CN106229937B - Have the breaker of ground protection and creepage protection function concurrently - Google Patents

Have the breaker of ground protection and creepage protection function concurrently Download PDF

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Publication number
CN106229937B
CN106229937B CN201610700332.XA CN201610700332A CN106229937B CN 106229937 B CN106229937 B CN 106229937B CN 201610700332 A CN201610700332 A CN 201610700332A CN 106229937 B CN106229937 B CN 106229937B
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China
Prior art keywords
current
electrical apparatus
toggle switch
intelligent electrical
apparatus release
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Application number
CN201610700332.XA
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Chinese (zh)
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CN106229937A (en
Inventor
陈浩
刘健勇
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Tianjin Baili Electronic Co Ltd
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Tianjin Baili Electronic Co Ltd
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Priority to CN201610700332.XA priority Critical patent/CN106229937B/en
Publication of CN106229937A publication Critical patent/CN106229937A/en
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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
    • H02H3/16—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 fault current to earth, frame or mass
    • H02H3/162—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 fault current to earth, frame or mass for ac systems
    • H02H3/165—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 fault current to earth, frame or mass for ac systems for three-phase systems
    • 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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The present invention relates to a kind of breakers having ground protection and creepage protection function concurrently.It includes 4 current transformers (CT1, CT2, CT3, CTN), 1 two-tap zero sequence transformer (CTZ)；Toggle switch (S1), resistance (R1, R2), button S2 and intelligent electrical apparatus release (CE).The switching of unlike signal is realized by the cooperation of toggle switch (S1) and two-tap zero sequence transformer (CTZ); after Data collecting conversion by intelligent electrical apparatus release (CE); it is protected, is grounded having both for protection and creepage protection function.Position of the present invention as a result of the dial-up S1 that linked by change; the free switching of creepage protection function and ground protection function can be realized; the production cost and user cost for reducing breaker disclosure satisfy that the demand that power supply system selects ground protection and earth leakage protective.

Description

Have the breaker of ground protection and creepage protection function concurrently
Technical field
The invention belongs to a kind of breakers, more particularly to a kind of open circuit having ground protection and creepage protection function concurrently Device.
Background technology
As electronic technology is widely used in rapidly in various fields, also there is intelligent circuit breaker in breaker, tool Standby overload long delay, short circuit short time-delay, short circuit is instantaneous, ground protection and earth leakage protective and other functions.Ground protection therein It is not existed simultaneously in same current breaker with creepage protection function, it is no ground if having creepage protection function Defencive function, if having ground protection function, no creepage protection function, when user needs to change defencive function, Zhi Nengxuan Select another purchase breaker.Manufacturer will produce the breaker of defencive function with ground and breaker with creepage protection function then It needs respectively to prepare corresponding parts inventory, increases production cost.Although tracing it to its cause as this two kinds of defencive function protections Principle is similar but its protection domain is different, has conflict from each other, two functions still may be implemented without the same device at present.
Invention content
The present invention provides one kind for technical problem present in solution known technology and may be implemented two with the same device The breaker for having ground protection and creepage protection function concurrently of a function.
The present invention is adopted the technical scheme that solve technical problem present in known technology：It includes major loop The first, second and third phase of three-phase alternating-current supply (L1, L2, L3), it is characterized in that：It further includes having the first, second and third alternating current mutual inductance Device (CT1, CT2, CT3), zero sequence current mutual inductor (CTZ), the first and second resistance (R1, R2), linkage toggle switch (S1), button (S2) and intelligent electrical apparatus release (CE)；First exchange for measuring the first phase of major loop three-phase alternating-current supply (L1) current value The secondary outlet side of current transformer (CT1) accesses on the intelligent electrical apparatus release (CE)；For measuring major loop three-phase alternating current The secondary outlet side of second AC current transformer (CT2) of source the second phase (L2) current value accesses the intelligent electrical apparatus release (CE) on；The third AC current transformer for measuring major loop three-phase alternating-current supply third phase (L3) current value (CT3) secondary outlet side accesses on the intelligent electrical apparatus release (CE)；While the zero of measuring system earth current and leakage current There are three taps for the secondary outlet side of sequence mutual inductor (CTZ), and respectively the first, second and third tap (Z1, Z2, Z3), described first takes out Head (Z1) is common end, and the intelligent electrical apparatus release (CE), second tap are accessed after connecing one end of the first resistor (R1) (Z2) it is electric leakage signal output end, connects No. 4 pin of the linkage toggle switch (S1), the third tap (Z3) is ground connection Signal output end connects No. 5 pin of the linkage toggle switch (S1)；No. 1 pin of the linkage toggle switch (S1) It connects the other end of the first resistor (R1) and then accesses the intelligent electrical apparatus release (CE), the of the linkage toggle switch (S1) No. 2 pins and No. 7 pin are respectively connected to the intelligent electrical apparatus release (CE)；No. 8 pin of the linkage toggle switch (S1) Lead-out wire around the zero sequence transformer (CTZ) two circle be followed by major loop LN；No. 3 pin of the linkage toggle switch (S1) Connect one end of the second resistance (R2)；One end of another termination button (S2) of the second resistance (R2)；It is described to press The L3 phases of another termination major loop of button (S2).
The present invention can also adopt the following technical scheme that：
It further includes having major loop three-phase alternating-current supply neutrality phase (LN), current transformer (CTN), the current transformer (CTN) secondary outlet side accesses on the intelligent electrical apparatus release (CE).
The invention has the advantages and positive effects that：As a result of the position for the dial-up S1 that linked by change, you can The free switching for realizing creepage protection function and ground protection function, largely reduces the production cost of breaker, energy It is enough greatly to meet the needs of power supply system selects ground protection and earth leakage protective, it is saved for opposite two kinds of breakers Material saving, simple in structure, convenient functional conversion have very strong practical advantages, realize a kind of ground protection and leakage well The breaker of electric protection functional unification.
Description of the drawings
Fig. 1 is the circuit diagram of the present invention.
Specific implementation mode
For that can further appreciate that present disclosure, feature and effect, the following examples are hereby given, and coordinates attached drawing detailed It is described as follows：
As shown in Figure 1：On the secondary outlet side access intelligent electrical apparatus release CE of Current Transmit 1；Current Transmit 2 On secondary outlet side access intelligent electrical apparatus release CE；Current Transmit) secondary outlet side access intelligent electrical apparatus release CE on；Zero sequence Mutual inductor CT) secondary outlet side there are three tap Z1, Z2, Z3, tap Z1 be common end, access intelligence behind one end of connecting resistance R1 Energy buckle releaser CE, tap Z2 are electric leakage signal output end, connect No. 4 pins of linkage toggle switch S1, and tap Z3 is ground signalling Output end connects No. 5 pins of linkage toggle switch S1；The other end of No. 1 pin connecting resistance R1 of linkage toggle switch S1 is then Intelligent electrical apparatus release CE is accessed, No. 2 pins and No. 7 pins of linkage toggle switch S1 are respectively connected to intelligent electrical apparatus release CE；Linkage is dialled The lead-out wire of No. 8 pins of code switch S1 is followed by major loop LN around the circles of zero sequence transformer CTZ two；No. 3 of linkage toggle switch S1 One end of pin connecting resistance R2；One end of another termination button S2 of resistance R2；The L3 phases of another termination major loop of button S2.
In addition on the secondary outlet side access intelligent electrical apparatus release CE of Current Transmit N.
The toggle switch S1 that links is three-group linkage toggle switch, and when breaker selects creepage protection function, linkage dial-up is opened It closes S1 and pushes position shown in attached drawing, No. 2 pins for the toggle switch S1 that links at this time and No. 7 pins disconnect, and indicate that breaker is current It selects to be creepage protection function；While No. 1 pin for the toggle switch S1 that links and No. 4 pins are connected, electric leakage signal inputs intelligence Energy buckle releaser CE, No. 3 pins of linkage toggle switch S1 and No. 8 pins are connected, and button S2 is detected as leakage function and used, when When button S2 is pressed, resistance R2 has been accessed between major loop L3 and LN, has generated an electric current, this electric current passes through zero sequence transformer CTZ generates a simulation leakage current, and whether the leakage function that can test breaker is normal；Intelligent electrical apparatus release CE can basis at this time The output signal of the electric leakage signal output end of main circuit current mutual inductor (CT1, CT2, CT3, CT4) and zero sequence transformer CTZ is surveyed Each electric current is measured, realizes overload long delay protection, short circuit short time-delay protection, short-circuit instantaneous protection and earth leakage protective；
When breaker selects creepage protection function, linkage toggle switch S1 pushes the opposite location of position shown in attached drawing, this No. 2 pins of Shi Liandong toggle switch S1 and No. 7 pins are connected, and indicate that breaker currently selects to be ground protection function；Together No. 1 pin of Shi Liandong toggle switch S1 and No. 5 pins are connected, and ground signalling inputs intelligent electrical apparatus release CE, and link toggle switch No. 3 pins of S1 and No. 8 pins disconnect, and button S2 is ineffective.Intelligent electrical apparatus release CE can be according to main circuit current mutual inductance at this time The output signal of the ground signalling output end of device (CT1, CT2, CT3, CT4) and zero sequence transformer CTZ measures each electric current, realizes Overload long delay protection, short circuit short time-delay protection, short-circuit instantaneous protection and ground protection.

Claims (2)

1. a kind of breaker having ground protection and creepage protection function concurrently, it include major loop three-phase alternating-current supply first, Two, three-phase (L1, L2, L3), it is characterized in that：It further includes having the first, second and third AC current transformer (CT1, CT2, CT3), and zero Sequence current transformer (CTZ), the first and second resistance (R1, R2), linkage toggle switch (S1), button (S2) and intelligent electrical apparatus release (CE)；First AC current transformer (CT1) for measuring the first phase of major loop three-phase alternating-current supply (L1) current value Secondary outlet side access on the intelligent electrical apparatus release (CE)；For measuring the second phase of major loop three-phase alternating-current supply (L2) electric current The secondary outlet side of second AC current transformer (CT2) of value accesses on the intelligent electrical apparatus release (CE)；For measuring The secondary outlet side of the third AC current transformer (CT3) of major loop three-phase alternating-current supply third phase (L3) current value connects Enter on the intelligent electrical apparatus release (CE)；The zero sequence transformer (CTZ) of measuring system earth current and leakage current is secondary simultaneously Outlet side is common end there are three tap, respectively the first, second and third tap (Z1, Z2, Z3), first tap (Z1), meets institute The intelligent electrical apparatus release (CE) is accessed after stating one end of first resistor (R1), second tap (Z2) exports for electric leakage signal End connects No. 4 pin of the linkage toggle switch (S1), and the third tap (Z3) is ground signalling output end, connects described No. 5 pin of linkage toggle switch (S1)；No. 1 pin of the linkage toggle switch (S1) connects the first resistor (R1) The other end then access the intelligent electrical apparatus release (CE), No. 2 pin and No. 7 pin of the linkage toggle switch (S1) It is respectively connected to the intelligent electrical apparatus release (CE)；The lead-out wire of No. 8 pin of the linkage toggle switch (S1) is around the zero sequence The circle of mutual inductor (CTZ) two is followed by major loop LN；No. 3 pin of the linkage toggle switch (S1) connects the second resistance (R2) One end；One end of another termination button (S2) of the second resistance (R2)；Another termination master of the button (S2) The L3 phases in circuit.
2. the breaker according to claim 1 for having ground protection and creepage protection function concurrently, it is characterised in that：It is also wrapped Included major loop three-phase alternating-current supply neutrality phase (LN), current transformer (CTN), the current transformer (CTN) it is secondary defeated Go out side to access on the intelligent electrical apparatus release (CE).
CN201610700332.XA 2016-08-19 2016-08-19 Have the breaker of ground protection and creepage protection function concurrently Active CN106229937B (en)

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CN106229937B true CN106229937B (en) 2018-08-21

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111864691B (en) * 2019-04-30 2023-04-28 上海复旦微电子集团股份有限公司 Ground fault protection circuit

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2596541Y (en) * 2003-02-09 2003-12-31 陈英钟 Intelligent multifunction breaker
JP2010040326A (en) * 2008-08-05 2010-02-18 Fuji Electric Fa Components & Systems Co Ltd Ground fault interrupter
CN101673931A (en) * 2009-09-09 2010-03-17 陶显芳 Ungrounded neutral three-phase electric leakage protection method
CN101847802A (en) * 2009-03-23 2010-09-29 陈华强 Electric leakage protection plug
CN201955971U (en) * 2010-12-31 2011-08-31 郑州万特电气有限公司 Simulation training system
CN202363868U (en) * 2011-11-24 2012-08-01 天津市百利电气有限公司 Intelligent low-voltage circuit breaker selective in grounding protection and electricity leakage protection functions
CN202663087U (en) * 2012-06-15 2013-01-09 深圳普鲁士特空压系统有限公司 Smart protector for motor
CN202997506U (en) * 2012-12-04 2013-06-12 广东佛电电器有限公司 A residual current protective device with a wide dynamic range
CN205986089U (en) * 2016-08-19 2017-02-22 天津市百利电气有限公司 Circuit breaker of ground protection and electric leakage protection function unification

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2596541Y (en) * 2003-02-09 2003-12-31 陈英钟 Intelligent multifunction breaker
JP2010040326A (en) * 2008-08-05 2010-02-18 Fuji Electric Fa Components & Systems Co Ltd Ground fault interrupter
CN101847802A (en) * 2009-03-23 2010-09-29 陈华强 Electric leakage protection plug
CN101673931A (en) * 2009-09-09 2010-03-17 陶显芳 Ungrounded neutral three-phase electric leakage protection method
CN201955971U (en) * 2010-12-31 2011-08-31 郑州万特电气有限公司 Simulation training system
CN202363868U (en) * 2011-11-24 2012-08-01 天津市百利电气有限公司 Intelligent low-voltage circuit breaker selective in grounding protection and electricity leakage protection functions
CN202663087U (en) * 2012-06-15 2013-01-09 深圳普鲁士特空压系统有限公司 Smart protector for motor
CN202997506U (en) * 2012-12-04 2013-06-12 广东佛电电器有限公司 A residual current protective device with a wide dynamic range
CN205986089U (en) * 2016-08-19 2017-02-22 天津市百利电气有限公司 Circuit breaker of ground protection and electric leakage protection function unification

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