CN106257782B - Ac leakage drives protector - Google Patents
Ac leakage drives protector Download PDFInfo
- Publication number
- CN106257782B CN106257782B CN201610366412.6A CN201610366412A CN106257782B CN 106257782 B CN106257782 B CN 106257782B CN 201610366412 A CN201610366412 A CN 201610366412A CN 106257782 B CN106257782 B CN 106257782B
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- Prior art keywords
- contact
- leakage
- circuit
- detection circuit
- fault detection
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/207—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage also responsive to under-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
- H02H3/253—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage for multiphase applications, e.g. phase interruption
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of ac leakages to drive protector, and fault detection circuit and electric leakage driving protection location, the driving unit including harmonics device include a group relay contact and capacitance, capacitance（C1）One the first contact of relay termination（24）, a phase line of another termination AC power of capacitance, the second contact of relay（21）Connect the second contact of fault detection circuit（11）；The first contact of fault detection circuit（12）Ground wire, the 3rd contact of fault detection circuit（14）For dead end；When ac power supply circuit breaks down, turned on by phase line, capacitance, relay contact closure, the second contact of fault detection circuit output terminal with the first contact, be grounded and form detection of electrical leakage driving circuit, control leakage switch（LK）It disconnects.Ac leakage of the present invention drives protector when power supply circuit breaks down, and electric leakage driving protection location can drive earth leakage protective device to cut off ac power circuit, improve supply network safety and reliability.
Description
Technical field
The present invention relates to a kind of harmonics device more particularly to a kind of ac leakage driving protectors.
Background technology
The three-phase alternating-current powered failure of supply network mainly has at present：Misphase, phase shortage, overvoltage, under-voltage, imbalance,
It lacks zero, lack ground, overcurrent.Single-phase ac power supply failure mainly has：Overvoltage, under-voltage lack zero, lack ground, overcurrent.Existing three-phase
The air switch with creepage protection function and breaker have three-phase circuit overcurrent and creepage protection function in power supply circuit, and certainly
Body has the ability of cut-out circuit, referring to Fig. 1；The protection of other power supply troubles is by electronic apparatus protective device（Such as three is intersecting
Flow protector）Protection is realized in cut-out and control loop with A.C. contactor composition.For example, by representative electronic apparatus
Product three-phase alternating current protector is installed in three phase supply loop protection circuit, and referring to Fig. 1, three-phase alternating current protector includes output
One group of contact at end, wherein the first contact 12, the second contact 11, the 3rd contact 14, three-phase alternating-current supply A, B, C access three is intersecting
Flow protector input terminal；When three-phase alternating-current supply A, B, C phase works normally, electric leakage air switch LK closes, and three-phase alternating current is protected
The second contact 11 and the first contact 14 for protecting device output terminal are attracted, and A.C. contactor actuating coil JK is attracted, and A.C. contactor K is led
It is logical, load（Such as motor M）Access three-phase alternating-current supply.When three-phase alternating-current supply A, B, C phase breaks down, three-phase alternating current is protected
The first contact 11 and the 3rd contact 14 for protecting device output terminal disconnect, and A.C. contactor actuating coil JK releases, A.C. contactor K breaks
It opens, loads（Such as motor M）It is disconnected with three-phase alternating-current supply.Three-phase alternating current protector is by the fault-signal that detects and passes through
The contact 11,14 of itself output terminal is controlled to disconnect, cuts off A.C. contactor actuating coil JK circuits, disconnects A.C. contactor K
Power supply circuit obtains the purpose of protection load.
But the defects of existing supply network is to leak electricity, air switch LK only has the cut-out circuit function of itself,
Its failure（Such as overvoltage/undervoltage, misphase, disconnected phase）It can only be disconnected by the contact 11,14 of three-phase alternating current protector, be exchanged by cutting off
Contactor actuating coil JK, so as to disconnect A.C. contactor K cut-out circuits.Fig. 1 discloses three phase supply loop protection circuit,
Single phase power supply loop protection circuit and three phase supply loop protection circuit are similarly.
The content of the invention
It is an object of the invention to provide a kind of ac leakages to drive protector, and ac leakage driving protector is being powered
During circuit malfunctions, electric leakage driving protection location can drive earth leakage protective device to cut off ac power circuit, improve confession
Electric network safety and reliability simplifies control circuit and protects the implementation of circuit.
In order to realize above-mentioned technical purpose, the present invention adopts the following technical scheme that：
A kind of ac leakage drives protector, includes the fault detection circuit of harmonics device, the fault detection circuit bag
Multigroup contact of AC power incoming end and output terminal is included, every group of contact is three, is respectively the first contact, the second contact
With the 3rd contact, switch is inscribed in the second contact, which can access the first contact or the 3rd contact；Fault detection circuit is connected on friendship
Galvanic electricity source；
The ac leakage driving protector further includes electric leakage driving protection location, which includes a group relay
Contact and capacitance, one the first contact of relay termination of capacitance, a phase line of another termination AC power of capacitance, relay second touch
Point connects the second contact of fault detection circuit；The first contact of fault detection circuit ground wire, fault detection circuit the 3rd touch
Point is dead end；When ac power supply circuit breaks down, exported by phase line, capacitance, relay contact closure, fault detection circuit
The second contact is held to be turned on the first contact, is grounded composition detection of electrical leakage driving circuit, the control electric leakage of detection of electrical leakage driving circuit
Switch disconnects.
The relay is delay attracting electric relay.
The electric leakage driving protection location includes two group relay contacts and capacitance, first group of relay contact and capacitance
One one phase line of termination of built-up circuit, the second contact of another first group of termination fault detection circuit output terminal, second group after
One another phase line of termination of appliance contact and capacitance built-up circuit, the second of another second group of termination fault detection circuit output terminal
Contact.
The electric leakage driving protection location includes two group relay contacts and capacitance, first group of relay contact and capacitance
One one phase line of termination of built-up circuit, the second contact of another first group of termination fault detection circuit output terminal, second group after
One another phase line of termination of appliance contact and capacitance built-up circuit, the second of another first group of termination fault detection circuit output terminal
Contact.
The fault detection circuit is voltage failure detection circuit or current failure detection circuit.
The harmonics device is single phase ac protector, and the electric leakage driving protection location is installed on single phase ac protection
In device, and single phase ac protector makes protector plug, is engaged with the socket for being installed on single phase ac circuit.
Ac leakage driving protector of the present invention includes fault detection circuit and electric leakage driving protection location, fault detect electricity
Contain in the general harmonics device in road, when power supply circuit breaks down, the existing exchange of electric leakage driving protection location driving supplies
Earth leakage protective device in electric protection circuit, so as to cut off ac power circuit.
Compared with prior art, the present invention its advantage is：
The present invention utilizes the earth leakage protective device with creepage protection function, air switch, the cut-out circuit function of breaker, no
Be only capable of playing defencive function to short circuit, electric leakage, overcurrent, but also for other failures of supply network, such as phase shortage, lack zero,
Ground, over-pressed, under-voltage, misphase, imbalance etc. are lacked, is played a protective role.So as to subtract the ac contactor in harmonics circuit
Device reduces the cost of defencive function.
The electric leakage driving protection location of ac leakage driving protector of the present invention exchanges guarantor with containing fault detection capability
Shield device is combined, and is combined into the harmonics of new generation that can directly drive earth leakage protective air switch and earth leakage circuit breaker
Device simplifies defencive function, universalness, and nor affects on harmonics device output contact and make as control circuit contact
With.
Ac leakage of the present invention driving protector solves the three-phase alternating-current powered error protection, single-phase of current supply network
Alternating Current Power Supply error protection cuts off the limitation of main circuit using A.C. contactor.The present invention utilizes earth leakage protective device（Or electric leakage
Switch）Main circuit is cut off when supply network breaks down, simplifies power supply and distribution circuitry cuts mode, accessory is reduced, saves
Distribution cost cuts off circuit using the high earth leakage protective device of safety coefficient, has supply network safety and reliability larger
It improves, loss caused by reducing distribution fault indirectly, simplify control circuit and protects the implementation of circuit.
Description of the drawings
Fig. 1 is existing three phase supply loop protection conspectus；
Fig. 2 is the conspectus that ac leakage of the present invention drives protector access three-phase alternating-current supply；
Fig. 3 is another conspectus that ac leakage of the present invention drives protector access three-phase alternating-current supply；
Fig. 4 is the conspectus that ac leakage of the present invention drives protector access single phase alternating current power supply；
Fig. 5 is another conspectus that ac leakage of the present invention drives protector access single phase alternating current power supply；
Fig. 6 drives protector to be combined with protector and makes plug form access single phase alternating current power supply for ac leakage of the present invention
Conspectus.
Specific embodiment
The invention will be further described in the following with reference to the drawings and specific embodiments.
Referring to Fig. 2, Fig. 3, a kind of ac leakage drives protector, includes the fault detection circuit of harmonics device, the event
Hinder multigroup contact that detection circuit includes AC power incoming end A, B, C, N and output terminal, every group of contact is three, respectively
For the first contact 12, the second contact 11 and the 3rd contact 14, the inscribed switch in the second contact 11, which can access the first contact 12
Or the 3rd contact 14；Fault detection circuit is connected on the output terminal of leakage switch LK, referring to Fig. 2；Alternatively, fault detection circuit is connected on
The input terminal of leakage switch LK.
The ac leakage driving protector further includes electric leakage driving protection location, which includes a group relay
Contact and capacitance C1, mono- the first contacts of relay termination 24 of capacitance C1, a phase line C phases of another termination AC powers of capacitance C1,
The second contact of relay 21 connects the second contact of fault detection circuit 11；First contact of fault detection circuit 12 is grounded,
The 3rd contact 14 of fault detection circuit is dead end.When ac power supply circuit breaks down, by C phases phase line, capacitance C1, relay
Contact 24,21 is closed, fault detection circuit output terminal the second contact 11 and the first contact 12 turn on, are grounded composition detection of electrical leakage
Driving circuit, detection of electrical leakage driving circuit control leakage switch LK are disconnected.
In order to which three-phase alternating current protector is allow to be connected to earth leakage protective device（Leakage switch LK）Output terminal, electric leakage driving
Relay in protection location is delay attracting electric relay, and earth leakage protective device is made to leak electricity when powering on and drives the electric leakage inspection of protection location
It surveys driving circuit to be off, it is ensured that earth leakage protective device powers on reliably.
The electric leakage driving protection location includes two group relay contacts and capacitance, first group of relay contact 24,21
A phase line C phases, the second contact of another first group of termination fault detection circuit output terminal are terminated with the one of capacitance C1 built-up circuits
11, second group of relay contact 44,41 and an another phase line B phases of termination of capacitance C2 built-up circuits, another termination failure are examined
Second contact 31 of second group of slowdown monitoring circuit output terminal.First contact 12 of first group of fault detection circuit output terminal and second group
First contact 32 is grounded, the 3rd contact 14 of first group of fault detection circuit output terminal and second group of the 3rd contact 34
Empty end.Referring to Fig. 2.
The electric leakage driving protection location includes two group relay contacts and capacitance, first group of relay contact 24,21
A phase line C phases, the second contact of another first group of termination fault detection circuit output terminal are terminated with the one of capacitance C1 built-up circuits
11, second group of relay contact 44,41 and an another phase line B phases of termination of capacitance C2 built-up circuits, another termination failure are examined
Second contact 11 of first group of slowdown monitoring circuit output terminal.The first contact 12 ground wire of first group of fault detection circuit output terminal,
3rd contact 14 of first group of fault detection circuit output terminal empties end, referring to Fig. 3.The preferential connection circuitry for selecting Fig. 2.
The fault detection circuit is voltage failure detection circuit or current failure detection circuit.
The course of work of ac leakage driving protector of the present invention is as follows：
Referring to Fig. 2 and Fig. 3, when without electric normal state, leakage switch LK（Or earth leakage protective device）When preparation powers on, exchange leakage
The electric leakage driving protection location of electric drive protector, such as first group two contacts of delay attracting electric relay 21,24, which are in, to be disconnected
State, so the detection of electrical leakage driving circuit is not turned on, another group of detection of electrical leakage driving circuit is also not turned on, leakage switch LK
It can power on.When the AC power of three-phase A, B, C phases is normal after the power is turned on, the failure in ac leakage of the invention driving protector
Output contact conducting in detection circuit, the second contact 11, the 3rd contact 14 for such as connecting the output contact of C phases turn on, and second
Contact 11 is disconnected with the first contact 12, and three-phase alternating-current supply normally accesses load；Due to being used in driving protection location in electric leakage
Delay attracting electric relay, after the power-up, two contacts of delay attracting electric relay 24,21 are entered to by off-state after being delayed and led
Logical state.
When a certain phase in three-phase alternating-current supply breaks down, the fault detection circuit in ac leakage driving protector
Second contact 11 of output contact is switched to disconnect by the second contact 11, the conducting of the 3rd contact 14, and the second contact 11 and first is touched
Point 12 is switched to turn on by disconnection, i.e. the second contact 11 is turned on the first contact 12, the electric leakage of at this moment ac leakage driving protector
The delay attracting electric relay contact 21,24 for driving protection location is in the conduction state, then C phase currents pass through capacitance C1 and delay
Two contacts 21,24 of attracting electric relay, then pass through the second contact 11 of fault detection circuit and the first contact 12 and ground wire
Leakage current circuit, i.e. detection of electrical leakage driving circuit are formed, so that leakage switch LK（Earth leakage protective device）It starts, cuts off three-phase
AC power is inputted to load circuit.In order to also obtain reliable leakage current, ac leakage driving protector in disconnected phase
Electric leakage driving protection location one group or more of relay contact and capacitance can be set, it is reliable to obtain referring to Fig. 2 and Fig. 3
Leakage current.
Above-described fault detection circuit be voltage failure detection circuit, the realization method of voltage failure detection circuit
For：Directly from three-phase or single-phase acquirement voltage signal, the electronic circuit of input AC protector is judged and relay contact
Output, and then input to the electric leakage of the present invention and drive protection location, reach protection purpose.
It is current failure detection circuit for fault detection circuit, the realization method of current failure detection circuit is：It leads back
Road add in current transformer, three-phase circuit be three current transformers, single-phase circuit be a current transformer, major loop conducting wire
Through current transformer center, electric current by when the electronic circuit of sensing electric current input AC protector that generates judge and
Relay contact exports, and similarly, and then inputs to the electric leakage of the present invention and drives protection location, reaches protection purpose.
For single phase alternating current circuit, single-phase three wire system, wherein, a phase line, a zero curve, a piece-root grafting ground wire.Single-phase
In alternating current circuit, the power supply event such as improper voltage formed with reference to single phase ac protector to overvoltage, under-voltage, line off zero
Barrier, can directly drive the air switch with creepage protection function and circuit breaker trip circuit, to be protected.
Referring to Fig. 4 and Fig. 5, a kind of single phase ac electric leakage driving protector includes the fault detect of single phase ac protector
Circuit, the fault detection circuit include three contacts of single phase alternating current power supply incoming end L, N and output terminal, are respectively first
Contact 12, the second contact 11 and the 3rd contact 14, the inscribed switch in the second contact 11, the switch can access the first contact 12 or the 3rd
Contact 14；Fault detection circuit is connected on single phase alternating current power supply and enters the lower end after leakage switch LK.
Electric leakage driving protection location is one group of delay attracting electric relay contact and capacitance C1, mono- relay terminations of capacitance C1 the
One contact 24, the phase line L of another termination AC powers of capacitance C1, the second contact of delay attracting electric relay 21 connects fault detection circuit
Second contact 11；The first contact of fault detection circuit 12 is grounded, and the 3rd contact 14 of fault detection circuit is dead end.When single-phase
When ac power supply circuit breaks down, by phase line L, capacitance C1, the closure of relay contact 24,21, fault detection circuit output terminal
Second contact 11 and the first contact 12 turn on, are grounded composition detection of electrical leakage driving circuit, the control leakage of detection of electrical leakage driving circuit
Electric switch LK is disconnected.
When without electric normal state, leakage switch LK（Earth leakage protective device）When preparation powers on, single phase ac electric leakage of the present invention is driven
Two contacts of delay attracting electric relay 21,24 of the electric leakage driving protection location of dynamic protector are off, so the leakage
Electro-detection driving circuit is not turned on, and leakage switch LK can be powered on.When single phase alternating current power supply is normal after the power is turned on, single phase ac protection
The second contact 11 of output contact is turned on the 3rd contact 14 in fault detection circuit in device, the second contact 11 and the first contact
12 disconnect, and single phase alternating current power supply normally accesses load；Due to employing delay attracting electric relay in driving protection location in electric leakage,
After the power-up, it is delayed after two contacts of attracting electric relay, 24,21 delay and conducting state is entered to by off-state.
When single phase alternating current power supply breaks down, the fault detection circuit output in ac leakage driving protector of the present invention
Second contact 11 of contact is switched to disconnect by the second contact 11, the conducting of the 3rd contact 14, and the second contact 11 and the first contact 12
Switch to turn on by disconnection, i.e. the second contact 11 is turned on the first contact 12, at this moment electric leakage driving protection location delay be attracted after
Appliance contact 21,24 is in the conduction state, then monophase current by capacitance C1 and delay attracting electric relay two contacts 21,
24, then leakage current circuit is formed with ground wire by the second contact 11 of fault detection circuit and the first contact 12, that is, it leaks electricity
Driving circuit is detected, so that leakage switch LK（Earth leakage protective device）It starts, cut-out single phase alternating current power supply is inputted to load circuit.
Ac leakage driving protector of the present invention make use of the fault detection circuit of existing harmonics device, and innovative carries
Electric leakage driving protection location is gone out, the ac leakage that the two has been bonded to the present invention drives protector, and therefore, electric leakage is driven
Dynamic protection location is integrated in existing harmonics device, such as three-phase alternating current protector or single phase ac protector, in protector
Interior earth wire composition discharge loop driving earth leakage protective device, can reduce accessory, simplify defencive function, universalness.Exchange
The electric leakage of electric leakage driving protector drives the electrical leakage quantity size of protection location that can be realized by changing capacitance C amount of capacity, with
Realize different grade of rated voltage and electric leakage grade, earth leakage protective device（Or leakage switch）Electrical leakage quantity advised according to national standard
It is fixed to determine.
Ac leakage driving protector of the present invention can be used in three-phase three-wire system, three-phase four-wire system, three-phase five-wire mode, list
In the supply networks of any line such as three-phase three-wire system, three line of two-phase, and its circuit is protected.
Ac leakage driving protector of the present invention can be combined with single phase ac protector, mounted on plug inside, group
Into the protector plug with electric leakage driving protection location, referring to Fig. 6, which is inserted into the socket for being connected to single phase ac circuit
In, the power supply troubles such as improper voltage that can be formed to the overvoltage of power grid, under-voltage, line off zero directly drive band electric leakage
The air switch of defencive function and circuit breaker trip circuit, to obtain the purpose of protection load 1 and/or load 2.Circuit letter
A single, earth leakage protective circuit only needs to fill a plug, at low cost and widely used, is particularly suitable for rural electricity consumption protection
And distance protection.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the scope of the present invention, therefore, it is all
Any modifications, equivalent replacements and improvements are made within the spirit and principles in the present invention should be included in the protection model of the present invention
Within enclosing.
Claims (6)
1. a kind of ac leakage drives protector, include the fault detection circuit of harmonics device, which includes
Multigroup contact of AC power incoming end and output terminal, every group of contact are three, are respectively the first contact（12）, second touch
Point（11）With the 3rd contact（14）, the second contact（11）Inscribed switch, the switch can access the first contact（12）Or the 3rd contact
（14）；Fault detection circuit is connected on alternating current source；It is characterized in that：
The ac leakage driving protector further includes electric leakage driving protection location, which includes a group relay contact
And capacitance, one the first contact of relay termination of capacitance, a phase line of another termination AC power of capacitance, the second contact of relay connects
The second contact of fault detection circuit（11）；First contact of fault detection circuit（12）Ground wire, fault detection circuit the
Three contacts（14）For dead end；When ac power supply circuit breaks down, by phase line, capacitance, relay contact closure, fault detect
The second contact of circuit output end（11）With the first contact（12）Conducting, ground wire form detection of electrical leakage driving circuit, detection of electrical leakage
Driving circuit control leakage switch disconnects.
2. ac leakage according to claim 1 drives protector, it is characterized in that：The relay is attracted relay for delay
Device.
3. ac leakage according to claim 1 or 2 drives protector, it is characterized in that：The electric leakage driving protection location
Including two group relay contacts and capacitance, first group of relay contact and one phase line of termination of capacitance built-up circuit are another
Terminate the second contact of first group of fault detection circuit output terminal, second group of relay contact and one end of capacitance built-up circuit
Connect another phase line, the second contact of another second group of termination fault detection circuit output terminal.
4. ac leakage according to claim 1 or 2 drives protector, it is characterized in that：The electric leakage driving protection location
Including two group relay contacts and capacitance, first group of relay contact and one phase line of termination of capacitance built-up circuit are another
Terminate the second contact of first group of fault detection circuit output terminal, second group of relay contact and one end of capacitance built-up circuit
Connect another phase line, the second contact of another first group of termination fault detection circuit output terminal.
5. ac leakage according to claim 1 or 2 drives protector, it is characterized in that：The fault detection circuit is electricity
Press fault detection circuit or current failure detection circuit.
6. ac leakage according to claim 1 or 2 drives protector, it is characterized in that：The harmonics device is single-phase
Harmonics device, the electric leakage driving protection location is installed in single phase ac protector, and single phase ac protector is made
Protector plug is engaged with the socket for being installed on single phase ac circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610366412.6A CN106257782B (en) | 2016-05-30 | 2016-05-30 | Ac leakage drives protector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610366412.6A CN106257782B (en) | 2016-05-30 | 2016-05-30 | Ac leakage drives protector |
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| Publication Number | Publication Date |
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| CN106257782A CN106257782A (en) | 2016-12-28 |
| CN106257782B true CN106257782B (en) | 2018-05-22 |
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| CN201610366412.6A Active CN106257782B (en) | 2016-05-30 | 2016-05-30 | Ac leakage drives protector |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992495A (en) * | 2017-04-20 | 2017-07-28 | 广州市豪尔生医疗设备有限公司 | A kind of earth leakage protective device |
| CN111864693A (en) * | 2019-04-25 | 2020-10-30 | 艾欧史密斯(中国)热水器有限公司 | Electric equipment, storage medium, leakage protector control device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2899225Y (en) * | 2006-03-23 | 2007-05-09 | 江苏省电力公司南京供电公司 | Break zero-loss phase protecting distribution box |
| CN104360207A (en) * | 2014-12-03 | 2015-02-18 | 国家电网公司 | Leakage protector detection desk |
| CN204967226U (en) * | 2015-07-28 | 2016-01-13 | 无锡万吉科技有限公司 | Three -sphase four -wire system residual current circuit breaker circuit |
| CN205791445U (en) * | 2016-05-30 | 2016-12-07 | 曹德祥 | Ac leakage drives protector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101595658B1 (en) * | 2014-07-28 | 2016-02-19 | 공주대학교 산학협력단 | Apparatus and method for detecting residual current |
-
2016
- 2016-05-30 CN CN201610366412.6A patent/CN106257782B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2899225Y (en) * | 2006-03-23 | 2007-05-09 | 江苏省电力公司南京供电公司 | Break zero-loss phase protecting distribution box |
| CN104360207A (en) * | 2014-12-03 | 2015-02-18 | 国家电网公司 | Leakage protector detection desk |
| CN204967226U (en) * | 2015-07-28 | 2016-01-13 | 无锡万吉科技有限公司 | Three -sphase four -wire system residual current circuit breaker circuit |
| CN205791445U (en) * | 2016-05-30 | 2016-12-07 | 曹德祥 | Ac leakage drives protector |
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| Publication number | Publication date |
|---|---|
| CN106257782A (en) | 2016-12-28 |
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