CN106786360A - A kind of RCCB carries out the servicing unit of residual current test when loading - Google Patents
A kind of RCCB carries out the servicing unit of residual current test when loading Download PDFInfo
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- CN106786360A CN106786360A CN201510828597.3A CN201510828597A CN106786360A CN 106786360 A CN106786360 A CN 106786360A CN 201510828597 A CN201510828597 A CN 201510828597A CN 106786360 A CN106786360 A CN 106786360A
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Abstract
A kind of servicing unit of residual current test when being loaded the invention discloses RCCB, the servicing unit includes that signal uses circuit, relay and power supply circuit；The power supply circuit is powered for relay, the signal use circuit for receive from the current signal on leakage, breaking major loop and triggering power supply circuit for relay is powered, the relay is for engaging or disconnect external circuitses.After being powered off in the major loop of RCCB, servicing unit provided by the present invention disconnects relay at once, it is to disconnect the voltage signal in external circuitses, the actuation time of whole servicing unit is less than 10ms, so as to avoid residual current in RCCB so that the damage of the leakage tripping device that leakage switch cannot in time disconnect and cause, also avoids influenceing test result.
Description
Technical field
The invention belongs to RCCB field, the servicing unit of residual current test is carried out when being loaded more particularly, to a kind of RCCB.
Background technology
In recent years, national economy high speed development, every profession and trade is continued to increase to the demand of electric energy and dependence, therefore undertakes electric energy transmission and distribution, electrical equipment protection increasingly cause the attention of country and the people with the low-tension switch electric appliance of control task.
The major function of RCCB is the damage of the person electric shock, electrical fire and the electrical equipment that prevent leakage current from causing; huge effect is played in the safeguard protection of low voltage power distribution network, its quality is directly connected to the quality of the life of broad masses of the people.The pilot project of the wherein residual current acting characteristic of RCCB is the critical index of its performance quality.Therefore, electronic type residual current circuit breaker it is actually used, according to standard GB/T 16917.1-2014, in GB 16916.1-2014 and GB14048.2-2008 under bringing onto load, Residual Current Operating Characteristic Test is carried out to it, but its internal electron circuit special construction is caused after residual current is applied if voltage can not cut off in a short period of time will easily cause the damage of leakage tripping device due to the products characteristics of RCCB itself, destroy the integrality of test product, or reclosing type product applies in the case of terminal voltage signal that the situation of result of the test can be influenceed after residual current after sensing.Conventional test method is exactly manually to go to cut off voltage after applying residual current but burning out for electric leakage dropout often occurs, and the original method of this comparing can not all meet requirement of the present laboratory to experiment in security and efficiency.
The content of the invention
For the problem present on, the servicing unit of residual current test is carried out when being loaded it is an object of the invention to provide a kind of RCCB.
Therefore, the present invention provides following technical scheme：
A kind of RCCB carries out the servicing unit of residual current test when loading, the servicing unit includes that signal uses circuit, relay and power supply circuit；The power supply circuit provides supply voltage for relay, the signal use circuit for receive from the current signal on leakage, breaking major loop and triggering power supply circuit for relay is powered, the relay is for connecting or disconnecting the supply voltage loop of RCCB major loop.
Alternatively, the signal includes current transformer, current sensor, bridge rectifier, decoupling circuit and transistor drive circuit using circuit, and the current transformer, current sensor, bridge rectifier, decoupling circuit and transistor drive circuit are sequentially arranged.
Alternatively, the current transformer connects current sensor, the output end of the current sensor connects the input of bridge rectifier, the output end of the bridge rectifier connects the base stage of transistor, the two ends of the decoupling circuit are connected to the base stage and emitter stage of transistor, the colelctor electrode connection power supply circuit of the transistor, the grounded emitter of the transistor in the decoupling circuit.
Alternatively, it is negative-positive-negative transistor that the signal uses the transistor in circuit.
Alternatively, the signal includes at least one decoupling capacitance using the decoupling circuit in circuit.
Alternatively, the power supply circuit includes accessory power supply, relaying voltage transformer, bridge rectifier, electrochemical capacitor, dropping resistor and transistor drive circuit, and the accessory power supply, relaying voltage transformer, bridge rectifier, electrochemical capacitor, dropping resistor and transistor drive circuit are sequentially arranged.
Alternatively, the accessory power supply connects relaying voltage transformer, the output end of the relay transformer connects the input of bridge rectifier, the output end of the bridge rectifier connects the positive terminal of electrochemical capacitor, the positive terminal of the electrochemical capacitor connects one end of relay and one end of dropping resistor respectively, the other end of the dropping resistor connects the base stage of transistor, and the other end of the relay connects the emitter stage of transistor, the grounded collector of the transistor.
Alternatively, the transistor in the power supply circuit is positive-negative-positive transistor.
Alternatively, the power supply circuit includes at least one transistor.
Alternatively, the relay is three, and three relays connect the three-phase of voltage respectively.
When signal reaches setting value using the current signal in circuit, signal is using the negative-positive-negative transistor conducting in circuit, so that producing voltage drop on dropping resistor in power supply circuit, so as to turn on the positive-negative-positive transistor in power supply circuit, so that power supply circuit is powered for relay, relay works after being powered, so as to connect the voltage signal in the supply voltage loop of RCCB major loop；
When power-off in RCCB major loop, then current vanishes in RCCB major loop, then the current signal in servicing unit in current transformer disappears, so as to signal is not worked using circuit, and signal is not turned on using the negative-positive-negative transistor in circuit, also voltage drop will not be produced on dropping resistor so in power supply circuit, so as to the positive-negative-positive transistor in power supply circuit is not turned on, this prevents power supply circuit from for relay is powered, relay will be unable to work, so as to disconnect the voltage signal in the supply voltage loop of RCCB major loop.
The servicing unit of residual current test when being loaded the invention provides a kind of RCCB, after being powered off in the major loop of RCCB, servicing unit provided by the present invention disconnects relay at once, it is to disconnect the voltage signal in external circuitses, the actuation time of whole servicing unit is less than 10 ms, so as to avoid residual current in RCCB so that the damage of the leakage tripping device that leakage switch cannot in time disconnect and cause, also avoids influenceing test result.
Brief description of the drawings
Fig. 1 is the schematic diagram of the servicing unit that residual current test is carried out when a kind of RCCB provided by the present invention is loaded；
In figure：1- signals use circuit；2- power supply circuits；101- current transformers；102- current sensors；103- bridge rectifiers；104- decoupling capacitances；105- signals are using the transistor in circuit；201- accessory power supplys；202- relaying voltage transformers；203- bridge rectifiers；204- electrochemical capacitors；205- dropping resistors；Transistor in 206- power supply circuits；K1- relays；K2- relays；K3- relays.
Specific embodiment
Referring to the drawings and specific embodiment the present invention is described in further detail.
A kind of RCCB carries out the servicing unit of residual current test when loading, the servicing unit includes signal using circuit 1, relay K1, K2, K3 and power supply circuit 2；The power supply circuit 2 provides supply voltage for relay K1, K2, K3, the signal use circuit 1 for receive from the current signal on leakage, breaking major loop and triggering power supply circuit 2 for relay K1, K2, K3 are powered, described relay K1, K2, K3 are for connecting or disconnecting the supply voltage loop of RCCB major loop.
The signal includes current transformer 101, current sensor 102, bridge rectifier 103, decoupling circuit and signal using the transistor 105 in circuit using circuit 1, and the current transformer 101, current sensor 102, bridge rectifier 103, decoupling circuit and signal are sequentially arranged using the transistor 105 in circuit.
The current transformer 101 connects current sensor 102, the output end of the current sensor 102 connects the input of bridge rectifier 103, the output end of the bridge rectifier 103 connects the base stage of transistor 105, the two ends of the decoupling circuit are connected to the base stage and emitter stage of transistor 105, the colelctor electrode connection power supply circuit of the transistor 105, the grounded emitter of the transistor 105 in the decoupling circuit.
It is negative-positive-negative transistor that the signal uses the transistor 105 in circuit 1.
The signal includes two decoupling capacitances 104 using the decoupling circuit in circuit 1.
The power supply circuit 2 includes the transistor 206 in accessory power supply 201, relaying voltage transformer 202, bridge rectifier 203, electrochemical capacitor 204, dropping resistor 205 and power supply circuit, and the transistor 206 in the accessory power supply 201, relaying voltage transformer 202, bridge rectifier 203, electrochemical capacitor 204, dropping resistor 205 and power supply circuit is sequentially arranged.
The accessory power supply 201 connects relaying voltage transformer 202, the output end of the relay transformer 202 connects the input of bridge rectifier 203, the output end of the bridge rectifier 203 connects the positive terminal of electrochemical capacitor 204, the positive terminal of the electrochemical capacitor 204 connects one end of relay K1, K2, K3 and one end of dropping resistor 205 respectively, the other end of the dropping resistor 205 connects the base stage of transistor 206, the other end of described relay K1, K2, K3 connects the emitter stage of transistor 206, the grounded collector of the transistor 206.
Transistor in the power supply circuit 2 is positive-negative-positive transistor.
The power supply circuit 2 includes two transistors.
Described relay K1, K2, K3 are three, and three relays K1, K2, K3 connect the three-phase of voltage respectively.
When signal reaches setting value using the current signal in circuit, signal is using the negative-positive-negative transistor conducting in circuit, so that producing voltage drop on dropping resistor in power supply circuit, so as to turn on the positive-negative-positive transistor in power supply circuit, so that power supply circuit is powered for relay, relay works after being powered, so as to connect the voltage signal in the supply voltage loop of RCCB major loop；
When power-off in RCCB major loop, then current vanishes in RCCB major loop, then the current signal in servicing unit in current transformer disappears, so as to signal is not worked using circuit, and signal is not turned on using the negative-positive-negative transistor in circuit, also voltage drop will not be produced on dropping resistor so in power supply circuit, so as to the positive-negative-positive transistor in power supply circuit is not turned on, this prevents power supply circuit from for relay is powered, relay will be unable to work, so as to disconnect the voltage signal in the supply voltage loop of RCCB major loop.
Above-mentioned specific embodiment is used for illustrating the present invention; only the preferred embodiments of the present invention; rather than limiting the invention; in the protection domain of spirit and claims of the present invention; any modification, equivalent substitution and improvements made to the present invention etc., both fall within protection scope of the present invention.
Claims (10)
1. the servicing unit of residual current test is carried out when a kind of RCCB is loaded, it is characterised in that the servicing unit includes that signal uses circuit, relay and power supply circuit；The power supply circuit provides supply voltage for relay, the signal use circuit for receive from the current signal on leakage, breaking major loop and triggering power supply circuit for relay is powered, the relay is for connecting or disconnecting the supply voltage loop of RCCB major loop.
2. the servicing unit of residual current test is carried out when a kind of RCCB according to claim 1 is loaded, it is characterized in that, the signal includes current transformer, current sensor, bridge rectifier, decoupling circuit and transistor drive circuit using circuit, and the current transformer, current sensor, bridge rectifier, decoupling circuit and transistor drive circuit are sequentially arranged.
3. the servicing unit of residual current test is carried out when a kind of RCCB according to claim 2 is loaded, it is characterised in that the current transformer connects current sensor, the output end of the current sensor
Connect the input of bridge rectifier, the output end of the bridge rectifier connects the base stage of transistor, the two ends of the decoupling circuit are connected to the base stage and emitter stage of transistor, the colelctor electrode connection power supply circuit of the transistor, the grounded emitter of the transistor in the decoupling circuit.
4. the servicing unit of residual current test is carried out when a kind of RCCB according to claim 2 is loaded, it is characterised in that it is negative-positive-negative transistor that the signal uses the transistor in circuit.
5. the servicing unit of residual current test when a kind of RCCB according to claim 2 is loaded, it is characterised in that the signal includes at least one decoupling capacitance using the decoupling circuit in circuit.
6. the servicing unit of residual current test when a kind of RCCB according to claim 1 is loaded, it is characterized in that, the power supply circuit includes accessory power supply, relaying voltage transformer, bridge rectifier, electrochemical capacitor, dropping resistor and transistor drive circuit, and the accessory power supply, relaying voltage transformer, bridge rectifier, electrochemical capacitor, dropping resistor and transistor drive circuit are sequentially arranged.
7. the servicing unit of residual current test when a kind of RCCB according to claim 6 is loaded, it is characterized in that, the accessory power supply connects relaying voltage transformer, the output end of the relay transformer connects the input of bridge rectifier, the output end of the bridge rectifier connects the positive terminal of electrochemical capacitor, the positive terminal of the electrochemical capacitor connects one end of relay and one end of dropping resistor respectively, the other end of the dropping resistor connects the base stage of transistor, the other end of the relay connects the emitter stage of transistor, the grounded collector of the transistor.
8. the servicing unit of residual current test when a kind of RCCB according to claim 6 is loaded, it is characterised in that the transistor in the power supply circuit is positive-negative-positive transistor.
9. the servicing unit of residual current test when a kind of RCCB according to claim 6 is loaded, it is characterised in that the power supply circuit includes at least one transistor.
10. the servicing unit of residual current test when a kind of RCCB according to claim 1 is loaded, it is characterised in that the relay is three, and three relays connect the three-phase of voltage respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828597.3A CN106786360B (en) | 2015-11-24 | 2015-11-24 | The auxiliary device of residual current test is carried out when a kind of leakage circuit breakers loads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828597.3A CN106786360B (en) | 2015-11-24 | 2015-11-24 | The auxiliary device of residual current test is carried out when a kind of leakage circuit breakers loads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106786360A true CN106786360A (en) | 2017-05-31 |
| CN106786360B CN106786360B (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510828597.3A Active CN106786360B (en) | 2015-11-24 | 2015-11-24 | The auxiliary device of residual current test is carried out when a kind of leakage circuit breakers loads |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2652004Y (en) * | 2003-10-21 | 2004-10-27 | 吴茂宗 | Automatic leakage and cut-off protector |
| CN201075364Y (en) * | 2007-06-22 | 2008-06-18 | 郭将 | Multifunctional phase-interruption leakage circuit breaker for three-phase motor |
| CN201663428U (en) * | 2010-04-29 | 2010-12-01 | 吴茂义 | Automatic power-off type comprehensive protector |
| JP2011153913A (en) * | 2010-01-27 | 2011-08-11 | Patokkusu Japan Kk | Leak current measuring device and measurement method in electric apparatus |
| KR20140039555A (en) * | 2012-09-24 | 2014-04-02 | 김한태 | Energy-saving elb and method thereof |
| CN205195236U (en) * | 2015-11-24 | 2016-04-27 | 浙江省机电产品质量检测所 | Auxiliary device who carries out residual current test during load of electric leakage circuit breaker |
-
2015
- 2015-11-24 CN CN201510828597.3A patent/CN106786360B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2652004Y (en) * | 2003-10-21 | 2004-10-27 | 吴茂宗 | Automatic leakage and cut-off protector |
| CN201075364Y (en) * | 2007-06-22 | 2008-06-18 | 郭将 | Multifunctional phase-interruption leakage circuit breaker for three-phase motor |
| JP2011153913A (en) * | 2010-01-27 | 2011-08-11 | Patokkusu Japan Kk | Leak current measuring device and measurement method in electric apparatus |
| CN201663428U (en) * | 2010-04-29 | 2010-12-01 | 吴茂义 | Automatic power-off type comprehensive protector |
| KR20140039555A (en) * | 2012-09-24 | 2014-04-02 | 김한태 | Energy-saving elb and method thereof |
| CN205195236U (en) * | 2015-11-24 | 2016-04-27 | 浙江省机电产品质量检测所 | Auxiliary device who carries out residual current test during load of electric leakage circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN106786360B (en) | 2019-04-02 |
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Effective date of registration: 20200615 Address after: 310051 1-4 / F, building 1, No. 125, miaohouwang Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang mechanical and electrical product quality inspection Institute Co.,Ltd. Address before: 310051, No. 125, Queen Wang Road, Binjiang District temple, Zhejiang, Hangzhou Patentee before: ZHEJIANG TESTING & INSPECTION INSTITUTE FOR MECHANICAL AND ELECTRICAL PRODUCTS QUALITY |