CN1619907A - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN1619907A CN1619907A CN 200410043465 CN200410043465A CN1619907A CN 1619907 A CN1619907 A CN 1619907A CN 200410043465 CN200410043465 CN 200410043465 CN 200410043465 A CN200410043465 A CN 200410043465A CN 1619907 A CN1619907 A CN 1619907A
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- Prior art keywords
- circuit
- breaker
- current
- load
- load factor
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Abstract
Provided is a circuit breaker in which a user can recognize wether or not having any margin in the load current value of the electric circuit for automatic circuit interception of the circuit breaker and against a prescribed level. Load factor is calculated with load rate calculation means 116 from a rated current value of the circuit breaker 101 set by load current value of an electric circuit operated via a converter 5 by electric current effective value computation means 112 and rated electric current setting means 115. This load factor is made to be displayed at the monochrome liquid crystal display element 13, and lighting or blinking of the light emitting diode set beforehand corresponding to its magnitude makes the monochrome liquid crystal display element 13 illuminate and this is provided as a backlight illumination of the monochrome liquid crystal display element 13, whereby visibility of the load factor is obtained.
Description
Invention field
Circuit-breakers such as the relevant Inturruptor for sub-line of the present invention, residual current circuit breaker are specially the relevant circuit-breaker of being with display unit, and this display unit has the function of the circuit informations such as load current of display circuit.
Background technology
For overcurrent, short circuit or electric leakage accident, also require to cut off automatically the Inturruptor for sub-line of this circuit or residual current circuit breaker in the sign (information) that just captures before being about to make the above-mentioned action of opening circuit in advance, according to circumstances use this information effectively, play as not allowing the effect of the equipment that circuit moment opens circuit by the user.In order to respond the such requirement in market, on existing circuit breaker, when the leakage current of this circuit surpasses setting, or the auto-cutout degree of the load current of this circuit and circuit-breaker and when surpassing prescribed limits (level), for with these state notifyings user, adopt the structure (for example with reference to patent documentation 1) that makes the appended lumination of light emitting diode of circuit-breaker.
[patent documentation 1] spy opens 2001-128353 communique (paragraph 0009 to 0011, Fig. 1)
Summary of the invention
Existing circuit-breaker passes through lumination of light emitting diode, though surpass predetermined prescribed limits by visual can identification, but the problem that exists is, the load current value that can not discern this circuit behind the lumination of light emitting diode respectively has or not surplus with respect to the automatic cut-out of circuit-breaker, and the load current value of this circuit has or not surplus with respect to prescribed limits before lumination of light emitting diode.
The present invention proposes for addressing the above problem just, and its purpose is to obtain the circuit-breaker that load current that a kind of user can discern this circuit easily has or not surplus for automatic cut-out and the prescribed limits of circuit-breaker.
Be to constitute like this in the circuit-breaker of the present invention, it is converted into ratio value with respect to the rated current of circuit-breaker with the load current value of this circuit, shows on the appended display unit of circuit-breaker with this ratio value.
As mentioned above, circuit-breaker of the present invention, comprise the current detecting converting means that forms digital signal after detection is flow through the load current of circuit and carried out mould/transformation of variables, according to the current effective value arithmetic unit that calculates current effective value by the current value after above-mentioned current detecting converting means detection and the conversion, store the timing circuit of big or small corresponding a plurality of operation time limit characteristics of maintenance and above-mentioned load current accordingly with the rated current of this circuit-breaker, and be positioned at above-mentioned load current continue official hour under the state of any one action limit value of above-mentioned operation time limit characteristic after output make the open circuit action output device that opens circuit of signal of action of this circuit-breaker, the load factor calculation element that in the foregoing circuit circuit breaker, has the computational load rate, this load factor represents to utilize current effective value that above-mentioned current effective value arithmetic unit the calculates ratio with respect to the rated current of this circuit-breaker, also have the display unit that shows above-mentioned load factor in addition, have or not surplus for the auto-cutout and the prescribed limits of this circuit-breaker so user (observer) can discern above-mentioned load current easily.
Description of drawings
Fig. 1 is the frame circuit diagram of the circuit-breaker of the invention process form 1.
Fig. 2 changes the schematic diagram of an example for the single color LCD status display module corresponding with load current of expression the invention process form 1.
Fig. 3 is the frame circuit diagram of the circuit-breaker of the invention process form 2.
Fig. 4 is the front view of the display unit of the invention process form 2.
Fig. 5 changes the schematic diagram of an example for the single color LCD status display module corresponding with load current of expression the invention process form 2.
Label declaration
6 current detection circuits, 7 A/D translation circuits, 12 liquid crystal display drive circuits, 13 single color LCD display elements, 14 back light control circuits, 15～18 LED,
101 circuit-breakers
111 current detecting converting means
112 current effective value arithmetic units
115 rated current setting devices
116 load factor calculation elements
117,117a display unit
118 back light switching device shifters
Embodiment
Example 1
Fig. 1 represents the frame circuit diagram of the circuit-breaker of the invention process form 1.Among Fig. 1, the circuit 1 that is connected with not shown power supplys such as transformer, and the circuit 2 that is connected with not shown equally motor even load be connected with power supply side terminal 3 and the load side terminal 4 that the circuit-breaker 101 that insulation crust is arranged is had respectively.This flows to load from power supply, promptly flow to the electric current (being called load current later on) of circuit 2 all the time by the current transformer 5 in the circuit-breaker 101 from circuit 1, export to current detecting converting means 111, in this current detecting converting means 111, load current is transformed into current detection signal in current detection circuit 6, in A/D (analog/digital) translation circuit 7, be transformed into digital signal again, this digital signal is taken into current effective value arithmetic unit 112, by the computing of this circuit effective value arithmetic unit 112, circuit-breaker 101 can be discerned the value of load current.
When the value of the load current that calculates surpasses the rated current of circuit-breaker 101, according to its size, deliver to the length that has in the timing circuit 113 in limited time 9, short in limited time 10, and any circuit of instantaneous 11 exercises selectivity characteristic, this state is if continue official hour, and then 113 pairs of the timing circuits action output device 114 that opens circuit sends clearance order.Be specially, when for example the rated current of circuit-breaker 101 was 1600A, load current was with respect to rated current
A is 2 times (thereby, be 3200A), and is then long in limited time 9 after 150 seconds,
B is 4 times * 1.5 times (thereby, be 9600A), and is then short in limited time 10 after 0.5 second,
C be 16 times (thereby, 25600A), then instantaneous 11 after 0.05 second, send clearance order to the action output device 114 that opens circuit respectively, this action output device 114 that opens circuit makes switching mechanism 8 finish the tripping operation action immediately, the disconnecting consumers electric current is burnt out by the electric wire that can prevent from advance like this in circuit 1 or the circuit 2 to use etc.In addition, when utilizing rated current setting device 115 to change rated current, this information is also delivered to timing circuit 113, variations (when for example rated current became 1440A, short current value of prescribing a time limit characteristic became 8640A) that also link of aforesaid each operation time limit characteristic.Also have, this rated current setting device 115 is arranged on the surface of described insulation crust mostly, near the operating grip that for example not shown circuit-breaker 101 has etc., is convenient to user's operation.
The information of the rated current of the value of the load current of calculating and the circuit-breaker 101 set by rated current setting device 115 is also delivered to load factor calculation element 116, and the computational load electric current is with respect to the ratio (hereinafter referred to as load factor) of rated current therein.For example with respect to rated current 1600A, if load current be 1120A then load factor be 70%.This load factor shows on single color LCD display element 13 by liquid crystal display drive circuit 12, also delivers to led drive circuit 14 described later simultaneously.
That Fig. 2 represents is corresponding with load current, state variation one example of single color LCD display element 13.Among Fig. 2, the track of thick line is represented load factor over time on the paper, and the load factor of T1～T7 shows (for example at moment T4, single color LCD display element 13 shows 75%) on single color LCD display element 13 constantly arbitrarily.The different light-emitting diode of glow color (hereinafter to be referred as LED (Light emitting diode)) 15～18 is arranged at the bottom of single color LCD display element 13, the information of load factor is delivered to back light control circuit 14 (with reference to Fig. 1), this back light control circuit 14 makes the some at least back light light source luminescents as the single color LCD display element in LED15～18 according to the size of this load factor like this.Here establish LED15 for blue, LED16 is green, LED17 is yellow, and LED18 is red, preestablish load factor and be blue light less than 80%, 90% less than being glow green more than 80%, 100% less than being jaundice coloured light more than 90%, greater than 100% is burn red, be blue at moment T1, T2 and T4 then, T3 and T5 are green constantly, and T6 is yellow constantly, T7 is red constantly, and each glow color is to provide the back light illumination by not shown light guide plate to single color LCD display element 13.And the convenience in order to map in Fig. 2 is represented different illumination back lighting colors with different hacures.
Thereby, because load current is represented as the load factor with respect to rated current, so have or not surplus, be that the operating position of load can come into plain view to the auto-cutout limit value of circuit-breaker 101 or for the prescribed limits of any setting, simultaneously, because size according to load factor, single color LCD display element 13 back light color changes can be made,, the effect of the measuring instrument of the high low degree of so-called expression can be played so not too be subjected to the influence at visual angle.Also have, display unit 117 with single color LCD display element 13 and LED15～18 formations, shown in Fig. 1 be and the rated current setting device 115 the same surfaces that are arranged on circuit-breaker 101, but be installed in the position higher on the distribution board for example or the position of the inside if consider circuit-breaker 101, this display unit can be made separable form, can freely be arranged on place arbitrarily, then observe more convenient.
If consider to observe and make things convenient for this point, even then single use color liquid crystal display device also can obtain same effect, but in view of as the desired specification of circuit-breaker, be factors such as economy, life-span, environment for use, preferably adopt the structure that makes up with LED with single color LCD display element and back light light source as the present invention.In the above description, only be defined in load factor, but also can in Fig. 1, current effective value arithmetic unit 112 load calculated current values be delivered to liquid crystal display drive circuit 12, by showing load current value so simultaneously.In addition, except the information of relevant these load currents, also can be leakage current for example certainly, also can obtain same effect.
Example 2
It in the example 1 switching point that is predetermined the back light illuminating color, but this example as shown in Figure 3, by establishing back light switching device shifter 118, the user can set the switching point of back light illuminating color arbitrarily, also can change the luminous order of this back light illuminating color simultaneously.Now this establishing method is described according to Fig. 4.Among Fig. 4, be included in the back light switching device shifter 118 of the upper and lower side of paper of single color LCD display element 13 on the display unit 117a with formations such as buttons.The user determines the switching point and the back light illuminating color of load factor when beginning circuit-breaker 101 energisings.For example, want to set following situation
1, greater than 70% less than 105%, green emitting;
2, greater than 105% less than 115%, blue-light-emitting;
3, greater than 115% less than 130%, Yellow luminous;
4, greater than 130%, red flicker
Then with above-mentioned numbering 1,2 ... mutually following numbering 1-1, the 1-2 of Hu Yinging ... form be set at
1-1,7 → 0 → green → luminous → setting
2-1,1 → 0 → 5 → indigo plant → luminous → setting
3-1,1 → 1 → 5 → Huang → luminous → setting
4-1,1 → 3 → 0 → red → flicker → setting
In the following circuit-breaker 101 that above-mentioned formation and setting be described according to Fig. 5, with an example of the state variation of the corresponding single color LCD display element 13 of load current.Among Fig. 5, the track of thick line represents that load factor over time on the paper, be illustrated in arbitrarily T1 to T4 single color LCD display element 13 constantly show rated current be the load factor of 1600A and load current value situation (for example, at moment T2, single color LCD display element 13 demonstration 110% and 1760A).According to described setting, T1 is green constantly, T2 is a blueness constantly, T3 is yellow constantly, these are respectively as the back light illumination light-emitting of single color LCD display element 13, be red flicker constantly also, show by so-called flicker, thereby it be (identical with example 1 near the situation of auto-cutout to give prominence to circuit-breaker 101 more at T4, in order to map conveniently, represent different back light illuminating colors) with different hacures.Therefore, want the accurately zone of the load factor of management, therefore, can allow the user discern the state variation of flexible corresponding load factor with it for the operation conditions and the common electricity usage situation of load because the user can freely set.
Claims (6)
1. a circuit-breaker comprises
Detection flow through the load current of circuit and carry out mould/transformation of variables and form digital signal the current detecting converting means,
According to detect by described current detecting converting means and the current value of conversion calculate current effective value the current effective value arithmetic unit,
With the rated current of this circuit-breaker store accordingly keep with the timing circuit of big or small corresponding a plurality of operation time limit characteristics of described load current and
The state that described load current is in any one action limit value of described operation time limit characteristic continues down output behind the official hour makes the open circuit action output device that opens circuit of signal of action of this circuit-breaker,
It is characterized in that, comprise
Calculate current effective value that expression calculated by described current effective value arithmetic unit with respect to the ratio of the rated current of this circuit-breaker be load factor the load factor calculation element and
The display unit that shows described load factor.
2. circuit-breaker as claimed in claim 1 is characterized in that,
Display unit is a liquid crystal cell, and comprises back light light source that shines described liquid crystal cell from behind and the back light control circuit that makes the variations in light of described back light light source according to the state of load factor.
3. circuit-breaker as claimed in claim 2 is characterized in that,
The back light light source constitutes with the different light-emitting diode of a plurality of glow colors.
4. circuit-breaker as claimed in claim 2 is characterized in that, comprises
Back light switching device shifter for the variations in light benchmark of load factor setting changing light-emitting diode.
5. circuit-breaker as claimed in claim 1 is characterized in that, comprises
Set the rated current setting device of this circuit-breaker rated current.
6. circuit-breaker as claimed in claim 1 is characterized in that,
Make the current effective value that calculates by the current effective value arithmetic unit and load factor on liquid crystal cell, show together and constitute.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003391217 | 2003-11-20 | ||
| JP2003391217A JP2005158304A (en) | 2003-11-20 | 2003-11-20 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1619907A true CN1619907A (en) | 2005-05-25 |
| CN100418280C CN100418280C (en) | 2008-09-10 |
Family
ID=34718348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100434651A Expired - Fee Related CN100418280C (en) | 2003-11-20 | 2004-04-27 | Circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005158304A (en) |
| CN (1) | CN100418280C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047081B (en) * | 2006-03-30 | 2010-09-15 | 三菱电机株式会社 | Circuit breaker |
| CN102110555A (en) * | 2009-12-24 | 2011-06-29 | 张世兴 | Load variation tracking automatic rated value breaker |
| CN102986105A (en) * | 2010-01-21 | 2013-03-20 | 伊顿电气Ip两合公司 | Electronic overcurrent release for circuit breakers |
| CN101714749B (en) * | 2008-10-08 | 2013-04-10 | 三菱电机株式会社 | Electronic circuit breaker |
| CN103219804A (en) * | 2013-05-08 | 2013-07-24 | 章志福 | Wireless electric energy management instrument applicable to energy management and control system |
| CN113924633A (en) * | 2019-05-29 | 2022-01-11 | 三菱电机株式会社 | Circuit breaker, circuit breaker system, information processing method, and information processing program |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4830813B2 (en) * | 2006-11-27 | 2011-12-07 | パナソニック電工株式会社 | Distribution board |
| KR100970892B1 (en) | 2008-09-17 | 2010-07-16 | 권순락 | ELB trip alarm system for piping heating device |
| WO2014178331A1 (en) * | 2013-04-30 | 2014-11-06 | 富士電機株式会社 | Control device and drive device for motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685024A (en) * | 1985-11-19 | 1987-08-04 | General Electric Company | Overcurrent circuit interrupter using RMS sampling |
| CN1042985C (en) * | 1993-10-05 | 1999-04-14 | 富士电机株式会社 | Circuit breaker |
| JPH1032903A (en) * | 1996-07-11 | 1998-02-03 | Kawamura Electric Inc | Load factor display device of power distribution panel |
| JPH1066209A (en) * | 1996-08-09 | 1998-03-06 | Kawamura Electric Inc | Load factor display device for distribution panel |
| JP3668652B2 (en) * | 1999-10-22 | 2005-07-06 | 三菱電機株式会社 | Electronic circuit breaker |
-
2003
- 2003-11-20 JP JP2003391217A patent/JP2005158304A/en active Pending
-
2004
- 2004-04-27 CN CNB2004100434651A patent/CN100418280C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047081B (en) * | 2006-03-30 | 2010-09-15 | 三菱电机株式会社 | Circuit breaker |
| CN101714749B (en) * | 2008-10-08 | 2013-04-10 | 三菱电机株式会社 | Electronic circuit breaker |
| CN102110555A (en) * | 2009-12-24 | 2011-06-29 | 张世兴 | Load variation tracking automatic rated value breaker |
| CN102110555B (en) * | 2009-12-24 | 2013-01-23 | 张世兴 | Load variation tracking automatic rated value breaker |
| CN102986105A (en) * | 2010-01-21 | 2013-03-20 | 伊顿电气Ip两合公司 | Electronic overcurrent release for circuit breakers |
| CN102986105B (en) * | 2010-01-21 | 2015-03-11 | 伊顿电气Ip两合公司 | Electronic overcurrent release for circuit breakers |
| CN103219804A (en) * | 2013-05-08 | 2013-07-24 | 章志福 | Wireless electric energy management instrument applicable to energy management and control system |
| CN113924633A (en) * | 2019-05-29 | 2022-01-11 | 三菱电机株式会社 | Circuit breaker, circuit breaker system, information processing method, and information processing program |
| CN113924633B (en) * | 2019-05-29 | 2024-01-05 | 三菱电机株式会社 | Circuit breaker, circuit breaker system, information processing method, and recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005158304A (en) | 2005-06-16 |
| CN100418280C (en) | 2008-09-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20080910 Termination date: 20110427 |