CN201138748Y - Protecting equipment for electric power secondary circuit tripping and closing coil - Google Patents
Protecting equipment for electric power secondary circuit tripping and closing coil Download PDFInfo
- Publication number
- CN201138748Y CN201138748Y CNU2007201588887U CN200720158888U CN201138748Y CN 201138748 Y CN201138748 Y CN 201138748Y CN U2007201588887 U CNU2007201588887 U CN U2007201588887U CN 200720158888 U CN200720158888 U CN 200720158888U CN 201138748 Y CN201138748 Y CN 201138748Y
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- protector
- circuit
- auxiliary switch
- coil
- tripping
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Abstract
The utility model relates to a protection device for electromagnetic coils in power system, in particular to a tripping coil protection device for secondary circuit in power system. The technical proposal is adopted as follows: the utility model mainly comprises a protector, an auxiliary switch (DL) and an electromagnetic coil, the protector comprises a startup latency circuit and an auxiliary relay; a positive power is connected with the input terminal of the protector via the auxiliary switch (DL), the fifth output terminal of the protector is connected with a negative power supply via the electromagnetic coil for forming the loop, and the fourth output terminal of the protector is connected with the negative power supply for forming a loop. The tripping coil protection device for secondary circuit in power system has the beneficial effects that the burnout caused by the long-term electrified tripping coil can be effectively avoided, thereby promoting the reliability of the correct action of the breaker, ensuring the safe and reliable operation of the power network, providing the reliable power supply support for electricity consumers and promoting the economic effects of the power system.
Description
One, technical field:
The utility model relates to the protective device of solenoid in a kind of electric power system, particularly a kind of electric power secondary circuit tripping coil protective device.
Two, background technology:
Solenoid is used very extensive in electric power system, the divide-shut brake coil of circuit breaker secondary control loop particularly, it all is the electromagnetic type coil, often take place because of operating mechanism is refused branch, is refused to close, auxiliary switch DL movingly closes, under the situation of the moving mismate that breaks, big electric current long duration of action is in tripping coil, burn tripping coil, cause circuit breaker to be forced to stop transport, even cause power grid accident or large area blackout because of can not in time excising the system failure, influence the safe and reliable power supply and the stabilization of power grids.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of electric power secondary circuit tripping coil protective device is provided, and can in time cut off the power supply of tripping coil when above-mentioned situation occurring, prevents that coil from burning out.
Its technical scheme is: mainly be made up of protector, auxiliary switch (DL) and solenoid, described protector comprises that startup delay circuit and auxiliary relay constitute; Positive supply is connected with the input of protector by auxiliary switch (DL), and the 5th output of protector constitutes the loop through solenoid and negative supply, and the 4th output of protector and negative supply constitute the loop;
When manual or remote-control circuit breaker breaker tripping and closing, circuit breaker operation mechanism and auxiliary switch (DL) action is normal, and protector is failure to actuate; If operating mechanism tripping or auxiliary switch DL contact burn are bonding; positive supply constitutes the loop through the 4th output and the negative supply of auxiliary switch (DL) and protector main body; start protector; after time-delay; the protector action; inner normally closed contact disconnects, thus the direct current of broken coil, and the protection coil is not burnt.
Be provided with additional resistance (R3, R5) in the described protector, additional resistance (R3) is often driven auxiliary contact through circuit breaker and is inserted closing circuit; Additional resistance (R5) inserts trip(ping) circuit through the circuit breaker normally closed auxiliary contact.
Major function be the protection solenoid can high electrical breakdown, weaken effectively or eliminate contact arcing phenomenon or weaken the contact energy of striking sparks greatly; and has an automatically in limited time electrification time; prevent that electric equipment is when folding; the long charged generation that then makes the serious heating burnout accident of coil of coil; guaranteed the normal folding of electric equipment; thereby when having improved the electric equipment folding, the reliability of correct operation.
The beneficial effects of the utility model are: can effectively avoid long-term charged causing of tripping coil to burn, thereby improved the correct operation reliability of circuit breaker, guaranteed the safe and reliable operation of electrical network, reliable power supply guarantee is provided for the electricity consumption client, has improved the economic benefit of electric power system.
Four, description of drawings:
Accompanying drawing 1 is the front view of protector of the present utility model;
Accompanying drawing 2 is end views of protector of the present utility model;
Accompanying drawing 3 is line maps of a kind of embodiment of the present utility model;
Accompanying drawing 4 is line maps of another kind of embodiment of the present utility model;
Accompanying drawing 5 is partial circuit figure of protector of the present utility model.
Five, embodiment:
1-5 in conjunction with the accompanying drawings, the utility model will be further described:
Embodiment 1: mainly be made up of protector, auxiliary switch (DL) and solenoid, described protector comprises that startup delay circuit and auxiliary relay constitute; Positive supply is connected with the input of protector by auxiliary switch (DL), and the 5th output (5) of protector constitutes the loop through solenoid and negative supply, and the 4th output (4) of protector constitutes the loop with negative supply;
When manual or remote-control circuit breaker breaker tripping and closing, circuit breaker operation mechanism and auxiliary switch (DL) action is normal, and protector is failure to actuate; If operating mechanism tripping or auxiliary switch DL contact burn are bonding; positive supply constitutes the loop through the 4th output (4) of auxiliary switch (DL) and protector main body with negative supply; start protector; after time-delay; the protector action; inner normally closed contact disconnects, thus the direct current of broken coil, and the protection coil is not burnt.
Be provided with additional resistance (R3, R5) in the described protector, additional resistance (R3) is often driven auxiliary contact through circuit breaker and is inserted closing circuit; Additional resistance (R5) inserts trip(ping) circuit through the circuit breaker normally closed auxiliary contact.
With reference to accompanying drawing 5, primary cut-out secondary circuit protector function realizes: no matter be in manual control or in automatic control position, when the closing coil loop has electric current to flow through, Hall element will be measured the size of this electric current.If electric current is greater than a certain limit value, the secondary circuit protector will start timing unit and pick up counting.If the circuit breaker auxiliary contact switch undesired or operating mechanism is stuck; the feed motion electric current does not disappear in the time that timing unit is adjusted; the secondary circuit protector will send trip signal opens its output normally-closed contact KH1; tripping closing contactor KM; normally opened contact tripping closing coil loop by KM; protective circuit breaker closing coil YC avoids burning, and sends corresponding sound and light alarm signal simultaneously, notifies the operator on duty.In like manner, when breaking coil had operating current to flow through, the tripping operation operating current did not disappear in the time of adjusting, and protector will be given an order its output normally-closed contact KH2 is opened, tripping breaking coil loop, and provide corresponding sound and light alarm signal.
Embodiment 2: other is as described in the above-mentioned embodiment; mainly form by protector, auxiliary switch (DL) and solenoid; positive supply directly is connected with the input of protector; the 5th output (5) of protector constitutes the loop through solenoid and negative supply, and the 4th output (4) of protector constitutes the loop by auxiliary switch (DL) and negative supply.
Claims (2)
1, a kind of electric power secondary circuit tripping coil protective device is characterized in that: mainly be made up of protector, auxiliary switch (DL) and solenoid, described protector comprises that startup delay circuit and auxiliary relay constitute; Positive supply is connected with the input of protector by auxiliary switch (DL), and the 5th output (5) of protector constitutes the loop through solenoid and negative supply, and the 4th output (4) of protector constitutes the loop with negative supply;
When manual or remote-control circuit breaker breaker tripping and closing, circuit breaker operation mechanism and auxiliary switch (DL) action is normal, and protector is failure to actuate; If operating mechanism tripping or auxiliary switch DL contact burn are bonding; positive supply constitutes the loop through the 4th output (4) of auxiliary switch (DL) and protector main body with negative supply; start protector; after time-delay; the protector action; inner normally closed contact disconnects, thus the direct current of broken coil, and the protection coil is not burnt.
2, electric power secondary circuit tripping coil protective device according to claim 1 is characterized in that: be provided with additional resistance (R3, R5) in the described protector, additional resistance (R3) is often driven auxiliary contact through circuit breaker and is inserted closing circuit; Additional resistance (R5) inserts trip(ping) circuit through the circuit breaker normally closed auxiliary contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201588887U CN201138748Y (en) | 2007-12-15 | 2007-12-15 | Protecting equipment for electric power secondary circuit tripping and closing coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201588887U CN201138748Y (en) | 2007-12-15 | 2007-12-15 | Protecting equipment for electric power secondary circuit tripping and closing coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201138748Y true CN201138748Y (en) | 2008-10-22 |
Family
ID=40039428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201588887U Expired - Fee Related CN201138748Y (en) | 2007-12-15 | 2007-12-15 | Protecting equipment for electric power secondary circuit tripping and closing coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201138748Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077861A (en) * | 2012-08-07 | 2013-05-01 | 厦门华电开关有限公司 | Switch equipment electrical apparatus release coil protective device |
| CN104332961A (en) * | 2014-11-04 | 2015-02-04 | 国家电网公司 | Burning proof protection device for switch opening and closing coil |
-
2007
- 2007-12-15 CN CNU2007201588887U patent/CN201138748Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077861A (en) * | 2012-08-07 | 2013-05-01 | 厦门华电开关有限公司 | Switch equipment electrical apparatus release coil protective device |
| CN104332961A (en) * | 2014-11-04 | 2015-02-04 | 国家电网公司 | Burning proof protection device for switch opening and closing coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |