CN201725755U - Molded case circuit breaker with residual current protection - Google Patents

Molded case circuit breaker with residual current protection Download PDF

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Publication number
CN201725755U
CN201725755U CN2010201915397U CN201020191539U CN201725755U CN 201725755 U CN201725755 U CN 201725755U CN 2010201915397 U CN2010201915397 U CN 2010201915397U CN 201020191539 U CN201020191539 U CN 201020191539U CN 201725755 U CN201725755 U CN 201725755U
Authority
CN
China
Prior art keywords
residual current
module group
extinguishing module
group
circuit breaker
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
Application number
CN2010201915397U
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Chinese (zh)
Inventor
赵轶磊
过孝刚
张国荣
冯宪辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PEOPLE'S ELECTRICAL APPLIANCE FACTORY SHANGHAI ELECTRICAL APPLIANCE CO Ltd
Original Assignee
PEOPLE'S ELECTRICAL APPLIANCE FACTORY SHANGHAI ELECTRICAL APPLIANCE CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PEOPLE'S ELECTRICAL APPLIANCE FACTORY SHANGHAI ELECTRICAL APPLIANCE CO Ltd filed Critical PEOPLE'S ELECTRICAL APPLIANCE FACTORY SHANGHAI ELECTRICAL APPLIANCE CO Ltd
Priority to CN2010201915397U priority Critical patent/CN201725755U/en
Application granted granted Critical
Publication of CN201725755U publication Critical patent/CN201725755U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a molded case circuit breaker with residual current protection, which comprises a base, a contact terminal arc extinguishing module group, an actuating mechanism, a residual current release, a cover component, a partition board, a thermomagnetic release group, an insulating piece, a zero sequence current transformer and a leakage control component, wherein the contact terminal arc extinguishing module group is fixed on the base, the actuating mechanism is fixed on the base and the contact terminal arc extinguishing module group, the residual current release is mounted on the contact terminal arc extinguishing module group and is connected with the leakage control component via a lead wire, the phases of the thermomagnetic release group are arranged on the contact terminal arc extinguishing module group and the base via a zero sequence current transformer, the leakage control component is arranged between the thermomagnetic release group and the zero sequence current transformer, the electrical conductor of the leakage control component is respectively connected with three phases of the thermomagnetic release group, and the cover component is mounted on the base. Compared with the prior art, the utility model has the advantages of reasonable structure, small volume, safety, reliability, convenient installation, etc.

Description

A kind of band residual current protecting moulded case circuit breaker
Technical field
The utility model relates to a kind of circuit breaker, especially relates to a kind of band residual current protecting moulded case circuit breaker.
Background technology
A kind of band residual current protecting moulded case circuit breaker (being called for short CBR), its operation principle is when system's generation leak current fault, passes the vector of zero sequence current mutual inductor and is not equal to zero, detects leakage current (I from CBR Δ), as leakage current (I Δ) when reaching the residual operating current setting value of CBR, the rapid action power dump protection circuit of residual current release.
At present, CBR roughly has two kinds of forms: a kind of is integral type CBR, and promptly the residual current protecting function all is incorporated into breaker of plastic casing inside; Another kind is split type CBR (as Fig. 5), and leakage function is made independent residual current protecting module N, and when needs residual current protecting function, the module of will leaking electricity is installed on common breaker of plastic casing M leading-out terminal, plays earth leakage protective function.Integral type CBR on the market generally is the structure of single-break, and short circuit breaking capacity is not really high, but after leakage function was incorporated into circuit breaker inside, the volume ratio of CBR breaker of plastic casing volume less and respective shell frame grade was basic identical.Along with the development of breaker of plastic casing in recent years, more and more higher to the short circuit breaking performance requirement of breaker of plastic casing, breaker of plastic casing of new generation generally all is the structure of rotating dual-breakpoint, with respect to the structure of single-break higher short circuit breaking capacity is arranged.But the breaker of plastic casing internal structure compactness of double break point; so the leakage function modularization, make the residual current protecting module separately, be installed in the leading-out terminal of breaker of plastic casing during use; play the function of residual current protecting, but whole split type CBR length increases obviously after the external electric leakage module.Two kinds of present forms temporarily can not satisfy has relatively high expectations simultaneously again to the CBR volume user that has certain requirements to the CBR short circuit breaking capacity.
Summary of the invention
The purpose of this utility model is exactly that a kind of rational in infrastructure, volume compact, band residual current protecting moulded case circuit breaker safe and reliable, easy for installation are provided in order to overcome the defective that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of band residual current protecting moulded case circuit breaker; it is characterized in that; this device comprises pedestal; contact arc-extinguishing module group; operating mechanism; the residual current release; cap assemblies; dividing plate; thermo magnetic trip release device group; insulating part; zero sequence current mutual inductor; the electric leakage control assembly; described contact arc-extinguishing module group is fixed on the pedestal; described operating mechanism is fixed on pedestal and the contact arc-extinguishing module group; described residual current release is installed on the contact arc-extinguishing module group; be connected with the electric leakage control assembly by lead; described dividing plate is installed between pedestal and the contact arc-extinguishing module group; the zero sequence current mutual inductor that respectively communicated of described thermo magnetic trip release device group is located on contact arc-extinguishing module group and the pedestal; described insulating part is inserted in the hole of zero sequence current mutual inductor; with respectively isolating mutually of thermo magnetic trip release device group; described electric leakage control assembly is located between thermo magnetic trip release device group and the zero sequence current mutual inductor; the power taking lead of described electric leakage control assembly is connected with three of thermo magnetic trip release device group respectively; described cap assemblies is installed on the pedestal, forms enclosure space.
Described operating mechanism comprises rotor, trip shaft, and described rotor is provided with and touches bridge, and described trip shaft is connected with the residual current release.
Described operating mechanism is provided with handle, pulls this handle and drives the residual current release and reset.
Described cap assemblies comprises the part middle cover.
Cover in the described part and be provided with 4 holes and pit.
Compared with prior art; the utility model has been realized leakage function is incorporated in the breaker of plastic casing of revolving double breakpoints structure; its agent structure adopts the form of rotating dual-breakpoint; and realize that the residual current protecting function need not external electric leakage module; volume does not obviously increase; thereby realized a kind of integral type CBR of revolving double breakpoints structure of rational in infrastructure, volume compact; has the saving space; safe and reliable; characteristics easy for installation have satisfied the CBR short circuit breaking capacity have been had relatively high expectations simultaneously again to have certain requirements user's demand of CBR volume.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a structural representation explosive view of the present utility model;
Fig. 3 is an intraware structural representation of the present utility model;
Fig. 4 is an interior section assembly schematic diagram of the present utility model;
Fig. 5 is the structural representation of existing split type CBR;
Fig. 6 is a diaphragm structure schematic diagram of the present utility model;
Fig. 7 is an insulating part structural representation of the present utility model;
Fig. 8 is a middle cover structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As Fig. 1; Fig. 2; shown in Figure 3; a kind of band residual current protecting moulded case circuit breaker; this device comprises pedestal 5; contact arc-extinguishing module group 4; operating mechanism 2; residual current release 3; cap assemblies 1; dividing plate 6; thermo magnetic trip release device group 7; insulating part 8; zero sequence current mutual inductor 9; electric leakage control assembly 10; described contact arc-extinguishing module group 4 is fixed on the pedestal 5; described operating mechanism is fixed on pedestal 5 and the contact arc-extinguishing module group 4; described residual current release 3 is installed on the contact arc-extinguishing module group 4; be connected with electric leakage control assembly 10 by lead; described dividing plate is installed between pedestal 5 and the contact arc-extinguishing module group 4; the zero sequence current mutual inductor that respectively communicated of described thermo magnetic trip release device group 7 is located on contact arc-extinguishing module group 4 and the pedestal 5; described insulating part 8 is inserted in the hole of zero sequence current mutual inductor 9; with respectively isolating mutually of thermo magnetic trip release device group 7; described electric leakage control assembly 10 is located between thermo magnetic trip release device group 7 and the zero sequence current mutual inductor 9; the power taking lead of described electric leakage control assembly 10 respectively with the A of thermo magnetic trip release device group 7; B; C three is connected; described cap assemblies 1 is installed on the pedestal 5, forms enclosure space.
The agent structure of circuit breaker is the form of rotating dual-breakpoint, and promptly the every bridge 2-1-1 that touches mutually among the rotor 2-1 of operating mechanism 2 has former and later two contacts, also has corresponding former and later two contacts in the contact arc-extinguishing module group 4 in each phase module.Circuit breaker relies on the rotation of operating mechanism 2 control rotor 2-1 to connect or the rear and front end of break contact arc extinguishing module group 4.Wherein operating mechanism 2 is fixed on pedestal 5 and the contact arc-extinguishing module group 4, can pass through operating grip, and operating mechanism 2 is closed a floodgate, separating brake, the conversion of three states of threading off.When residual current release 3 during in normal combined floodgate operating state, the rotor 2-1 in the operating mechanism 2 of revolving double breakpoints structure goes up the fixed contact that bridge 2-1-1 is communicated with the fast rear and front end of mould of corresponding phase in the contact arc-extinguishing module group 4 that touches of each phase.The thermo magnetic trip release device of thermo magnetic trip release device group 7 corresponding phases is fixed on contact arc-extinguishing module group 4 and goes up mutually accordingly.Electric current is by the CBR end of incoming cables when this state, by the fixed contact of contact arc-extinguishing module group 4 front ends, through operating mechanism 2 touch bridge 2-1-1, flow into the fixed contact of contact arc-extinguishing module group 4 rear ends, arrive the CBR leading-out terminal accordingly mutually through thermo magnetic trip release device group 7 then, make system's conducting.Wherein zero sequence current mutual inductor 9 is passed mutually by each of thermo magnetic trip release device group 7, when system's generation leak current fault, passes the current phasor of zero sequence current mutual inductor 9 and is not equal to zero, thereby detect leakage current I ΔZero sequence current mutual inductor 9 passes to this sample information and is installed in the electric leakage control assembly 10 in the space between thermo magnetic trip release device group 7 and the zero sequence current mutual inductor 9, analyzes through electric leakage control assembly 10, if leakage current I ΔWhen reaching the residual operating current setting value of CBR; electric leakage control assembly 10 sends signal; make the residual current release 3 of a certain phase mould that is installed in contact arc-extinguishing module group 4 on fast carry out mechanical actions rapidly; trip shaft 2-2 in the pull operation mechanism 2; thereby operating mechanism 2 is threaded off; the fixed contact of bridge 2-1-1 breaking-off contact arc extinguishing module group 4 rear and front ends is touched in rotor 2-1 upset, reaches the purpose of the protection circuit of cutting off the electricity supply.When the system leak current fault is removed, pull the handle of operating mechanism 2, mechanism is detained again, drive residual current release 3 simultaneously and reset, and then can make the CBR operate as normal of closing a floodgate once more.
As shown in Figure 6, dividing plate 6 is contained in the pedestal 5, can effectively stop the electric arc of ejection from contact arc-extinguishing module group 4 when CBR runs into breaking current, avoids electric arc to be sprayed onto on zero sequence current mutual inductor 9 and the electric leakage control assembly 10.Simultaneously also can be for playing the insulation protection effect between thermo magnetic trip release device group 7 each phase.
As shown in Figure 7, insulating part 8 is inserted in the hole in the zero sequence current mutual inductor 9, can play insulating effect between mutually for each of the thermo magnetic trip release device group 7 of passing zero sequence current mutual inductor 9.
As shown in Figure 8, cap assemblies 1 is installed on the pedestal 5 in this structure, and the part middle cover 11 in the cap assemblies 1 has 4 holes 12, can regulate the electric leakage parameter of residual current release 3 by these holes, or reflection electric leakage indicating status.Middle cover 11 has pit 13 simultaneously, is used for installing the modular contents of CBR.

Claims (5)

1. be with the residual current protecting moulded case circuit breaker for one kind; it is characterized in that; this device comprises pedestal (5); contact arc-extinguishing module group (4); operating mechanism (2); residual current release (3); cap assemblies (1); dividing plate (6); thermo magnetic trip release device group (7); insulating part (8); zero sequence current mutual inductor (9); electric leakage control assembly (10); described contact arc-extinguishing module group (4) is fixed on the pedestal (5); described operating mechanism is fixed on pedestal (5) and the contact arc-extinguishing module group (4); described residual current release (3) is installed on the contact arc-extinguishing module group (4); be connected with electric leakage control assembly (10) by lead; described dividing plate is installed between pedestal (5) and the contact arc-extinguishing module group (4); the zero sequence current mutual inductor that respectively communicated of described thermo magnetic trip release device group (7) is located on contact arc-extinguishing module group (4) and the pedestal (5); described insulating part (8) is inserted in the hole of zero sequence current mutual inductor (9); with respectively isolating mutually of thermo magnetic trip release device group (7); described electric leakage control assembly (10) is located between thermo magnetic trip release device group (7) and the zero sequence current mutual inductor (9); the power taking lead of described electric leakage control assembly (10) is connected with three of thermo magnetic trip release device group (7) respectively, and described cap assemblies (1) is installed on the pedestal (5).
2. a kind of band residual current protecting moulded case circuit breaker according to claim 1; it is characterized in that; described operating mechanism (2) comprises rotor, trip shaft, and described rotor is provided with and touches bridge, and described trip shaft is connected with residual current release (3).
3. a kind of band residual current protecting moulded case circuit breaker according to claim 1 is characterized in that described operating mechanism (2) is provided with handle.
4. a kind of band residual current protecting moulded case circuit breaker according to claim 1 is characterized in that described cap assemblies (1) comprises part middle cover (11).
5. a kind of band residual current protecting moulded case circuit breaker according to claim 4 is characterized in that described part middle cover (11) is provided with 4 holes (12) and pit (13).
CN2010201915397U 2010-05-13 2010-05-13 Molded case circuit breaker with residual current protection Expired - Fee Related CN201725755U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201915397U CN201725755U (en) 2010-05-13 2010-05-13 Molded case circuit breaker with residual current protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201915397U CN201725755U (en) 2010-05-13 2010-05-13 Molded case circuit breaker with residual current protection

Publications (1)

Publication Number Publication Date
CN201725755U true CN201725755U (en) 2011-01-26

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102243957A (en) * 2010-05-13 2011-11-16 上海电器股份有限公司人民电器厂 Moulded case circuit breaker with residual current protection
CN102299026A (en) * 2011-08-09 2011-12-28 无锡新宏泰电器科技股份有限公司 Plastic shell breaker modularization housing
CN106128869A (en) * 2016-08-19 2016-11-16 天津市百利电气有限公司 There is the quadrupole moulded case circuit breaker of creepage protection function
CN107393782A (en) * 2017-08-14 2017-11-24 国家电网公司 Primary cut-out

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102243957A (en) * 2010-05-13 2011-11-16 上海电器股份有限公司人民电器厂 Moulded case circuit breaker with residual current protection
CN102243957B (en) * 2010-05-13 2013-11-27 上海电器股份有限公司人民电器厂 Moulded case circuit breaker with residual current protection
CN102299026A (en) * 2011-08-09 2011-12-28 无锡新宏泰电器科技股份有限公司 Plastic shell breaker modularization housing
CN102299026B (en) * 2011-08-09 2016-04-27 无锡新宏泰电器科技股份有限公司 The Modularized shell of breaker of plastic casing
CN106128869A (en) * 2016-08-19 2016-11-16 天津市百利电气有限公司 There is the quadrupole moulded case circuit breaker of creepage protection function
CN107393782A (en) * 2017-08-14 2017-11-24 国家电网公司 Primary cut-out

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110126

Termination date: 20140513