CN201290001Y - Emergency current failure loop with undervoltage thread-losing safety design - Google Patents
Emergency current failure loop with undervoltage thread-losing safety design Download PDFInfo
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- CN201290001Y CN201290001Y CNU2008201785911U CN200820178591U CN201290001Y CN 201290001 Y CN201290001 Y CN 201290001Y CN U2008201785911 U CNU2008201785911 U CN U2008201785911U CN 200820178591 U CN200820178591 U CN 200820178591U CN 201290001 Y CN201290001 Y CN 201290001Y
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- emergency power
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- circuit breaker
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- 238000013461 design Methods 0.000 title claims description 15
- 230000006837 decompression Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model provides an emergency power-off loop which avoids the potential safety hazards that emergency power off is failed caused by the fracture of a power-off loop by utilizing the undervoltage protection function of an under-voltage release. The emergency power-off switches of the emergency power-off loop with the under-voltage release are in series connection with each other, and are connected with the terminal of the under-voltage release of a circuit breaker; by utilizing the undervoltage protection function of the accessory under-voltage release of the circuit breaker, the loop of the under-voltage release is communicated and the coil is electrified when the circuit breaker is switched off manually, and the magnetic property generated by the electromagnet keeps the circuit breaker in a closed state; when the emergency power-off switch is switched on or any fault exists in the emergency power-off loop, the loop is cut off, the power of the coil of the under-voltage release is cut, and the circuit breaker can cut off the power supply of the whole field automatically.
Description
Technical field:
The utility model relates to the improvement in a kind of emergency power off loop, particularly a kind of low-voltage power-off loop.
Background technology:
When emergency takes place when, for avoiding producing serious consequence, need be at the shortest time internal cutting off main electricity; If the staff can incur loss through delay a lot of times to main distribution cabinet separating brake, therefore need design emergency power off loop.
One or more emergency power off switches are arranged in the general requirement in emergency power off loop at the scene, and require the emergency power off switch to move, and can be placed in on-the-spot any position as required easily; When emergency took place, any one the emergency power off switch that requires to press wherein can both cut off on-the-spot main electricity rapidly, guarantees personnel and device security, treat that emergency solves after, at main distribution cabinet closing by hand, restore electricity.
The implementation method in emergency power off loop mainly is to utilize the shunted exciter tripping function of the circuit breaker of band shunt release to realize emergency power off at present.Shunt release is a kind of annex of remote operation separating brake, when supply voltage equals arbitrary voltage between the 70%-110% of specified control supply voltage, just can reliable breaking circuit breaker, and cut off power supply to the scene.Shunt release is a short time duty, and coil electrify time generally can not surpass 1S, otherwise line can be blown.The defective that this method for designing exists is:
1, when the cable in outage loop for a certain reason (for example aging, fire) fractureed, and at this moment need emergency power off, even press the emergency power off switch, the outage loop can not be closed, therefore has potential safety hazard;
2, can only cut off the power supply by manual emergency, can not realize automatic outage.
Summary of the invention:
The purpose of this utility model is a kind of safer emergency power off loop of design, is included in the emergency power off in time when breaking down of emergency power off loop, the raising circuit safety.
The utility model is achieved through the following technical solutions goal of the invention:
A kind of preferred embodiment of the present utility model is a kind of emergency power off loop with the undervoltage tripping Safety Design, the emergency power off loop of described band undervoltage tripping Safety Design comprises more than one emergency power off switch, the circuit breaker of subsidiary device for under-voltage releasing equipment and emergency power off switch control box are formed, described emergency power off switch constitutes series relationship each other, and be connected with the device for under-voltage releasing equipment terminal of circuit breaker, each emergency power off switch is connected by the jack of latch with emergency power off switch control box, a jack and an on-off switch are arranged on the described emergency power off switch control box, and described jack connects emergency power off switch and/or short circuit latch.
The circuit breaker that a kind of preferred embodiment of the present utility model is described band undervoltage tripping possesses the decompression power-off protection function; and having the annex device for under-voltage releasing equipment, the on-off switch of described emergency power off switch control box is to use when changing the emergency power off switch or changing the short circuit latch.
Latch and jack that a kind of most preferred execution mode of the present utility model is described emergency power off switch control box adopt industrial connector, and anti-error extracting apparatus is installed.The back side of described emergency power off switch is equipped with magnet, its parameter request be operating voltage 220VAC, operating current greater than 8mA, dielectric strength 100M Ω, switch life greater than 1000 times.
A kind of emergency power off of circuit breaker design loop of present technique utilization band device for under-voltage releasing equipment addresses the above problem.As its name suggests, device for under-voltage releasing equipment is exactly when under-voltage or no-voltage fault occurring, can in time divide deenergizing, plays the effect of field apparatus, is mainly used in the automation field, and characteristic is as follows:
1. supply voltage drops in 70%～35% scope of rated voltage, and device for under-voltage releasing equipment should move.
Supply voltage be lower than 35% o'clock device for under-voltage releasing equipment of rated voltage can not adhesive, to prevent breaker closing.
3. device for under-voltage releasing equipment should guarantee that adhesive is to guarantee that circuit breaker is reliably closed when supply voltage was more than or equal to 85% rated voltage.
Basic principle is to utilize the under-voltage protection function of the annex device for under-voltage releasing equipment of circuit breaker; behind the circuit breaker that manually closes; make the device for under-voltage releasing equipment circuit communication; the power supply that changes DC24V by AC220V makes coil charged; electromagnet produces magnetic and keeps circuit breaker to be in closure state, and when pressing the emergency power off switch or device for under-voltage releasing equipment loop when any fault is arranged, the loop is cut off; device for under-voltage releasing equipment coil losing electricity, circuit breaker will cut off the power supply of whole place automatically.
The quantity of emergency power off switch is determined as required, constitutes series relationship between the emergency power off switch, is connected with the device for under-voltage releasing equipment terminal of circuit breaker; Each emergency power off switch is connected by the jack of latch with emergency power off switch control box, can extract and the short circuit latch is inserted into the jack of emergency power off switch control box when not in use.During operate as normal, the emergency power off switch is in normally off, when breaker closing, provides voltage by the 24DVC power supply for the device for under-voltage releasing equipment of circuit breaker, makes coil charged, electromagnetic actuation; When having an accident, press the emergency power off switch, the outage loop disconnects, and the device for under-voltage releasing equipment dead electricity breaking circuit breaker of circuit breaker reaches the purpose of emergency power off.Like this, even the cable breakdown in outage loop also just causes outage, but can not produce serious consequence, fail safe is improved, and when circuit is under-voltage, realizes outage automatically.
Figure of description:
1, Fig. 1 is the emergency power off loop based on the shunted exciter tripping principle;
2, Fig. 2 is an emergency power off loop circuit connection layout.
As shown in the figure: 1 is that the first emergency power off switch, 2 is that the second emergency power off switch, 3 is that n-1 emergency power off switch, 4 is that n emergency power off switch, 5 is that emergency power off switch control box, switch enclosure, 6 are the long-range outage terminal of separation release of belt fuser.
Specific embodiment:
The emergency power off loop consists of the following components:
1, the long-range outage terminal (DC24V undervoltage tripping) of band device for under-voltage releasing equipment
This element is the key element of whole design circuit, requires circuit breaker not only to have outside the defencive functions such as short circuit overload commonly used, also needs to be with the annex device for under-voltage releasing equipment, possesses the decompression power-off protection function.
2, AC220V changes the power supply of DC24V
3, emergency power off switch control box
A jack and an on-off switch are arranged on the emergency power off switch, and jack is used for connecting emergency power off switch or short circuit latch, and on-off switch uses when changing emergency power off switch or short circuit latch, guarantees that the outage loop is in closure state always.
Emergency power off switch control box is distributed under test or the control place antistatic floor, the button box that serviceability is good is made, switch on the control box requires the life-span long, latch and jack adopt industrial connector, require latch to insert the back contact well, and requiring has certain tensile strength, and anti-error extracting apparatus is arranged.
4, emergency power off switch
The back side of emergency power off switch requires that magnet is arranged, and is convenient to be fixed on rack or some hardwares.Color is showy, and button touch will conveniently emergency take place the time by.Parameter request:
● operating voltage: 220VAC
● operating current: about 10mA
● dielectric strength: 100M Ω
● switch life: greater than 1000 times
● magnet requires: requirement can with switch firm be adsorbed on the rack vertical walls not landing.
This switch is difficult on the market have been bought, and selects for use fire protection warning switch (closed type) to stick the magnetic base and realizes.
The instructions for use of emergency power off switch provided by the utility model:
1, after the emergency power off switch installs,, carries out functional test then, see whether can meet design requirement, can come into operation after affirmation is normal by emergency power off switching circuit connection layout check circuit.
2, the on-off switch on the closed control box of elder generation (is noted, this step is very important, otherwise when changing latch, can cut off general supply), transfer to the short circuit latch on the control box then, the plug of emergency power off switch is inserted in the jack of control box, the last on-off switch on the control box (notice that this step is very important, otherwise can not cut off general supply by the emergency power off switch when emergency takes place) that disconnects again.
3, the emergency power off switch is adsorbed on the rack, the emergency power off switch is in user mode, occurs if any emergency, only need press the emergency power off switch, can the main powering shelf of long-range cut-out.
4, after fault solves, if extensive power supply, main distribution cabinet hand-reset circuit breaker.
5, in emergency power off switch time spent not for a long time, insert the short circuit latch, to prevent that misoperation from causing whole audience outage and it should be noted that equally: in changing emergency power off on-off plug and short circuit latch process, also want the on-off switch on the closed control box earlier.
Claims (5)
1, a kind of emergency power off loop with the undervoltage tripping Safety Design, the emergency power off loop of described band undervoltage tripping Safety Design comprises more than one emergency power off switch, the circuit breaker of subsidiary device for under-voltage releasing equipment and emergency power off switch control box are formed, it is characterized in that: described more than one emergency power off switch constitutes series relationship each other, and be connected with the device for under-voltage releasing equipment terminal of circuit breaker, each emergency power off switch is connected by the jack of latch with emergency power off switch control box, a jack and an on-off switch are arranged on the described emergency power off switch control box, and described jack connects emergency power off switch and/or short circuit latch.
2, a kind of emergency power off loop with the undervoltage tripping Safety Design according to claim 1, it is characterized in that: the circuit breaker of described band undervoltage tripping has the annex device for under-voltage releasing equipment, possesses the decompression power-off protection function.
3, a kind of emergency power off loop with the undervoltage tripping Safety Design according to claim 1 is characterized in that: the on-off switch of described emergency power off switch control box is to use when changing the emergency power off switch or changing the short circuit latch.
4, a kind of emergency power off loop with the undervoltage tripping Safety Design according to claim 1, it is characterized in that: the latch and the jack of described emergency power off switch control box adopt industrial connector, and anti-error extracting apparatus is installed.
5, a kind of emergency power off loop according to claim 1 with the undervoltage tripping Safety Design, it is characterized in that: the back side of described emergency power off switch is equipped with magnet, its parameter request be operating voltage 220VAC, operating current greater than 8mA, dielectric strength 100M Ω, switch life greater than 1000 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201785911U CN201290001Y (en) | 2008-11-04 | 2008-11-04 | Emergency current failure loop with undervoltage thread-losing safety design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201785911U CN201290001Y (en) | 2008-11-04 | 2008-11-04 | Emergency current failure loop with undervoltage thread-losing safety design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201290001Y true CN201290001Y (en) | 2009-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201785911U Expired - Lifetime CN201290001Y (en) | 2008-11-04 | 2008-11-04 | Emergency current failure loop with undervoltage thread-losing safety design |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201290001Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165092A (en) * | 2014-08-05 | 2014-11-26 | 中国北车集团大连机车车辆有限公司 | Stop protection circuit of diesel engine of diesel locomotive |
| CN114977111A (en) * | 2022-05-30 | 2022-08-30 | 阳光电源股份有限公司 | Power generation system, wind power converter, grid-side frame circuit breaker and control method thereof |
-
2008
- 2008-11-04 CN CNU2008201785911U patent/CN201290001Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165092A (en) * | 2014-08-05 | 2014-11-26 | 中国北车集团大连机车车辆有限公司 | Stop protection circuit of diesel engine of diesel locomotive |
| CN114977111A (en) * | 2022-05-30 | 2022-08-30 | 阳光电源股份有限公司 | Power generation system, wind power converter, grid-side frame circuit breaker and control method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090812 |
|
| CX01 | Expiry of patent term |