CN208352961U - A kind of comprehensive protective circuit breaker - Google Patents

A kind of comprehensive protective circuit breaker Download PDF

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Publication number
CN208352961U
CN208352961U CN201820923864.4U CN201820923864U CN208352961U CN 208352961 U CN208352961 U CN 208352961U CN 201820923864 U CN201820923864 U CN 201820923864U CN 208352961 U CN208352961 U CN 208352961U
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CN
China
Prior art keywords
switch
leading
capacitor
out terminal
thermal protector
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Expired - Fee Related
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CN201820923864.4U
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Chinese (zh)
Inventor
穆杨
袁文桥
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Individual
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Individual
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Priority to CN201820923864.4U priority Critical patent/CN208352961U/en
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Abstract

The utility model relates to a kind of comprehensive protective circuit breakers, including first switch K1, second switch K2, third switch K3 and the 4th switch K4, inductance L1 is wound on the other end of Current Transmit, the leading-out terminal of a termination first switch K1 of inductance L1, another termination star connection central point D of inductance L1, first capacitor C1, second capacitor C2, one end of third capacitor C3 is in parallel, the other end of first capacitor C1 is connected with the leading-out terminal of the first thermal protector KS1, the other end of second capacitor C2 is connected with the leading-out terminal of the second thermal protector KS2, the other end of third capacitor C3 is connected with the leading-out terminal of third thermal protector KS3.The utility model increases the safety protection functions such as open-phase protection, wrong line protection, protection off zero and three-phase imbalance protection on the basis of three kinds of defencive functions of original breaker;The complete upgrading safety of breaker reduces the probability of power circuit kindling, to substantially reduce security risk from source.

Description

A kind of comprehensive protective circuit breaker
Technical field
The utility model relates to breaker technical field, especially a kind of comprehensive protective circuit breaker.
Background technique
With national basis construction it is improved day by day, the requirement for electric power safety is also increasingly being promoted, and breaker is A kind of switch of electrical equipment is widely used in industrial, civilian installation construction to protect electric power, and China generally uses disconnected at present Road device only has three kinds of short-circuit protection, overcurrent protection, earth leakage protective defencive functions, protect it is not comprehensive enough, there are larger security risk, Easily lead to fire so that burning electrical equipment.
Utility model content
The purpose of this utility model is to provide a kind of to increase disconnected phase on the basis of three kinds of defencive functions of original breaker The comprehensive protective circuit breaker of the safety protection functions such as protection, wrong line protection, protection off zero and three-phase imbalance protection.
To achieve the above object, the utility model is using following technical scheme: a kind of comprehensive protective circuit breaker, including the One switch K1, second switch K2, third switch K3 and the 4th switch K4, the inlet wire terminal connecting zero line N of the first switch K1, second The end of incoming cables of switch K2, third switch K3 and the 4th switch K4 connect A, B, C triple line respectively, and mechanical trip tripgear connects First switch K1, second switch K2, third switch K3 and the 4th switch K4 end of incoming cables on, second switch K2, third switch K3 With the leading-out terminal of the 4th switch K4 respectively with the first thermal protector KS1, the second thermal protector KS2, third thermal protector KS3 into Line end is connected, and Current Transmit is set in first switch K1, the first thermal protector KS1, the second thermal protector KS2, third heat On the leading-out terminal of protector KS3, inductance L2's is wrapped on one end of Current Transmit, and the two termination electronics of inductance L2 The input terminal of circuit is protected, the output end of electronic protection circuit is connected with the tripping breaking coil L3 of mechanical trip tripgear, The control terminal of electronic protection circuit is connected with the leading-out terminal of second switch K2, third switch K3 and the 4th switch K4, and feature exists In: inductance L1, the leading-out terminal of a termination first switch K1 of inductance L1, inductance are wound on the other end of the Current Transmit Another termination star connection central point D of L1, first capacitor C1, the second capacitor C2, one end of third capacitor C3 are in parallel, and this is simultaneously Connection termination star connection central point D, the other end of first capacitor C1 are connected with the leading-out terminal of the first thermal protector KS1, the second electricity The other end for holding C2 is connected with the leading-out terminal of the second thermal protector KS2, the other end and third thermal protector KS3 of third capacitor C3 Leading-out terminal be connected.
The outlet of the first switch K1, the first thermal protector KS1, the second thermal protector KS2, third thermal protector KS3 Hold the leading-out terminal as comprehensive protective circuit breaker.
The first switch K1, second switch K2, third switch K3 and the 4th switch K4 are using the open circuit of 4P earth leakage protective Device, first switch K1, second switch K2, third switch K3 and the 4th switch K4 are same to be opened with pass.
As shown from the above technical solution, utility model has the advantages that first, in three kinds of protection function of original breaker The safety protection functions such as open-phase protection, wrong line protection, protection off zero and three-phase imbalance protection are increased on the basis of energy;The Two, the complete upgrading safety of breaker reduces the probability of power circuit kindling from source, reduces civilian, commercial power The probability of equipment burnout, to substantially reduce security risk;Third, wide usage is strong, can directly upgrade existing old-fashioned breaker, Upgrading is convenient and cheap.
Detailed description of the invention
Fig. 1 is the breaker schematic diagram being commonly used;
Fig. 2 is the structural schematic diagram of the utility model.
Specific embodiment
As shown in Fig. 2, a kind of comprehensive protective circuit breaker, including first switch K1, second switch K2, third switch K3 and Inlet wire the terminal connecting zero line N, second switch K2 of four switch K4, the first switch K1, third switch K3 and the 4th switch K4 into Line end connects A, B, C triple line respectively, mechanical trip tripgear connect first switch K1, second switch K2, third switch K3 and On the end of incoming cables of 4th switch K4, the leading-out terminal of second switch K2, third switch K3 and the 4th switch K4 are protected with the first heat respectively Shield device KS1, the second thermal protector KS2, the end of incoming cables of third thermal protector KS3 are connected, and Current Transmit is set in first and opens On the leading-out terminal for closing K1, the first thermal protector KS1, the second thermal protector KS2, third thermal protector KS3, inductance L2's is wrapped in On one end of Current Transmit, and the input terminal of the two termination electronic protection circuits of inductance L2, the output of electronic protection circuit End is connected with the tripping breaking coil L3 of mechanical trip tripgear, the control terminal of electronic protection circuit and second switch K2, the The leading-out terminal of three switch K3 and the 4th switch K4 is connected, and inductance L1, inductance L1 are wound on the other end of the Current Transmit One termination first switch K1 leading-out terminal, another termination star connection central point D of inductance L1, first capacitor C1, second electricity It is in parallel to hold C2, one end of third capacitor C3, and parallel end connection star connection central point D, the other end of first capacitor C1 and the The leading-out terminal of one thermal protector KS1 is connected, and the other end of the second capacitor C2 is connected with the leading-out terminal of the second thermal protector KS2, the The other end of three capacitor C3 is connected with the leading-out terminal of third thermal protector KS3.
As shown in Fig. 2, the first switch K1, the first thermal protector KS1, the second thermal protector KS2, third thermal protector Leading-out terminal of the leading-out terminal of KS3 as comprehensive protective circuit breaker.The first switch K1, second switch K2, third switch K3 and 4th switch K4 uses 4P earth leakage circuit breaker, and first switch K1, second switch K2, third switch K3 and the 4th switch K4 are same It opens with pass.
The breaker schematic diagram that existing China generally uses, as shown in Figure 1, being realized its working principle is that being threaded off using electromagnetic type Short-circuit protection is threaded off using electrothermal and realizes overcurrent protection, detects that the leakage current in circuit drives by zero sequence transformer Electromagnetic and mechanical threads off tripgear to realize earth leakage protective.
First capacitor C1, the second capacitor C2, third capacitor C3 are increased on the utility model circuit base shown in Fig. 1 With inductance L1, four main components realize low cost, and high reliability protects comprehensive practical circuit, and working principle is explained It states as follows:
In ABC three-phase, first capacitor C1, the second capacitor C2, third capacitor C3 capacitor are connected in a manner of star connection, In the case where three-phase normal equilibrium, star connection central point D is neutrality without current potential.
In the normal situation of power supply, star connection central point D is equal with the current potential of zero curve N in the present invention, at this moment inductance Electric current useless passes through in the winding of L1, and electronic protection circuit does not work.When power supply occurs abnormal, star connection central point D or The current potential of zero curve N generates variation, has electric current in the coil of inductance L1, is incuded by Current Transmit to inductance L2 and triggers electricity Son protection circuit work, tripping breaking coil L3 are powered, and mechanical trip tripgear is driven to make out first switch K1, second switch K2, third switch K3 and the 4th switch K4 tripping.
Four kinds of protection philosophies are analyzed as follows:
One, open-phase protection: when a phase any in A, B, C three-phase breaks, the current potential of star connection central point D will be risen Height will have electric current to pass through in inductance L1 winding at this time, and be incuded by Current Transmit into inductance L2 winding, inductance L2 around Electric current in group will be admitted to electronic protection circuit, and tripping breaking coil L3 is powered, and mechanical trip tripgear is driven to make out the One switch K1, second switch K2, third switch K3 and the 4th switch K4 tripping.
Two, wrong line protection: as zero curve N and phase line misconnection, zero line side current potential is increased, and will be had in inductance L1 winding at this time Electric current passes through, and is incuded by Current Transmit into inductance L2 winding, and the electric current in inductance L2 winding will be admitted to electronics Circuit is protected, tripping breaking coil L3 is powered, and mechanical trip tripgear is driven to make out first switch K1, second switch K2, the Three switch K3 and the 4th switch K4 tripping.
Three, protection off zero: N disconnect when, due to the electric current of load end be it is unbalanced, lead to this comprehensive protective circuit breaker Zero curve current potential in leading-out terminal also increases.There to be electric current to pass through in inductance L1 winding at this time, and pass through Current Transmit Into inductance L2 winding, the electric current in inductance L2 winding will be admitted to electronic protection circuit for induction, and tripping breaking coil L3 is powered, Mechanical trip tripgear is driven to make out first switch K1, second switch K2, third switch K3 and the 4th switch K4 tripping.
Four, three-phase imbalance is protected: when three phase mains imbalance, the current potential of star connection central point D is increased, electric at this time There to be electric current to pass through in sense L1 winding, and be incuded by Current Transmit into inductance L2 winding, the electricity in inductance L2 winding Stream will be admitted to electronic protection circuit, and tripping breaking coil L3 is powered, drive mechanical trip tripgear make out first switch K1, Second switch K2, third switch K3 and the 4th switch K4 tripping.
In conclusion the utility model increased on the basis of three kinds of defencive functions of original breaker open-phase protection, The safety protection functions such as wrong line protection, protection off zero and three-phase imbalance protection;The complete upgrading safety of breaker, from source The probability that power circuit kindling is reduced on head, reduces civilian, the probability that industrial electricity apparatus is burnt, so that it is hidden to substantially reduce safety Suffer from.

Claims (3)

1. a kind of comprehensive protective circuit breaker, including first switch K1, second switch K2, third switch K3 and the 4th switch K4, institute State the inlet wire terminal connecting zero line N of first switch K1, the end of incoming cables of second switch K2, third switch K3 and the 4th switch K4 connect respectively A, B, C triple line, mechanical trip tripgear connect in first switch K1, second switch K2, third switch K3 and the 4th switch K4 On end of incoming cables, the leading-out terminal of second switch K2, third switch K3 and the 4th switch K4 respectively with the first thermal protector KS1, second Thermal protector KS2, the end of incoming cables of third thermal protector KS3 are connected, and Current Transmit is set in first switch K1, the first heat is protected It protects on the leading-out terminal of device KS1, the second thermal protector KS2, third thermal protector KS3, inductance L2's is wrapped in Current Transmit One end on, and inductance L2 two termination electronic protection circuits input terminal, the output end and mechanical trip of electronic protection circuit The tripping breaking coil L3 of tripgear is connected, the control terminal and second switch K2, third switch K3 of electronic protection circuit and the The leading-out terminal of four switch K4 is connected, it is characterised in that: inductance L1 is wound on the other end of the Current Transmit, inductance L1's The leading-out terminal of one termination first switch K1, another termination star connection central point D, first capacitor C1, the second capacitor of inductance L1 C2, one end of third capacitor C3 are in parallel, and parallel end connection star connection central point D, the other end of first capacitor C1 and first The leading-out terminal of thermal protector KS1 is connected, and the other end of the second capacitor C2 is connected with the leading-out terminal of the second thermal protector KS2, third The other end of capacitor C3 is connected with the leading-out terminal of third thermal protector KS3.
2. comprehensive protective circuit breaker according to claim 1, it is characterised in that: the first switch K1, the first Thermal protection Leading-out terminal of the leading-out terminal as comprehensive protective circuit breaker of device KS1, the second thermal protector KS2, third thermal protector KS3.
3. comprehensive protective circuit breaker according to claim 1, it is characterised in that: the first switch K1, second switch K2, Third switch K3 and the 4th switch K4 use 4P earth leakage circuit breaker, first switch K1, second switch K2, third switch K3 and 4th switch K4 is same to be opened with pass.
CN201820923864.4U 2018-06-14 2018-06-14 A kind of comprehensive protective circuit breaker Expired - Fee Related CN208352961U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820923864.4U CN208352961U (en) 2018-06-14 2018-06-14 A kind of comprehensive protective circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820923864.4U CN208352961U (en) 2018-06-14 2018-06-14 A kind of comprehensive protective circuit breaker

Publications (1)

Publication Number Publication Date
CN208352961U true CN208352961U (en) 2019-01-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112018723A (en) * 2020-10-14 2020-12-01 四川航天职业技术学院(四川航天高级技工学校) Phase-failure protector
CN112650081A (en) * 2020-11-27 2021-04-13 浙江海普发科技有限公司 Intelligent circuit breaker with wiring safety analysis function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112018723A (en) * 2020-10-14 2020-12-01 四川航天职业技术学院(四川航天高级技工学校) Phase-failure protector
CN112650081A (en) * 2020-11-27 2021-04-13 浙江海普发科技有限公司 Intelligent circuit breaker with wiring safety analysis function
CN112650081B (en) * 2020-11-27 2022-04-29 浙江海普发科技有限公司 Intelligent circuit breaker with wiring safety analysis function

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Granted publication date: 20190108