with the alarm module that is connected with described control unit, when fault took place, the described alarm modules signal that gives the alarm carried out alarm.
The advantage of relay described in the utility model is:
(1) relay described in the utility model, be provided with the indicating lamp module that is connected with described control circuit, described indicating lamp module is provided with indicator light, when fault takes place, described indicator light presents different conditions corresponding to different faults, the maintenance personal can judge circuit very intuitively which kind of fault has taken place actually like this, has saved the time that circuit is detected.
(2) relay described in the utility model also is provided with the alarm modules that is connected with described control module, and when fault took place, described alarm modules can sound the alarm and carry out alarm.Like this, after fault took place, the personnel that obtain alarm signal can in time overhaul circuit or the electric shock personnel be rescued.
(3) relay described in the utility model, also be provided with CO gas sensor, described CO gas sensor is connected with described control system, described control system can detect the carbon monoxide fault that exceeds standard according to the numerical value of described carbon monoxide transducer transmission, and whether the relay described in the utility model also can leak indoor coal gas in the testing circuit fault and detect like this.
In addition, relay described in the utility model also is provided with the temperature sensor that is connected with described control system, and described temperature sensor can be measured room temperature, gives the alarm when room temperature is too high, has played the fireproof effect.
In order to make content of the present utility model be convenient to more understand, relay described in the utility model is done more detailed description below in conjunction with the drawings and specific embodiments.
Description of drawings
Shown in Figure 1 is the cut-away view of relay described in the utility model;
Fig. 2 is described to be the system diagram of relay detecting unit described in the utility model, control unit, indicating member;
Shown in Figure 3 is the system diagram that is provided with alarm module and timing module described in the utility model;
Wherein Reference numeral is:
The 1-pedestal; The 2-motion block; The 3-moving contact; The 4-yoke; The 5-indicator light; The 6-coil; The 7-fixed contact.
Embodiment
The internal structure of the relay described in the present embodiment comprises as shown in Figure 1: the housing (not shown); Be positioned at the coil 6 of described housing and the iron core that is arranged on described coil; Coil described in the present embodiment is arranged on the pedestal 1; Also comprise motion block 2 that is arranged in the housing and the armature that is connected with described motion block, described armature is provided with moving contact 3, described relay also is provided with fixed contact 7, by the adhesive of described moving contact 3 and fixed contact 7 and the control of disconnection realization circuit on-off, in order to strengthen the suction-combining force of solenoid, improve the efficient of electromagnet, present embodiment has also increased a selectable unit (SU) yoke 4.
Described relay also is provided with detecting unit, and described detecting unit is used for detection line and whether has overvoltage, under voltage, current overload, short circuit, leak current fault; Detecting unit in the present embodiment comprises residual current transformer, resistance step-down and current transformer, described detecting unit also comprises respectively the comparison module that is connected with control unit with described measurement module, and the threshold value memory module that is connected with described comparison module, described comparison module receives the measured value that described measurement module transmits and the threshold value of calling threshold value memory module storage inside compares, judge whether circuit overvoltage takes place, under voltage, current overload, short circuit, leak current fault, when fault took place, described comparison module sent a signal to described indicating member and control unit;
Wherein, described residual current transformer is used to check the residual current of described circuit and the result is passed to described comparison module, and the residual current threshold value that described comparison module calls its storage inside compares, and judges whether circuit leak current fault takes place; Described resistance drop is used to check line voltage distribution and the result is passed to described comparison module, and overvoltage threshold value and under voltage threshold value that described comparison module calls its storage inside compare, and judges whether circuit overvoltage, under voltage fault take place; Described current transformer is used to check line current and the result is passed to described comparison module, and current overload threshold value and cutout threshold that described comparison module calls its storage inside compare, and judges whether circuit current overload, short trouble take place;
Overvoltage threshold value described in the utility model, under voltage threshold value, current overload threshold value, short circuit threshold value, residual current threshold value can be set according to actual conditions, as selectable execution mode, it is 1.22Ue (rated voltage) that present embodiment is selected described overvoltage threshold value is set, the under voltage threshold value is 0.7Ue, current overload threshold value 1.45In (rated current), the short circuit threshold value is 5In, residual current threshold value 18mA.
Be connected with CPU as control unit with described detecting unit, when fault took place, described control unit sent current signal to described coil, disconnected described moving contact and fixed contact;
Be connected with indicating member with described detecting unit, described indicating member is provided with and is used for indicator light 5 that the kind of line failure is indicated, indicator light described in the present embodiment is provided with 3, each indicator light has two kinds of indicating status, described indicator light is a red luminotron, and the system of the detecting unit of relay described in the present embodiment, control unit, indicating member as shown in Figure 2.
The course of work of the relay described in the present embodiment is:
(1) uses described residual current transformer, resistance step-down and current transformer that residual current, voltage, the current value of circuit are tested and the result is passed to described comparison module;
(2) described comparison module calls described overvoltage threshold value, under voltage threshold value, current overload threshold value, short circuit threshold value, residual current threshold value and practice examining value from described threshold value memory cell and compares, and judges whether circuit overvoltage, under voltage, current overload, short circuit, leak current fault take place;
(3) when fault takes place, described comparison module sends a signal to described control module, and described control module sends electric current to described coil, disconnects the moving contact and the fixed contact of described relay, and open-circuit line is protected, and prevents that fault is excessive; Simultaneously, described comparison module transmission command adapted thereto to the described indicating module of described indicating module is indicated respectively according to the difference of failure mode.
The operating state of described indicating member is:
(1) overvoltage fault: line voltage distribution is during greater than 1.22Ue, and indicator light 1 is bright;
(2) under voltage fault: line voltage distribution is during less than 0.7Ue, and indicator light 1 is glittering;
(3) current overload fault: line current is greater than 1.45In and smaller or equal to 5In, and indicator light 2 is bright;
(4) short circuit: line current is during greater than 5In, and indicator light 2 is glittering;
(5) leak current fault: residual current is during greater than 18mA, and indicator light 3 is bright.
Compare with embodiment 1, relay described in the present embodiment also is provided with the alarm module that is connected with described control unit, as shown in Figure 3, and when fault takes place, the described alarm modules signal that can give the alarm carries out alarm, and institute's alarm module is a buzzer in the present embodiment.
Described measurement module is provided with CO gas sensor, described threshold value cell stores has the carbonomonoxide concentration threshold value, described comparison module can detect the carbon monoxide fault that exceeds standard according to the numerical value of described carbon monoxide transducer transmission, and the carbonomonoxide concentration threshold value is 25mg/m
3
Described measurement module is provided with temperature sensor, and described threshold value cell stores has temperature threshold, and described comparison module can detect the temperature exceeding standard fault according to the numerical value of described temperature sensor transmission, and temperature threshold is 50 ℃ in the present embodiment.
As shown in Figure 3, in described detecting unit, also be provided with timing module, described detecting unit detects the duration of the concentration value of carbon monoxide greater than described carbonomonoxide concentration threshold value, when perhaps ambient temperature reached at least 30 seconds greater than duration of described temperature threshold, described detecting unit was judged and carbon monoxide exceed standard fault or temperature exceeding standard fault are occurred.
Described measurement module also is provided with the supply voltage measuring appliance, described threshold value cell stores has the supply voltage threshold value, described comparison module can detect whether power shortage of power supply according to the numerical value of described supply voltage measuring appliance transmission, when power is not enough, described comparison module sends a signal to described indicating module and indicates, indicator light described in the present embodiment is provided with 4, and each indicator light has two kinds of indicating status, and described indicator light is a red luminotron.
The course of work of the relay described in the present embodiment is:
(1) use described residual current transformer, resistance step-down, current transformer, CO gas sensor, temperature sensor to residual current, voltage, current value and the ambient temperature of circuit with carbonomonoxide concentration is tested and the result is passed to described comparison module;
(2) described comparison module calls described overvoltage threshold value, under voltage threshold value, current overload threshold value, short circuit threshold value, residual current threshold value, temperature threshold, carbonomonoxide concentration threshold value and practice examining value from described threshold value memory cell and compares, and judges whether circuit overvoltage, under voltage, current overload, short circuit, leak current fault takes place and whether have temperature exceeding standard fault and the carbonomonoxide concentration fault that exceeds standard;
(3) when fault takes place, described comparison module sends a signal to described control module, and described control module sends electric current to described coil, disconnects the moving contact and the fixed contact of described relay, and open-circuit line is protected, and prevents that fault is excessive; Simultaneously, described comparison module transmission command adapted thereto to the described indicating module of described indicating module is indicated respectively according to the difference of failure mode.
The operating state of the indicating member described in the present embodiment is:
(1) overvoltage fault, voltage are during greater than 1.22Ue, and indicator light 1 is bright;
(2) under voltage fault, voltage are during less than 0.7Ue, and indicator light 1 is glittering;
(3) current overload fault, electric current be greater than 1.45In and smaller or equal to 5In, and during lasting 5s, indicator light 2 is bright;
(4) short circuit, electric current are during greater than 5In, and indicator light 2 is glittering;
(5) leak current fault, residual current are greater than 18mA, and indicator light 3 is bright.
(6) after temperature overheating fault, temperature were greater than or equal to 50 ℃ of also lasting 30s, indicator light 3 was glittering;
(7) the carbon monoxide fault that exceeds standard, carbonomonoxide concentration is greater than 25mg/m
3And behind the lasting 30s, indicator light 4 is glittering;
(8) power supply indication: when power was not enough, indicator light 4 was bright.
As selectable execution mode, the kind of the detection failure described in the present embodiment also can specifically be set according to actual needs, also need set corresponding measurement module and threshold value simultaneously.
As selectable execution mode, described indicator light also can be set to one equally, and have can represent respectively that overvoltage, under voltage, current overload, short circuit, electric leakage, carbon monoxide exceed standard, the indicator light colors of temperature exceeding standard, power shortage fault.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And conspicuous variation of being extended out thus or change still are among the protection range of the utility model creation.
Claims (11)
1. relay comprises:
Housing;
The iron core that is positioned at the coil of described housing and is arranged on described coil;
Be arranged on motion block in the housing and the armature that is connected with described motion block, described armature is provided with moving contact, and described relay also is provided with fixed contact, by the adhesive of described moving contact and fixed contact and the control of disconnection realization circuit on-off;
It is characterized in that described relay is provided with detecting unit, described detecting unit is used for the fault of detection line;
Be connected with control unit with described detecting unit and described coil, when fault took place, described control unit sent current signal to described coil, disconnected described moving contact and fixed contact;
Be connected with indicating member with described detecting unit, described indicating member is indicated the kind of described line failure;
Also be provided with power supply, to described indicating member, control unit and detecting unit power supply.
2. relay according to claim 1 is characterized in that, described fault is overvoltage, under voltage, current overload, short circuit, leak current fault.
3. relay according to claim 2 is characterized in that, described detecting unit comprises:
Measurement module, described measurement module comprises residual current transformer, resistance step-down and current transformer;
The comparison module that is connected with control unit with described measurement module respectively, and the threshold value memory module that is connected with described comparison module, described threshold value memory module stores the overvoltage threshold value, the under voltage threshold value, the current overload threshold value, the short circuit threshold value, the residual current threshold value, described comparison module receives the measured value that described measurement module transmits and the respective threshold of calling threshold value memory module storage inside compares, judge whether circuit overvoltage takes place, under voltage, current overload, short circuit, leak current fault, when fault took place, described comparison module sent a signal to described indicating member and control unit.
4. relay according to claim 3, it is characterized in that, described measurement module also is provided with CO gas sensor, described threshold value cell stores has the carbonomonoxide concentration threshold value, the result that described comparison module is compared according to the numerical value and the carbonomonoxide concentration threshold value of described carbon monoxide transducer transmission detects the carbon monoxide fault that exceeds standard.
5. relay according to claim 3, it is characterized in that, described measurement module also is provided with the temperature sensor that is used for measures ambient temperature, described threshold value cell stores has temperature threshold, the result that described comparison module is compared according to the numerical value and the described temperature threshold of described temperature sensor transmission, the detected temperatures fault that exceeds standard.
6. according to claim 4 or 5 described relays, it is characterized in that, in described detecting unit, also be provided with timing module, described detecting unit detects the duration of the concentration value of carbon monoxide greater than described carbonomonoxide concentration threshold value, when perhaps ambient temperature reached at least 30 seconds greater than duration of described temperature threshold, described detecting unit was judged and carbon monoxide exceed standard fault or temperature exceeding standard fault are occurred.
7. according to claim 4 or 5 described relays, it is characterized in that, described measurement module also is provided with the supply voltage measuring appliance, described threshold value cell stores has the supply voltage threshold value, the result that described comparison module is compared according to the numerical value and the described supply voltage threshold value of the transmission of described supply voltage measuring appliance, detect whether power shortage of power supply, when power was not enough, described comparison module sent a signal to described indicating module and indicates.
8. according to claim 1 or 2 or 3 described relays, it is characterized in that described indicating member is an indicator light.
9. relay according to claim 7, it is characterized in that, described indicator light is one, and have can represent respectively that overvoltage, under voltage, current overload, short circuit, electric leakage, carbon monoxide exceed standard, the indicator light colors of temperature exceeding standard, power shortage fault.
10. relay according to claim 7, it is characterized in that, described indicator light is a plurality of, comprises overvoltage malfunction indicator lamp, under voltage malfunction indicator lamp, current overload malfunction indicator lamp, short trouble indicator light, leak current fault indicator light, carbon monoxide exceed standard malfunction indicator lamp, temperature exceeding standard malfunction indicator lamp, power shortage malfunction indicator lamp.
11., it is characterized in that according to claim 1 or 2 or 3 or 9 or 10 described relays, also be provided with the alarm module that is connected with described control unit, when fault took place, the described alarm modules signal that gives the alarm carried out alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020658342XU CN201918322U (en) | 2010-12-14 | 2010-12-14 | Relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020658342XU CN201918322U (en) | 2010-12-14 | 2010-12-14 | Relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918322U true CN201918322U (en) | 2011-08-03 |
Family
ID=44418114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020658342XU Expired - Fee Related CN201918322U (en) | 2010-12-14 | 2010-12-14 | Relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201918322U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354197A (en) * | 2013-04-26 | 2013-10-16 | 东莞市中汇瑞德电子有限公司 | Relay |
| CN106406184A (en) * | 2016-11-15 | 2017-02-15 | 江西航同电气科技有限公司 | Built-in wireless communication and automatic detection and alarm relay module |
| CN106558453A (en) * | 2015-09-30 | 2017-04-05 | 明光市和诚电气有限公司 | A kind of light-duty relay |
-
2010
- 2010-12-14 CN CN201020658342XU patent/CN201918322U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354197A (en) * | 2013-04-26 | 2013-10-16 | 东莞市中汇瑞德电子有限公司 | Relay |
| CN103354197B (en) * | 2013-04-26 | 2016-09-14 | 东莞市中汇瑞德电子股份有限公司 | A kind of relay |
| CN106558453A (en) * | 2015-09-30 | 2017-04-05 | 明光市和诚电气有限公司 | A kind of light-duty relay |
| CN106406184A (en) * | 2016-11-15 | 2017-02-15 | 江西航同电气科技有限公司 | Built-in wireless communication and automatic detection and alarm relay module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103675669B (en) | Breaker electrical endurance monitoring system and method | |
| CN101858958A (en) | Intelligent device and method for monitoring vacuum circuit breaker on line | |
| CN202326145U (en) | Protection circuit of compressor and air conditioner | |
| CN203054158U (en) | Arc fault detecting device with working state indicating function | |
| CN201918322U (en) | Relay | |
| RU2013116582A (en) | AUTOMATIC SWITCH WITH FAILURE INDICATOR AND SECONDARY POWER SUPPLY | |
| CN202634058U (en) | Low-voltage household distribution box with power-down automatic illuminating apparatus | |
| CN207994725U (en) | A kind of control system with switch abnormality detection and alarm function | |
| CN202459926U (en) | Fire extinguishing system with automatic detection function | |
| CN207337169U (en) | A kind of energy saving fire-fighting equipment apparatus for monitoring power supply | |
| CN105865532A (en) | Monitoring and alarming system for transformer substation secondary system TMOV lightning arrester main board | |
| CN211785890U (en) | Transformer monitoring device and transformer system | |
| CN217305439U (en) | Tripping capacity detection device for electromagnetic tripping device of low-voltage direct-current circuit breaker | |
| CN109580211A (en) | A kind of mechanical characteristic test system of high-voltage circuitbreaker | |
| CN206116305U (en) | Small -sized DC circuit breaker | |
| CN205666686U (en) | Distribution equipment remote management system | |
| CN208608157U (en) | A kind of durable line-breaker | |
| CN205581275U (en) | Railway electric locomotive battery insufficient voltage detection alarm device | |
| CN114460455A (en) | Device and method for detecting tripping capability of electromagnetic tripping device of low-voltage direct-current circuit breaker | |
| CN105182963B (en) | A kind of test device of fire resisting shutter door controller | |
| CN208539573U (en) | A kind of phase-change switch that can prevent detection automatically | |
| CN209514000U (en) | Divide-shut brake coil fault detector | |
| CN202888715U (en) | Switch-cabinet control unit and switch cabinet | |
| CN206922506U (en) | A kind of intelligent integrated switch board circuit | |
| CN206894975U (en) | Intelligent lighting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20181214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |