CN201278456Y - Intelligent security electric control device - Google Patents
Intelligent security electric control device Download PDFInfo
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- CN201278456Y CN201278456Y CNU2008200543243U CN200820054324U CN201278456Y CN 201278456 Y CN201278456 Y CN 201278456Y CN U2008200543243 U CNU2008200543243 U CN U2008200543243U CN 200820054324 U CN200820054324 U CN 200820054324U CN 201278456 Y CN201278456 Y CN 201278456Y
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- 101000629937 Homo sapiens Translocon-associated protein subunit alpha Proteins 0.000 claims abstract description 4
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- 102100026231 Translocon-associated protein subunit alpha Human genes 0.000 claims abstract description 4
- 102100028160 Translocon-associated protein subunit gamma Human genes 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses an intelligent security protection electrically controlled device, including intelligent automatically controlled protection unit and air circuit breaker, air circuit breaker connects in three-phase supply circuit, and intelligent automatically controlled protection unit includes that voltage sampling detects and excessive pressure, undervoltage protection circuit, open-phase sampling protection circuit, current sampling detect and overflow open-phase protection circuit, and three-phase supply circuit is all inserted to the signal sample end of the automatically controlled protection unit of intelligence, and signal output part all inserts air circuit breaker trip coil through the computer main control unit circuit of connecting, the automatically controlled protection unit of intelligence is still including electric leakage sampling preliminary examination protection circuit, by control transformer KB1, solid state relay SSR1 ~ SSR3, DC power supply VCC, resistance R1 ~ R10, L0, D0, IC1 ~ IC5 connect to constitute, and it connects on three-phase supply circuit through electric leakage mutual inductance coil L0. The utility model discloses among introducing current switch with electric leakage preliminary examination protect function, not closing a floodgate at the switch promptly, under the electroless condition of load end, the preliminary examination load end electric leakage trouble to locking device can not close a floodgate, only gets rid of electric leakage trouble rear and can reset, throws into normal operating after closing a floodgate.
Description
Technical field:
The utility model relates to a kind ofly strides the multifunctional high-performance of forceful electric power and light current and has preliminary examination electric leakage and short trouble; prevent the intelligent safety protection electric control apparatus of electric disaster hidden-trouble and electric shock hidden danger, have the intelligent safety protection electric control apparatus of functions such as online detection failure protection, locking, demonstration, warning function and parameter tuning simultaneously concurrently.
Background technology:
Existing switching device is almost completely without Based Intelligent Control, and the more pre-checking functions of fault-free is still continued to use consistent traditional structure decades, as manual type, electromagnetic type and mechanical type, and its function singleness, and cut-off velocity is slower, can not guarantee Electrical Safety.And leak current fault not only can cause equipment damage and waste of energy, more jeopardizes personal safety, so a kind of intelligence controlling device that can carry out preliminary examination to leak current fault of current market in urgent need.
The utility model content:
Defective at the prior art existence; the utility model purpose is intended among the existing switch of electric leakage preliminary examination defencive function introducing; promptly do not close a floodgate at switch; under the no electric situation of output (being load end); detect the load end leak current fault in advance; and locking device can not close a floodgate, and can close a floodgate normal power supply after having only the leak current fault of eliminating.
Technical solution of the present utility model: a kind of intelligent safety protection electric control apparatus; comprise intelligent electric-controlled protected location and air circuit; air circuit is connected in the three-phase load circuit; intelligent electric-controlled protected location includes voltage sample and detects and overvoltage; under-voltage protecting circuit; phase shortage sampling protective circuit; current sample detects and the overcurrent open-phase protection circuit; the signal sampling end of intelligent electric-controlled protected location all inserts the three phase supply circuit; signal output part all inserts the air circuit tripping coil by the microcomputer main control unit circuit that connects; described intelligent electric-controlled protected location also includes electric leakage sampling preliminary examination protective circuit; by control transformer KB1; solid-state relay SSR1～SSR3; DC power supply VCC; resistance R 1～R10; L0; D0; IC1～IC5 connects and composes, and it is connected on the three phase supply circuit by electric leakage mutual inductor L0.
Described microcomputer main control unit circuit is connected with and closes, parallel circuit, reset circuit, parameter tuning circuit, and warning circuit and display circuit wherein close, the signal output part of parallel circuit is connected to air circuit respectively and closes a floodgate and broken coil.
Each protective circuit that described intelligent electric-controlled protected location comprises all is connected to air circuit combined floodgate, broken coil and tripping coil through microcomputer main control unit circuit, control gate circuit; Wherein voltage sample detection and overvoltage, under-voltage protecting circuit and current sample detection and overcurrent, open-phase protection circuit are connected to microcomputer main control unit circuit through the A/D change-over circuit.
Be connected to the fault locking circuit between described microcomputer main control unit circuit and the control gate, by IC17A, IC6A, IC19A, button S1, resistance R 18, capacitor C 2 and DC power supply constitute, and insert single-chip microcomputer by IC17A wherein.
As preferred version; intelligent electric-controlled protected location circuit in the intelligent safety protection electric control apparatus of the present invention also can comprise the short circuit preliminary examination protective circuit that is made of DC power supply Vcc, JX1, JX2, JX3, IC2, R12, R13, R14; the contact of JX1, JX2, JX3 is connected on respectively on the three phase supply circuit, and the output of IC8 signal is connected to single-chip microcomputer.
The above-mentioned electric-control system that the utility model provides is introduced the pre-checking functions of electric leakage in existing switch, can not close a floodgate at switch, under the no electric situation of load end (being output), detect the load end leak current fault in advance, and locking device can not close a floodgate, and can close a floodgate normal power supply after having only the leak current fault of eliminating.The present invention also has parameter tuning, measuring ability, overvoltage, under-voltage protection function, the pre-checking functions of short circuit, overcurrent and phase failure protection function, fault locking function, demonstration and warning function except electric leakage preliminary examination defencive function; Can solve faults such as electric leakage, short circuit effectively, stop electrical fire and electric shock hidden danger, save the energy simultaneously, guarantee equipment and personal safety.
Description of drawings:
Fig. 1 is an intelligent safety protection electric control apparatus electrical principle block diagram;
Fig. 2 is the intelligent safety protection electric control apparatus circuit connecting figure;
Fig. 3 is the intelligent safety protection electric control apparatus circuit connecting figure;
Fig. 4 is the intelligent safety protection electric control apparatus circuit connecting figure;
Fig. 5 is the intelligent safety protection electric control apparatus circuit connecting figure;
Embodiment:
Below in conjunction with accompanying drawing technical solutions of the utility model are described further.
Fig. 1 is an intelligent safety protection electric control apparatus electrical principle block diagram.Major loop is an air circuit, and control loop is the Based Intelligent Control protected location.The air circuit control end threads off air circuit combined floodgate, disjunction and fault by the microcomputer main control unit by the control gate output signal.The Based Intelligent Control protected location comprises voltage sample detection and overvoltage, under-voltage protecting circuit; phase shortage sampling protective circuit, electric leakage sampling preliminary examination protective circuit, short circuit sampling preliminary examination protective circuit; current sample detection and overcurrent, open-phase protection circuit; the fault locking circuit, A/D change-over circuit, microcomputer main control unit circuit; the control gate circuit; close, parallel circuit, reset circuit, parameter tuning circuit, display circuit, warning circuit.Above-mentioned each protective circuit sampling end all is connected to the three phase supply circuit, and wherein the output of phase shortage sampling protective circuit, electric leakage sampling preliminary examination protective circuit and short circuit sampling preliminary examination protective circuit directly inserts the microcomputer main control unit; Wherein voltage sample detection and overvoltage, under-voltage protecting circuit, current sample detection and overcurrent, open-phase protection circuit, output all is connected to the A/D change-over circuit, and its output is connected to the microcomputer main control unit again.
Electric leakage sampling preliminary examination protective circuit and fault locking circuit are the circuit that intelligent safety protection electric control apparatus of the present invention shows unique characteristics; the function of electric leakage sampling preliminary examination protective circuit is to detect the load end circuit in advance to have or not leak current fault before native system closes a floodgate; as detected leak current fault; device automatically locks; refusal closes a floodgate, and shows the fault content, and sound and light alarm is arranged; fault is not got rid of, and device can not reset to close a floodgate and send.Thereby prevent that effectively leak current fault from taking place, and guarantees power consumption equipment and personal safety.
The physical circuit of intelligent safety protection electric control apparatus connects figure referring to Fig. 2-5.Wherein, the microcomputer main control unit is single-chip microcomputer IC13, referring to Fig. 5.It is the core devices of Based Intelligent Control protection part, and control gate is made of IC17a, IC16 connection, and lock-in circuit is made of IC6a, IC19A.1 pin of the Pin10～Pin14 of single-chip microcomputer IC13 and IC24 is the button input interface; connect with button AN1～AN6 respectively; AN1～AN6 corresponds to " closing ", " branch ", " setting ", "-", "+", the Reset button respectively; button is set can be set and regulate parameters such as size of current, voltage height, time-delays; "+", "-" button can increase or reduce the size of load voltage value, load current value; the height of overvoltage and under-voltage protection value and overpressure value (v), the delay time (s) of under-voltage value, realize adjusting of circuit parameter.Reset button connects 1 pin of " house dog " chip IC 24, and 9 pin by 7 pin and IC13 link.
After the control section of device powers on, promptly enter the fault pretest state.Load end is not as having electric leakage and short trouble, power end is as no overvoltage, under-voltage, open-phase fault, single-chip microcomputer IC13 is respectively from IC8 and IC28 reading of data, and send normally operating instruction, and pressing AN1, IC13 sends instruction, make 5 pin of IC19, output level " 1 " is delivered to 11,12 pin of IC16, and the output of 5,6 pin is to 2 pin of IC18.Make 3, the 4 pin conductings of IC18.CM1 breaker closing coil gets electric, and system enters to close a floodgate and send electric normal operating condition.
The addressing of the P0 address mouth of single-chip microcomputer IC13 is finished by IC14, the output 1Q of the IC14～low eight bit address A0～A7 of 8Q output, and wherein A0, A1, A2 are connected to 25,24,23 pin of IC28, and IC28 latchs when ale signal descends after receiving the IC13 gating signal; The P3 mouth sends " writing " signal WR, and then the ST of IC28 is a high level, starts conversion, and voltage signal and current signal IA, IB, IC are converted to digital signal respectively to D0～D7, reads in the P0 mouth of IC13 then.IC13 handles data, as faults such as no overvoltage, under-voltage, overcurrents, then outputs signal to the control end of air circuit, and device is operation normally; Simultaneously by the P0 mouth data are delivered to 7～14 pin of display IC23, IC23 demonstrates magnitude of voltage and three-phase electricity flow valuve respectively; If any fault, then display shows the fault content, and corresponding malfunction indicator lamp is bright, the Q5 pin output signal " 1 " of IC12, IC17B is opened the door, and the audio signal that IC32 sends is delivered to 3 pin of IC17B, exports IC7D driving buzzer to by 6 pin and sends " toot-toot-toot " chimes of doom.
Voltage sample detection and overvoltage, under-voltage protecting circuit are referring to Fig. 4; connect formation by voltage sample transformer secondary output (8V), bridge rectifier D29～D32, RW4, R50, C10, DW3, voltage detecting and overvoltage, under-voltage protecting circuit connect 26 pin that end exports A/D change-over circuit IC28 to altogether by voltage-stabiliser tube DW3 and RW4, R50.
Phase shortage sampling protective circuit is referring to Fig. 3, and by 1～14 pin of R9 '～R11 ', D4～D15, IC1, R5 '～R8 ', IC8 connect formation.With A is example mutually, and just often, the A phase current is through 3,4 pin of R11 and bridge rectifier D12～D15 to IC1, then 14 pin of IC1 are exported impulse wave, if lack the A phase, then IC1 is output as " 1 ", deliver to the P0 mouth of single-chip microcomputer IC13 through IC8, IC13 sends instruction makes IC17A be output as " 0 ", and IC16 is output as " 1 ", and IC15 ends, circuit breaker tripping maybe can not close a floodgate, display shows " phase shortage A ", and corresponding indicator light is bright, sends " toot-toot-toot " and reports to the police.When B, C phase phase shortage, operation principle is identical therewith, repeats no more.
Current sample detection and overcurrent, open-phase protection circuit and short-circuit protection circuit; referring to Fig. 4, constitute by threephase current transformer L1, L2, L3, R19, R21, R23～R54, diode D16～D28, voltage-stabiliser tube DW1～DW2, DW4, amplifier IC9, IC10, IC22 and IC29, d type flip flop IC11A connection.L1, L2, L3 is elementary is three-phase power line, and current sample detection and overcurrent, open-phase protection circuit divide two-way output: the one tunnel exports 27,28 and 1 pin of A/D change-over circuit IC28 to, constitutes overcurrent and open-phase protection circuit; The 6 pin output of another route d type flip flop IC11A is connected to 1 pin of lock-in circuit IC17A, constitutes short-circuit protection circuit.
Electric leakage sampling preliminary examination protective circuit referring to Fig. 2, is connected and composed by control transformer KB1, solid-state relay SSR1～SSR3, DC power supply VCC, resistance R 1～R10, L0, D0, IC1～IC5.
The operation principle of electric leakage sampling preliminary examination protective circuit is: when device powers on and when not closing a floodgate; device enters the preliminary examination state; single-chip microcomputer sends instruction makes JXL1～JXL3 coil successively; its corresponding normally opened contact is closed successively; KB1 secondary winding transformer electric current is sent into load end A successively; B; the C three-phase; when reaching set point as the load end earth leakage current; electric leakage instrument transformer L0 sends into electric leakage signal the negative terminal of IC1 through R7; after amplifying rectification, enter the negative terminal of IC3; its amplitude is more than or equal to the normal voltage of IC3 anode; make IC6A output level become " 0 ", behind IC17A, be sent to IC16 output " 1 " again IC15 is ended, the CM1 circuit breaker tripping by " 1 ".Display shows leak current fault, sends the sound and light alarm signal simultaneously.
The fault locking circuit, referring to Fig. 2: by IC17A, IC6A, IC19A, button S1, resistance R 18, capacitor C 2 and DC power supply VCC constitute.
Its operation principle is: when fault took place, 4 pin of IC6A or IC19A became 0 by 1, and its output becomes 0 by 1, IC17A is sealed up a door, and its output is 0, installs locked, can not close a floodgate, and before fault do not get rid of, device can not reset and also can not close a floodgate; Have only after fault is got rid of, press knob down S1, make 0 level be input to the CLR end of IC6A or IC19A; The output of IC6A or IC19A becomes 1 by 0, and IC17A is opened, the device combined floodgate running status of being allowed for access.Wherein be connected the closing of determination device, branch and trip status with control signal wire with 13 pin of door IC17A.
Short circuit sampling preliminary examination protective circuit referring to Fig. 3, is made of Vcc, JX-1, JX-2, JX-3, R12～R17, RW1～RW3, IC2, IC7, IC8 connection.IC8 output is connected to the P0 mouth of single-chip microcomputer IC13, and threephase load end A ', B ', C ' link with the normally opened contact of JX-1, JX-2, JX-3 respectively.
The operation principle of short circuit sampling preliminary examination protective circuit is: when the apparatus control portion branch powers on and switch when not closed, device enters the preliminary examination state, and it is electric that the coil of JX-1～JX-3 gets, the normally opened contact closure.When the three-phase circuit load end does not have short trouble, IC2 is output as " 1 ", when three-phase circuit load end A ' was short-circuited with B ', electric current was by 1 pin → ground of another normally opened contact → RW1 of normally opened contact 7 → A ' → B ' → JX-1 → IC2 of Vcc → JX-1, and then the output of 16 pin of IC2 is by " 1 " → " 0 ", IC16 is output as " 1 ", IC15 is ended, and display shows short circuit AB, and sends " toot-toot-toot " and report to the police, show that system can not be closed, can prevent that the short circuit combined floodgate from causing a serious accident.Adjust RW1 and can make a short-circuit resistance of between A ', B ' transfer to 3 Ω, satisfied the demand of actual conditions fully.
When three-phase circuit load end B ' was short-circuited with A ' with C ' or C ', preliminary examination short circuit work engineering was same as described above.
Reset circuit is made of chip IC 24, key switch AN6, diode D25, resistance R 47, R48 connection, 6 pin of IC24 are connected to 19 pin of data port chip IC 19, referring to Fig. 5, it can make single-chip microcomputer IC13 self-starting, prevents to crash and make the single-chip microcomputer initial reset.
Warning circuit is made of frequency divider IC32, door IC17B, reverser IC7D, R64, buzzer FM connection, and referring to Fig. 5, the input of IC17B is connected to 12 pin of IC12, and the CLK pin of frequency divider IC32 connects with the data/address bus of single-chip microcomputer IC13.
Display circuit is made of reverser IC25, IC23, R61, R57 connection.Referring to Fig. 5, the P0 data wire of IC13 and IC23 data wire 7～14 lines link, and left and right screen is elected CS1, CS2 pin as, and the read-write of IC13 is connected to 6 pin of IC23, and instruction shows V, I value and fault content respectively to display screen according to IC13.
Three-phase current IA, IB, IC send into the three-phase full-wave precise rectification circuit by L1, L2, L3 after gathering, referring to Fig. 4, the three-phase full-wave precise rectification circuit is made of IC9, IC10, IC22, IC29, D16～D28, R19～R54, with the IA rectification is example, the voltage U IA of IA on R26 is amplified to 1 pin through IC10A, when current signal UIA was positive half cycle, signal was held through "+" that R39 delivers to IC10D, in the output that its output obtains with the UIA voltage swing equates, phase place is identical; When UIA was negative half period, then signal was delivered to 6 pin "-" end of IC10B through R19, obtained voltage magnitude and UIA is equal, phase place is opposite output at its output.So just realized the all-wave precision rectifying, the UIA full wave rectified signal reads in the P0 mouth of single-chip microcomputer IC13 again through the analog quantity input of IC10B emitter follower by R32 output IC9A after IC28 carries out the A/D conversion, dealt with by IC13.In like manner the sampled signal of IB, IC is converted to the P0 mouth that reads in single-chip microcomputer after the digital signal through said process.
The analog signal of IA, IB, IC is also delivered to "-" end of voltage comparator ic 9A, IC9B, IC9C simultaneously, when electric current is 2 times of load current value, then amplitude reaches "+" end comparing voltage value amplitude, its output level turns over low and sends into 4 pin of IC11A, the 6 pin signals of IC11A turn over " 0 " by " 1 ", make IC17A be output as 0, after the IC16 paraphase IC15 are ended, CM1 threads off, the circuit breaker disjunction.This circuit cuts off as the hardware of overcurrent or short circuit, makes overcurrent or short-circuit protection more reliable.
Voltage signal then by the secondary voltage of voltage sample transformer through bridge rectifier D29～D32 rectification, again after sending into the A/D change-over circuit after RW4, the R50 dividing potential drop and doing the A/D conversion by IC28, be read into the P0 mouth of single-chip microcomputer IC13 again.
DC power supply circuit is a universal circuit, and its principle is not given unnecessary details.
Each chip symbol and model contrast are as follows:
IC1、IC2 TLP521-4
IC3 74HC244
IC4 7406
IC5、IC6、IC7、IC9 LM324
IC8 LM339
IC10 74HC74
IC11 ADC0809
IC12 74HC14
IC13 AT89C52
IC14 74HC573
IC15、16 74HC273
IC17 74HC11
IC18 HC2003
IC19、20、21 JGX-16F
IC22 MAX813L
IC23 24C04
IC24 74HC32
IC25 74HC08
IC27 74HC138
IC28 VCM128*64
IC29 74HC4040
The utility model has the advantages that with electric leakage sampling preliminary examination holding circuit and by single-chip microcomputer and control gate circuit group The Based Intelligent Control protected location and the air-break that become combine, and have consisted of intelligent safety protection electric control apparatus, fault Detect, holding circuit had both comprised conventional short-circuit protection circuit, current detecting and overcurrent, open-phase protection circuit, Voltage detecting and overvoltage, under-voltage protecting circuit, open-phase protection circuit also include electric leakage preliminary examination protection especially Circuit, type of the present invention is online except having overcurrent, short circuit, disconnected phase, overvoltage, under-voltage, phase shortage, electric leakage etc. Fault detect and protection, fault locking, liquid crystal display, warning function particularly have before system's combined floodgate Load end leak current fault preliminary examination defencive function, so multiple functional, the property of type intelligent safety protection electric control apparatus of the present invention Energy is superior, cut-out is quick, safe and reliable, be expected real electric short circuit or the leakage fire hidden danger thoroughly eliminated.
Claims (6)
1; a kind of intelligent safety protection electric control apparatus; comprise intelligent electric-controlled protected location and air circuit; air circuit is connected in the three-phase load circuit; intelligent electric-controlled protected location includes voltage sample and detects and overvoltage; under-voltage protecting circuit; phase shortage sampling protective circuit; current sample detects and the overcurrent open-phase protection circuit; the signal sampling end of intelligent electric-controlled protected location all inserts the three phase supply circuit; signal output part all inserts the air circuit tripping coil by the microcomputer main control unit circuit that connects; it is characterized in that; described intelligent electric-controlled protected location also includes electric leakage sampling preliminary examination protective circuit; by control transformer KB1; solid-state relay SSR1～SSR3; DC power supply VCC; resistance R 1～R10; electric leakage mutual inductor L0; diode D0; chip IC 1～IC5 connects and composes, and it is connected on the three phase supply circuit by electric leakage mutual inductor L0.
2, according to the described intelligent safety protection electric control apparatus of claim 1, it is characterized in that described microcomputer main control unit circuit be connected with close, parallel circuit, reset circuit, parameter tuning circuit, warning circuit and display circuit wherein close, the signal output part of parallel circuit is connected to air circuit respectively and closes a floodgate and broken coil.
3,, it is characterized in that each protective circuit that described intelligent electric-controlled protected location comprises all is connected to air circuit combined floodgate, broken coil and tripping coil through microcomputer main control unit circuit, control gate circuit according to the described intelligent safety protection electric control apparatus of claim 1; Wherein voltage sample detection and overvoltage, under-voltage protecting circuit and current sample detection and overcurrent, open-phase protection circuit are connected to microcomputer main control unit circuit through the A/D change-over circuit.
4, according to the described intelligent safety protection electric control apparatus of claim 1; it is characterized in that described intelligent electric-controlled protected location circuit also can comprise the short circuit preliminary examination protective circuit that is made of DC power supply Vcc, relay J X1, JX2, JX3, chip IC 2, resistance R 12, R13, R14; the contact of relay J X1, JX2, JX3 is connected on respectively on the three phase supply circuit, and the output of chip IC 8 signals is connected to single-chip microcomputer.
5,, it is characterized in that being connected to the fault locking circuit between described microcomputer main control unit circuit and the control gate according to the described intelligent safety protection electric control apparatus of one of claim 1-4.
6, according to the described intelligent safety protection electric control apparatus of claim 5, it is characterized in that described fault locking circuit is by chip IC 17A, IC6A, IC19A, button S1, resistance R 18, capacitor C 2 and DC power supply VCC constitute, and insert single-chip microcomputer by chip IC 17A wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200543243U CN201278456Y (en) | 2008-09-02 | 2008-09-02 | Intelligent security electric control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200543243U CN201278456Y (en) | 2008-09-02 | 2008-09-02 | Intelligent security electric control device |
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| Publication Number | Publication Date |
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| CN201278456Y true CN201278456Y (en) | 2009-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200543243U Expired - Lifetime CN201278456Y (en) | 2008-09-02 | 2008-09-02 | Intelligent security electric control device |
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| CN (1) | CN201278456Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950946A (en) * | 2010-09-17 | 2011-01-19 | 徐洪 | Super-prevention intelligent protector |
| CN102110971A (en) * | 2009-12-23 | 2011-06-29 | 张斌 | Intelligent protection controller for low-voltage distribution room |
| CN102882189A (en) * | 2012-09-22 | 2013-01-16 | 天津中电华利电器科技集团有限公司 | Intelligent controller for circuit breaker |
| CN103904614A (en) * | 2014-04-11 | 2014-07-02 | 邵阳卫士消防监控技术开发有限公司 | Voltage drop method detection technology for electrical fire prevention and control |
| CN104201639A (en) * | 2014-08-29 | 2014-12-10 | 宿松恒达电气配件有限公司 | Air switch |
-
2008
- 2008-09-02 CN CNU2008200543243U patent/CN201278456Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110971A (en) * | 2009-12-23 | 2011-06-29 | 张斌 | Intelligent protection controller for low-voltage distribution room |
| CN101950946A (en) * | 2010-09-17 | 2011-01-19 | 徐洪 | Super-prevention intelligent protector |
| CN102882189A (en) * | 2012-09-22 | 2013-01-16 | 天津中电华利电器科技集团有限公司 | Intelligent controller for circuit breaker |
| CN103904614A (en) * | 2014-04-11 | 2014-07-02 | 邵阳卫士消防监控技术开发有限公司 | Voltage drop method detection technology for electrical fire prevention and control |
| CN104201639A (en) * | 2014-08-29 | 2014-12-10 | 宿松恒达电气配件有限公司 | Air switch |
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Effective date of registration: 20180408 Address after: 410013 Room 101 of the 456 scientific research and production building of the Lu Song Road, Changsha high and New Development Zone, Hunan Patentee after: Hunan Unisplendour Measuring & Control Co., Ltd. Address before: 410013 group M5 group of Hexi High-tech Industrial Development Zone in Changsha, Hunan Patentee before: Hunan Ziguang Daoran Electrical Appliance Co., Ltd. |
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Granted publication date: 20090722 |
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