CN105448617A - Low voltage circuit breaker - Google Patents

Low voltage circuit breaker Download PDF

Info

Publication number
CN105448617A
CN105448617A CN201510594215.5A CN201510594215A CN105448617A CN 105448617 A CN105448617 A CN 105448617A CN 201510594215 A CN201510594215 A CN 201510594215A CN 105448617 A CN105448617 A CN 105448617A
Authority
CN
China
Prior art keywords
circuit breaker
low
voltage circuit
recognition unit
interference arc
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.)
Pending
Application number
CN201510594215.5A
Other languages
Chinese (zh)
Inventor
M.阿德尔霍克
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to CN202011194842.7A priority Critical patent/CN112614749A/en
Publication of CN105448617A publication Critical patent/CN105448617A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/50—Means for detecting the presence of an arc or discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H2083/201—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other abnormal electrical condition being an arc fault

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  • Breakers (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

In order to interrupt at least one circuit, a low voltage circuit breaker has a trigger input, so that at least one circuit is interrupted. The trigger input end is connected to an interference arc detection unit. When interference arc appears in at least one circuit, the interference arc detection unit identifies the interference arc and outputs a trigger signal to an output end thereof. The output end leads to the trigger input end of the low voltage circuit breaker so that the low voltage circuit breaker can interrupt the at least one circuit.

Description

Low-voltage circuit breaker
Technical field
The present invention relates to a kind of low-voltage circuit breaker.
Background technology
Circuit breaker is special switch, and it designed to be used and switches high electric current.Circuit breaker not only can switchover operation electric current and low overload current, but also can switch high overload current or short circuit current when fault, fault current is kept a scheduled time in addition and safe shutdown.Exist and there is the circuit breaker of different number of poles, such as one pole, bipolar, three poles or four poles.
From the angle being used as simple switch element, circuit breaker is used as protection component during fault, and fault is such as short circuit, overcurrent or ground connection.At this, switch refers to low tension switch or low-voltage circuit breaker, and it is usually designed to be used in until the working voltage of 1000 volts, maximum 2000 volts.Such as until the alternating voltage of 1000 volts or the direct voltage of 1500 volts.Circuit breaker is normally used for from 100 amperes until the electric current of 10000 amperes.Special circuit breaker is used for from 63 amperes or electric current from 125 amperes.
Circuit breaker, such as compact circuit breaker molded shell-type circuit-breaker, open circuit breaker air loop circuit breaker in other words in other words, is used in the different electricity generating layer of power distribution network, such as main distribution net, sub-power distribution network etc.
Summary of the invention
The technical problem to be solved in the present invention is, improves a kind of low-voltage circuit breaker.
This technical problem is solved by the circuit breaker with feature of the present invention.
According to the present invention, expand low-voltage circuit breaker with interference arc recognition unit, thus also trigger or breaking circuit when there is interference arc in circuit.In this core of the present invention be, interference arc recognition unit is integrated into have circuit breaker system combined in.The serial of appearance and/or parallel interference arc can be gathered thus, and in conjunction with compact circuit breaker interrupt circuit.This advantage had is, makes low-voltage circuit breaker extend other function.
In construction and installation, due to insulation fault, damage, wire fracture and/or loosening tactilely all can form electric arc.These electric arcs can cause fire.These electric arcs are called as interference arc here.Alternatively also referred to as fault electric arc.That is, interference arc recognition unit refers to the unit identifying the electric arc caused due to insulation fault, damage, wire fracture and/or loosening tactile company.At this, this electric arc can as so-called serial electric arc, namely occur in series circuit.In addition, can also as so-called parallel electric arc, namely occur between two wires of circuit.
The electric arc such as occurred due to switching process in normal operation circuit especially is not included in term interference arc.These electric arcs should not gathered by interference arc recognition unit.
This interference arc recognition unit is called as arc fault detection device (ArcFaultDetectionDevice) according to English, abbreviation AFDD, Arc Fault Circuit Interrupter (ArcFaultCircuitInterrupter) is called as, abbreviation AFCI in North American region.In addition, interference arc in other words fault electric arc recognition unit be also referred to as fule shut-off valve.
Preferable configuration of the present invention provides in the dependent claims.
In a kind of preferable configuration of the present invention, interference arc recognition unit is implemented as the module that can be added on low-voltage circuit breaker.This special advantage had is, utilizes it to be that existing circuit breaker expands new function.
In a kind of preferable configuration of the present invention, interference arc recognition unit is implemented as the module that can be embedded in the housing of low-voltage circuit breaker.This special advantage had it is possible to replace other module and in circuit breaker, install interference arc module, and provides new function thus.
In a kind of preferable configuration of the present invention, interference arc recognition unit is integrated in the housing of low-voltage circuit breaker.That is, circuit breaker comprises interference arc recognition unit.Thus, circuit breaker has other function, and this is advantageously applicable to the market demand.
In a kind of preferable configuration of the present invention, interference arc recognition unit is coupled with fault current recognition unit.This special advantage had it is possible to realize compact unit, and it not only gathers fault current but also gather interference arc, and wherein functional block can be used collectively.
Accompanying drawing explanation
Embodiments of the invention shown in the drawings, and following, it is explained in detail.Wherein:
Fig. 1 shows the schematic diagram of the low-voltage circuit breaker with interference arc module;
Fig. 2 shows the schematic diagram of the low-voltage circuit breaker with interference arc and fault current module;
Fig. 3 shows the low-voltage circuit breaker with integrated interference arc module.
Embodiment
Fig. 1 shows low-voltage circuit breaker MCCB, its multiple circuit that can interrupt a circuit or have electric lead N, L1, L2, L3.Contact system K is used to interrupt.Low-voltage circuit breaker has trigger input E.If apply triggering signal at this trigger input, then interrupt electric lead N, L1, L2, L3 by contact system K, i.e. open circuit.This is also referred to as and triggers or turn off circuit breaker.Connect the output of interference arc recognition unit AFD at trigger input E, this interference arc recognition unit can export triggering signal at output.Interference arc recognition unit AFD has one or more transducer, such as first sensor I, the second transducer HF, and has control device MCU and power ps.Unshowned 3rd transducer U can also be had.
First sensor I is used to the electric current determining circuit.Second transducer HF is used to the HF frequency spectrum determining circuit.3rd transducer U is used to the voltage determining circuit.In multiphase current system, preferably use at least 2 in described 3 transducers.Control device MCU is used to control interference arc recognition unit AFD.It is constructed to, can interference arc on the interference arc of Acquisition Circuit or electric lead.Such as interference arc can be detected having in the circuit of electric lead N, L1, L2, L3 of being carried by low-voltage circuit breaker MCCB.If detect in circuit and recognize this interference arc, then interference arc recognition unit AFD exports corresponding signal or triggering signal in its output terminals A, its by low-voltage circuit breaker MCCB its input E receive and then by contact system K interrupt circuit.Interference arc recognition unit can be constructed to interference arc module according to Fig. 1, and it is connected with circuit breaker MCCB through electric lead.Alternatively, also can be configured to, interference arc recognition unit can be added on circuit breaker MCCB.
Layout shown in Fig. 2 and Fig. 1 have following difference, that is, interference arc recognition unit AFD comprises fault current recognition unit or fault current module RCD.It is such as the combination of fault current recognition unit and interference arc recognition unit.That is, module RCD/AFD is utilized not only can to identify fault current but also can interference arc be identified.When there is one of them, export corresponding signal/triggering signal to low-voltage circuit breaker MCCB, this low-voltage circuit breaker interrupt circuit when being applied with triggering signal.In the example in figure 2, interference arc recognition unit AFD or interference arc and fault current recognition unit RCD/AFD can be added on circuit breaker MCCB.
Layout shown in Fig. 3 and Fig. 1 have following difference, that is, interference arc recognition unit AFD is integrated in low-voltage circuit breaker MCCB.Alternatively, integrated interference arc recognition unit can be disassembled, thus it can be embedded in circuit breaker MCCB alternatively as required.In another kind distortion, interference arc recognition unit also can be fixedly installed in circuit breaker MCCB.
Below again the present invention is described in detail.Circuit breaker is partly provided for the add-on module of difference in functionality.According to the present invention, advise by interference arc recognition unit introduce have low-voltage circuit breaker system combined in.Serial and/or parallel interference arc can be gathered by middle ground with this.Alternatively, can gather in conjunction with other interference arc recognition unit and identify interference arc, and therefore breaking circuit to protect electrical network.This such as can realize in different main distribution nets and/or sub-power distribution network.At this, interference arc recognition unit can be disposed near low-voltage circuit breaker, be arranged in equipment or in a device integrated, or arranges away from low-voltage circuit breaker.In addition, be arranged in main power feed side or central authorities or the interference arc recognition unit that arranges of higher level in other words fault electric arc protection module can have the selectivity of the fault electric arc protection module relative to the sub-power distribution network in rear setting.Selectivity refers to the protected location identifying or trigger next-door neighbour's fault.That is, distance fault, namely identified fault electric arc is near as far as possible, should by the protected location of there, i.e. interference arc recognition unit identification fault, and there by the low-voltage circuit breaker interrupt circuit of correspondence.Thus, when there is interference arc in sub-power distribution network, should not trigger and be positioned at central or that higher level is arranged fault electric arc protection module.This selective protection can be called as basic protection and supplementary protection.
In addition, interference arc identification module can by integrated and be incorporated into system combined in, such as connected by bus.In system combined, such as, by the transfer of data of the data of low-voltage circuit breaker and interference arc recognition unit or watch-dog can be sent to.At this, interference arc recognition unit and/or low-voltage circuit breaker are connected with watch-dog, such as, be connected with central computer.Can show or notify the information about triggering at this.In addition, operational factor can be shown.Such as Remote triggering can also be carried out.
Interference arc recognition unit can:
A) functional module of standalone module formula is configured to;
B) be integrated in other unit as functional module, such as, be integrated in fault current recognition unit;
C) be directly integrated in low-voltage circuit breaker as functional module;
D) as low-voltage circuit breaker expansion module and realize with card module form.
In system combined, before or after interference arc being detected, can show by light-emitting diode, display, control and notice line in the same manner.In addition can display measurement value and diagnostic procedure data.The connection of low-voltage circuit breaker, interference arc module and/or watch-dog can by such as to trigger and the wire of Remote triggering line, notice input or output carry out.
Of the present invention other structure in, interference arc module can with the electronic trigger unit of low-voltage circuit breaker in other words electronic trip unit be connected.

Claims (17)

1. one kind for interrupting the low-voltage circuit breaker of at least one circuit, there is trigger input, described low-voltage circuit breaker can be triggered by described trigger input, thus interrupt at least one circuit, it is characterized in that, described trigger input is connected with interference arc recognition unit, when there is interference arc at least one circuit, described interference arc recognition unit identifies this interference arc and triggering signal is outputted to its output, described output leads to the trigger input of described low-voltage circuit breaker, thus make described low-voltage circuit breaker interrupt at least one circuit described.
2. according to low-voltage circuit breaker according to claim 1, it is characterized in that, described interference arc recognition unit is implemented as the module can added on described low-voltage circuit breaker.
3. according to the low-voltage circuit breaker described in claim 1 or 2, it is characterized in that, described interference arc recognition unit is implemented as the module in the housing that can embed described low-voltage circuit breaker.
4. according to the low-voltage circuit breaker according to any one of the claims, it is characterized in that, described interference arc recognition unit is integrated in the housing of described low-voltage circuit breaker.
5. according to the low-voltage circuit breaker according to any one of the claims, it is characterized in that, described interference arc recognition unit is connected with described low-voltage circuit breaker through wire.
6. according to the low-voltage circuit breaker according to any one of the claims, it is characterized in that, described interference arc recognition unit is coupled with fault current recognition unit.
7. according to the low-voltage circuit breaker according to any one of the claims, it is characterized in that, described interference arc recognition unit has control unit, for determining the first sensor of electric current and the second transducer for the high frequency spectrum of determining at least one circuit.
8. according to low-voltage circuit breaker according to claim 7, it is characterized in that, described interference arc recognition unit has the 3rd transducer of the voltage for determining at least one circuit.
9. according to the low-voltage circuit breaker described in claim 7 or 8, it is characterized in that, described first sensor determines electric current and the high frequency spectrum of at least one circuit.
10. according to the low-voltage circuit breaker according to any one of the claims, it is characterized in that, every phase of multiphase current system is all provided with described transducer.
11., according to the low-voltage circuit breaker according to any one of the claims, is characterized in that, described interference arc recognition unit has selectivity relative to other interference arc recognition unit.
12., according to the low-voltage circuit breaker according to any one of the claims, is characterized in that, described interference arc recognition unit has power supply.
13., according to low-voltage circuit breaker according to claim 7, is characterized in that, described control unit has microprocessor.
14., according to the low-voltage circuit breaker according to any one of the claims, is characterized in that, described interference arc recognition unit has communication unit, and it can be connected to communication leg for data interaction.
15., according to low-voltage circuit breaker according to claim 14, is characterized in that, described interference arc recognition unit is constructed to, and can send by described communication unit and/or exchange trigger data, diagnostic data, process data and/or control data.
16., according to the low-voltage circuit breaker according to any one of the claims, is characterized in that, described interference arc recognition unit has display unit.
17., according to low-voltage circuit breaker according to claim 16, is characterized in that, described display unit has display and/or light-emitting diode, for showing the running status of described interference arc recognition unit.
CN201510594215.5A 2014-09-18 2015-09-17 Low voltage circuit breaker Pending CN105448617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011194842.7A CN112614749A (en) 2014-09-18 2015-09-17 Low-voltage circuit breaker

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014218828 2014-09-18
DE102014218828.8 2014-09-18

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN202011194842.7A Division CN112614749A (en) 2014-09-18 2015-09-17 Low-voltage circuit breaker

Publications (1)

Publication Number Publication Date
CN105448617A true CN105448617A (en) 2016-03-30

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CN202011194842.7A Pending CN112614749A (en) 2014-09-18 2015-09-17 Low-voltage circuit breaker

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DE (1) DE102015217108A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107449999A (en) * 2016-05-31 2017-12-08 西门子公司 Interference arc recognition unit
CN112614749A (en) * 2014-09-18 2021-04-06 西门子公司 Low-voltage circuit breaker

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DE102016223264A1 (en) * 2016-11-24 2018-05-24 Siemens Aktiengesellschaft breaker
DE102018208089A1 (en) * 2018-05-23 2019-11-28 Siemens Aktiengesellschaft Protection switching device, system and procedure
CN109510162B (en) * 2018-11-29 2024-02-06 浙江习羽智能科技有限公司 Fault arc protection circuit breaker
DE102019212661A1 (en) * 2019-08-23 2021-02-25 Siemens Aktiengesellschaft Electronic circuit breaker and method
DE102019213154B4 (en) 2019-08-30 2023-08-03 Siemens Aktiengesellschaft circuit breaker
DE102019214360A1 (en) 2019-09-20 2021-03-25 Siemens Aktiengesellschaft Circuit breaker and mobile device
DE102019214821B4 (en) 2019-09-27 2024-01-18 Siemens Aktiengesellschaft Circuit breaker and mobile device
DE102020209430A1 (en) 2020-07-27 2022-01-27 Siemens Aktiengesellschaft circuit breakers and procedures
DE102020210973A1 (en) 2020-08-31 2022-03-03 Siemens Aktiengesellschaft circuit breaker and display
DE102021202699B4 (en) 2021-03-19 2023-02-02 Siemens Aktiengesellschaft Circuit breaker system, circuit breaker, display unit and display holder
DE102022209951A1 (en) 2022-09-21 2024-03-21 Siemens Aktiengesellschaft Circuit breaker

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN112614749A (en) * 2014-09-18 2021-04-06 西门子公司 Low-voltage circuit breaker
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Publication number Publication date
CN112614749A (en) 2021-04-06
DE102015217108A1 (en) 2016-03-24

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Application publication date: 20160330